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NSR database version of April 11, 2024.

Search: Author = V.Kumar

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2024KU04      Phys.Rev. C 109, 014613 (2024)

V.Kumar, K.Mahata, S.Dhuri, A.Shrivastava, K.Ramachandran, S.Pandit, V.V.Parkar, A.Chavan, A.Kumar, S.Kaur, P.C.Rout

Observation of asymmetric fission in 204Pb at low excitation energies

doi: 10.1103/PhysRevC.109.014613
Citations: PlumX Metrics


2023JA07      Universe 9, 362 (2023)

P.Jain, Y.Kumar, V.Kumar, P.Bangotra

Search for Super-Deformed Identical Bands in the A = 190 Mass Region on the Basis of Level Spin

NUCLEAR STRUCTURE A=190; analyzed available data; deduced Super-Deformed (SD) bands using the modified Variable Moment of Inertia (VMI) model.

doi: 10.3390/universe9080362
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2023KU05      Acta Phys.Pol. B54, 1-A1 (2023)

V.Kumar, A.Shukla, M.K.Sharma, P.K.Rath

Characteristics of Chiral Bandhead

NUCLEAR STRUCTURE 80Br, 100Tc, 104Rh, 128Cs, 132La, 134Pr, 136,138Pm; analyzed available data; deduced the low value of reduced hindrance factors could be indicative of triaxial shape and orthogonally coupling of the valence nucleon angular momentum at the chiral bandhead.

doi: 10.5506/aphyspolb.54.1-a1
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2023KU20      Acta Phys.Pol. B54, 9-A3 (2023)

V.Kumar, A.Shukla, M.K.Sharma, P.K.Rath

Comparison of Valence-correlation Schemes in Nuclei Having Valence Nucleons in the Same Shell

NUCLEAR STRUCTURE A=6-136; analyzed available data; deduced variation of excitation energies of yrast 2+ states and ratios E4+/E2+ with NpNn.

doi: 10.5506/APhysPolB.54.9-A3
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2023KU21      Phys.Rev. C 108, 044313 (2023)

V.Kumar, R.Chapman, D.O'Donnell, J.Ollier, R.Orlandi, J.F.Smith, K.-M.Spohr, D.A.Torres, P.Wady, S.K.Tandel, S.J.Freeman, G.de Angelis, N.Marginean, D.R.Napoli, J.J.Valiente-Dobon, S.Aydin, E.Farnea, R.Marginean, D.Mengoni, T.Kroll, N.Thompson

Evolution of nuclear structure in the neutron-rich 96, 97, 99Nb isotopes: Evidence for shape coexistence in N = 58 99Nb

doi: 10.1103/PhysRevC.108.044313
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2023KU26      Eur.Phys.J. A 59, 237 (2023)

V.Kumar, P.C.Srivastava

Shell-model study of β+/EC-decay half-lives for Z = 21-30 nuclei

RADIOACTIVITY 41,42,43Sc, 42,43Ti, 45Ti, 44,45,46,47V, 45,47Cr, 48,49,50,51Mn, 48,49,50,51Fe, 53Fe, 50Co, 52,53Co, 55Co, 57,58Co, 54Ni, 56,57Ni, 57,58,59,60,61,62,63,64Cu, 58,59,60,61,62,63Zn, 65Zn(EC), (β+); calculated excitation energies, log ft values, and branching ratios, phase space factors. Comparison with available data.

doi: 10.1140/epja/s10050-023-01142-0
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2023SI05      Acta Phys.Pol. B54, 1-A4 (2023)

Y.P.Singh, V.Kumar, A.Choudhary, A.Shukla, M.K.Sharma, P.K.Rath, Rohtash, P.Jain, Y.Kumar, R.Sapra, K.Jha, M.Silarski, S.Sharma

Influence of Collectivity on Reduced Hindrance Factor of K-isomers in Tantalum and Hafnium Isotopes

NUCLEAR STRUCTURE 170,172,174,176,178,180,182,184Hf, 173,175,177,179,181,183,185Ta; analyzed available data; deduced correlations of the reduced hindrance factor of the K-isomers in Ta and Hf isotopes with respect to NpNn.

