V K Gupta
Articles written in Pramana – Journal of Physics
Volume 8 Issue 2 February 1977 pp 174-183 Nuclear And Particle Physics
Neutral current effects in the parity violating nuclear force
K Datta V K Gupta N Panchapakesan J N Passi R P Saxena
The measurements of the Δ
Volume 13 Issue 6 December 1979 pp 667-672 Nuclear Physics
Coulomb energy of^{3}He and charge-symmetry breaking in nuclear forces
We report a calculation of Coulomb energy of^{3}He with two-term separable potentials of a form proposed recently, and a perturbative calculation of the charge-symmetry-breaking potential, again in a two-term separable form. By using potential sets adjusted to various values of proton-neutron effective range difference, some limit is sought to be placed on this quantity, about which nothing is known experimentally.
Volume 14 Issue 4 April 1980 pp 303-313 Nuclear And Particle Physics
Inelastic interactions of 9.38 GeV/c deuteron in emulsion
S K Badyal V K Gupta G L Kaul Balvinder Kour Y Prakash N K Rao S K Sharma Gian Singh
Characteristics of the inelastic interactions of 9.38 GeV/c deuterons with nuclear emulsion nuclei have been studied. These have been compared with nucleon-nucleus interactions at a corresponding momentum. The probability of nucleon stripping in deuteron-nucleus interactions has been observed to be 0.5. The charged particle multiplicity in deuteron-nucleus interactions exhibit
Volume 14 Issue 6 June 1980 pp 425-431 Nuclear And Particle Physics
Electromagnetic form factors of^{3}He and^{3}H
The electric and magnetic form factors of^{3}He and^{3}H are calculated with 3-nucleon wave functions obtained from the solution of Schrödinger equation with separable potentials of two different shapes which have already been employed in the coulomb energy calculation. The effect of important meson exchange corrections is evaluated and their dependence on the wave function studied. The form factors can depend rather sensitively on the nucleon form factors as well, and this dependence is studied by using two different parametrisations for the latter.
Volume 15 Issue 6 December 1980 pp 559-570 Nuclear And Particle Physics
G L Kaul S K Badyal I K Daftari V K Gupta B Kour L K Mangotra Y Prakash N K Rao S K Sharma Gian Singh
Experimental data on average shower particle multiplicity (〈
Volume 18 Issue 3 March 1982 pp 279-289 Nuclear And Particle Physics
Coherent pion-photoproduction by deuterons at intermediate energies
V S Bhasin V K Gupta J D Anand
Non-relativistically exact single scattering calculations for coherent pion photoproduction by deuterons at intermediate photon energies (200 MeV to 500 MeV) are presented. For the two-body
Volume 22 Issue 6 June 1984 pp 497-511 Nuclear Physics
Deuteron form factors and the tensor force
Results of a non-relativistic calculation of deuteron form factors are presented for separable potentials with and without tensor force. The tensor term in triplet state is added in such a way as to keep the values of deuteron binding energy,
Volume 32 Issue 1 January 1989 pp 13-32 Nuclear Physics
Nucleon-nucleon interaction with tensor forces in the quark compound bag model
A model for
Volume 45 Issue 2 August 1995 pp 195-208
Neutrino emissivity of quark matter at finite temperatures
We evaluate the emissivity rates for d-decay and s-decay by exactly solving the angular integrals involved and without assuming the degeneracy of electrons. We have also studied the effects of QCD coupling constant as well as the s-quark mass on the emissivity rates. We find that these parameters are important in determining the threshold and extinction densities for d- and s-decays.
Volume 49 Issue 4 October 1997 pp 443-453 Research Articles
Bulk viscosity of neutron stars
V K Gupta A Wadhwa S Singh J D Anand
Viscosity of neutron stars has been a continuing area of research for many years now. Recently interest in this field has revived because of the possibility of URCA processes in neutron stars. In this paper we report calculation of the bulk viscosity of neutron stars from these processes. For this purpose we have used the
Volume 54 Issue 5 May 2000 pp 737-749 Research Articles
Bulk viscosity of strange quark matter in density dependent quark mass model
J D Anand N Chandrika Devi V K Gupta S Singh
We have studied the bulk viscosity of strange quark matter in the density dependent quark mass model (DDQM) and compared results with calculations done earlier in the MIT bag model where
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