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Search: Author = A.Bhattacharyya

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2022PA22      Nucl.Phys. A1023, 122464 (2022)

S.Pal, G.Kadam, A.Bhattacharyya

Hadron resonance gas model with repulsive mean-field interactions: Specific heat, isothermal compressibility and speed of sound

doi: 10.1016/j.nuclphysa.2022.122464
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2021BH12      Phys.Rev. C 104, 045801 (2021)

A.Bhattacharyya, U.Datta, A.Rahaman, S.Chakraborty, T.Aumann, S.Beceiro Novo, K.Boretzky, C.Caesar, B.V.Carlson, W.N.Catford, M.Chartier, D.Cortina-Gil, P.Das, G.D.Angelis, P.Diaz Fernandez, H.Emling, H.Geissel, D.Gonzalez-Diaz, M.Heine, H.Johansson, B.Jonson, N.Kalantar-Nayestanaki, T.Kroll, R.Krucken, J.Kurcewicz, C.Langer, T.Le Bleis, Y.Leifels, J.Marganiec, G.Munzenberg, T.Nilsson, C.Nociforo, V.Panin, S.Paschalis, R.Plag, R.Reifarth, M.V.Ricciardi, C.Rigollet, D.Rossi, C.Scheidenberger, H.Scheit, H.Simon, Y.Togano, S.Typel, Y.Utsuno, A.Wagner, F.Wamers, H.Weick, J.S.Winfield

Neutron capture cross sections of light neutron-rich nuclei relevant for r-process nucleosynthesis

NUCLEAR REACTIONS 208Pb, 12C(29Na, X), (30Na, X), (33Mg, X), (35Al, X), E=410-430 MeV/nucleon, [secondary 29,30Na, 33Mg, 35Al beams from fragmentation of 540 MeV/nucleon 40Ar beam, followed by separation of ions of interest using the FRS-ALADIN-LAND apparatus at GSI]; measured reaction products, Eγ, Iγ, invariant mass spectra in coincidence with the sum energy of γ rays in different energy ranges using an array of 162 NaI(Tl) detectors for γ rays emitted from the excited core of the projectiles after Coulomb dissociation; deduced number of E1 type virtual photons from Coulomb, invariant mass spectra of breakup of incident beams into 28Na, 29Na, 32Mg and 34Al and one neutron in each case, and analyzed using direct breakup model. 29Na, 30Na, 33Mg, (γ, n), E*=2-16 MeV; 35Al(γ, n), E*=5-20 MeV, virtual photons from Coulomb breakup of incident beams; deduced photoabsorption σ(E) as function of excitation energy. 28,29Na, 32Mg, 34Al(n, γ), E<13 MeV; deduced neutron capture σ(E) using the photoabsorption cross sections. 28,29Na, 32Mg, 34Al(n, γ), T9=0.01-100; deduced astrophysical total reaction rates at the onset and at the end of the r-process. 14C(n, γ), E(cm)=10-1000 keV; analyzed previous experimental cross section data, and compared with theoretical calculations. 29,30Na, 33Mg, 35Al; deduced spectroscopic factors for the occupied orbitals of valence neutron(s) in the ground states from Coulomb breakup cross sections, and compiled previous experimental spectroscopic factors. Relevance to neutrino-driven wind model of core-collapse supernovae, and r-process nucleosynthesis.

doi: 10.1103/PhysRevC.104.045801
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2021HA42      Eur.Phys.J. A 57, 283 (2021)

M.Hasanujjaman, G.Sarwar, M.Rahaman, A.Bhattacharyya, J.-e.Alam

Dynamical spectral structure of density fluctuation near the QCD critical point

doi: 10.1140/epja/s10050-021-00589-3
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2021KU14      Nucl.Phys. A1013, 122226 (2021)

V.Kumar, K.Saha, P.Shukla, A.Bhattacharyya

Bottomonia production in p + p collisions under NRQCD formalism

doi: 10.1016/j.nuclphysa.2021.122226
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2021MO16      Phys.Rev. C 103, 054908 (2021)

A.Motornenko, S.Pal, A.Bhattacharyya, J.Steinheimer, H.Stoecker

Repulsive properties of hadrons in lattice QCD data and neutron stars

doi: 10.1103/PhysRevC.103.054908
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2021PA17      Nucl.Phys. A1010, 122177 (2021)

