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Dutta, D.; Sastry, S. V. S.; Mohanty, A. K.; Kumar, K.; Choudhury, R. K.
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3 Citations
The photon yield from a baryonrich quark gluon plasma (QGP) at SPS energy has been estimated. In the QGP phase, rate of photon production is evaluated up to twoloop level. In the hadron phase, dominant contribution from π,ρ, ω mesons has been considered. The evolution of the plasma has been studied with appropriate equation of state in both QGP and hadron phase for a baryonrich system. At SPS energy, the total photon yield is found to increase marginally in the presence of baryon density.
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Mitra, S.; Pramanik, A.; Chakrabarty, D.; Mukhopadhyay, R.
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7 Citations
Results of the quasielastic neutron scattering (QENS) measurements on the dynamics of excess water in hydrotalcite sample with varied content of excess water are reported. Translational motion of excess water can be best described by random translational jump diffusion model. The observed increase in translational diffusivity with increase in the amount of excess water is attributed to the change in binding of the water molecules to the host layer.
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Narasimhan, S L; Mukhopadhyay, R
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6 Citations
We propose a gaussian model for the distribution of rotational tunneling lines which constitute the experimentally observed inelastic neutron scattering spectra in the range 0 to 0.6 meV from the mixed system (NH_{4})_{x}K_{1−x}I. The intensity profiles generated by this model are in remarkable agreement with the experimentally observed ones.
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Rout, R K; Shyam, A
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In a low energy Mathertype plasma focus device, hot spots having temperature in the range of few KeV have been observed even 1 µs after the pinch disintegration and in regions away from the pinch area. These hot spots are perhaps created by the thermal runway due to temperature fluctuations in the background gas.
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Balasubramanian, T K; Bellary, V P
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A theoretical derivation of closed form expressions for the intensities of all the rotational branches arising out of^{4}Σ^{4}Π electronic transition in a diatomic molecule is described. In the present theory the tradition of treating the coupling in the^{4}Σ state as belonging to Hund’s case (b) is discarded; instead a fullfledged intermediate coupling treatment which rigorously takes into account the spinspin and second order spinorbit effects is presented. Since accurate intermediate coupling treatment of^{4}Π, in analytically closed form, is not possible, the^{4}Π is first restricted to the extreme coupling scheme Hund’s case (a)(or case (b)); the effect of spin uncoupling (or spinorbit and spinspin interactions) is then incorporated through a first order perturbation calculation.
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Chaddah, P
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A scheme to calculate the electron momentum density in simple liquid metals, with the effect ofboth electron correlations and ionic potentials included, is given. This scheme is applied to the case of liquid aluminium. The results are substantially different from calculations considering only the ion potentials, and also from the results for a homogeneous electron gas of corresponding density.
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Ram, Nathu; Sundara Rao, I S; Mehta, M K
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12 Citations
It is demonstrated that the practical range of a beta spectrum (E_{max}=E) in any material can be obtained from mass absorption coefficient (μ/ρ) values. It is further shown that a semiempirical relation likeμ/ρ =AE^{−B} in whichA andB are related to the atomic numberZ, of the absorber can be used for determiningμ/ρ of any material of known atomic numberZ. Theβ particle ranges are compared with theoreticalcsda and practical ranges from literature.
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Moholkar, S V; Warke, C S; Gunye, M R
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The energy spectra of the evenparity (K^{π} = 2^{+}, 3^{+}) and oddparity (K^{π} = 3^{−}, 4^{−}) sidebands in the doubly even nucleus^{170}Yb are studied in the framework of the microscopic method of variation after angular momentum projection with nucleon number conservation in each projected state. The calculated energy spectra of the ground band and the four side bands in^{170}Yb are in good agreement with the corresponding experimental results.
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