doi: 10.5506/aphyspolb.54.1-a1
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2023SI21      Phys.Part. and Nucl.Lett. 20, 577 (2023)

Y.P.Singh, V.Kumar, A.Shukla, P.Jain, Y.Kumar, R.Sapra, K.Jha, T.Verma, M.Silarski, S.Sharma

Systematic Study of Gamma Decay Hindrance Factors

NUCLEAR STRUCTURE A=20-250; analyzed available data; deduced Weisskopf hindrance factor FW for electric and magnetic multipole transitions.

doi: 10.1134/S1547477123040635
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2022DH03      Phys.Rev. C 106, 014616 (2022)

S.Dhuri, K.Mahata, A.Shrivastava, K.Ramachandran, S.K.Pandit, V.Kumar, V.V.Parkar, P.C.Rout, A.Kumar, A.Chavan, S.Kaur, T.Santhosh

Measurement of mass and total kinetic energy distributions for the 12C + 174Lu system

NUCLEAR REACTIONS 175Lu(12C, F), E=58, 65, 70, 75 MeV; measured reaction products; deduced fission fragment mass and total kinetic energy (TKE) distributions. Comparison to the systematics based on liquid drop (LD) behavior. Two position-sensitive multiwire proportional chambers (MWPCs) at BARC-TIFR Pelletron-LINAC facility, Mumbai.

doi: 10.1103/PhysRevC.106.014616
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2022KU01      Nucl.Phys. A1017, 122344 (2022)

V.Kumar, A.Kumar, P.C.Srivastava

Shell-model study for GT-strengths corresponding to β decay of 60Ge and 62Ge

RADIOACTIVITY 60,62Ge(EC); calculated GT transitions, T1/2, energy levels, J, π using KB3G and GXPF1A, JUN45 and jj44b effective interactions. Comparison with available data.

doi: 10.1016/j.nuclphysa.2021.122344
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2022KU16      Nucl.Phys. A1022, 122429 (2022)

V.Kumar, P.Kumar, V.Thakur, S.Thakur, S.K.Dhiman

The microscopic studies of the even-even 12-28O, 34-60Ca, 48-80Ni, and 100-134Sn using covariant density functional theory

NUCLEAR STRUCTURE 12,14,16,18,20,22,24,26,28O, 34,36,38,40,42,44,46,48,50,52,54,56,58,60Ca, 48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80Ni, 100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134Sn; calculated potential energy surfaces, binding and two-neutron separation energies, charge radii, neutron and proton rms radii, neutron skin thickness; deduced covariant mass data and Skyrme mass data for D1S, NL-SH, NL3, DD-ME2, DD-MEδ, DD-PC1, NL3*, SkM*, SkP, SLy4, SV-min, UNEDF0, and UNEDF1 parameterizations.

doi: 10.1016/j.nuclphysa.2022.122429
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2022KU23      Phys.Scr. 97, 055301 (2022)

V.Kumar, S.B.Bhardwaj, R.Mehar Singh, F.Chand

Energy eigenvalue spectra and applications of the sextic and the Coulomb perturbed potentials

NUCLEAR STRUCTURE 96Zr, 112Sn; calculated closed-form solutions to the N-dimensional Schrodinger equation, for the Coulomb perturbed and the sextic potentials using the Nikiforov-Uvarov functional analysis and power series methods, respectively.

doi: 10.1088/1402-4896/ac5f28
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2022KU30      Eur.Phys.J. A 58, 143 (2022)

P.Kumar, V.Thakur, S.Thakur, V.Kumar, A.Sharma, R.Kumar, S.K.Dhiman

Effect of nuclear deformation on proton bubble structure in Z=14 isotopes

NUCLEAR STRUCTURE 28,30,32,34,36,38,40,42Si; calculated potential energy surfaces (PESs), charge density distributions, proton depletion fractions, proton and neutron density distributions, proton density profile, occupation probabilities for spherically and triaxially constrained single-particle orbits by employing Covariant Density Functional Theory with DD-ME2 interaction; deduced the effect of deformation proton bubble candidates in Si isotopic chain.

