Dr. Debasis Ray

	Dr. Debasis Ray Lecturer, Physics   Ph.D. (Science) (1990) (IACS/JU). M.Sc. (Physics) (1982) (CU). B.Sc. (Physics) (1980) (CU).
	National Merit Scholarship awarded by the Govt.of India (1976-1980, 1980-82). Japanese Govt. Fellowship (1991-1992). Alexander-von-Humboldt Fellowship (1993-1995). National Science Council (Taiwan) Fellowship (2000).

 

Contact Addresses

 

	Residence
	Phone (office)	+91 - 33 - 26684561/62/63 Ext. 450
	Mobile	+91 -9433092009
	email	ray.debasis@gmail.com

 

Research Areas

• Atomic Physics in hot and dense plasmas & Plasma Spectroscopy.
• Spectroscopic properties of laser-dressed atoms.
• Spectroscopy of confined quantum systems –
  • Atomic systems under hydrostatic compression.
  • Impurity states in semiconductor nanostructures.

 

Recent Publications

• International Journal
  • Atomic diamagnetism within a dense plasma: Physical Review E, vol.63, 027401 (2001). (Author: Debasis Ray)
  • Influence of a dense plasma on the fine-structure levels of a hydrogenic ion: Physical Review E, vol.62, p.4126 (2000). (Author: Debasis Ray)
  • Diamagnetic level-shift of an impurity ion in a magnetized plasma: Journal of Physics B: At.Mol.Opt.Phys., vol.33, p.L21 (2000). (Author: Debasis Ray)
  • Fine-structure quenching and multiplet distortion in a screened Coulomb atom: The European Physical Journal D, vol.10, p.189 (2000). (Authors: Debasis Ray and Tarun Kanti Roy)
  • Radial and angular correlations in doubly-excited states : A time-dependent perturbation approach: International Journal of Quantum Chemistry, vol.76, p.99 (2000). (Authors: A.K.Das, T.K.Ghosh, D.Ray, T.K.Mukherjee and P.K.Mukherjee)
  • Ionic transitions and oscillator strengths in a Debye Plasma - a case study : The European Physical Journal D, vol.2, p.89 (1998). (Authors: D.Ray and P.K.Mukherjee)
  • Magnetic multipole transitions of a stripped carbon ion in a variety of Debye Plasmas: Journal of Physics B: At.Mol.Opt.Phys., vol.31, p.3479 (1998). (Authors: D.Ray and P.K.Mukherjee)
  • Inter-configuration forbidden transition in Argon isoelectronic ions : The Astrophysical Journal, vol.508, p.959 (1998). (Authors: A.K.Das, T.K.Ghosh, D.Ray, T.K.Mukherjee and P.K.Mukherjee)
  • Quadrupolar transitions in Chlorine Isoelectronic Ions : Physica Scripta, vol.58, p.315 (1998). (Authors: A.K.Das, T.K.Ghosh, D.Ray, T.K.Mukherjee and P.K.Mukherjee)
  • Effect of crystal potential on dynamic polarizability of negative ions: Theoretica Chimica Acta, vol.93, page 177 (1996). (Authors: D.Ray, P.C.Schmidt and Alarich Weiss)
  • A theoretical modeling of static and dynamic polarizability of O2- in large and complex oxides: Zeitschrift fuer Naturforschung, vol.51a, p.1 (1996). (Authors: D.Ray, H.Anton, P.C.Schmidt and Al.Weiss)
  • Radiative transitions in highly-stripped carbon-like ions: Physica Scripta, vol.51, p.81 (1995). (Authors: D. Ray and P.K.Mukherjee)
  • Oscillator strengths for highly stripped ions of carbon isoelectronic sequence: Canadian Journal of Physics, vol.73, p.554 (1995). (Authors: T.K.Ghosh, D.Ray and P.K.Mukherjee)
  • Static dipole polarizabilities of open-shell negative ions: Theoretica Chimica Acta, vol.82, p.223 (1992). (Authors: A.K.Das, D.Ray and P.K.Mukherjee)
  • Doubly excited 1F0 states of two-electron ions - a time-dependent variation- perturbation calculation: Physics Letters A, vol.169, p.452 (1992). (Authors: D.Ray, M.Sugawara,Y.Fujimura, A.K.Das and P.K.Mukherjee)
  • Doubly excited 1Se , 1De and 1Ge states of He, Li+, Be2+ and B3+ : Journal of physics B : At.Mol.Opt.Phys., vol.24, p.1241 (1991). (Authors: D.Ray and P.K.Mukherjee)
  • Magnetic quadrupole transition rates and Rydberg states of the magnesium isoelectronic sequence: The Astrophysical Journal, vol.346, p.1045 (1989). (Authors: D.Ray, P.K.Mukherjee and H.P.Roy)
  • Frequency-dependent polarisabilities and Rydberg transition of the magnesium isoelectronic sequence: Journal of Physics B: At.Mol.Opt.Phys., vol.22, p.2103 (1989). (Authors: D.Ray and P.K.Mukherjee)
