Research Interests and Accomplishments

LISTED COUNTER-CHRONOLOGICALLY START-TIMEWISE

[A] Interaction of intense short-pulsed laser with macroscopic systems of noble gases: Higher harmonics and filamentation.

The pursuit of attosecond (10^-18 sec) optical pulses continues unabatedly with the basic aim of chasing electrons inside an atom, just as the high-speed photography can capture an image of a bullet speeding through the air. Propagation of ultrashort IR laser pulses through a noble gas leads to the formation of single optical cycle pulses through a non-linear process called filamentation. Interestingly, the intensity of the final pulse is automatically clamped to the field ionization threshold. Utilizing this advantage we have let a filamented pulse move through a noble gas medium to create single pulses of attosecond duration via the higher order harmonic generation. Effects of carrier-envelope-phase on the final pulse formation mechanism are being investigated.

[B] Resonant charge transfer in the interaction of atomic anions with nano-structured surfaces

Resonant charge transfer is an important process among several processes occurring during the interaction of an ionic or a neutral species with a metal surface. Owing to the sensitivity of the process to the electronic structure of the participating candidates, it serves as a valuable probe to understand many salient structural features, namely, the effect of electronic band gap on the transfer dynamics, influence of surface symmetry and surface morphology, initial precursors to catalytic reactions on the surface etc. Significant thrust is being geared to understand the morphology of nanostructured surfaces by using anion beam as a probe with a long term goal of creating "designer's nano-surface" to catalize or de-catalize surface reactions as desired. We investigate this process by using the Cranck-Nicholson wave-packet propagation technique.

[C] Photoionization of electronically delocalized nanosystems: Metal clusters, fullerenes, endohedral fullerenes, carbon nanotubes, quantum dots

Finite systems, including atomic clusters, fullerenes, carbon nanotubes, and quantum dots are interesting objects as they exhibit properties that hover between realms of the single atom and the bulk. Contrary to the point-like atomic nucleus, a positive ion-core with a certain spatial extension provides the primary binding for valence electrons in such a system. As a result, these electrons delocalize over the ion-core and, consequently, the effective electronic potential acquires, in comparison to the atomic potential, a radically different shape: a flat interior and a sharp edge. The influence of this delocalization on both the single-electron and the collective phenomena is the focus of this topic. Calculations are performed in the time-dependent density functional theory to include electronic collectivity.

[D] Photoionization of atoms and ions

Interaction of a single photon with an atom is an excellent ``laboratory'' to understand the effects of many electron correlation. Possibility of precision measurements, owing to advance generation synchrotron light sources worldwide, motivates extensive theoretical work for detail understanding of the photo-processes. Also, photoabsorption studies, particularly involving ions, have crucial importance in numerous astrophysical applications. We employ the relativistic-random phase approximation (RRPA) to calculate the non-resonant photospectra. The autoionizing resonances are calculated by using the relativistic-multichannel quantum defect theory with RRPA combined as an adjunct.

[E] Positronium formation from fullerene materials

Following the impact of positrons with matter the formation of exotic electron-positron bound-pair, the positronium (Ps), is a vital process in nature. Other than probing structure and reaction mechanism of matters, the Ps formation is a unique pathway to the electron-positron annihilation. Production of BEC of Ps, the importance of Ps in diagnosing porous materials and in probing bound-state QED effects, and its role as the precursor of the production of dipositronium molecules and antihydrogen atoms required to study the effect of gravitational force on antimatter are known. However, little attempt of Ps formation by implanting positrons in nanoparticles, particularly in gas phase, has so far been made. Our research aims at calculating and studying Ps formation cross sections from various gas-phase fullerene systems.

Research Grant Awards

1. Applied Research Award (Internal; Northwest Missouri State U): Probing Electronic Properties of Plane and Nanostructured Surfaces by Ions: Simulation via Wavepacket Propagation Technique, 2007.
2. US National Science Foundation Award (Theoretical AMO Physics): Subshell-Differential Photoionization Studies of Single- and Multi-Walled Fullerene Endohedrals; 2008.
3. US National Science Foundation Award (Theoretical AMO Physics): Response of Single- and Multi-Walled Fullerenes and Endohedral Fullerenes to Photons and Charged Particles; 2011.
4. US National Science Foundation Award (Theoretical AM Physics): Photon Impact Ionization of Fullerene and Endofullerene Molecules: Cross Sections, Resonances, and Time Delays; 2014.
5. XSEDE-STAMPEDE cluster grant: Computational Simulations of Electronic Motions and Excitations in Nanostructured Surfaces by Ion-Surface and Adsorbate-Surface Charge-Transfer Interactions; 2014.