doi: 10.1140/epja/s10050-022-00801-y
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2022MA17      Phys.Rev. C 105, 034328 (2022)

K.Mandal, A.Chakraborty, A.K.Mondal, U.S.Ghosh, A.Dey, S.Biswas, B.Mukherjee, S.Rai, S.Chatterjee, S.K.Das, S.Samanta, R.Raut, S.S.Ghugre, S.Bhattacharyya, S.Nandi, S.Bhattacharya, G.Mukherjee, S.Ali, A.Goswami, S.Mukhopadhyay, Krishichayan, R.Banik, R.Chakrabarti, V.Kumar, A.Kumar

Alignment effects in the medium-spin level structure of 78Se

NUCLEAR REACTIONS 76Ge(α, 2n), E=30 MeV; measured Eγ, Iγ, γγ(θ), gγ∓coin. 78Se; deduced levels J, π, DCO, polarization asymmetry, multipolarity, rotational band structures, configurations, alignments, high-spin states; calculated total Routhian surface (TRS) contours in (β2, γ) plane. Pointed the evidences of triaxial shapes persistence in the higher spin regime. Systematics of crossing frequencies for Se isotopes. Indian National Gamma Array (INGA) together with one low-energy photon spectrometer (LEPS) at K-130 cyclotron of Variable Energy Cyclotron Centre, Kolkata (VECC).

doi: 10.1103/PhysRevC.105.034328
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2022SI27      Acta Phys.Pol. B53, 10-A3 (2022)

A.Singh, A.Shukla, V.Kumar, M.K.Gaidarov

Study of Two-proton Emission Half-lives Using Relativistic Mean-field Model

RADIOACTIVITY 45Fe, 48Ni, 54Zn, 65,67Kr, 58,59Ge, 63Se, 70Sr, 74,75Zr(2p); calculated T1/2 using the relativistic mean-field (RMF) approach with the force parameter NL3*. Comparison with available data.

doi: 10.5506/APhysPolB.53.10-A3
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2022TH05      Phys.Rev. C 106, 025803 (2022)

V.Thakur, R.Kumar, P.Kumar, V.Kumar, B.K.Agrawal, S.K.Dhiman

Relativistic mean field model parametrizations in the light of GW170817, GW190814, and PSR J0740+6620

NUCLEAR STRUCTURE 16O, 40,48Ca, 56Ni, 88Sr, 90Zr, 116,132Sn, 208Pb; calculated binding energy per nucleon, charge root mean square radii. Relativistic mean field (RMF) model with three new parametrizations DOPS1, DOPS2, and DOPS3 (named after the Department of Physics Shimla).

doi: 10.1103/PhysRevC.106.025803
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2022TH07      Phys.Rev. C 106, 045806 (2022)

V.Thakur, R.Kumar, P.Kumar, V.Kumar, M.Kumar, C.Mondal, B.K.Agrawal, S.K.Dhiman

Effects of an isovector scalar meson on the equation of state of dense matter within a relativistic mean field model

NUCLEAR STRUCTURE 16,24O, 40,48Ca, 56,78Ni, 88Sr, 90Zr , 100,116,132Sn, 208Pb; analyzed experimental values of binding energy, charge radii, neutron skin thickness; deduced mass-radius relation of a neutron star, variation of dimensionless tidal deformability with respect to gravitational mass. Calculations within relativistic mean field (RMF) framework withadded freedom in the isospin channel through the δ meson.

doi: 10.1103/PhysRevC.106.045806
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2021KU06      Eur.Phys.J. A 57, 36 (2021)

P.Kumar, V.Thakur, S.Thakur, V.Kumar, S.K.Dhiman

Nuclear shape evolution and shape coexistence in Zr and Mo isotopes

NUCLEAR STRUCTURE 88,90,92,94,96,98,100,102,104,106,108,110,112,114Zr, 98,100,102,104,106,108,110,112,114,116Mo; calculated potential energy surfaces, binding energies, two-neutron separation energies, nuclear charge radii, neutron single-particle energy levels and proton occupation probabilities. Comparison with available data.

