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Brief CV of Prof. Man Mohan

Dr. Man Mohan was a Professor in the Department of Physics and Astrophysics (University of Delhi). He received his Masters degree and PhD at University of Delhi, and joined as faculty at DU, where he has taught since 1972. He was visiting scientist at Max-planck Institute Garching, University of Munich Germany (18 months 1978-1980), F.O.M. Institute, Amsterdam (6 Months 1980), Kansas University, U.S.A. (1980-1981), University of Texas, Austin, U.S.A. (1981-1982), Queen’s University of Belfast, Northern Ireland (1984-1986), Observatoire de Paris, Meudon, France (visited 4 times 1989-1992) and International Center for Theoretical Physics, Italy (ICTP) (visited 5 times). He has been awarded “Distinguished Teacher Award” by K.M. College, Delhi University, 1993, “Regular and Senior Associate” by International Centre for Theoretical Physics, Trieste, Italy. He was also nominated ICTP -IISC-JNC ASR Associate-ship by Indian Institute of Science, Banglore, 1994- 1997. Moreover, he was the member of the Royal Society of Chemistry for work in the field of Chemical Physics, 1997. Presently, he is a Chief Editor of Journal of Atomic, Molecular, Condensate & Nano Physics (JAMNCP), 2012 and serving as a Co-PI in the DST sponsored project ‘Study of atomic processes for multi-charged ions for plasma diagnostics’ (2017-2020).

His main research interests are in the areas of Interaction of Super intense, femto-second Laser Fields with Atoms, and Molecules-involving Multiphoton Processes, Collisions in Intense Short Laser Pulses, Atomic structure calculations for multi-electron atoms and ions using Configuration Interaction Technique, Electron impact Excitation Collision Strengths and Rate Coefficients having application in Astrophysics, Plasma Physics and Nuclear Fusion Reactors, Photoionization of complex ions and atoms, Study of Chemical Reactions with femto-second Laser Pulses, Study of Bose-Einstein Condensate (BEC) in Laser and Nanotechnology: Study of Non-linear Phenomenon in Nano-structures. He has been the Convener of series of International conferences organised on “Current Developments in Atomic Molecular and Chemical Physics with Applications” CDAMOP. He is the author of several books in the field of atomic, molecular, laser and nano physics. Recently he is the Co-Author of Proceedings of Int. Conf CAMNP published in 2022 by Springer Publisher (Germany) He has published over 200 peer-reviewed papers in reputed international and national journals.

Professor Man Mohan’s Research Group

 

Prof. Rinku Sharma (Group Leader at Delhi Technological University (DTU), Delhi), Arun Goyal (Assistant Professor in Physics), Indu Khatri (Physics Lecturer),Richa Gautam (Doctoral Student)

Prof. Avnindra Kumar Singh (Group Leader at DDU College,DU), Dr. Nupur Verma (Associate Professor in Physics), Dr. Sanjay Tyagi (Associate Professor in Physics), Mayank Dimri (Doctoral Student) and Dishu Dawra (Doctoral Student) 

Dr.AlokKumarSingh Jha(GroupLeader,School of Physical Sciences ,JNU ,Delhi),Narendra (Doctoral Student),Shivankar(Doctoral Student)

Prof. Narendra Kumar (Principal) (Group Leader at Zakir Hussain Delhi College, ), Dr. Jagjit Singh (Assistant Professor in Physics), Sunny Aggarwal (Assistant Professor in Physics) and Ravinder Kumar (Doctoral Student)

In recent years, the high quality observational data recorded by space missions such as International Ultraviolet Explorer (EUVE), the Advanced Satellite for Cosmology and Astrophysics (ASCA), the Hopkins Ultraviolet Telescope (HUT), the Hubble Space Telescope (HST), and Solar and Heliospheric Observatory (SOHO), has highlighted the need for highly accurate atomic data. There is no doubt that this situation will be further emphasized by the launch of future space missions such as FUSE. The accuracy of atomic data is crucial for the interpretation of the spectra from these missions in terms of the physical conditions in the astrophysical sources. The need for accurate atomic and molecular data is immense, with applications in such diverse fields such as astronomy, fusion research, and lasers. The type of data depends upon the region or the object being studied. As very few of the ions of interest can be studied experimentally in the laboratory, the user must depend primarily on theoretical data. Nowadays, measurement and calculation of photoionization cross section and collision strength has become a subject of great interest. Photoionization cross sections are necessary for the computation of photoionization and recombination rates for ionization balance in astrophysical plasmas. Accurate electron-impact inner-shell ionization cross section data are necessary for precisely measuring the impurity density in fusion plasma. 