My Collaborators

• Franck Lepine
  Institut Lumiere Matiere, Universite Lyon 1-CNRS, Villeurbanne Cedex, France
• Paul-Antoine Hervieux
  Institut de Physique et Chimie des MS, Strausbourg Cedex, France
• Hari Varma
  Department of Physics, Indian Institute pf Technology-Mandi, India
• Mette Gaarde
  Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
• Uwe Thumm
  Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604, USA
• Jan-Michael Rost
  Max-Planck-Institute fuer Physik Komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden, Germany
• Lamine Madjet
  Qatar Environment and Energy Research Institute, Hamid Bin Khalifa University, Doha, Qatar
• Steve Manson
  Department of Physics, Georgia State University, Atlanta, GA 30303, USA
• Pranawa Deshmukh
  Department of Physics, Indian Institute of Technology--Madras, Chennai 600036, India
• Dennis Lindle & Co-experimentalists
  Department of Chemistry, University of Nevada, Las Vegas, NV 89154-4003, USA
• Eugene Kennedy & Co-experimentalists
  Centre for Laser Plasma Research, School of Physical Sciences, Dublin City University, Dublin 9, Ireland
• Uwe Becker
  Fritz-Haber-Institut der Max-Planck-Gesselschaft, Faradayweg 4-6, D-14195 Berlin, Germany
• Ron Phaneuf
  Department of Physics, University of Nevada, Reno, NV 89557-0058, USA

Publications-Talks

Upcoming Papers

1. Oscillations in the photocurrent from quantum dots: Geometric information from reciprocal spectra
   LANL Archive
   Himadri S. Chakraborty, R. G. Nazmitdinov, M.E. Madjet, and J. -M. Rost
2. On the role of anion’s trajectories and distances of closest approach on electronic decay processes through metal surfaces.
   Andrew Schmitz, John Shaw, and Himadri S. Chakraborty.
3. Photoionization of bi-fullerene onions: Hybridization and diffraction.
   Megan R. McCreary, Aakash B. Patel, M.A. McCune,  and Himadri S. Chakraborty.
4. Evolution of valence photoionization along Be@C_N and Mg@C_N endofullerene sequences.
   Aakash B. Patel, Megan R. McCreary, M.E. Madjet,  and Himadri S. Chakraborty.

List of My Publications in Reverse chronology

2017

75. Computing Hydrogen Ion Survival Probability: Academy Student, Graduate Student, and Faculty Experiences
    D. Monismith, J. Shaw, and Himadri S. Chakraborty, Peer review submission to The 26th Association of
    Computing Machinery International Symposium on High Performance Distributed Computing.
    
76. Diffraction in matter-antimatter binding: Positronium formation from C₆₀
    Himadri Chakraborty, Anzumaan Chakraborty, and Paul-Antoine Hervieux, J. Phys.: Conf. Ser. 875, 072002 (2017).
77. Photoionization of open-shell halogen atoms endohedrally confined in C₆₀ 
    Dakota Shields, Ruma De, Mohamed Madjet, Steven T. Manson, and Himadri Chakraborty, J. Phys.: Conf. Ser. 875, 042004 (2017).
78. Attosecond time delays in the valence photoionization of xenon and iodine at energies degenerate with core emissions 
    Maia Magrakvelidze and Himadri Chakraborty, J. Phys.: Conf. Ser. 875, 022015 (2017).
79. Effects of exchange-correlation potentials on the density functional description of C₆₀ versus C₂₄₀ photoionization
    Jinwoo Choi, EonHo Chang, Dylan M. Anstine, Mohamed E. Madjet, and Himadri S. Chakraborty, Phys. Rev. A 95, 023404 (2017).
80. Ubiquitous diffraction resonances in positronium formation from fullerenes
    Paul-Antoine Hervieux, Anzumaan R. Chakraborty, and Himadri S. Chakraborty, Phys. Rev. A Rapid Comm. 95, 021701 (R) (2017).