doi: 10.1140/epja/s10050-021-00346-6
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2021KU09      Phys.Scr. 96, 025301 (2021)

V.Kumar, P.Kumar, V.Thakur, S.Thakur, S.K.Dhiman

Microscopic study of shape evolution and ground-state properties of Iodine isotopes

NUCLEAR STRUCTURE 108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144I; calculated ground-state properties are the nuclear electric quadrupole moment, single-particle energy levels, the binding energy per nucleon, pairing energy, one-neutron separation energy, two-neutron separation energy, nuclear charge radius, neutron rms radius, proton rms radius, and neutron skin thickness using Hartree-Fock-Bogoliubov Model while employing the axially deformed single-particle harmonic oscillator basis for the expansion of quasiparticle wave functions.

doi: 10.1088/1402-4896/abcf66
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2021KU13      Acta Phys.Pol. B52, 401 (2021)

P.Kumar, V.Thakur, S.Thakur, V.Kumar, S.K.Dhiman

Evolution of Nuclear Shapes in Light Nuclei from Proton- to Neutron-rich Side

NUCLEAR STRUCTURE 20,22,24,26,28,30,32,34,36,38,40,42Mg, 22,24,26,28,30,32,34,36,38,40,42,44Si, 26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56S, 28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58Ar; calculated binding energies, quadrupole deformation parameter, charge radii, and isotope shifts using the relativistic Hartree-Bogoliubov (RHB) model with density-dependent meson-exchange interaction and separable pairing. Comparison with available data.

doi: 10.5506/aphyspolb.52.401
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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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2021KU17      Int.J.Mod.Phys. E30, 2150049 (2021)

V.Kumar, P.Kumar, V.Thakur, S.Thakur, S.K.Dhiman

Microscopic study of shape evolution and some important ground state properties of 190-210Au isotopes

NUCLEAR STRUCTURE 190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210Au; calculated shape evolution, quadrupole deformation parameter, nuclear electric quadrupole moment, single-particle energy levels, the binding energy per nucleon, nuclear charge radius, neutron rms radius, proton rms radius and neutron skin thickness within the framework of the Hartree-Fock-Bogoliubov Model.

doi: 10.1142/S021830132150049X
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2021TH08      Nucl.Phys. A1014, 122254 (2021)

S.Thakur, P.Kumar, V.Thakur, V.Kumar, S.K.Dhiman

Shape transitions and shell structure study in zirconium, molybdenum and ruthenium

NUCLEAR STRUCTURE 78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126Zr, 82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Mo, 90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Ru; calculated potential energy curves, shell closure parameters, two neutron separation energies, root mean square radii, neutron skin thickness using density dependent meson exchange model DD-ME2 and density dependent point coupling models DD-PC1 and DD-PCX.

doi: 10.1016/j.nuclphysa.2021.122254
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2021TH12      Acta Phys.Pol. B52, 1433 (2021)

S.Thakur, P.Kumar, V.Thakur, V.Kumar, S.K.Dhiman

Nuclear Shape Evolution in Palladium Isotopes

NUCLEAR STRUCTURE 86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134Pd; calculated potential energy curves, binding energies, quadrupole deformation parameters, charge radii, two-neutron separation energies by employing density-dependent point-coupling parameter sets DD-PC1 and DD-PCX with separable pairing interaction; deduced prolate-oblate shape coexistence in 108Pd.

doi: 10.5506/APhysPolB.52.1433
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2020KU12      Acta Phys.Pol. B51, 961 (2020)

V.Kumar, P.C.Srivastava, A.Kumar

Gamow-Teller Transition Strengths for Selected fp Shell Nuclei

NUCLEAR STRUCTURE 44Sc, 45,48Ti, 66Co, 66Fe; calculated Gamow–Teller transition strengths. Comparison with experimental data.