  • Time-dependent perturbation calculation for the doubly excited states in two-electron systems: Physics Letters A, v.136, p.423 (1989). (Authors: D.Ray, B.Kundu, P.K.Mukherjee, K.Ohtsuki and K.Ohno)
  • Rydberg states and spin-forbidden transitions of the beryllium isoelectronic sequence Journal of Physics B: At.Mol.Opt.Phys.,vol 21, p. 3191 (1988). (Authors: D.Ray, B.Kundu and P.K.Mukherjee)
  • Dynamic Multipole polarizabilities and Rydberg states of the beryllium isoelectronic sequence: Physical Review A,vol.37, p.1095 (1988). (Authors: D.Ray, B.Kundu and P.K.Mukherjee)
  • Dynamic Polarizabilities and Rydberg states of the sodium isoelectronic sequence: Physical Review A, vol.34, p.62 (1986). (Authors: B.Kundu, D.Ray and P.K. Mukherjee)
• International Conferences
  • Dynamic polarizability and Rydberg states of sodium: in Abstracts of the Vth International Congress on Quantum Chemistry (ICQC), Montreal, Canada, August 18-24 (1985), no.36-c, page 232. (Authors: D.Ray, B.Kundu and P.K.Mukherjee)
  • Rydberg states of beryllium and sodium isoelectronic sequence: in the Book of Abstracts of the International Conference on the impact of Supercomputers on Chemistry, University of London, London, England, 13-16 April (1987), page 40. (Authors: D.Ray, B.Kundu and P.K.Mukherjee)
  • Compound atom states of two electron atoms: a time-dependent perturbation approach: in Abstracts of the First Asia-Pacific Conference on Atomic and Molecular Physics, Taipei, Taiwan, Republic of China,November 25-29 (1988), no.B15, page 64. (Authors: D.Ray and P.K.Mukherjee)
  • Time-dependent perturbation calculation for the doubly excited states in two-electron systems: in Abstracts of contributed papers of the XVI th. International Conference on the Physics of Electronic and Atomic Collisions (XVI ICPEAC), New York, 26 July-1 August (1989), page 840. (Authors: B.Kundu, D.Ray and P.K.Mukherjee)
  • A new theoretical approach for the study of double excitations in atoms: in Abstracts of contributed papers of the XVII th. International Conference on the Physics of Electronic and Atomic collisions (XVII ICPEAC), Brisbane 10-16 July (1991). (Authors: D.Ray and P.K.Mukherjee)
• National Conferences
  • Frequency-dependent atomic response within a high-density plasma: in the Book of Abstracts of PLASMA-2003, The 18th National Symposium on Plasma Science and Technology, Ranchi, India, December 08-11 (2003), page 120-121. (Author: Debasis Ray)
  • “Extra-ordinary” Darwin shift in a hydrogen atom embedded in a weakly-coupled plasma: in the Book of Abstracts of PLASMA 2005, The 20th National Symposium on Plasma Science and Technology, Cochin, India, December 5-7 (2005), page 28. (Authors: Madhab De and Debasis Ray)
  • Spin-orbit energy in a hydrogen atom under hydrostatic compression: in the Book of Abstracts of TC- 2005, Topical Conference on Atomic, Molecular and Optical Physics, Kolkata, India, December 13-15 (2005), page p16. (Authors: Avijit Ghosh and Debasis Ray)
  • Influence of a weakly-coupled plasma on second-order Stark effect in the ground state of a hydrogen atom: in the Book of Abstracts of PLASMA-2006, The 21st National Symposium on Plasma Science and Technology, Jaipur, India, December 19-22 (2006). (Author: Madhab De and Debasis Ray)
  • Vacuum polarization in hydrogenic ion in the presence of a dense strongly-coupled plasma: in the Book of Abstracts of PLASMA 2006, The 21st National Symposium on Plasma Science and Technology, Jaipur, India, December 19-22 (2006). (Authors: Joyee Basu and Debasis Ray)
  • ²P_1/2-²P_^3/2 fine-structure in a sodium atom embedded in a weakly-coupled Debye plasma: : in the Book of Abstracts of PLASMA-2007, The 22nd National Symposium on Plasma Science and Technology, Ahmedabad, India, December (2007) . (Author: Joyee Basu and Debasis Ray)

 

Courses Undertaken

 

Department of Physics, BESU, Shibpur - 7111 03, INDIA