 2016

69. Attosecond delay of xenon 4d photoionization at the giant resonance and Cooper minimum
    Maia Magrakvelidze, Mohamed E. Madjet, and Himadri S. Chakraborty, Euro. Phys. Rev. A 94, 013429 (2016).
70. First prediction of inter-Coulombic decay of C₆₀ inner vacancies through the continuum of confined atoms
    Ruma De, Maia Magrakvelidze, Mohamed E. Madjet, Steven T. Manson, and Himadri S. Chakraborty, J. Phys. B Letter 49, 11LT01 (2016).
    Chosen for IOPSELECT 2016;
    Selected for Special Issue on the Atomic and Molecular Processes in the Ultracold Regime, the Chemical Regime and Astrophysics
71. Coherence of Auger and inter-Coulombic decay processes in the photoionization of Ar@C₆₀ versus Kr@C₆₀
    Maia Magrakvelidze, Ruma De, Mohammad H. Javani, Mohamed E. Madjet, Steven T. Manson, and Himadri S. Chakraborty, Euro. Phys. J. D 70, 96 (2016).

2015

66. Attosecond time delays in the C60 valence photoemissions at the giant plasmon
    T. Barillot, M. Magrakvelidze, V. Loriot, C. Bordas, P-A. Hervieux, M. Gisselbrecht, P. Johnsson, J. Laksman, E.P. Mansson, S. Sorensen,
    S.E. Canton, J.M. Dahlstroem, G. Dixit, M.E. Madjet,  F. Lepine and, and H. S. Chakraborty, J. Phys.: Conf. Ser 635, 112074 (2015).
67. Attosecond time delay in the valence photoionization of C₂₄₀ versus C₆₀
    Kele Shi, Maia Magrakvelidze, Dylan Anstine, Mohamed Madjet, and Himadri Chakraborty, J. Phys.: Conf. Ser 635, 112025 (2015).
68. Auger-intercoulombic hybridized decay resonances in Kr@C₆₀
    Maia Magrakvelidze, Ruma De,  Steve Manson, and Himadri Chakraborty, J. Phys.: Conf. Ser 635, 112023 (2015).
69. Attosecond time delays in the photoionization of noble gas atoms studies in TDLDA
    Maia Magrakvelidze, M.E. Madjet, Gopal Dixit, Misha Ivanov,  and Himadri Chakraborty, J. Phys.: Conf. Ser 635, 092038 (2015).
70. Attosecond time delay in the valence photoionization and photorecombination of argon: a time-dependent local-density-approximation study
    Maia Magrakvelidze, Mohamed Madjet, and Himadri S. Chakraborty, Phys. Rev. A 91, 063415 (2015).
71. Attosecond structures from the molecular cavity in fullerene photoemission time delay
    Maia Magrakvelidze, Dylan M. Anstine, Gopal Dixit, M.E. Madjet,  and Himadri S. Chakraborty, Phys. Rev. A 91, 053407 (2015).
72. Angular asymmetry and attosecond time delay from the giant plasmon in C₆₀ photoionization
    T. Barillot, C. Cauchy, P-A. Hervieux, M. Gisselbrecht, S.E. Canton, P. Johnsson, J. Laksman, E.P. Mansson, J.M. Dahlstroem, M. Magrakvelidze, G. Dixit, M.E. Madjet,  H.S. Chakraborty,
    E. Suraud, P.M. Dinh, P. Wopperer, K. Hansen, V. Loriot, C. Bordas, S. Sorensen, and F. Lepine, Phys. Rev. A 91, 033413 (2015).
73. Many-electron response of gas-phase fullerene materials to ultraviolet and soft X-ray photons
    H.S. Chakraborty and M. Magrakvelidze, Review article book chapter in From Atomic to Mesoscale: the Role of Quantum Coherence in Systems of Various Complexities, ed. S. Malinovskaya and I. Novikova (World Scientific, Singapore, 2015), pp, 221-237.

2014

58. Photoionization of bonding and antibonding-type atom-fullerene hybrid states in Cd@C₆₀ vs Zn@C₆₀
    M.H. Javani, R. De, M.E. Madjet, S.T. Manson, and H.S. Chakraborty, J. Phys. B 47, 175102 (2014).
59. Resonant Auger – intersite-Coulombic hybridized decay in the photoionization of endohedral fullerenes
    M.H. Javani, J.B. Wise, R. De, M.E. Madjet, , S.T. Manson, and Himadri S. Chakraborty, Phys. Rev. A 89, 063420 (2014).
60. Valence photoionization of noble gas atoms confined in the fullerene C₆₀
    M.H. Javani, H. S. Chakraborty, and S.T. Manson, Phys. Rev. A 89, 053402 (2014).

 2013

55. Time delay in the recoiling valence-photoemission of Ar endohedrally confined in C₆₀
    G. Dixit, Himadri S. Chakraborty, and M.E. Madjet, Phys. Rev. Lett. 111, 203003 (2013).