doi: 10.5506/APhysPolB.51.961
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2020KU20      Nucl.Phys. A1002, 121989 (2020)

V.Kumar, P.C.Srivastava

Shell model study of high-spin states and band terminations in 67As

NUCLEAR STRUCTURE 67As; calculated energy levels, J, π; deduced high-spin states and band terminations.

doi: 10.1016/j.nuclphysa.2020.121989
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2020MO41      Phys.Rev. C 102, 064311 (2020)

A.K.Mondal, A.Chakraborty, K.Mandal, U.S.Ghosh, An.Dey, S.Biswas, B.Mukherjee, S.Rai, Krishichayan, S.Chatterjee, S.K.Das, S.Samanta, R.Raut, S.S.Ghugre, S.Rajbanshi, R.Banik, S.Bhattacharyya, S.Nandi, S.Bhattacharya, G.Mukherjee, S.Ali, A.Goswami, R.Chakrabarti, S.Mukhopadhyay, A.K.Sinha, V.Kumar, A.Kumar

Investigation of different possible excitation modes in neutron-rich 78As

NUCLEAR REACTIONS 76Ge(α, np)78As, E=30, 35, 40 MeV; measured Eγ, Iγ, γγ-coin, excitation functions, γγ(θ)(DCO), γγ(linear polarization) using INGA array of six Compton-suppressed HPGe Clover detectors and one LEPS detector at the K-130 cyclotron facility of VECC-Kolkata. 78As; deduced levels, J, π, multipolarities, dipole bands, B(E2), B(M1)/B(E2) ratios, configurations, possible stapler structure of the dipole bands; calculated total Routhian surfaces for the dipole bands. Comparison with large-scale shell-model calculations using JUN45 and jj44b interactions.

doi: 10.1103/PhysRevC.102.064311
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2020TH02      Nucl.Phys. A1002, 121981 (2020)

V.Thakur, P.Kumar, S.Thakur, S.Thakur, V.Kumar, S.K.Dhiman

Microscopic study of the shell structure evolution in isotopes of light to middle mass range nuclides

NUCLEAR STRUCTURE 24,26,28,30,32,34,36,38,40,42,44Si, 28,30,32,34,36,38,40,42,44,46,48S, 32,34,36,38,40,42,44,46,48,50,52Ar, 38,40,42,44,46,48,50,52,54,56,58Ca; analyzed evolution of shell structures in the even-even isotopes of silicon, sulphur, argon and calcium; calculated binding energy per nucleon using RHB theory.

doi: 10.1016/j.nuclphysa.2020.121981
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2019KU04      Acta Phys.Pol. B50, 173 (2019)

V.Kumar, P.Das

Identification of 38 keV γ Transition in 132La Amidst X Rays

NUCLEAR REACTIONS 122Sn(14N, X), (15N, X)132La, E=4-6 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced low-energy γ-ray transition, J, π, bands.

doi: 10.5506/APhysPolB.50.173
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2019SA23      Hyperfine Interactions 240, 37 (2019)

A.Saxena, A.Kumar, V.Kumar, P.C.Srivastava, T.Suzuki

Ab initio description of collectivity for sd shell nuclei

NUCLEAR STRUCTURE 20Ne, 24,32Mg, 34Si; calculated energy levels, J, π, B(E2) values. Comparison with experimental data.

doi: 10.1007/s10751-019-1582-y
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2019TO10      Eur.Phys.J. A 55, 158 (2019)

D.A.Torres, R.Chapman, V.Kumar, B.Hadinia, A.Hodsdon, M.Labiche, X.Liang, D.O'Donnell, J.Ollier, R.Orlandi, J.F.Smith, K.-M.Spohr, P.Wady, Z.M.Wang, L.Corradi, E.Fioretto, A.Gadea, G.de Angelis, N.Marginean, D.R.Napoli, E.Sahin, A.M.Stefanini, J.J.Valiente-Dobon, F.D.Vedova, M.Axiotis, T.Martinez, S.Szilner, D.Bazzacco, S.Beghini, E.Farnea, R.Marginean, D.Mengoni, G.Montagnoli, F.Recchia, F.Scarlassara, C.A.Ur, S.M.Lenzi, S.Lunardi, T.Kroll, F.Haas, T.Faul, M.Hjorth-Jensen, B.G.Carlsson, S.J.Freeman, A.G.Smith, G.Jones, N.Thompson, G.Pollarolo, G.S.Simpson