S.Pal, A.Bhattacharyya, R.Ray

Modified excluded volume hadron resonance gas model with Lorentz contraction

doi: 10.1016/j.nuclphysa.2021.122177
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2020HA29      Phys.Rev. C 102, 034910 (2020)

M.Hasanujjaman, M.Rahaman, A.Bhattacharyya, J.Alam

Dispersion and suppression of sound near the QCD critical point

doi: 10.1103/PhysRevC.102.034910
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2019BH03      Phys.Rev. C 99, 045207 (2019)

A.Bhattacharyya, S.K.Ghosh, S.Maity, S.Raha, R.Ray, K.Saha, S.Samanta, S.Upadhaya

Thermodynamics of strongly interacting matter in a hybrid model

doi: 10.1103/PhysRevC.99.045207
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2016BH06      Europhys.Lett. 115, 62003 (2016)

A.Bhattacharyya, S.K.Ghosh, R.Ray, S.Samanta

Exploring effects of magnetic field on the hadron resonance gas

doi: 10.1209/0295-5075/115/62003
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2016CH29      Phys.Rev. C 94, 015802 (2016)

D.Chakraborty, S.Dutta, G.Gangopadhyay, A.Bhattacharyya

Radiative proton capture cross sections in the mass range 40-54

NUCLEAR STRUCTURE 40Ar, 41K, 40,42,43,44,46Ca, 45Sc, 46,47,48,49,50Ti, 51V, 50,52,53,54Cr, 54Fe; calculated binding energies (BE) and charge radii using RMF theory with the NpNn correction. Comparison with experimental values.

NUCLEAR REACTIONS 41K, 42,44,48Ca, 46,47,48,49,50Ti, 50,53,54Cr, 51V, 54Fe(p, γ), E=1-3 MeV; calculated astrophysical S factors and compared with available experimental values. 42Ti, 43,46V, 43Sc, 47Cr, 52Fe, 52,53Co(p, γ), T9=1-5; calculated proton capture reaction rate, and compared with NON-SMOKER results. Hauser-Feshbach formalism with the reaction code TALYS1.6.

doi: 10.1103/PhysRevC.94.015802
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2016DU04      Phys.Rev. C 93, 024602 (2016)

S.Dutta, D.Chakraborty, G.Gangopadhyay, A.Bhattacharyya

Neutron capture reactions near the N=82 shell-closure

NUCLEAR REACTIONS 140Ce(n, n), E=1.5, 2.0, 2.5, 3.0 MeV; 141Pr(n, n), E=0.878, 1.2 MeV; 142Nd(n, n), E=2.5 MeV; 148Sm(n, n), E=2.7; calculated σ(θ) and compared to experimental data. 133Cs, 139La, 140Ce, 141Pr, 135,136,137,138Ba, 142,143,144,145,146Nd, 144,147,148,149Sm(n, γ), E=0.001-1 MeV; calculated σ(E), Maxwellian-averaged cross sections (MACS) at kT=30 keV, and compared to experimental data. Semimicroscopic optical model with the DDM3Y nucleon-nucleon interaction. Relevance to astrophysical s- and p-processes for nuclei near N=82 neutron shell-closure.

NUCLEAR STRUCTURE 133,134,135,136,137Cs, 130,132,134,135,136,137,138Ba, 138,139La, 136,138,140,141,142Ce, 141,142,143Pr, 142,143,144,145,146,147Nd, 147,148Pm, 144,147,148,149Sm; calculated charge densities, and root-mean-square (rms) charge radii using relativistic mean-field approach. Comparison with experimental values.

doi: 10.1103/PhysRevC.93.024602
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2016DU17      Phys.Rev. C 94, 024604 (2016)

S.Dutta, G.Gangopadhyay, A.Bhattacharyya

Neutron capture reactions relevant to the s and p processes in the region of the N=50 shell closure

NUCLEAR STRUCTURE 82,83,84,86Kr, 85Rb, 84,86,87,88Sr, 89Y, 90,91,92,94Zr, 93Nb, 92,94,95Mo, 96,98Ru; calculated binding energies, charge radii using RMF theory and compared with experimental data.

