C S Shastry
Articles written in Pramana – Journal of Physics
Volume 7 Issue 6 December 1976 pp 415-422 Quantum Mechanics
A bound on the number of bound states in the Schrödinger equation
A bound
Volume 23 Issue 2 August 1984 pp 175-186 Nuclear And Particle Physics
Regionwise absorption in nuclear optical model
A mathematical procedure to calculate the contribution to the reaction cross-section from a shell of radius
Volume 31 Issue 3 September 1988 pp 173-184 Nuclear Physics
Semi-classical approach to antiproton-nucleus scattering
The similarities and differences between antiproton-nucleus scattering and heavyion-nucleus scattering are examined. It is found that the one-turning point approach viz Wentzel, Kramers and Brillouin (WKB) approximation can be applied to the analysis of antiproton-nucleus scattering. Using this approximation, a closed form expression for the nuclear phase shift is deduced from the corresponding expression for the heavy-ion scattering phase shift derived by Shastry and the method is illustrated by carrying out the cross-section calculation of$$\bar p + {}^{40}Ca$$ at
Volume 36 Issue 1 January 1991 pp 79-93 Research Articles
Estimates of the number of quantal bound states in one and three dimensions
Using the relation between the number of bound states and the number of zeros of the radial eigen-function
Volume 36 Issue 3 March 1991 pp 271-288
Classical limit of relativistic quantal system with attractive Coulomb interaction
Using the appropriate harmonic oscillator states and reasonable approximations, we construct coherent wavepackets corresponding to the solutions of the Klein-Gordon equation for the attractive potential
Volume 48 Issue 3 March 1997 pp 825-835
Algebraic expressions for effective potential characteristic parameters in heavy ion scattering
I Jamir E F P Lyngdoh C S Shastry
In this paper, we obtain reliable expressions to calculate the barrier and pocket positions of the real part of the effective phenomenological optical potential having Woods-Saxon form factor, for different partial waves. The comparison of the results obtained from these formulae, when compared with the numerical results obtained using Newton-Raphson iterative procedure are found to be quite accurate, with error less than 1%. We also obtain algebraic expressions for estimating
Volume 50 Issue 4 April 1998 pp 271-280
Correlation between zeroes and poles of
I Jamir E F P Lyngdoh C S Shastry
Using several illustrative examples, the nature of resonance poles and the corresponding zeroes of the s-wave
Volume 67 Issue 3 September 2006 pp 401-413 Research Articles
Resonance-like tunneling across a barrier with adjacent wells
S Mahadevan P Prema S K Agarwalla B Sahu C S Shastry
We examine the behavior of transmission coefficient
Volume 94, 2020
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