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NSR database version of May 24, 2024.

Search: Author = C.Lahiri

Found 12 matches.

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2023GU13      Phys.Rev. C 108, 015805 (2023)

A.Gupta, C.Lahiri, S.Sarkar

Allowed β- decay of bare atoms with A ≈ 60 - 80 in stellar environments

RADIOACTIVITY 59Fe, 60,61Co, 63,65,66Ni, 64,66,67Cu, 69,72Zn, 70Ga, 75,78Ge, 81Se(β-); calculated decay rates, bound state decay rate, continuum state decay rate, logft, T1/2, T1/2 of bare atoms as functions of density and temperature in stellar S-process environment, ratio of neutral to bare atom half-life, branchings. 59Fe, 69Zn(β-); calculated Gamow-Teller transition matrix elements, quenching factors. Shell model calculations. Comparison to available experimental data.

NUCLEAR STRUCTURE 59Fe, 59Co, 69Zn, 69Ga, 78Ge, 78As; calculated levels, J, π. Shell-model calculations with fpd6, fpd6n and jun45 interactions. Comparison to experimental data.

doi: 10.1103/PhysRevC.108.015805
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2019GU33      Phys.Rev. C 100, 064313 (2019)

A.Gupta, C.Lahiri, S.Sarkar

Bound and continuum state β- decay of bare atoms: Enhancement of decay rate and changes in β- decay branching

RADIOACTIVITY 63,66Ni, 85,85mKr, 93Zr, 95,95mNb, 99Tc, 106Ru, 107Pd, 110Ag, 113,115Cd, 121,121m,123,123mSn, 124Sb, 134,136Cs, 148,148mPm, 151Sm, 152,152m,155Eu, 171Tm, 191Os, 207Tl, 210Pb, 227Ac, 228Ra, 241Pu(β-); calculated β-decay half-lives for the fully-ionized (bare) ions, logft, individual contributions to β--decay rates for bound and continuum states in neutral atoms and fully-ionized (bare) ions; deduced that transition branchings for the bare atom differ from that of the neutral atom for all Z and A in A=60-240 mass region. Comparison with experimental values of half-lives for neutral atoms in the NNDC databases, and with theoretical values from 1987Ta16.

doi: 10.1103/PhysRevC.100.064313
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2016KU04      Int.J.Mod.Phys. E25, 1650020 (2016)

B.Kumar, S.K.Biswal, S.K.Singh, C.Lahiri, S.K.Patra

Modes of decay in neutron-rich nuclei

NUCLEAR STRUCTURE 208Pb, 232,234,236,238,240,254,256,258Th, 230,232,234,236,248,250,252,254,256U; calculated matter density distributions.

RADIOACTIVITY 216,232,254Th, 218,238,256U(α); calculated penetrability parameter using WKB approximation, T1/2. Comparison with available data.

doi: 10.1142/S0218301316500208
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2016LA05      Int.J.Mod.Phys. E25, 1650015 (2016)

C.Lahiri, S.K.Biswal, S.K.Patra

Effects of NN potentials on p Nuclides in the A ∼ 100-120 region

NUCLEAR STRUCTURE A = 100-120; calculated S-factors, astrophysical reaction rates using microscopical optical model potential with the Hauser-Feshbach reaction code TALYS. Comparison with experimental data.

doi: 10.1142/S0218301316500154
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2016MA54      Int.J.Mod.Phys. E25, 1650062 (2016)

S.Mahapatro, C.Lahiri, B.Kumar, R.N.Mishra, S.K.Patra

Nuclear structure and decay properties of even-even nuclei in Z=70-80 drip-line region

NUCLEAR STRUCTURE 150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240Yb, 152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242Hf, 154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244W, 156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246Os, 158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248Pt, 160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248,250Hg; calculated binding energy, neutron, proton, charge rms radii, quadrupole moment and hexadecoupole deformation parameters. Comparison with FRDM calculations, experimental data.

doi: 10.1142/S0218301316500622
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2012LA11      Int.J.Mod.Phys. E21, 1250042 (2012)