NUCLEAR REACTIONS 85,86,87Rb, 84,86,87,88,89,90Sr, 89Y, 90,91,92,93,94,95,96Zr, 93,94,95Nb, 92,94,95,96,97,98,99Mo, 99Tc(n, γ), E=0.001-1 MeV; calculated σ(E), Maxwellian averaged cross sections (MACS), astrophysical reaction rates. Statistical semimicroscopic Hauser-Feshbach approach with a folded optical-model potential constructed from standard DDM3Y real nucleon-nucleon interaction, using TALYS1.8 code. Comparison with available experimental data. Relevance to astrophysical s and p processes.

doi: 10.1103/PhysRevC.94.024604
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2016DU23      Phys.Rev. C 94, 054611 (2016)

S.Dutta, G.Gangopadhyay, A.Bhattacharyya

Microscopic folding model analysis of the radiative (n, γ) reactions near the Z=28 shell closure and the weak s process

NUCLEAR REACTIONS 56,57,58,60Fe, 58,60,61,62,63,64Ni, 59Co, 63,65Cu, 64,66,68Zn, 69,71Ga(n, γ), E=0.001-1 MeV; calculated σ(E) and Maxwellian averaged cross sections (MACS) at kT=30 keV using TALYS1.8 computer code for statistical model Hauser-Feshbach calculations in a microscopic approach with the optical model potential from the density-dependent M3Y nucleon-nucleon interaction, and radial matter densities of target nuclei from relativistic-mean-field (RMF) theory. Comparison with experimental data.

NUCLEAR STRUCTURE 56,57,58Fe, 58,60,61,62,64Ni, 59Co, 63,65Cu, 64,66,67,68,70Zn, 69,71Ga, 72Ge; calculated rms charge radii from relativistic-mean-field theory, and compared with experimental values.

doi: 10.1103/PhysRevC.94.054611
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2015BH05      Phys.Rev. C 91, 041901 (2015)

A.Bhattacharyya, R.Ray, S.Samanta, S.Sur

Thermodynamics and fluctuations of conserved charges in a hadron resonance gas model in a finite volume

doi: 10.1103/PhysRevC.91.041901
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2015CH34      Phys.Rev. C 91, 057602 (2015)

D.Chakraborty, S.Dutta, G.Gangopadhyay, A.Bhattacharyya

Microscopic study of (p, γ) reactions in the mass region A=110 - 125

NUCLEAR STRUCTURE 110Pd, 110,111,112,113,114,116Cd, 113,115In, 112,114,115,116,117,118,119,120,122,124Sn, 121,123Sb, 122,123,124,125Te, 124Xe; calculated binding energies, and charge radii. Relativistic meanfield (RMF) calculations. Comparison with experimental values.

NUCLEAR REACTIONS 121,123Sb, 112,114,116,119Sn(p, γ), E=1.5-4.5 MeV; calculated astrophysical S factors and compared with experimental values. 111,113,114In, 112,114,115Sn(p, γ), T9=1.5-4; calculated proton capture rates and compared with NON-SMOKER calculations. Optical potential model with density-dependent (DDM3Y) interaction.

doi: 10.1103/PhysRevC.91.057602
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2015DU04      Phys.Rev. C 91, 025804 (2015)

S.Dutta, D.Chakraborty, G.Gangopadhyay, A.Bhattacharyya

Low-energy proton capture reactions in the mass region 55-60

NUCLEAR STRUCTURE 56,58Fe, 58,60Ni; calculated density profiles. 55,56Mn, 56,57,58Fe, 59Co, 58,60Ni; calculated charge radii. Relativistic mean field (RMF) theory. Comparison with experimental data.

NUCLEAR REACTIONS 55Mn(p, γ)56Fe, 59Fe(p, γ)59Co, 59Co(p, γ)60Ni, 58Ni(p, γ)59Cu, 60Ni(p, γ)61Cu, E=1-3.5 MeV; calculated astrophysical S-factor. Comparison with available experimental data. 56Ni(p, γ)57Cu, 57Cu(p, γ)58Zn, 59Cu(p, γ)60Zn, at T9=1-4; calculated astrophysical reaction rates. Comparison with calculations from NON-SMOKER model. Microscopic optical model using the relativistic mean field theory and DDM3Y interaction.

doi: 10.1103/PhysRevC.91.025804
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2014BH07      Phys.Rev. C 89, 064905 (2014)

