Volume 5, Issue 5
November 1975, pages 239-302
pp 239-248 November 1975 Nuclear And Particle Physics
Phenomenological effective interaction for^{40}K
Effective interactions of various forms incorporating central, spin-orbit and tensor dependences of two-nucleon potential are parametrized so as to give a satisfactory description of energy levels of^{40}K. These parameters are applied to calculate energy levels of^{38}Cl. Except for the lowest 3^{−} level, the agreement is satisfactory.
pp 249-259 November 1975 Nuclear And Particle Physics
Charge transfer inpp collisions according to a mixed two component model
V Gupta P K Malhotra D S Narayan
The charge transfer from one hemisphere to the other, observed inpp-collisions is explained on the basis of a ‘mixed two component’ model, which has been proposed previously to account for the multiplicity distribution of charged particles. Results of the calculations, based on the model, for various measurable quantities relating to charge transfer are compared with the available experimental data.
pp 260-267 November 1975 Nuclear And Particle Physics
Fredholm approximants for potential scattering
An approximate method based on Fredholm approximants is used to solve Lippmann-Schwinger equation fors-andp-wave Yukawa ands-wave exponential potential scattering problems. The method is then applied to a problem ofπ-π scattering i nvolving the use of a well known equivalent potential. The equation for partial wave amplitudes is solved to generate the first threeπ-π resonances,ρ, f_{0}, andg, in a self-consistent manner.
pp 268-273 November 1975 Nuclear And Particle Physics
Energy moments of scattering phase shift for partly non-local momentum dependent interaction
The phase shift sum rules recently derived by Puff are extended for a general partly non-local momentum dependent potential. In achieving this, one must use Fredholm determinant of the outgoing solution of the Schrodinger equation instead of the Jost function as was done by Puff. The constants appearing in the moment relations are explicitly defined in terms of the momentum representation of the interaction.
pp 274-283 November 1975 Solids
Lattice imaging technique of high resolution electron microscopy has been employed to examine 4H, 6H and 9R ABO_{3} perovskite polytypes. The lattice images can be correlated with the lattice periodicity and the stacking sequence of AO_{3} layers and BO_{6} octahedra. The study shows the utility and validity of the lattice imaging technique for the study of relatively close-packed systems.
pp 284-288 November 1975 Solids
Infrared absorption study of Cr(CN)_{6}^{n−} complexes doped in KCl crystals
Infrared absorption spectrum of Cr(CN)_{6}^{3−} doped in KCl crystals show that the site symmetry of the ion is predominantlyC_{8} corresponding to one cation vacancy in the nearest neighbour and the other in the next nearest neighbour position with respect to Cr^{3+} ion. X-irradiation produces complexes of the type Cr(CN)_{6}^{4−} and Cr (CN)_{6}^{5−}.
pp 289-293 November 1975 General Relativity
Cylindrically symmetric matter distribution with a magnetic field in Einstein-Cartan theory
In this paper we have extended our earlier studies of solutions of Einstein-Cartan equations to the case where a magnetic field co-exists with the matter distribution. We have obtained an exact solution of Einstein-Cartan-Maxwell equations representing a static cylinder of perfect fluid with an axial magnetic fieldH and a non-zero spin densityK, satisfying the equation of stateρ=γ(p_{r}+p_{s}−H^{2}/4π),γ being a constant. We notice that as a consequence of field equations there exists a direct relation between the pressurep, and the spin densityK, indicating that an increase in pressure would enormously increase the spin density.
pp 294-302 November 1975 Plasma Physics
On the points of bifurcation along the sequence of rotating axisymmetric masses with magnetic fields
It is shown that the points of bifurcation belonging to the third harmonics along the sequence of Maclaurin spheroids viewed from an inertial frame are distinct from the corresponding points along the Maclaurin sequence considered stationary in a rotating frame and occur at eccentricitye=0·73113 ande=0·99608; the Maclaurin spheroids having become dynamically unstable before the second point is reached. A toroidal magnetic field leaves these points uneffected, while a general poloidal field may either raise or lower these points of bifurcation.
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