In this direction, our group is involved in the calculations of accurate collision strengths, radiative and autoionization decay rates, photoionization cross-sections, oscillator strengths and wavelengths for allowed and forbidden transitions which are needed for the interpretation of observational data & for modeling of astrophysical objects. In our calculations, important physical effects mainly configuration interaction, autoionizing resonances, exchange, coupling and relativistic effects are incorporated by using Configuration Interaction Technique for the atomic structure and accurate R-matrix method for the collisions. For atomic structure calculations, we use grasp2k, GRASP, FAC and CIV3 techniques whereas for collision problems we use very sophisticated R-Matrix (both relativistic and non-relativistic) state-of-art technique. We have reported energies and radiative data for E1, E2, M1 and M2 multipole transitions for lowest 110 fine structure levels of Cs XXV ion. We have identified 46 EUV and 33 SXR spectral lines from ground state. We have predicted many new spectral lines, which are yet to be observed, and which will form the basis for the future experimental work. We have also calculated line intensity ratio (R) and electron density and studied their behavior graphically with high plasma temperatures. Moreover, for providing support to experimentalists and extend the data base, we reported the atomic data for Ne-like ions (Z=72-75) by calculating energies and lifetimes for 209 fine structure levels of Hf LXIII, Ta LXIV, W LXV and Re LXVI, along with 109 fine structure levels available in the literature for W LXV. Tungsten being a plasma facing material in fusion reactors, EUV and SXR transitions of high Z ions are of Astrophysical interest. Therefore, we have reported the atomic data for W XLIV such as energies for the lowest 100 fine structure levels. Additionally, the radiative data for all E1 and M1 transitions from ground state among the lowest 100 levels were tabulated. We have identified 5 EUV and 38 SXR spectral lines in dipole transitions.  We have calculated the line intensity ratio by considering the maximum plasma temperature of 1010 K, which increases with increasing temperature. For T ≥ 109K, the increase in R < 0.001%. This information may be useful for producing optically thin plasma in LTE at higher temperatures for W XLIV.

 

   02.  Our Group Contribution in Atoms & Molecules in Strong Radiation Fields & Chemical Physics

  Dr. Rachna Kundliya (Associate Professor in Physics), Dr. Sidharth Lahon (Assistant Professor in Physics), Dr. Manoj Malik (Assistant Professor in Physics) and Dr. Kriti Batra (Assistant Professor, IP University)

  We are studying numbers of striking non-linear phenomenon in atoms and molecules, which occur when they are exposed to intense short femto-second laser pulses. Some of these are Above threshold ionization (ATI) i.e. the absorption of more photons then necessary for ionization and High harmonic generation (HHG), which has become potential method to produce coherent radiation with wavelength reaching into soft X-ray region. In super-intense field we found that the real atom can be stabilized against ionization due to drastic change of atomic structure using two laser pulses differing in phase. For studying such processes, we have developed number of non-perturbative methods like Floquet and Quasi Energy approaches. For real laser pulses with non-periodic Hamiltonian we have developed numerical computational methods, such as Split Operator Technique (SOT), Fast-Fourier Technique (FFT) and Runge-Kutta (RK) method etc. for solving dynamical coupled equations. We have also developed an efficient pseudo-spectral L2 technique for calculating accurate multi-photon ionization cross-sections of atoms, which give results in agreement with experimental results. Our group is also involved in the calculation of simultaneous electron-photon excitation (SEPE) processes aiming for explaining the projected experiment using electron and high frequency synchrotron photon beams such as ELECTRA at Trieste and ALS at Berkeley. The theoretical approach followed is non-perturbative and is based on the Floquet theory and quasi energy technique. Floquet theory is employed to solve the equation of motion for laser driven intraband transitions between the states of the conduction band of quantum dot with spin effect. Floquet theory relates the solution of Schrodinger equation involving a periodic Hamiltonian to the solution of another equation with a time independent Hamiltonian represented by an infinite matrix (called the Floquet matrix). Spin flipping with rashba spin orbit coupling in presence of laser fields for the quantum dot is also studied. 

 

Dr. Tarun Kumar (Assistant Professor in Physics), Dr. Priyanka Verma (Assistant Professor in Physics), Dr. Sonam Mahajan (Assistant Professor in Physics) and Dr. Neha Aggarwal (Assistant Professor in Physics)