A.Bhattacharyya, S.K.Ghosh, A.Lahiri, S.Majumder, S.Raha, R.Ray

Isospin-symmetry breaking and baryon-isospin correlations from the Polyakov-Nambu-Jona-Lasinio model

doi: 10.1103/PhysRevC.89.064905
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2014BH08      Phys.Rev. C 89, 065806 (2014)

B.Bhowmick, M.Bhattacharya, A.Bhattacharyya, G.Gangopadhyay

Massive neutron stars with a hyperonic core: A case study with the IUFSU relativistic effective interaction

doi: 10.1103/PhysRevC.89.065806
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2014BH12      Eur.Phys.J. A 50, 125 (2014)

B.Bhowmick, A.Bhattacharyya, G.Gangopadhyay

Quadrupole deformation in Λ-hypernuclei

doi: 10.1140/epja/i2014-14125-7
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2014BH13      Phys.Rev. C 90, 034909 (2014)

A.Bhattacharyya, S.Das, S.K.Ghosh, R.Ray, S.Samanta

Fluctuations and correlations of conserved charges in an excluded-volume hadron resonance gas model

doi: 10.1103/PhysRevC.90.034909
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2012BH08      Int.J.Mod.Phys. E21, 1250069 (2012)

B.Bhowmick, A.Bhattacharyya, G.Gangopadhyay

Ground states and excited states of hypernuclei in relativistic mean field approach

NUCLEAR STRUCTURE 6He, 8,10Be, 11,12,13B, 12,14C, 14,15N, 17,18O, 20Ne, 24Mg, 27Al, 33,36S, 41,42,49Ca, 55Fe, 60Ni, 86,87Kr, 88Rb, 91Zr, 51V, 89Y, 139La, 208,209,210Pb; calculated binding, hyperon separation and excitation energies for single and double hypernuclei. Relativistic mean field theory, FSU gold force.

doi: 10.1142/S0218301312500693
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2011CH06      Phys.Rev. C 83, 027601 (2011)

P.R.Chowdhury, G.Gangopadhyay, A.Bhattacharyya

Stability against α decay of some recently observed superheavy elements

RADIOACTIVITY 274Bh, 278Mt, 281Ds, 282Rg, 285Cn, 285,286Nh, 288,289Fl, 289,290Mc, 293,294Ts(α); calculated half-lives, quantum tunneling probabilities using DDM3Y effective interactions, RMF densities with NL3, TM1 and FSUGold forces. Comparison with measured half-lives.

doi: 10.1103/PhysRevC.83.027601
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2011DE22      Nucl.Phys. A862-863, 267c (2011)

P.Deb, A.Bhattacharyya, S.K.Ghosh, R.Ray, A.Lahiri

QCD phase diagram using PNJL model with eight-quark interactions

doi: 10.1016/j.nuclphysa.2011.05.068
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2010CH20      Phys.Rev. C 81, 062801 (2010)

P.R.Chowdhury, A.Bhattacharyya, D.N.Basu

Isospin asymmetric nuclear matter and properties of axisymmetric neutron stars

doi: 10.1103/PhysRevC.81.062801
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2009DE17      Phys.Rev. C 79, 055208 (2009)

P.Deb, A.Bhattacharyya, S.Datta, S.K.Ghosh

Mesonic excitations of QGP: Study with an effective model

doi: 10.1103/PhysRevC.79.055208
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2007BH08      Phys.Rev. C 76, 052801 (2007)

A.Bhattacharyya, S.K.Ghosh, R.Mallick, S.Raha

General relativistic effects on the conversion of nuclear to two-flavor quark matter in compact stars

doi: 10.1103/PhysRevC.76.052801
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2007PA06      Phys.Rev. C 75, 014304 (2007)

T.Papenbrock, A.Bhattacharyya

Density-functional theory for the pairing Hamiltonian

doi: 10.1103/PhysRevC.75.014304
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2006BA82      Nucl.Phys. A774, 769 (2006)

S.Banerjee, A.Bhattacharyya, S.K.Ghosh, E.-M.Ilgenfritz, S.Raha, B.Sinha, E.Takasugi, H.Toki

Colour entangled orphan quarks and dark energy from cosmic QCD phase transition

doi: 10.1016/j.nuclphysa.2006.06.133
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2006BH05      Phys.Rev.C 74, 065804 (2006)

