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- S. K. Samaddar
- 1998

We construct the equation of state (EOS) of finite nuclei including surface and Coulomb effects in a Thomas-Fermi framework using a finite range, momentum and density dependent two-body interaction. We identify critical temperatures for nuclei below which the EOS so constructed shows clear signals for liquid-gas phase transition in these finite systems.… (More)

- J. N. De, S. K. Samaddar, S. Shlomo, Bidhan Nagar
- 1997

In a finite temperature Thomas-Fermi framework, we calculate density distributions of hot nuclei enclosed in a freeze-out volume of few times the normal nuclear volume and then construct the caloric curve, with and without inclusion of radial collective flow. In both cases, the calculated specific heats Cv show a peaked structure signalling a liquid-gas… (More)

The relativistic Hartree-BCS theory is applied to study the temperature dependence of nuclear shape and pairing gap for 166Er and 170Er. For both the nuclei, we find that as temperature increases the pairing gap vanishes leading to phase transition from superfluid to normal phase as is observed in nonrelativistic calculation. The deformation evolves from… (More)

- S. K. Samaddar
- 2004

The concept of freeze out volume used in many statistical approaches for disassembly of hot nuclei leads to ambiguities. The fragmentation pattern and the momentum distribution (temperature) of the emanated fragments are determined by the phase space at the freeze-out volume where the interaction among the fragments is supposedly frozen out. However, to get… (More)

- B K Agrawal, Tapas Sil, S K Samaddar, J N De
- 2001

The relativistic mean field theory is applied to study some exotic properties of neutron rich nuclei as recently observed, namely, extension of the drip-line for F nuclei from F to F and the appearence of a new shell closure at neutron number N = 16. We find F to be bound against one-neutron dripping but unbound only marginally for two neutron separation.… (More)

- Tapas Sil, J. N. De, +4 authors S. K. Patra
- 2002

Stability of nuclei beyond the drip lines in the presence of an enveloping gas of nucleons and electrons, as prevailing in the inner crust of a neutron star, is studied in the temperature-dependent Thomas-Fermi framework. A limiting asymmetry in the isospin space beyond which nuclei cannot exist emerges from the calculations. The ambient conditions like… (More)

The temperature dependence of the symmetry energy and symmetry free energy coefficients of infinite nuclear matter and of finite nuclei is investigated. For infinite matter, both these coefficients are found to have a weaker dependence on temperature at densities close to saturation; at low but homogeneous densities, the temperature dependence becomes… (More)

- Debashis Chowdhury, Swapan Kumar. Samaddar, Amitabha Sinha
- 2011 2nd International Conference on Computer and…
- 2011

The paper describes a new architecture for implementation of 8 × 8 FDCT (Fast Discrete Cosine Transform) using Distributed Arithmetic (DA). This proposed architecture combines both DA based approaches for distributed input vector and constant coefficients. The described Combined Distributed Arithmetic based DCT (CDA-DCT) architecture has been… (More)

Clustered processor, having 16 clusters with 4 PE’s in each cluster and each PE having two ALU, which can perform simultaneously, is taken. The PE’s operate in a SIMD manner. The cluster and PE can transfer data from one another [1]. 4 FDCT algorithms: namely i>Vetterli ii> Arai’s iii> Loeffler’s iv> Chen’s are taken into consideration. Our proposed 1D FDCT… (More)

Microcanonical calculations are no more difficult to implement than canonical calculations in the Lattice Gas Model. We report calculations for a few observables where we compare microcanonical model results with canonical model results. 25.70.Pq, 24.10.Pa, 64.60.My Typeset using REVTEX 1