Our group at University of Delhi is looking at various theoretical aspects of the physics of dilute trapped Bose Einstein Condensates, which includes exotic quantum phases of light coupled to an atom in a cavity through multiphoton transitions, Novel quantum optical effects in periodically modulated BEC interacting with light field, nonlinear excitations in BEC, interaction of two component BEC in 1D, 2D and 3D, localization properties of BEC and Dynamics of BEC in time dependent optical lattices. The research on BEC’s in optical lattice is a part of a more extensive investigation of the properties of BEC’s, in which we are involved. Because the wave mechanical properties of the atoms are amplified to levels at which they can be observed and manipulated directly, BEC atomic assemblies are particularly interesting and useful for the study of macroscopic quantum effects, which is one of the main aim of our research. We have studied a hybrid optomechanical quantum device formed by a Bose Einstein Condensate (BEC) confined in a high quality factor optical cavity with an oscillatory end mirror for the detection of weak forces. We show using the stochastic cooling technique that the atomic two-body interaction can be utilized to cool the mirror and achieve position squeezing essential for making sensitive measurements of weak forces. We further show that the atomic two-body interaction can also increase the signal to noise ratio (SNR) and decrease the noise of the off-resonant stationary spectral measurements. We investigated the possibility of approaching the quantum ground-state of a hybrid optomechanical quantum device formed by a Bose-Einstein condensate (BEC) confined inside a high-finesse optical cavity with an oscillatory end mirror. Cooling is achieved using two experimentally realizable schemes: back-action cooling and cold damping quantum feedback cooling. In both the schemes, we found that increasing the two body atom-atom interaction brings the mechanical oscillator to its quantum ground state. It has been observed that back-action cooling is more effective in the good cavity limit while the cold damping cooling scheme is more relevant in the bad cavity limit. It is also shown that in the cold damping scheme, the device is more efficient in the presence of BEC than in the absence of BEC. We have also developed a new tool for controlling the superfluid properties of a condensate loaded in an optical lattice inside a cavity. The optomechanical system we have studied is given in the Fig. below. We have observed that motion of a cavity mirror gives a powerful insight into the way superfluid fraction of the condensate can be enhanced or diminished. We have studied the optomechanical effects (effects of moving one of the cavity mirror) on the Bloch energy, effective mass, Bogoliubov excitation spectrum, superfluid fraction and the Mott-superfluid phase diagram of a Bose-Einstein condensate confined in an optical cavity.

      04.  Our Group Contribution in Nano-Technology & Photonics

Professor Rinku Sharma (Group Leader at Delhi Technological University (DTU), Delhi), Dr. Monica Gambhir (Assistant Professor in Physics), Dr. Sidharth Lahon (Assistant Professor in Physics), Dr. Manoj Malik. (Assistant Professor in Physics) and Miss Suman (Doctoral Student) ,Miss Priyanka(Doctoral Student) ,Dr. Monica Gambhir Assistant Professor in Physics,DU

 

Photonics refers to the science and technology relating to the transportation of information by light, and underpins the information revolution in which light is used to transmit, store and sort information. Nanoscience is directed at discovering and understanding the way matter behaves at the nanoscale, and underpins the technology of creating materials, devices and systems through the control of matter at the atomic level. The nanostructure exhibit strongly size dependent chemical & physical properties which represent limiting behaviors for different types of matter (atomic to bulk) The variations with size are enormous, and represents a new opportunity to optimize material properties by varying their size & shape rather than by changing their chemical composition. Thus the primary advantage of any nanostructure material lies in the extensive tunability of its properties. For example, the fundamental characteristics of a material, such as it melting temperature, color, saturation magnetization and coercivity, charging energy, chemical reactivity, etc., are all functions of size and shape. For instance, the color of semiconductor quantum dots can be varied continuously from the near infrared to the ultraviolet. Such colors changes correlate to electron and hole energy levels, which in turn affect the catalytic and chemical behavior of the particles. Thus, nanoscale building blocks lend major new experimentally controllable variables for fabricating desired materials. Atom manipulations, and matter diffraction from light waves are important new tools emerging from atomic and optical physics, which may lead to new ways of fabricating nanostructures.

Our group is focusing on the recent developments in nanoscience using new theoretical computational tools. For example, the interaction of shaped pulses sequences could contribute to the ‘‘assembly’’ of nanostructured materials, or to the manipulation of electronic coherence in quantum dot molecules and solids. The interaction of intense optical fields with nanostructures is of interest. Multiphoton ionization, and the measurement of nonlinear susceptibilities as a function of the size are currently important fields. In strong em field, collisions of atoms or molecules with the nanostructures will allow electron transfer from quantum dot to the colliding atom or tunnel directly to vacuum states. Such enhanced electron emission processes will find applications in, for example, electron induced catalysis, air pollution abatement, etc. Using UV or even low energy x-rays from synchrotron light sources, 3-dimensional nanostructures or layers can be produced.

To improve and develop microelectronics devices, the basic understanding of the various dynamical processes in the nanostructures has to be studied in detail. We are also looking in to the excitation of nanostructures out of their equilibrium and the subsequent relaxation processes with various rates, which has now become a key area of nanostructure research.

  05.  Our Group Contribution in   Molecular Dynamics & Inter Molecular Energy Transfer Processes

  Dr. Kriti Batra (Associate Professor, IP University) and Dr. Nisha Singhal (USA)

Knowledge of the chemical, energetic and spectral properties of polyatomic molecules is important for studies of chemical reactivity, isotope separation, combustion processes, chemical lasers and other technologies as well as being a splendid stimulus to the ever-expanding predictive abilities of chemical theorists.

In the field of Molecular dynamics, we are investigating the nature of multiphoton excitation of several triatomic molecules in its ground electronic state coupled to different vibrational modes under strong laser field using non-perturbative techniques. The quantum theory of chemical reactions and theory of intermolecular energy transfer is the basis of chemical dynamics and molecular modeling. Our group is using different approaches to study energy transfer in various processes like rotational-rotational (R-R), rotational-vibrational (R-V), vibrational-vibrational (V-V) for explaining the flow of energy in Chemical dynamics i.e. where does it go, how long does it take to get there which has direct practical applications.