A.Bhattacharyya, S.K.Ghosh, P.S.Joarder, R.Mallick, S.Raha

Conversion of a neutron star to a strange star: A two-step process

doi: 10.1103/PhysRevC.74.065804
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2005BH01      Nucl.Phys. A747, 268 (2005)

A.Bhattacharyya, R.J.Furnstahl

The kinetic energy density in Kohn-Sham density functional theory

doi: 10.1016/j.nuclphysa.2004.10.008
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2005BH03      Phys.Lett. B 607, 259 (2005)

A.Bhattacharyya, R.J.Furnstahl

Single-particle properties from Khon-Sham Green's Functions

doi: 10.1016/j.physletb.2004.12.056
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2005BH07      Phys.Rev. C 71, 048801 (2005)

A.Bhattacharyya, S.K.Ghosh, M.Hanauske, S.Raha

Rotating twin stars and signature of quark-hadron phase transition

doi: 10.1103/PhysRevC.71.048801
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2003BA30      Nucl.Phys. A715, 827c (2003)

S.Banerjee, A.Bhattacharyya, S.K.Ghosh, S.Raha, B.Sinha, H.Toki

Relics of Cosmic Quark-Hadron Phase Transition and Massive Compact Halo Objects

doi: 10.1016/S0375-9474(02)01508-7
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2003BA96      Nucl.Phys. A721, 1028c (2003)

S.Banerjee, A.Bhattacharyya, S.K.Ghosh, S.Raha, B.Sinha, H.Toki

Some aspects of strangeness in astrophysics and cosmology

doi: 10.1016/S0375-9474(03)01277-6
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2003PU04      Nucl.Phys. A723, 145 (2003)

S.J.Puglia, A.Bhattacharyya, R.J.Furnstahl

Density functional theory for a confined Fermi system with short-range interaction

doi: 10.1016/S0375-9474(03)01161-8
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2002DE33      J.Phys.(London) G28, 2179 (2002)

P.Dey, A.Bhattacharyya, D.Bandyopadhyay

Bose-Einstein Condensation in Dense Nuclear Matter and Strong Magnetic Fields

doi: 10.1088/0954-3899/28/8/304
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1999BH01      Phys.Rev. C60, 018202 (1999)

A.Bhattacharyya, S.K.Ghosh, S.Raha

ρ-Mass Modification in 3He: Signal of restoration of chiral symmetry or test for nuclear matter models ?

doi: 10.1103/PhysRevC.60.018202
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1999BH02      Phys.Rev. C60, 044903 (1999)

A.Bhattacharyya, S.K.Ghosh, S.C.Phatak

Effect of In-Medium Meson Masses on Nuclear Matter Properties

doi: 10.1103/PhysRevC.60.044903
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1999BH07      Nucl.Phys. A661, 629c (1999)

A.Bhattacharyya, J.-e.Alam, S.Sarkar, P.Roy, B.Sinha, S.Raha, P.Bhattacharjee

Cosmological QCD Phase Transition and Dark Matter

doi: 10.1016/S0375-9474(99)85104-5
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1998BH06      Int.J.Mod.Phys. E7, 495 (1998)

A.Bhattacharyya, S.K.Ghosh

Model Study of Hot and Dense Baryonic Matter

doi: 10.1142/S0218301398000269
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1997BH01      Phys.Rev. C55, 1463 (1997)

A.Bhattacharyya, S.K.Ghosh, S.C.Phatak, S.Raha

In-Medium Effects on the φ Meson

doi: 10.1103/PhysRevC.55.1463
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1997BH03      Phys.Lett. 401B, 213 (1997)

A.Bhattacharyya, S.K.Ghosh, S.C.Phatak, S.Raha

Kaon Mass in Dense Matter

doi: 10.1016/S0370-2693(97)00311-0
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1996BH01      Phys.Rev. C53, 522 (1996)

A.Bhattacharyya, S.Raha

Hadron Masses at Finite Density from the Zimanyi-Moskowski Model

doi: 10.1103/PhysRevC.53.522
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1996BH05      Int.J.Mod.Phys. E5, 511 (1996)

A.Bhattacharyya

σ and ω, with Δ-Baryon, at High Temperature

doi: 10.1142/S0218301396000256
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