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By
Banerjee, B
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The energy density produced in a relativistic heavy ion collision is calculated within the framework of the colour tube model. The chromoelectric field generated in the collision produces quarkantiquark pairs. The motion of these particles is described by Boltzmann equation. The interaction between the quarks and antiquarks is approximated by introducing a relaxation time.
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By
Sarangi, P; Ali, S; Satpathy, L
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6 Citations
The potential between two^{12}C nuclei in linear chain configuration has been calculated microscopically using the AliBodmerαα potential. This potential shows a pocket and compares well in the tail region with the phenomenological potential extracted before, from the data on the quasimolecular resonances of the^{12}C +^{12}C system. This provides support to the diatomic like rotationvibration picture of quasimolecular states.
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By
Sastry, S V. S; Mohanty, A K; Kataria, S K
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The method of optical model analysis of generalized elastic scattering angular distributions (GESA) has been applied to heavy ion scattering to derive fusion spin distributions. This method is used to reproduce the coupled channel fusion spin distributions. When applied to experimental data, particularly to the fissile systems like^{16}O +^{232}Th, the method gives large mean square spin values in agreement with “anomalous” values derived from experimental fission fragment anisotropies.
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By
Satpathy, M; Satpathy, L
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The mechanism of target fragmentation phenomena is explored in a statistical model. It is shown that peripheral interaction arising out of large impact parameter can describe the mass yield distribution of the products from the fragmentation of^{63}Cu by the bombardment ofp,^{12}C and^{40}Ar with energies of 28, 25 and 80 GeV respectively. Important insights into the dynamics is obtained from these reactions as the target remaining the same, the projectile mass varies by forty units and the incident energy per nucleon by fourteen units. Surface properties of the target and projectile are shown to play an important role. Other features like limiting fragmentation and projectile dependence are also borne out in this study.
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By
Sett, G C; Talukdar, B
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We have adapted the phasefunction method for studying on and offshell properties of velocitydependent potentials. The main result presented in this paper is an ansatz for the interpolatingTmatrix function (on or off the energyshell as the case may). Based on this ansatz we have presented an efficient method for computing the offshell extension function which plays a role in the theories of three particle system. We have demonstrated this by means of a model calculation.
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By
Vaidya, S N; Mayya, Y S
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6 Citations
We propose that thedd fusion rate in palladium can be enhanced by the combined screening of the electrostatic interactions by the itinerant deuterons and the conduction electrons. The model assumes that, under certain conditions, deuterium exists as a D^{+} ion in palladium. The combined screening by electrons and the D^{+} ions (deuterons) is found to be more effective than that due to electrons alone. The calculated values of thedd fusion rates, considering screening, for composition PdD at 300 K are 10^{−16} s^{−1} and 10^{−14} s^{−1} for D
_{2}^{+}
ion and D_{2} molecule respectively. These values lie in the range suggested by the recent electrochemical experiments.
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By
Sastry, S V S; Mohanty, A K; Kataria, S K
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1 Citations
The energyE and angular momentuml dependence of optical potential for fusion of^{16}O+^{208}Pb system, observed by Christleyet al [5], is expressed as a function of radial kinetic energy (ɛ) instead of explicitE andl dependence. It is shown that the effects of different channel couplings, which result in different effective potentials, can also be parametrized as a function ofɛ. A correlation is obtained between the energy dependent part of this effective potential and the maximum of the spin enhancement around the Coulomb barrier and both these quantities depend on the details of the channel couplings.
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By
De, A; Mitra, A; Ray, A; Banerjee, SR; Sengupta, M; Chatterjee, A; Kailas, S; Patel, HS; Betigiri, MG; Dutta, SK
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In this paper, we report our measurements of backangle oxygen and carbon particle yields from ^{16}O+^{89}Y, ^{12}C+^{93}Nb reactions forming the same compound nucleus ^{105}Ag at the same excitation energy and spin distribution. We find anomalously large oxygen yield and entrance channel dependence at high excitation energies from ^{16}O+^{89}Y reaction implying formation of a dinuclear orbiting complex. Possible connection between nuclear orbiting and fast fission is also discussed.
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By
Mallesh, K S; Ramachandran, G
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The spinspin interaction of two arbitrary spin systems is considered in some detail. The temporal evolution of the polarization parameters and the correlation parameters has been worked out. Applications of the formalism and the interpretation of the results to processes such as heavyion interactions, muon and nuclear repolarization and depolarization in muonic atoms and interactions of multilevel systems are outlined.
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