Some Important Research Publications of the Group

1. Mohan M. and Hibbert A. (1987) Model potential calculation for low lying states of mercury, J. Phys B 20.
2. Mohan M. Milfeld K D. and Wyatt RE (1990) New general R-matrix theory of collinear reactions and its application to the H+ H2 reaction. Mol. Phys. (UK) 70 1085-1095.
3. Mohan M. Prasad V. (1991) Collision of H+ with Co molecule in the presence of laser beam using Floquet theory, J. Phys. B24 L81-L87.
4. Hibbert A. Le Dourneuf M and Mohan M. (1993) Energies, Oscillator strengths and life times for neon -like ions up to Kr- XXVII. At. Data and Nucl. Data tables (USA) 53-23-112.
5. Mohan M. Le Dourneuf M. Hibbert A. and Burke PG (1998) Relativistic calculation on photoionization of the ground state of Neon like Fe- XVII. Phys. Rev. A57 3489-3492.
6. Kundliya R. Prasad V and Mohan M. The two-photon process in an atom using the pseudo state summation technique. (2000) J. Phys. B: At. Mol. Opt. Phys. 3, 1-11.
7. Kundliya R. Batra K and Mohan M. (2001) Two-photon ionization using elliptically polarized light, Phys. Rev A 64, 043404.
8. R. Kundliya & M. Mohan (2001), Phys. Lett. A, 291, 22 “Stabilization of Hydrogen atom in an intense laser pulse”.
9. Batra K., Prasad V. and Mohan M. (2002) Collisional excitation of Na-Rydberg atoms, Eur. Phys. J. D ,191.
10. N. Singh, M. Mohan, W. Eissner, PhysicaScripta (Sweden) 65, 233, (2002), “Photoionisation of ground state of Mg III using Relativistic Breit-Pauli Approximation.”
11. N. Singhal, V. Prasad and M. Mohan, European Journal of Physics D, 21, 293-298(2002), “Role of electric field polarization in Rotational transitions in Molecules”.
12. M. Mohan (2002) Conference, Invited Talk, Ind. Journal. Phys. B, 401-405, “Recent Developments in multiphoton strong- field physics”.
13. M. Mohan (2003), Invited Talk at Centre de Recherche, Uni. of Sherbrook, Canada,25th June2003, “Population Distribution in BEC with Laser Pulses”.
14. F. Dion, M. Mohan & Tung N Dang (2003), Proceedings of “GORDON RESEARCH CONF.” 3-8 Aug, 2003, MA, U.S.A, Molecular Wavepacket Surfing Time Dependent Potential Energy Surfaces: Effects of Laser Frequency Chirp.
15. N. Singh, A.K. Singh & M. Mohan (2003), Canadian J. Phys. 81,1-7, 2003, “Level energies and oscillator strengths for fine structure transitions from the ground state of Ca IV “.
16. K. Batra, R. Kundliya & Man Mohan (2004), Pramana journal of physics 62 ,31, “Atom in a femtosecond bichromatic laser field”.
17. K. Batra, N. Verma, A. Maan & M. Mohan (2004), Research Article Published in the Book “Universality and Diversity in Science”, Edited by W. Becker (Germany)and M. V. Federov (Russia), World Scientific Publishing Co. Ltd., “Atomic Dynamics with Chirped Ultra Short Intense Laser pulse”.
18. K. Batra, N. Verma, A. Maan & M. Mohan (2004), Research Article Published in the Book “Universality and Diversity in Science”, Edited by W. Becker (Germany) and M. V. Federov (Russia), World Scientific Publishing Co. Ltd., “Atomic Dynamics with Chirped Ultra Short Intense Laser pulse”.
19. Bhattacherjee, A., Courtade, E. and Arimondo, E. (2004): Stability of a bosonic current in a quasi-condensate confined in an optical toroidal trap. Journal of Physics B: Atomic, Molecular and Optical Physics, 37, 4397-4404.
20. Bhattacherjee, A. (2004): Tkachenko modes and quantum melting of Josephson junction type of vortex array in rotating Bose Einstein condensate. Journal of Physics B: Atomic, Molecular and Optical Physics 37, 2699- 2705.
21. Bhattacherjee A., Morsch, O. and Arimondo, E (2004): Stability of a small amplitude normal mode of a Bose-Einstein condensate with a singly quantized vortex confined in an optical lattice. Journal of Physics B: Atomic, Molecular and Optical Physics 37, 2355- 2361.
22. Bhattacherjee, A. and Man Mohan (2003): Wave-packet dynamics and Rabi Oscillations in two-coupled Bose-Einstein condensates confined in an optical lattice. Modern Physics Letters B 17, 321-327.
23. Bhattacherjee, A. and Man Mohan (2002): Crossover from Rabi to Josephson dynamics in two-coupled Bose-Einstein condensates as a phase transition. Modern Physics Letters B, 16, 1021- 1026.