Study of medium-spin states of neutron-rich 87, 89, 91Rb isotopes

NUCLEAR REACTIONS 124Sn(96Zr, f), (96Zr, x)87,89,91Rb, E=530 MeV; measured Eγ, Iγ of fission fragments γ-ray decay; 176Yb(36S, x), (36S, f)87,89,91Rb, E=230 MeV; measured thick target Eγ, Iγ of fission fragments γ-ray decay. 87,89,91Rb; deduced γ-ray energy spectrum, new scheme of levels, Jπ, (up to 6423 keV (27/2)+ state), γ-ray transitions; calculated multipolarities, energy differences between (5/2)- and (3/2)- states for odd-A Rb isotopes using spherical shell-model and cranked Nilsson-Strutinsky-Bogoliubov approach.

doi: 10.1140/epja/i2019-12839-6
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2017KA03      Phys.Lett. B 765, 317 (2017); Erratum Phys.Lett. B 766, 362 (2017)

J.Kaur, N.Bansal, A.K.Bhati, R.Kumar, Vijay R.Sharma, K.Kapoor, V.Kumar, N.Kaur

g-factor and quadrupole moment of the 21-/2 isomeric state in 131La: Signature for a weakly-deformed magnetic rotational band head

NUCLEAR REACTIONS 116Cd(19F, 4nγ)131La, E=75 MeV; measured reaction products, Eγ, Iγ; deduced g -factor and the static quadrupole moment of a magnetic rotational band head, T1/2. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2016.12.012
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2017KU09      Acta Phys.Pol. B48, 819 (2017)

S.Kumar, V.Kumar, D.Negi

Symmetries in Mirror Energy Differences

doi: 10.5506/aphyspolb.48.819
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2017SA17      Nucl.Phys. A961, 169 (2017)

K.Saraswat, P.Shukla, V.Kumar, V.Singh

Energy loss of heavy quarks and B and D meson spectra in PbPb collisions at LHC energies

doi: 10.1016/j.nuclphysa.2017.02.013
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2017SA26      Eur.Phys.J. A 53, 84 (2017)

K.Saraswat, P.Shukla, V.Kumar, V.Singh

Strange hadron production in pp, pPb and PbPb collisions at LHC energies

doi: 10.1140/epja/i2017-12276-7
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2016CH14      Phys.Rev. C 93, 044318 (2016)

R.Chapman, Z.M.Wang, M.Bouhelal, F.Haas, X.Liang, F.Azaiez, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, G.Simpson, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

Particle-core coupling in 37S

NUCLEAR REACTIONS 208Pb(36S, 37S), E=215 MeV; measured yields of 34,35,36,37,38S by using PRISMA magnetic spectrometer, Eγ, Iγ, (particle)γ-coin using CLARA array for γ-ray detection at INFN-Legnaro facility. 37S; deduced levels, J, π, configurations, wave-function amplitudes. Comparison with previous experimental results, and with large-scale state-of-the-art shell-model calculations with the SDPF-U effective interaction using NATHAN code.

doi: 10.1103/PhysRevC.93.044318
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2016CH33      Phys.Rev. C 94, 024325 (2016)

R.Chapman, Z.M.Wang, M.Bouhelal, F.Haas, X.Liang, F.Azaiez, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

First in-beam γ-ray study of the level structure of neutron-rich 39S

NUCLEAR REACTIONS 208Pb(36S, 39S), E=215 MeV; measured Eγ, Iγ, particle spectra, (39S ions)γ coin, mass spectrum of sulfur isotopes in coincidence with γ rays using the magnetic spectrometer PRISMA for particles and CLARA array for γ rays at INFN-Legnaro accelerator facility. 39S; deduced levels, J, π, configurations. Comparison with shell model calculations using SDPF-U effective interaction, and with level structure in N=23 isotones 37Si and 41Ar. Systematics of first 7/2- and 11/2- states in 31,33,35,37,39,41S, 35,37,39,41,43,45Ar.

