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NSR database version of April 27, 2024.

Search: Author = Sangeeta

Found 11 matches.

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2024GH03      J.Phys.(London) G51, 045105 (2024)

T.Ghosh, Sangeeta, B.Maheshwari, G.Saxena, B.K.Agrawal

Indispensability of cross-shell contributions in neutron resonance spacing

NUCLEAR STRUCTURE ²⁴Na, ^25,26,27Mg; calculated J and π dependent nuclear level densities (NLDs) for a configuration interaction shell model using a numerically efficient spectral distribution method; deduced the s-wave neutron resonance spacing (D0).

doi: 10.1088/1361-6471/ad29e9
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2024HI02      Chin.Phys.C 48, 024001 (2024)

A.Hingu, S.Mukherjee, S.Parashari, A.Sangeeta, A.Gandhi, M.Upadhyay, M.Choudhary, S.Bamal, N.Singh, G.Mishra, S.De, S.Sood, S.Prasad, G.Saxena, A.Kumar, R.G.Thomas, B.K.Agrawal, K.Katovsky, A.Kumar

Investigation of ⁵⁸Ni(n, p)⁵⁸Co reaction cross-section with covariance analysis

NUCLEAR REACTIONS ⁵⁸Ni(n, p), ¹¹⁵In(n, n'), E=1.7-2.7 MeV; measured reaction products, Eγ, Iγ; deduced σ and correlation matrix. Comparison with EXFOR, ENDF/B-VIII.0, JEFF-3.3, JENDL-4.0, and CENDL-3.2 libraries, TALYS calculations. The Folded Tendem Ion Accelerator (FOTIA) facility at the Bhabha Atomic Research Centre (BARC), Mumbai, India.

doi: 10.1088/1674-1137/ad0e5a
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2023GH04      Eur.Phys.J. A 59, 266 (2023)

T.Ghosh, Sangeeta, G.Saxena, B.K.Agrawal, U.Datta

Impact of density dependence of symmetry energy on astrophysical S-factor for heavy-ion fusion reactions

NUCLEAR STRUCTURE ^16,24O, ^40,48,54,60Ca, ⁷⁸Ni, ^124,132Sn; analyzed available data; deduced Radial density distributions for neutrons and protons from SLy4 and SkO Skyrme effective interactions.

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, X), ¹⁶O(¹⁶O, X), ²⁴O(²⁴O, X), ⁵⁴Ca(⁵⁴Ca, X), ⁶⁰Ca(⁶⁰Ca, X), ⁷⁸Ni(⁷⁸Ni, X), ¹²⁴Sn(¹²⁴Sn, X), ¹³²Sn(¹³²Sn, X), E(cm)=45-50 MeV; analyzed available data; deduced σ, the maximum barrier height and width obtained by DFM potentials M3Y-Paris without density dependence (PDD0), sub-barrier fusion σ and astrophysical S-factor. Comparison with available data.

doi: 10.1140/epja/s10050-023-01173-7
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2022GH01      J.Phys.(London) G49, 25103 (2022)

T.Ghosh, B.Maheshwari, Sangeeta, G.Saxena, B.K.Agrawal

Nuclear level densities away from line of β-stability

NUCLEAR STRUCTURE Z=10-80; analyzed available data; deduced nuclear level densities, ground-shell corrections, parameters.

doi: 10.1088/1361-6471/ac44ac
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2022SA17      Phys.Rev. C 105, 044320 (2022)

Sangeeta, T.Ghosh, B.Maheshwari, G.Saxena, B.K.Agrawal

Astrophysical reaction rates with realistic nuclear level densities

NUCLEAR STRUCTURE ⁵¹V, ⁵⁵Fe, ⁵⁹Ni; calculated ground-state energies, nuclear level densities. ^49,50Ti, ⁵¹V, ⁵³Cr, ^55,57Fe, ⁵⁹Ni; calculated S-wave neutron resonances. Ground state properties calculated by using shell-model with the GXPF1A residual interaction. Nuclear level densities obtained within the spectral distribution method (SDM). Comparison to available experimental data and other theoretical calculations.