24. Bhattacherjee, A. (2002): Controlled manipulation of population oscillations and quantum statistics of Bose-Einstein condensate confined in an optical lattice. Optics Communication 204, 203-209.
25. Bhattacherjee, A. (2002): Quantum manipulation of polaritonic band gaps of two coherently coupled Bose-Einstein condensates confined in an optical lattice. Journal of Optics B: Quantum and semi classical optics 4, 251- 255.
26. Bhattacherjee, A. and ManMohan (2002): Imaging population distribution between two coupled atomic Bose-Einstein condensates by using short laser pulses. Physical Review A. 66, 053617- 053622.
27. Relativistic R-matrix close-coupling calculations for photoionization of Si-like Ni XV. Jagjit Singh, A.K.S. Jha and M. Mohan, The Astrophysical Journal Supplement Series, 186:334–340, 2010.
28. Lifetime for the Ti X spectrum. Jagjit Singh, A.K.S. Jha and M. Mohan, J. Phys. B: At. Mol. Opt. Phys. 43 (2010) 115005.
29. Probing Superfluidity of Periodically Trapped Ultracold Atoms in a Cavity by Transmission Spectroscopy. Central European Journal of Physics (2009). Arnaya B Bhattacherjee, Tarun Kumar and Man Mohan
30. Cavity Quantum Optomechanics of Ultracold Atoms in an Optical Lattice: Normal- Mode Splitting. International journal of modern physics B (2010). Tarunkumar, Arnaya B Bhattacherjee and Man mohan
31. Dynamics of a movable micro mirror in a nonlinear optical cavity, Phy. Rev. A, 81, 013835 (2010). Tarun Kumar, Arnaya B Bhattacherjee and Man Mohan
32. Multiphoton excitation of disc shaped quantum dot in presence of laser (THz) and magnetic field for bioimaging. Siddhartha Lahon , Monica Gambhir, P. Kumar Jha, Man Mohan, Physica status solidi b, 247, 962 (2010).
33. Luttinger Liquid in Two-ColourOpttical lattice. (Laser and Bose Einstein condensation Physics, Narosa Publications (2010) P.P. 67-74. Arnaya B Bhattacherjee, Tarun Kumar and Man Mohan.
34. Level energies and oscillator strengths in Ni(XII), Can. J. Phys. 81(6): 861–867 (2003) Narendra Singh, Avnindra K. Singh, and Man Mohan.
35. Level energies, oscillator strengths, and lifetimes for transitions in Ti VI, Atomic Data and Nuclear Data Tables 93 (2007) 105–126 Man Mohan, Avnindra K. Singh, Alok K.S. Jha, Pradip Jha.
36. Breit-Pauli Atomic Structure Calculations for Sulphur-like Titanium. Jagjit Singh, Sunny Aggarwal, A.K. Singh and M. Mohan, Can. J. Phys. 90 833 (2012)
37. Photoionization cross-section of Chlorine-like Iron. Sunny Aggarwal, J. Singh, A.K.S. Jha and M. Mohan, J. Astrophys. Astron. 33 291 (2012)
38. Optomechanical Effects in Superfluid Properties of BEC in an Optical Lattice. Priyanka Verma, A. B. Bhattacherjee, and Man Mohan., Cent. Europ Jour. Physics 10, 335-341 (2012).
39. Optomechanical Effects in self-organization of a Bose-Einstein Condensate in an Optical Cavity. Priyanka Verma, Aranya B. Bhattacherjee and Man Mohan., Canadian Journal of Physics 90, 1223–1231 (2012).
40. Oscillations in a Parametrically Excited Bose-Einstein Condensate in a Combined Harmonic and Optical Lattice Trap.  Priyanka Verma, Aranya B. Bhattacherjee and Man Mohan., Cent. Europ Jour. Physics 10, 335-341 (2012).  
41. Chaos in BEC Trapped in Tilted Optical Superlattice Potential with Attractive Interaction. Priyanka Verma, Aranya B. Bhattacherjee and Man Mohan., Jour. Phys.: Conference Series 350, 12003-12008 (2012). 
42. Energy dispersion and electron g factor of quantum wire in external electric and magnetic fields with Rashba spin orbit interaction. Manoj Kumar, Siddhartha Lahon, P.K. Jha and Man Mohan; Superlattices and Microstructures, 57, 11(2013)
43. Ground-state cooling of a mechanical oscillator and detection of a weak force using a Bose-Einstein condensate. Sonam Mahajan, Tarun Kumar, Aranya B. Bhattacherjee, and ManMohan Phys. Rev. A 87, 013621 (2013)
44. Rashba spin orbit interaction effect on multiphoton optical transitions in a quantum dot. Manoj Kumar, Siddhartha Lahon, P.K. Jha and Man Mohan; Physica Status Solidi b, DOI-10.1002/pssb.201248449.