2012

54. Atom-fullerene hybrid photoionization mediated by coupled d-states in Zn@C₆₀
    Jaykob N. Maser, M.H. Javani, Ruma De, M.E. Madjet, Himadri S. Chakraborty and S.T. Manson, Phys. Rev. A 86, 053201 (2012).
55. Photoexcitation of inter-layer hybrid plasmons in nested fullerenes
    Mathew A. McCune, Ruma De,  M.E. Madjet, Himadri S. Chakraborty and S.T. Manson, Lab Talk, IOP Science, J. Phys. B.
56. Valence photoionization of small alkaline earth atoms endohedrally confined in C₆₀
    M.H. Javani, Megan R. McCreary, Aakash B. Patel, M.E. Madjet, Himadri S. Chakraborty, and S. T. Manson, Euro. Phys. J. D 66, 189 (2012).

 2011

51. Fourier photospectroscopy probes the fullerene confinement geometry
    Aakash B. Patel and Himadri S. Chakraborty, Lab Talk, IOP Science, J. Phys. B. (2011)
52. Plasmon-plasmon coupling in nested fullerenes: Creation of interlayer plasmonic cross modes
    Matthew A. McCune, Ruma de, M.E. Madjet, Himadri S. Chakraborty, and S.T. Manson, J. Phys. B Fast Track Communication 44, 241002 (2011).
53. Fourier photospectroscopy of Xe@C₆₀ through a Xe 4d resonance window: theory versus recent experiment
    Aakash B. Patel and Himadri S. Chakraborty, J. Phys. B Fast Track Communication 44, 191001 (2011).

2010

48. Probing photoelectron multiple-interferences via Fourier spectroscopy in energetic photoionization of Xe@C₆₀
    Andrea Potter, Matthew A. McCune, Rume De, M.E. Madjet, and Himadri S. Chakraborty, Phys. Rev. A 82, 033201 (2010).
49. First prediction of the direct effect of a confined atom on photoionization of the confining fullerene
    Matthew A. McCune, Ruma de, M.E. Madjet, and Himadri S. Chakraborty, J. Phys. B Fast Track Communication 43, 181001 (2010).
50. Band-gap-confinement and image-state-recapture effects in the survival of anions scattered from metal surfaces
    Andrew Schmitz, John Shaw, Himadri S. Chakraborty, and U. Thumm, Phys. Rev. A 81, 042901 (2010).
51. Photoionization of Xe inside C₆₀: Atom-fullerene hybridization, giant cross section enhancement, and correlation confinement resonances
    M.E. Madjet, T. Renger, Dale E. Hopper, Matthew A. McCune, Himadri S. Chakraborty, J. -M. Rost, and S. T. Manson, Phys. Rev. A 81, 013202 (2010).
    Featured in the Virtual Journal of Nanoscale Science and Technology, February 2010.

 2009

44. Ionization of C₆₀ by Fast Bare-Ion Impact
    M.E. Madjet, Himadri S. Chakraborty, and S. T. Manson, J. Phys. Conf. Ser. 194, 102034 (2009).
45. Collective resonances in the photoresponse of metallic nanoclusters
    M.E. Madjet and Himadri S. Chakraborty, J. Phys. Conf. Ser. 194, 022103 (2009).
46. Photoionization of endohedral atoms: Collective, reflective and collateral emissions
    Himadri S. Chakraborty, Matthew A. McCune, M.E. Madjet, Dale E. Hopper, and S. T. Manson, Atomic Cluster Collisions: Structure and Dynamics from the Nuclear to the Biological Scale, American Institute of Physics Conference Proceedings 1197, 111 (2009).
47. Reflective and collateral photoionization of an atom inside a fullerene: Confinement geometry from reciprocal spectra
    Matthew A. McCune, M. E. Madjet, and Himadri S. Chakraborty, Phys. Rev. A Rapid 80, 011201 (2009);
    Featured in the Virtual Journal of Nanoscale Science and Technology, August 2009.
48. Photoionization of hybrid states in endohedral fullerenes
    Himadri S. Chakraborty, M. E. Madjet, T. Renger, J. -M. Rost, and S. T. Manson, Phys. Rev. A Rapid 79, 061201 (2009);
    Featured in the Virtual Journal of Nanoscale Science and Technology, June 2009.