doi: 10.1103/PhysRevC.94.024325
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2016KU14      Eur.Phys.J. A 52, 181 (2016)

V.Kumar, P.C.Srivastava

Shell model description of Gamow-Teller strengths in pf-shell nuclei

RADIOACTIVITY 42Ti, 46Cr, 50Fe, 54Ni(β+); calculated β-decay Gamow-Teller matrix elements, B(GT) transition strength distributions using shell model restricted to the pf valence space with several effective interactions. Compared with other calculations and data.

doi: 10.1140/epja/i2016-16181-3
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2016KU17      Nucl.Phys. A955, 1 (2016)

N.Kumar, S.Kumar, V.Kumar, S.K.Mandal, R.Palit, S.Saha, J.Sethi, T.Trivedi, S.C.Pancholi, P.C.Srivastava

Polarization measurements and high-spin states in 8638Sr48

NUCLEAR REACTIONS 76Ge(13C, 3n), E=45 MeV; measured Eγ, Iγ(θ), γγ-coin using INGA array of 15 Compton-suppressed clover HPGe. 86Sr deduced γ transitions, transition multipolarity, levels, J, π, rotational bands up to high spins, IPDCO (Integrated Polarization Direction Correlation Method) linear polarization using Compton-scattereed photons; calculated wavefunctions of different states in Band 3, levels, J, π using shell model and TAC (Tilted-Axis Cranking) with different interactions.

doi: 10.1016/j.nuclphysa.2016.05.018
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2016KU21      J.Phys.(London) G43, 105104 (2016)

V.Kumar, P.C.Srivastava, H.Li

Nuclear β--decay half-lives for fp and fpg shell nuclei

RADIOACTIVITY 52,53,54,55,56,57,58Ca, 54,55,56,57,58,59,60,61Sc, 56,57,58,59,60,61,62Ti, 56,57,58,59,60,61,62,63V, 59,60,61,62,63,64Cr, 60,61,62,63,64,65Mn, 65,66Fe, 64,65,66,67Co, 67,68,69,70,71,72,73,74,75,76,77,78Ni, 68,69,70,71,72,73,74,75,76,77,78,79Cu, 73,74,75,76,77,78,79,80Zn(β-); calculated T1/2. Comparison with experimental data.

doi: 10.1088/0954-3899/43/10/105104
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2016SA12      Phys.Rev. C 93, 035504 (2016)

K.Saraswat, P.Shukla, V.Kumar, V.Singh

Coherent pion production in neutrino-nucleus scattering

NUCLEAR REACTIONS C(π, π);E at 0.1-10 GeV/c; calculated total σ as function of pion momentum using Glauber model. C(ν, π), E<20 GeV; calculated total and differential cross sections for incident muon neutrinos using Adler's partially conserved axial current (PCAC) model. Comparison with Berger-Sehgal theoretical approach, and with available experimental data.

doi: 10.1103/PhysRevC.93.035504
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2016SR03      Acta Phys.Pol. B47, 2151 (2016)

P.C.Srivastava, V.Kumar, M.J.Ermamatov

High-spin Structure of 87Sr and 87Zr Nuclei: Shell-model Interpretation

NUCLEAR STRUCTURE 87Sr, 87Zr; calculated energy levels, J, π, B(E2) values. Nuclear shell model, JUN45 and jj44b effective interactions.

doi: 10.5506/APhysPolB.47.2151
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2016SR05      Phys.Rev. C 94, 064306 (2016)

P.C.Srivastava, V.Kumar

Spectroscopic factor strengths using ab initio approaches

NUCLEAR REACTIONS 27Al(d, 3He)26Mg, E=25 MeV; 27Al(d, t)26Al, E not given; calculated spectroscopic factors C2S for levels with L=0 and L=2, wave functions and amplitudes of different configurations. Shell-model calculations using in-medium similarity renormalization, the ab initio coupled cluster effective interaction (CCEI), and phenomenological USDB interaction. Comparison with experimental data.