45. Energy dispersion and electron g-factor of quantum wire in external electric and magnetic fields with Rashba spin orbit interaction. Manoj Kumar, Siddhartha Lahon, Pradip Kumar Jha, and Man Mohan. Superlattices and Microstructures, 57, 11(2013), ISSN: 0749-6036. IF- 1.564
46. Spin-orbit interaction effect on the linear and nonlinear properties of quantum wire in the presence of electric and magnetic fields. Siddhartha Lahon, Manoj Kumar, Pradip Kumar Jha, Man Mohan. Journal of Luminescence 144, 149 (2013). ISSN: 0022-2313, IF – 2.144
47. Linear and nonlinear optical absorption coefficients and refractive index changes associated with intersubband transitions in a quantum disk with flat cylindrical geometry. Monica Gambhir, Manoj Kumar, P.K. Jha, Man Mohan. Journal of Luminescence, 143, 361 (2013), ISSN: 0022-2313, IF – 2.144
48. Multiconfigurational Dirac-Fock atomic structure calculations fir Cl-like tungsten. Mohan M, Aggarwal S and Singh N 2014 Can. J. Phys. 92 177 
49. Atomic data for He-like Tungsten. Aggarwal S, Singh A K and Mohan M 2014 JAMCNP 1 19
50. Dynamics of Periodically Modulated Cavity Frequency of a Microwave Cavity Consisting of Cold Atoms. Sonam Mahajan, Neha Aggarwal, Aranya B Bhattacherjee and Man Mohan. Journal of Atomic, Molecular, Condensate and Nano Physics, 1, 11 (2014).
51. Selective entanglement in a two-mode optomechanical system. Neha Aggarwal, Kamanasish Debnath, Sonam Mahajan, Aranya B. Bhattacherjee, and Man Mohan. International Journal of Quantum Information, 12, 1450024 (2014).
52. Rashba spin orbit interaction effect on nonlinear optical properties of quantum dot with magnetic field. Pradip Kumar Jha, Manoj Kumar, Siddhartha Lahon, Sukirti Gumber, Man Mohan. Superlattices and Microstructures, 65, 71 (2014). ISSN: 0749-6036. IF- 1.564
53. Spin-orbit interaction effect on nonlinear optical rectification of quantum wire in the presence of electric and magnetic fields Manoj Kumar, Siddhartha Lahon, Pradip Kumar Jha, Man Mohan. Physica B: Condensed Matter, 438, 29 (2014), ISSN: 0921-4526, IF- 1
54. Atomic Sturcture Calculations for Br-like ions. Arun Goyal, Indu Khatri, Sunny Aggarwal, A. K. Singh and M. Mohan, Can J. Phys. 93 487 (2015)
55. Atomic structure calculations and identification of EUV and SXR spectral lines in Sr XXX. ArunGoyal, Indu Khatri, Sunny Aggarwal, A. K. Singh and M. Mohan, JQSRT 161 157 (2015)
56. R-matrix calculations of photoionization cross section of Ne-like Tungsten. Indu Khatri, ArunGoyal, Sunny Aggarwal, A. K. Singh and M. Mohan, Can J. Phys. 93 1221 (2015)
57. Relativistic atomic data for W XL VII. Sunny Aggarwal, A. K. S. Jha, Indu Khatri, Narender Singh, Man Mohan, Chin. Phys.B 24 053201 (2015).
58. Collisional Excitation of Fluorine Like Tungsten using Relativistic Dirac Atomic R-matrix Method. ArunGoyal, Indu Khatri, Sunny Aggarwal, A.K. Singh, Rinku Sharma, Man Mohan, JAMNCP 2 1-14 (2015).
59. Dynamics of an optomechanical resonator containing a Quantum Well induced by periodic modulation of cavity field and external laser beam. Sonam Mahajan, Neha Aggarwal, Tarun Kumar, Aranya Bhattacherjee, and Man Mohan. Canadian Journal of Physics 93(7), 716 (2015).
60. Thermal and magnetic properties of cylindrical quantum dot with asymmetric confinement. Sukirti Gumber, Manoj Kumar, Monica Gambhir, P.K.Jha, Man Mohan, Can. J. Phys. 93, 1264 (2015).
61. Multiphoton excitation in spin split two-dimensional electron gas. Sukirti Gumber, Manoj Kumar, Pradip Kumar Jha, Man Mohan, Physics Letters A 379, 3155 (2015).
62. Calculation of energy levels, lifetimes and radiative data for La XXIX to Sm XXXIV. Arun Goyal, Indu Khatri, Sunny Aggarwal, A.K. Singh, Man Mohan, ADNDT 107 406 (2016).
63. Energy levels and transition rates for Ba XLVIII. Indu Khatri, Arun Goyal, Sunny Aggarwal, A.K. Singh, Man Mohan, ADNDT  107 367 (2016)
64. Energy levels, lifetimes and radiative data for Ba XXVII. Indu Khatri, Arun Goyal, Sunny Aggarwal, A.K. Singh, Man Mohan, Radiation Physics and Chemistry 123 46 (2016).