2008

39. Photoionization and fragmentation of fullerene ions
    A. Muller, S. Schippers, R.A. Phaneuf, S.W.J. Scully, E.D. Emmons, M.F. Gharaibeh, M. Habibi, A.L.D. Kilcoyne, A. Aguilar, A.S. Schlachler, L. Dunsch, S. Yang, H. S. Chakraborty, M.E. Madjet, and J.M. Rost, Latest Advances in Atomic Cluster Collisions: Structure and Dynamics from the Nuclear to the Biological Scale, World Scientific (Imperial College Press, London, 2008) p. 177.
40. Unique role of orbital angular momentum in subshell-resolved photoionization of C₆₀
    Matthew A. McCune, M. E. Madjet, and Himadri S. Chakraborty, J. Phys. B Fast Track Communication 41, 201003 (2008).
41. Dynamical Effects of Confinement on Atomic Valence Photoionization in Mg@C₆₀
    Himadri S. Chakraborty, M. E. Madjet, J. M. Rost, and S. T. Manson, Phys. Rev. A 78, 013201 (2008);
    Featured in the Virtual Journal of Nanoscale Science and Technology, July 2008.
42. From single cycle self-compressed filaments to isolated attosecond pulses in noble gases
    A. Couairon, H. S. Chakraborty,  and M. B. Gaarde, Phys. Rev. A 77, 053814 (2008);
    Featured in the Virtual Journal of Ultrafast Science, June 2008.
43. Photoionization of C₆₀: A Model Study
    M. E. Madjet, Himadri S. Chakraborty, Jan M. Rost, and S. T. Manson, J. Phys. B. 41, 105101 (2008).

2007

34. Giant Enhancement in Low Energy Photoionization of Ar Confined in C₆₀
    M. E. Madjet, Himadri S. Chakraborty, and S. T. Manson, Phys. Rev. Letts. 99, 243003 (2007);
    Featured in the Virtual Journal of Nanoscale Science and Technology, December 2007.
35. Reply to the Comment on "Photoexcitation of a volume plasmon in C₆₀ ions"
    S.W.J. Scully, E.D. Emmons, M.F. Gharaibeh, R.A. Phaneuf, A.L.D. Kilcoyne, A.S. Schlachler, S. Schippers, A. Mueller, H. S. Chakraborty, M.E. Madjet, and J.M. Rost, Phys. Rev. Letts. 98, 179602 (2007);
    Featured in the Virtual Journal of Nanoscale Science and Technology, May 2007.
36. An alternative source of isolated attosecond pulses
    M. B. Gaarde, Himadri S. Chakraborty and A. Couairon, SPIE Newsroom of The International Society of Optical Engineering (2007).

2006

31. Single attosecond pulses from high harmonics driven by self-compressed filaments
    Himadri S. Chakraborty, M. B. Gaarde, and A. Couairon, Optics Letters 31, 3662 (2006).

2005

29. On the effect of image states on resonant neutralization of Hydrogen anions near metal surfaces
    Himadri S. Chakraborty, T. Niederhausen, and U. Thumm, Nucl. Instr. Meth. B 241, 43 (2005).
30. Photoexcitation of a volume plasmon in C₆₀ ions
    S.W.J. Scully, E.D. Emmons, M.F. Gharaibeh, R.A. Phaneuf, A.L.D. Kilcoyne, A.S. Schlachler, S. Schippers, A. Mueller, H. S. Chakraborty, M.E. Madjet, and J.M. Rost, Phys. Rev. Letts. 94, 065503 (2005);
    Featured in Physics News Update 2005.

2004

28. Time-resolved photoimaging of image-potential states in carbon nanotubes
    M. Zamkiov, N. Woody, B. Shan, Himadri S. Chakraborty, Z. Chang, U. Thumm, and P. Richard, Phys. Rev. Letts. 93, 156803 (2004);
    Featured in the Virtual Journal of Nanoscale Science and Technology, October 2004.
29. Resonant neutralization of H^- near Cu surfaces: Effects of the surface symmetry and ion-trajectory
    Himadri S. Chakraborty, T. Niederhausen, and U. Thumm, Phys. Rev. A 70, 052903 (2004).
30. Image-potential states of single and multi walled carbon nanotubes
    M. Zamkiov, Himadri S. Chakraborty, A. Habib, N. Woody, U. Thumm, and P. Richard, Phys. Rev. B 70, 115419 (2004);
    Featured in the Virtual Journal of Nanoscale Science and Technology, October 2004.
31. Effects of the surface Miller index on resonant neutralization of Hydrogen anions near Ag surfaces
    Himadri Chakraborty, T. Niederhausen, and U. Thumm, Phys. Rev. A 69, 052901 (2004).