NUCLEAR REACTIONS ⁵⁰V, ⁵⁴Fe, ⁵⁸Ni(n, γ), E(cm)<8 MeV; calculated σ(E), astrophysical reaction rates. TALYS 1.95 calculations using nuclear level densities obtained within the spectral distribution method (SDM). Comparison to experimental data and recommended values from ENDF and KADONIS V0.3.

doi: 10.1103/PhysRevC.105.044320
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2020MO33      Phys.Rev. C 102, 044610 (2020)

G.Mohanto, S.De, A.Parihari, P.C.Rout, K.Ramachandran, K.Mahata, E.T.Mirgule, R.Gandhi, Sangeeta, M.Kushwaha, B.Srinivasan, S.Santra, A.Shrivastava, S.P.Behera, B.J.Roy, A.Jhingan, B.K.Nayak, A.Saxena

Effect of nuclear structure and fissility on quasifission

NUCLEAR REACTIONS ^206,208Pb(³⁵Cl, X), (³⁷Cl, X), E(cm)/V_B=0.95-1.05; measured fission fragments and time-of-flight of fragments using two position sensitive multiwire proportional counters (MWPCs); deduced fission fragment velocities, mass ratio and center-of-mass angle, mass-angle distributions (MAD spectra), absence of mass-angle correlations and that of fast quasifission (QF); analyzed mass widths of the mass distributions as function of excitation energy for the reactions studied in this work, and compared with previous experimental results for ²⁰⁸Pb(³⁴S, X) and ²⁰⁸Pb(³⁰Si, X) reactions. ²⁰⁸Pb, ²³⁸U(¹²C, X), E not given; ¹⁸²W(¹³C, X), E not given; ¹⁷⁵Lu, ¹⁸⁶W, ^186,192Os, ¹⁹⁶Pt, ²⁰⁰Hg, ²⁰⁸Pb, ²³⁸U(¹⁶O, X), E not given; ²³²Th(¹⁸O, X), E not given; ¹⁷⁸Hf, ²³⁸U(²⁴Mg, X), E not given; ¹⁷⁰Yb, ²³⁸U(²⁸Si, X), E not given; ²⁰⁸Pb, ²³²Th(³⁰Si, X), E not given; ¹⁷⁸Hf, ¹⁹⁴Pt, ²⁰²Hg, ²⁰⁸Pb(³⁴S, X), E not given; ¹⁶⁸Er, ¹⁸⁶W, ²⁰⁸Pb, ²³²Th(³⁴S, X), E not given; ¹⁵⁴Sm, ^206,208Pb(³⁵Cl, X), (³⁷Cl, X), E not given; ¹⁴⁴Sm(³⁵Cl, X), E not given; ¹⁴²Nd, ¹⁵⁴Sm, ¹⁹⁸Pt, ²⁰⁸Pb, ²³²Th, ²³⁸U(⁴⁰Ca, X), E not given; ¹⁴⁴Sm, ¹⁶²Dy, ¹⁷⁰Er, ¹⁷⁴Yb, ¹⁷⁸Hf, ¹⁸⁶W, ¹⁹²Os, ¹⁹⁶Pt, ²⁰⁰Hg, ²⁰⁸Pb, ²³⁸U(⁴⁸Ti, X), E not given; ^144,154Sm(⁴⁸Ca, X), E not given; ¹⁵⁴Sm, ¹⁷⁰Er, ¹⁸⁴W, ¹⁹²Os, ¹⁹⁸Pt, ²⁰⁸Pb(⁶⁴Ni, X), E not given; analyzed measured cross sections and mass-angle distributions (MADs) by including deformation parameter β₂; deduced effect on quasifission (QF) process.

doi: 10.1103/PhysRevC.102.044610
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2019MO25      Phys.Rev. C 100, 011602 (2019)

G.Mohanto, A.Parihari, P.C.Rout, S.De, E.T.Mirgule, B.Srinivasan, K.Mahata, S.P.Behera, M.Kushwaha, D.Sarkar, B.K.Nayak, A.Saxena, A.K.R.Kumar, A.Gandhi, Sangeeta, N.K.Deb, P.Arumugam

Collective enhancement in nuclear level density

NUCLEAR REACTIONS ¹⁸¹Ta, ¹⁹⁷Au(¹¹B, X)¹⁹²Pt^*/²⁰⁸Pb^*, E=61.5, 63.0 MeV; measured Eα, Iα, neutron time of flight, E(n), I(n), and αn-coin from the compound nuclei using ΔE-E telescopes for charged particle detection and liquid scintillator array for neutron detection at the BARC-TIFR LINAC-Pelletron facility. ¹⁸⁸Os, ²⁰⁴Pb; deduced inverse level density parameters as a function of excitation energy, and energy-dependent collective enhancement factor obtained from simultaneous fitting of the neutron spectra. ¹⁶⁹Tm, ¹⁸¹Ta(α, X), E=26-40 MeV; analyzed previous experimental yields with model calculations. ¹⁸⁷Os, ²⁰³Pb; calculated temperature dependent free energy surfaces. Comparison with statistical model calculations.