C.Lahiri, G.Gangopadhyay

Neutron rich nuclei in a new binding energy formula and the astrophysical r-process

doi: 10.1142/S0218301312500425
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2012LA17      Int.J.Mod.Phys. E21, 1250074 (2012)

C.Lahiri, G.Gangopadhyay

Endpoint of rp process using relativistic mean field approach and a new mass formula

doi: 10.1142/S0218301312500747
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2012LA25      Phys.Rev. C 86, 047601 (2012)

C.Lahiri, G.Gangopadhyay

Low-energy proton reactions of astrophysical interest in the A∼90-100 region

NUCLEAR STRUCTURE 89Y, 90,92,94,96Zr, 92,94,95,96,98Mo, 96,98Ru; calculated charge radii. Comparison with evaluated experimental values. Relativistic mean field calculation.

NUCLEAR REACTIONS 90,91,92Zr, 92,94,96,98Mo(p, p), E=9.7, 14.8, 14.25 MeV; calculated elastic scattering cross section, σ(θ, E). 89Y, 96Zr, 96,98,99Ru, 92,94,95,98Mo(p, γ), 93Nb(p, n), E(cm)=1-5 MeV; calculated astrophysical S factors. Density-dependent M3Y interaction with relativistic mean field densities. Comparison with experimental data.

doi: 10.1103/PhysRevC.86.047601
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2011BH01      J.Phys.(London) G38, 035105 (2011)

S.Bhowal, C.Lahiri, R.Raut, P.Singh, M.K.Raju, A.Goswami, A.K.Singh, S.Bhattacharya, T.Bhattacharjee, G.Mukherjee, S.Bhattacharyya, S.Muralithar, R.K.Bhowmik, N.Madhavan, R.P.Singh, G.Gangopadhyay

Energy levels in 141Nd from fusion evaporation study

NUCLEAR REACTIONS 130Te(16O, 5n)141Nd, E=80-85 MeV; 124Sn(24Mg, 3nα)141Nd, E=107 MeV; measured Eγ, Iγ; deduced level scheme, J, π, quadrupole band-like structure. Comparison with shell model calculations.

doi: 10.1088/0954-3899/38/3/035105
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2011LA14      Eur.Phys.J. A 47, 87 (2011)

C.Lahiri, G.Gangopadhyay

Microscopic calculation of proton capture reactions in the mass 60-80 region and its astrophysical implications

NUCLEAR REACTIONS 62,64Ni, 63,65Cu, 70Ge, 74,76,77Se, 64,66,67,68Zn(p, γ), E(cm)=1.0-3.5 MeV; calculated S-factor using TALYS with HF+BCS and HFB. Comparison with data.

NUCLEAR STRUCTURE 64Ge, 68Se, 76Sr, 72Kr; calculated effective T1/2 for temperatures 0.8-1.8 GK, densities above which the waiting points are bridged. TALYS with HF+BCS and HFB.

doi: 10.1140/epja/i2011-11087-2
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2011LA17      Phys.Rev. C 84, 057601 (2011)

C.Lahiri, G.Gangopadhyay

Relativistic mean field in A ≈ 80 nuclei and low-energy proton reactions

NUCLEAR STRUCTURE 84,86,87,88Sr, 75As, 76Ge, 85Rb; calculated binding energies and charge radii. 76Ge, 88Sr; calculated charge and compared with analyzed radii from electron scattering data. Relativistic mean-field (RMF+BCS) calculations.

NUCLEAR REACTIONS 84,86,87,88Sr(p, γ), 75As, 76Ge, 85Rb(p, n), E=1.5-4 MeV; calculated s factors using TALYS code and compared with experimental data. Microscopic nuclear interaction DDM3Y.

doi: 10.1103/PhysRevC.84.057601
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2011LA18      Int.J.Mod.Phys. E20, 2417 (2011)

C.Lahiri, G.Gangopadhyay

Proton dripline in a new formula for nuclear binding energy

NUCLEAR STRUCTURE N=18-123; calculated proton dripline; deduced formula. Comparison with experimental data.

doi: 10.1142/S0218301311020411
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