2003

24. Interchannel coupling in ionic photoionization far above threshold: The neon isoelectronic sequence
    Himadri S. Chakraborty, P. C. Deshmukh, and S. T. Manson, The Astrophysical Journal 595, 1307 (2003).
25. Interchannel coupling effects in the spin polarization of energetic photoelectrons
    Himadri S. Chakraborty, P. C. Deshmukh, and S. T. Manson, Phys. Rev. A 67, 052701 (2003).

2002

22. Interchannel coupling in the photoionization of atoms and ions in the x-ray range
    Himadri S. Chakraborty, P. C. Deshmukh, and S. T. Manson, Proceedings of NASA Laboratory Astrophysics Workshop (NASA-Ames Research Center, Moffett Field, CA, USA, May 1-3, 2002.
23. Energetic phtoionization of neutral and ionic metal clusters
    LANL Archive
    Himadri S. Chakraborty and M.E. Madjet, Indian J. Phys. 76B, 421 (2002).
24. Imaging delocalized electron clouds: Photoionization of C_60 in Fourier reciprocal space 
    A. Ruedel, R. Hentges, U. Becker, Himadri S. Chakraborty, M. E. Madjet, and J. -M. Rost, Phys. Rev. Lett. 89, 125503 (2002).

2001

19. Spurious oscillations from local self-interaction correction in high energy photoionization calculations for metal clusters  
    M.E. Madjet, Himadri S. Chakraborty, and J.-M Rost, J. Phys. B: Letter to the Editor 34, L345 (2001).
20. Interchannel coupling in the photoionization of the M-shell of Kr well above threshold: Experiment and theory 
    H.S. Chakraborty, P.C. Deshmukh, D.L. Hansen, O. Hemmers, H. Wang, D.W. Lindle, P. Focke, I.A. Sellin, C. Heske, and S.T. Manson, Phys. Rev. A 63, 042708 (2001).

2000

17. "Anomaly" in atomic nl photoionization with intermediate l
    H.S. Chakraborty, P.C. Deshmukh, and S.T. Manson, Contributed paper in the 20th Summer School and International Symposium on the Physics of Ionized Gases (Zlatibor, Yugaslavia, 2000) p. 51.
18. Relativistic effects in atomic and ionic photoionization: "Anomalous" behavior at the low end of isoelectronic sequences
    H.S. Chakraborty, P.C. Deshmukh, E.W.B. Dias, and S.T. Manson, Astrophys. J. 537, 1094 (2000).
19. Low energy photoionization in the Ar isoelectronic sequence: complex effects of Z
    H.S. Chakraborty, P.C. Deshmukh, and S.T. Manson, Trends in Atomic and Molecular Physics, edited by K. K. Sud and U. N. Upadhyaya (Kluwer Academic/Plenum Publishers, New York, 2000) p. 339.
20. Z-dependence of photoabsorption properties in isoelectronic sequences
    P.C. Deshmukh, H.S. Chakraborty, and S.T. Manson, Trends in Atomic and Molecular Physics, edited by K. K. Sud and U. N. Upadhyaya (Kluwer Academic/Plenum Publishers, New York, 2000) p. 347.