doi: 10.1103/PhysRevC.100.011602
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2017SA11      Acta Phys.Pol. B48, 623 (2017)

Sangeeta, V.Kaur

Structural Effects Through Nuclear Charge Radius in Mass Asymmetric Collisions

NUCLEAR REACTIONS ⁵⁰Ca(⁵⁰Ca, x), E=100 MeV/nucleon;⁸⁶Kr(¹⁴N, x), E=100 MeV/nucleon; calculated free proton, neutron multiplicity vs relative impact parameter, light-mass fragment multiplicity vs different nuclear charge radius parameter using IQMD (Isospin-dependent QMD).

doi: 10.5506/APhysPolB.48.623
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2017SA43      Nucl.Phys. A966, 20 (2017)

Sangeeta, V.Kaur

Structural and isospin effects on balance energy and transition energy via different nuclear charge radii parameterizations

NUCLEAR STRUCTURE ⁸⁰Cu, ⁸⁰Zr; calculated neutron, proton density profile, mass and charge radius using IQMD (Isospin-dependent QMD)

NUCLEAR REACTIONS ⁵⁰Ca(⁵⁰Ca, x), E=30-200 MeV/nucleon;¹⁹⁷Au(¹⁹⁷Au, x), E=30-200 MeV/nucleon;⁸⁰Cu(⁸⁰Cu, x), E=40-350 MeV/nucleon;⁸⁰Zr(⁸⁰Zr, x), E=40-350 MeV/nucleon; calculated reduced flow, elliptical flow of Z=1 particles.

COMPILATION ⁸⁰Cu(⁸⁰Cu, x), ⁵⁰Ca(⁵⁰Ca, x), ⁸⁰Zn(⁸⁰Zn, x), ⁸⁰Ge(⁸⁰Ge, x), ⁸⁰Kr(⁸⁰Kr, x), ⁹⁰Kr(⁹⁰Kr, x), ⁸⁰Zr(⁸⁰Zr, x), ¹²⁴Sn(¹²⁴Sn, x), ¹⁵⁰Nd(¹⁵⁰Nd, x), ¹⁹⁷Au(¹⁹⁷Au, x), E not given; compiled balance energy for Z=1 particles, transition energy vs nuclear radius (separately for nuclei of N/Z=1.5 and for A_tot=160); deduced simple power trend of dependence of energies vs radius.

doi: 10.1016/j.nuclphysa.2017.05.096
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2016SA09      Acta Phys.Pol. B47, 991 (2016)

Sangeeta

Initialization Effects via Nuclear Charge Radii Parameterizations on the Nuclear Stopping and Its Relation to Distribution and Production of Light Mass Fragments

NUCLEAR REACTIONS ⁵⁰Ca(⁵⁰Ca, X), ⁹⁰Kr(⁹⁰Kr, X), ¹⁰⁰Zr(¹⁰⁰Zr, X), ¹²⁴Sn(¹²⁴Sn, X), ¹⁵⁰Nd(¹⁵⁰Nd, X), ¹⁹⁷Au(¹⁹⁷Au, X), E=50 MeV/nucleon; calculated rapidity distribution, nuclear stopping observables using IQMD model with isospin-dependent N-N σ.

doi: 10.5506/APhysPolB.47.991
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2014SA34      Nucl.Phys. A927, 220 (2014)

Sangeeta, A.Jain, S.Kumar

Influence of isospin dependent nuclear charge radii on fragmentation in heavy ion collisions

NUCLEAR REACTIONS ⁵⁰Ca(⁵⁰Ca, x), E=50, 400 MeV/nucleon;¹²⁴Sn(¹²⁴Sn, x), E=50, 400 MeV/nucleon; ¹⁹⁷Au(¹⁹⁷Au, x), E=50, 400 MeV/nucleon; calculated nucleonic density time development using different parameterization of nuclear radii, fragment multiplicity, fragment mass distribution using IQMD (isospin-dependent QMD). Calculated also other reactions, their results not presented.

doi: 10.1016/j.nuclphysa.2014.04.032
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Note: The following list of authors and aliases matches the search parameter Sangeeta: ,