65. Multi-Configuration Dirac–Hartree–Fock (MCDHF) Calculations for B-Like Ions. Indu Khatri, Arun Goyal, Avnindra Kumar Singh and Man Mohan, ATOMS 4 13 (2016).
66. Atomic Structure Calculations and Study of Plasma Parameters of Al-Like Ions. Arun Goyal, Indu Khatri, Avnindra Kumar Singh, Man Mohan, Rinku Sharma and Narendra Singh, ATOMS 4 22 (2016).
67. Atomic structure calculations and study of line intensity ratio for Kr XXIV. Arun Goyal, Narendra Singh, Sunny Aggarwal, A.K. Singh, Man Mohan Can. J. Phys. (Published on website in May 2016).
68. Atomic structure calculations and study of EUV and SXR spectral lines in Cu-like ions. Arun Goyal, Indu Khatri, Narendra Singh, A.K. Singh, Rinku Sharma, Man Mohan, Can. J. Phys. (Published on website in June 2016).
69. Chaos in dynamical Bose-Einstein Condensate. Priyanka Verma, Aranya Bhattacherjee, and Man Mohan, JCB Physical Sciences 6, 504 (2016).
70. Optical response of a two dimensional quantum ring in presence of Rashba spin orbit coupling. Sukirti Gumber, Monica Gambhir, Pradip Kumar Jha, and Man Mohan, J. Appl.   Phys. 119, 073101 (2016).
71. Effect of hydrostatic pressure and magnetic field on electromagnetically induced transparency based nonlinear frequency conversion in quantum ring. Sukirti Gumber, Monica Gambhir, Pradip Kumar Jha, Man Mohan, Superlattices & Microstructures, 98, 423 (2016).
72. Spectroscopic study of EUV and SXR transitions of Cs XXV. Arun Goyal, Indu Khatri, Narendra Singh, Sunny Aggarwal, A.K. Singh, Rinku Sharma. Can. J. Phys. (published on web 14 Dec. 2017).
73. Fully relativistic atomic structure calculations for W XLIV for determination of plasma diagnostic terms. Arun Goyal, Rinku Sharma, A.K. Singh, Man Mohan. Can. J. Phys. 95, 950-957 (2017).
74. Collision strength and effective collision strength for Br XXVII. Arun Goyal, Rinku Sharma, Indu Khatri, A.K. Singh, Shougaijm Somorendro Singh, Man Mohan. Can. J. Phys., 95, 1127 (2017).
75. Photoionization of Cl-like Ni XII using relativistic R-matrix close-coupling method. Indu Khatri, Arun Goyal, A.K. Singh, Narendra Singh, Man Mohan. Can. J. Phys., 95, 1136 (2017).
76. Collision strength and effective collision strength for Ba XLVIII. Man Mohan, Arun Goyal, Indu Khatri, Shougaijm Somorendro Singh, A.K. Singh Can. J. Phys. 95, 173 (2017).
77. X-ray diffraction patterns and diffracted intensity of Kα spectral lines of He-like ions. Arun Goyal, Indu Khatri, A.K. Singh, Rinku Sharma, Man Mohan. Radiation Physics and Chemistry, 138, 16 (2017).
78. Screening constant by unit nuclear charge calculations of resonance energies and widths of the 3pns 1,3P° and 3pnd 1P° Rydberg series of Mg-like (Z=13-26) ions Indu Khatri, Arun Goyal, Mamadou Diouldé Ba, Maurice Faye, Malick Sow, Ibrahim Sakho, A.K. Singh, Man Mohan, Ahmadou Wagué Radiation Physics and Chemistry, 130, 208 (2017).
79. "Accurate study on the properties of spectral lines for Na-like Cr 13+", A. K. Singh, Mayank Dimri, Dishu Dawra, Alok Jha and Man Mohan, Canadian Journal of Physics, https://doi.org/10.1139/cjp-2018-0218 (2018)
80. Theoretical study of energy levels and radiative properties of Be-like W⁷⁰⁺. N. Singh, S. Aggarwal, M. Mohan. Journal of Electron Spectroscopy and Related Phenomena. 2018; 229:124-31
81. N. Singh, A. Goyal, M. Mohan. Theoretical study of Extreme Ultraviolet and Soft X-ray transitions of In XLVI and Sn XLVII with plasma parameters. Journal of Electron Spectroscopy and Related Phenomena. 2018.
82. "Spectroscopic study of EUV and SXR transitions of Cu XIX with plasma parameters", A. K. Singh, Mayank Dimri, Dishu Dawra, Alok KS Jha, NupurVerma and Man Mohan. Radiation Physics and Chemistry, 156 (2019) 174-192
83. Relativistic R-matrix photoionization cross section calculations of Ne-like Co XVIII with resonance parameters. A. K. Singh, Mayank Dimri, Dishu Dawra, Alok Jha and Man Mohan J Phys. B Atomic & Mol. Physics, (2019)
84. Relativistic R-matrix calculations of photoionization cross sections of Cu XVIII. Avnindra Kumar Singh, Dishu Dawra, Mayank Dimri, Alok Kumar Singh Jha, Man Mohan. Eur. Phys. D 2019 (accepted manuscript)