Ancient

13. Relativistic effects in the photoionization of Ne-like iron  
    N. Haque, H.S. Chakraborty, P.C. Deshmukh, S.T. Manson, A.Z. Msezane, N.C. Deb, Z. Felfli, and T.W. Gorczyca, Phys. Rev. A 60, 4577 (1999).
14. Validity of the independent-particle approximation in x-ray photoemission: The exception, not the rule
    D.L. Hansen, O. Hemmers, H. Wang, D.W. Lindle, P. Focke, I.A. Sellin, C. Heske, H.S. Chakraborty, P.C. Deshmukh, and S.T. Manson, Phys. Rev. A Rapid Communications 60, R2641 (1999).
15. Anomalous behavior of the near threshold photoionization cross section of the neon isoelectronic sequence: A combined experimental and theoretical study
    H.S. Chakraborty, A. Gray, J.T. Costello, P. C. Deshmukh, G. N. Haque, E. T. Kennedy, S. T. Manson, and J-P. Mosnier, Phys. Rev. Lett. 83, 2151 (1999).
16. Relativistic effects in the photoionization of atomic beryllium
    E.W.B. Dias, H.S. Chakraborty, P.C. Deshmukh, and S.T. Manson, J. Phys. B 32, 3383 (1999).
17. Photoionization of some closed shell atoms and ions
    H.S. Chakraborty, P.C. Deshmukh, and S.T. Manson, PRAMANA--J. Phys. 50, 607 (1998)
18. Photoionization of atomic ions and related electron scattering processes
    Steven T. Manson, Zikri Altun, Himadri Chakraborty, Eric Dias, Pranawa C. Deshmukh, and C.S. Turner, AIP Conf. Proc. 443, 19 (1998).
19. Photoionization of atomic ions and related recombination processes
    Steven T. Manson, Zikri Altun, Himadri Chakraborty, Eric Dias and Pranawa C. Deshmukh, Proceedings of NASA Laboratory Space Science Workshop (Harvard-Smithsonian Center for Astrophysics, April 1-3, 1998) p. 186—189.
20. Beyond the dipole approximation: angular-distribution effects in valence photoemission 
    O. Hemmers, G. Fisher, P. Glans, D.L. Hansen, H. Wang, S.B. Whitfield, R. Wehlitz, J.C. Levin, I.A. Sellin, R.C.C. Perera, E.W.B. Dias, H.S. Chakraborty, P.C. Deshmukh, S.T. Manson and D.W. Lindle, J. Phys. B: Letter to the Editor 30, L727 (1997).
21. Breakdown of the independent particle approximation in high energy photoionization
    E.W.B. Dias, H.S. Chakraborty, P.C. Deshmukh, S.T. Manson, O. Hemmers, P. Glans, D.L. Hansen, H. Wang, S.B. Whitfield, D.W. Lindle, R. Wehlitz, J.C. Levin, I.A. Sellin and R.C.C. Perera, Phys. Rev. Lett. 78, 4553 (1997).
22. Closed form expression of the Coulomb--Glauber amplitude for arbitrary $nlm \rightarrow n'l'm'$ excitation in the limit of infinite Z_T
    H.S. Chakraborty and D.P. Dewangan, J. Phys.B 27, 3715 (1994).
23. Excited-state to excited-state transition of hydrogen-like ions by impact of charged particles
    D.P. Dewangan and H.S. Chakraborty, J. Phys.B: Letter to the Editor 24, L263 (1991).
24. Comment on the `Analytic evaluation of the B1B cross sections'
    L.J. Dub\'{e}, B. Mensour, D.P. Dewangan and H.S. Chakraborty, J. Phys.B: Letter to the Editor 23, L711 (1990).
25. Analytic evaluation of the B1B cross sections,
    D.P. Dewangan and H.S. Chakraborty, J. Phys.B: Letter to the Editor 22, L415 (1989).

