257 citations · 615 across the 23 of their papers we have counts for
20 papers · 1 filter
Bimodality emerges from transport model calculations of heavy ion collisions at intermediate energy
S. Mallik, S. Das Gupta, G. Chaudhuri
This work is a continuation of our effort [Phys. Rev. C 91, 034616 (2015)] to examine if signatures of a phase transition can be extracted from transport model calculations of heav…
Estimates for temperature in projectile like fragment in geometric and transport models
S. Mallik, S. Das Gupta, G. Chaudhuri
Projectile like fragments emerging from heavy ion collision have an excitation energy which is often labeled by a temperature. This temperature was recently calculated using a geom…
Temperature of projectile like fragments in heavy ion collisions
S. Das Gupta, S. Mallik, G. Chaudhuri
A model in which a projectile like fragment can be simply regarded as a remnant after removal of some part of the projectile leads to an excited fragment. This excitation energy ca…
A model for projectile fragmentation
G. Chaudhuri, S. Mallik, S. Das Gupta
A model for projectile fragmentation is developed whose origin can be traced back to the Bevalac era. The model positions itself between the phenomenological EPAX parametrization a…
Fluctuations in the number of intermediate mass fragments in small projectile like fragments
S. Mallik, G. Chaudhuri, S. Das Gupta
The origin of fluctuations in the average number of intermediate mass fragments seen in experiments in small projectile like fragments is discussed. We argue that these can be expl…
Improvements to model of projectile fragmentation
S. Mallik, G. Chaudhuri, S. Das Gupta
In a recent paper [Phys. Rev. C 044612 (2011)] we proposed a model for calculating cross-sections of various reaction products which arise from disintegration of projectile like fr…
Symmetry energy from fragment observables in the canonical thermodynamic model
G. Chaudhuri, F. Gulminelli, S. Das Gupta
Different formulas relying measurable fragment isotopic observables to the symmetry energy of excited nuclei have been proposed and applied to the analysis of heavy ion collision d…
Grand Canonical Model Predictions For Nuclear Fragmentation
C. B. Das, S. Das Gupta, B. K. Jennings
The grand canonical ensemble has been used to make predictions for composite yields using simple models for nuclear fragmentation. While this gives correct model prediction for hig…
Momentum dependence of symmetry potential in asymmetric nuclear matter for transport model calculations
C. B. Das, S. Das Gupta, C. Gale +1
For transport model simulations of collisions between two nuclei which have significantly different from unity one needs a one-body potential which is both isospin and moment…
Model of multifragmentation, Equation of State and phase transition
C. B. Das, S. Das Gupta, A. Z. Mekjian
We consider a soluble model of multifragmentation which is similar in spirit to many models which have been used to fit intermediate energy heavy ion collision data. We draw a p-V…
Tracking the phase-transition energy in disassembly of hot nuclei
C. B. Das, S. Das Gupta, L. Beaulieu +7
In efforts to determine phase transitions in the disintegration of highly excited heavy nuclei, a popular practice is to parametrise the yields of isotopes as a function of tempera…
Parametrising yields of nuclear multifragmentation
C. B. Das, S. Das Gupta, A. Majumder
We consider a model where, for a finite disintegrating system, yields of composites can be calculated to arbitrary accuracy. An analytic answer for yields is also known in the ther…
Comparison of Canonical and Grand Canonical Models for selected multifragmentation data
C. B. Das, S. Das Gupta, X. D. Liu +1
Calculations for a set of nuclear multifragmentation data are made using a Canonical and a Grand Canonical Model. The physics assumptions are identical but the Canonical Model has…
Incorporating Radial Flow in the Lattice Gas Model for Nuclear Disassembly
C. B. Das, S. Das Gupta
We consider extensions of the lattice gas model to incorporate radial flow. Experimental data are used to set the magnitude of radial flow. This flow is then included in the Lattic…
Caloric Curves for small systems in the Nuclear Lattice Gas Model
C. B. Das, S. Das Gupta
For pedagogical reasons we compute the caloric curve for 11 particles in a lattice. Monte-Carlo simulation can be avoided and exact results are obtained. There is no back-ben…
Microcanonical Lattice Gas Model for Nuclear Disassembly
C. B. Das, S. Das Gupta, S. K. Samaddar
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 m…
Calculations for populations of selected isotopes in intermediate energy heavy ion collisions
A. Majumder, S. Das Gupta
We compute the populations of isotopes of Boron, Carbon and Nitrogen measured experimentally in intermediate energy heavy ion collisions. A two component soluble statistical model…
A study of the phase transition in the usual statistical model for nuclear multifragmentation
S. Das Gupta, A. Z. Mekjian
We use a simplified model which is based on the same physics as inherent in most statistical models for nuclear multifragmentation. The simplified model allows exact calculations f…
Caloric Curve for Finite Nuclei in Thomas-Fermi Theory
J. N. De, S. Das Gupta, S. Shlomo +1
In a finite temperature Thomas-Fermi theory with realistic nuclear interactions, we construct caloric curves for finite nuclei enclosed in a sphere of about times the norma…
Coalescence, Percolation and Nuclear Multifragmentation
S. Das Gupta, C. Gale, K. Haglin
We show that the coalescence model for fragment formation leads to an approximate site percolation model. Features characteristic of a percolation model also appear in microscopic…