 

85. A.K. Singh, D. Dawra, M. Dimri ,ManMohan et al., Phys. Lett. A 384, 126369 (2020)

Plasma screening effects on the atomic structure of He-like ions embedded in strongly coupled plasma

86  N Singh , S. Aggarwal,M Mohan ,  Extended Atomic Structure Calculations for W11+ and W13+ Tungeston ions  , Atoms(USA)  ,8(4) ,92,2020 

87  Dimri, Mayank ; Dawra, Dishu ; Singh, A. K. ; Jha, Alok K. S. ; Pandey, Rakesh Kumar ; Sharma, Rinku ; Mohan, Man Fine structure calculations of excitation energies, lifetimes and radiative properties of S-like Kr XXI    ,.RadphysChem.2021.109756 

88 Prafulla C.BhowmikaFaltaYadava..ManMohan,Effect of plasma environment on spectral and structural properties of H-like C, N and O ions , Journal of Electron Spectroscopy , Elseware, Volume 251, , 147107 , 2021 

89   Mayank Dimri, Dishu Dawra ,, Rinku Sharma4 and Man Mohan ,Electron impact excitation of Na-like Cu XIX using the Breit–Pauli R-matrix method ,   European . Phys. J. D 75: 157  (2021)

90 Mayank Dimri,Dishu Dawara .. ,Man Mohan   ,Atomic structure and radiative properties of He-like Ni26+ ion in dense plasma ,   Canadian Journal of Physics,Volume 99, Number 7, July 2021

(91) Dishu Dawra, Mayank Dimri, A. K. Singh, Alok K. S. Jha…. Man Mohan ,Theoretical calculations of the photoionization cross sections for the ground and lowest two excited states of Ni XVIII ionMarch 2022The European Physical Journal D 76(3):59

(92)

Rachna Joshi1, Arun Goyal2b, Pranav Kumar3 and Man Mohan4 Theoretical analysis of relativistic energy corrections, partition function and thermodynamic properties of spherically confined hydrogen atom

Eur. Phys. J. D (2022) 76: 149

 

 

 

National and International Collaboration of our Group (Past & Present)

Prof. P G Burke

Department of Applied Mathematics & Theoretical Physics

Queen’s University of Belfast 

Northern Ireland

Prof. A. Hibbert

Department of Applied Mathematics & Theoretical Physics

Queen’s University of Belfast 

Northern Ireland

 

Prof. Francis Keenan

Department of Applied Physics

Queen’s University of Belfast 

Northern Ireland

 

Prof. Maryvonne Dourneuf

Observatoire De Paris

France

 

Prof. J G Doyle

Research Astronomer

College Hill,Armagh

Norther Ireland

 

Prof. Yoshiro Azuma

Sophia Unversity

Faculty of Science and Technology

Tokyo, Japan

 

Prof. Anil Pradhan 

Department of Physics

Ohio-State, University,U.S.A

 

Prof. Sultana Nahar

Department of Physics

Ohio-State, University,U.S.A

 

Prof. Shivanad Chaurisya

BARC, Bhabha Atomic Research Centre 

Laser-Plasma & Attosecond Section

Mumbai, India

 

 

Prof. Robert E Wyatt 

Department of Chemistry 

University of Texas

Texas, U.S.A

 

 

Prof. A.D Bandrauk

Universite de Sherbrooke

CANADA

 

Prof. T. Tung Nguyen-Dang

University Of Laval,Quebec

CANADA

 

 

Prof. Vander Wiel

FOM Institute

Amsterdam, Holland

 

Prof. N.Rahman

Univ. of Trieste 

ITALY

 

Prof.(Dr.) Anil Razdan

DRDO, Laser Science

LASTEC, Delhi, India

 

Prof. Kamal P Singh

Head of Ultrafast –Attosecond Division

IISER, Mohali, India

 

 

 

Prof. Nickolas P. Bigelow

Institute of Optics

Rochester

University, U.S.A

 

Prof. Peter Littlewood

FRS, Fellow of Royal Society

Cavendish Laboratory, U.K.

 

Prof. H. Walther

Max Planck Institute

Garching

Univ. of Munich, Germany

 

 

Prof. A.K. Shukla

Department of Physics

Indian Institute of Technology, Delhi

 

Prof. Y Azuma

Sophia Univ. Japan

 

Prof. K. Hakuta

Chofu, Tokyo, Japan

International Centre for theoretical Physics

 

As Senior Associate of ICTP Trieste, we have also Research Collaboration with Scientists in ICTP, Trieste, ITALY.