List of important Talks

1. Spin polarization of photoelectrons: recent study in the neon isoelectronic sequence
   XI National Conference on Atomic and Molecular Physics (IIT-Madras, India), December, 1996
2. Photoionization of atoms and ions: new dynamics from spectroscopical degeneracies
   XII National Conference on Atomic and Molecular Physics (M.L.S. University, Udaipur, India), December, 1998
3. Photoionization of atoms and atomic clusters: from correlations to collective effects
   Meeting on Endliche Systeme \& Nichtlineare Dynamik in Quantensystemen (Ringberg, Bayern, Germany) February, 2000
4. High energy valence photoionization of C$_{60}$: Theory
   International Conference on Dynamical Approaches in Atomic and Cluster Physics (MPIPKS-Dresden, Germany), December, 2000
5. Photoionizing Spherical and Non-Spherical Metal Clusters
   International Conference on Many-particle dynamics in Coulomb systems (Bad Honnef near Bonn/FRG, Germany), May 28-June 3, 2000
6. High energy photoionization of atomic jellium clusters
   XIIIth National Conference on Atomic \& Molecular Physics (IACS-Calcutta, India), January, 2001
7. High energy photoionization of C$_{60}$ and C$_{60}$-endohedrals
   VII European Conference on Atomic and Molecular Physics (Berlin, Germany), April 2001
8. Neutralization of hydrogen anions near Cu surfaces
   Wildcorn 2003 at Kansas State University (Manhattan, Kansas), November 2003
9. Resonant charge transfer in the collision of hydrogen anions with metal surfaces
   18th International Conference on the Application of Accelerators in Research and Industry (Downtown Fort Worth, Texas), October 2004
10. Attosecond pulse formation via harmonic generation driven by filamentation-compressed few-cycle laser pulses
    Meeting of the Division of Atomic, Molecular, and Optical Physics (Knoxville, Tennessee), May 2006
11. Enhancement in low energy photoionization of Ar confined in C₆₀
    Meeting of the Division of Atomic, Molecular, and Optical Physics (Calgary, Canada), June 2007
12. Near-ultraviolet photoionization of Xe@C₆₀: Sizable oscillator strength transfer between shell and atom
    Meeting of the Division of Atomic, Molecular, and Optical Physics (State College, Pennsylvania), May 2008
13. Xe@C₆₀: A “melting pot” of multiple photoeffects
    Meeting of the Division of Atomic, Molecular, and Optical Physics (Charlottesville, Virginia), May 2009
14. Photoionization of free and endohedral C₆₀: collective, reflective and collateral emissions.
    The Fourth International Symposium of Atomic Cluster Collisions: Structure and Dynamics from the Nuclear to the Biological Scale (Ann Arbor, Michigan), July 2009
15. Theoretical studies of novel spectroscopy with nanoshells, nanotubes and nanostructured surfaces.
    O.M. Stewart Colloquium in the Department of Physics and Astronomy, University of Missouri (Columbia, Missouri), May 2010
16. Theoretical studies of novel spectroscopy with nanosystems: clusters, shells, and tubes.
    2011 International Workshop on Photoionization and Resonant X-Ray Inelastic Scattering, University of Missouri (Las Vegas, Nevada), May 2011
17. From the Borg to Humans”: Collective, coupled and lonely electrons in excited nanoclusters.
    Colloqua in Indian Institute of Technology, Mandi; in Jaypee Institute of Information Technology, Delhi; and in the Indian Association for the Cultivation of Sciences, Kolkata, June-July 2012
18. Density Functional Studies of Plasmons, Hybridizations, and Electron Diffractions in Carbon Fullerene Materials
    American Physical Society March Meeting, Baltimore, Maryland, March 2013
19. Density Functional Theoretical Studies of the Photoelectron Spectroscopy with Carbon Fullerene Materials
    Colloquium in the Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, New Jersey, April 2013
20. Photoexcited  Resonances in Fullerene Materials and Noble Metal Clusters
    Sixth International Symposium of Atomic Cluster Collisions, Wuhan-Chongqing; and Institute of Physics, Chinese Academy of Science, Beijing, China, July 2013
21. New Resonances from the Coherence of Auger and Intercoulombic (ICD) Processes in the Photoionization of Endohedral Fullerenes
    Meeting of the Division of Atomic, Molecular, and Optical Physics (Madison, Wisconsin), June 2014
22. Photoemission time delay explores the plasmon resonance, molecular cavity and hybridization in fullerene marerials
    Seventh International Symposium of Atomic Cluster Collisions, Madrid, Spain, July 2015

My Classroom-Teachings

• Advanced Quantum Mechanics (fall91)
  (Teaching associate) Physical Research Laboratory, Ahmedabad, India
• Atomic Collisions Theory (fall92)
  (Teaching associate) Physical Research Laboratory, Ahmedabad, India
• Atomic Collisions and Spectroscopy (fall98)
  Indian Institute of Technology, Madras, India
• General Physics-II Recitation (spring02, spring04)
• General Physics-I Lecture (summer04)
• Engineering Physics-I Studio (fall04)
  Department of Physics, Kansas State University, Manhattan USA
• General Physics-I Recitation (fall05)
  Department of Physics and Astronomy, Louisiana State University, Baton Rouge USA
• General Physics I Lecture (fall06-07, fall09-17, spring16)
• General Physics I Lab (fall06-09, spring16)
• Fundamentals of Classical Physics I Studio (fall06-15,17)
• Descriptive Astronomy Lab (fall06,09,11,13,16,17 spring07,09,11,14)
• General Physics II Lecture (spring10,12,14, fall16)
• General Physics II Lab (spring07,08,13 fall17)<
• Fundamentals of Classical Physics II Studio (spring07-17)
• Classical Mechanics Lecture & Computational Lab (spring07)
• Engineering Statics Lecture (spring08,10,14-17)
• Classical Mechanics Lecture & Lab (summer17)
• Electricity & Magnetism Lecture & Lab (fall08,10)
• Computational Physics Lecture & Lab (spring09,11,13,15,17)
• Nanoscale Science Studio I (fall12,14,16)
  Department of Natural Sciences, Northwest Missouri State University, Maryville USA

What I Do When I Don't Do Physics

• SLR Still-Photography
• Watching "Good" Movies
• Listening to Indian and Western Classical Music
• Traveling to Nature (Anzumaan, my son, is a great company)
• Composing Poetries in English and Bangla (my, so dear, mother-tongue)
• Spending Quality-Time with my Family