NUCLEAR STRUCTURE 26Mg, 26Al; calculated levels, J, π. Shell-model calculations using in-medium similarity renormalization group (IM-SRG), ab initio coupled cluster effective interaction (CCEI), and phenomenological USDB interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.064306
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2015CH56      Phys.Rev. C 92, 044308 (2015)

R.Chapman, A.Hodsdon, M.Bouhelal, F.Haas, X.Liang, F.Azaiez, Z.M.Wang, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

Spectroscopy of neutron-rich 34, 35, 36, 37, 38P populated in binary grazing reactions

NUCLEAR REACTIONS 208Pb(36S, X)32P/33P/34P/35P/36P/37P/38P, E=215 MeV; measured mass spectrum, Eγ, Iγ, (reaction products)γ-, γγ-coin using PRISMA-CLARA apparatus at INFN-LNL-Legnaro accelerator facility. 34,35,36,37,38P; deduced levels, J, π, configurations. Comparison with previous experimental studies, and with shell-model calculations.

doi: 10.1103/PhysRevC.92.044308
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2015GA19      Phys.Rev. C 91, 064313 (2015)

L.P.Gaffney, A.P.Robinson, D.G.Jenkins, A.N.Andreyev, M.Bender, A.Blazhev, N.Bree, B.Bruyneel, P.A.Butler, T.E.Cocolios, T.Davinson, A.N.Deacon, H.De Witte, D.DiJulio, J.Diriken, A.Ekstrom, Ch.Fransen, S.J.Freeman, K.Geibel, T.Grahn, B.Hadinia, M.Hass, P.-H.Heenen, H.Hess, M.Huyse, U.Jakobsson, N.Kesteloot, J.Konki, Th.Kroll, V.Kumar, O.Ivanov, S.Martin-Haugh, D.Mucher, R.Orlandi, J.Pakarinen, A.Petts, P.Peura, P.Rahkila, P.Reiter, M.Scheck, M.Seidlitz, K.Singh, J.F.Smith, J.Van de Walle, P.Van Duppen, D.Voulot, R.Wadsworth, N.Warr, F.Wenander, K.Wimmer, K.Wrzosek-Lipska, M.Zielinska

Collectivity in the light radon nuclei measured directly via Coulomb excitation

NUCLEAR REACTIONS 109Ag, 120Sn(202Rn, 202Rn'), (204Rn, 204Rn'), E=2.845, 2.90, 2.28 MeV, [secondary 202,204Rn beams from U(p, X), E=1.4 GeV from Proton Synchrotron Booster, REX-TRAP, REX-EBIS and REX-LINAC at ISOLDE-CERN facility]; measured scattered heavy ion spectra, Eγ, Iγ, (particle)γ-coin using Miniball array. Coulomb excitation. 202,204Rn; deduced levels, E2 matrix elements, spectroscopic quadrupole moment, B(E2). GOSIA analysis of experimental data for 202,204Rn and 109Ag, 120Sn from Coulomb excitation. Comparison with state-of-the-art beyond-mean-field model calculations. Systematics of energies and transition quadrupole moments of yrast states, B(E2) and quadrupole deformation for first 2+ states in 198,200,202,204,206,208,210,212Rn.

doi: 10.1103/PhysRevC.91.064313
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2015KU12      Mod.Phys.Lett. A 30, 1550093 (2015)

V.Kumar, P.C.Srivastava, I.O.Morales

High-spin structures of 77, 79, 81, 83As isotopes

NUCLEAR STRUCTURE 77,79,81,83As; calculated energy levels, J, π, high-spin states. Shell model, JUN45 and jj44b effective interactions.

doi: 10.1142/s0217732315500935
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2015KU21      Phys.Rev. C 92, 024908 (2015)

V.Kumar, Pr.Shukla, R.Vogt

Quarkonia suppression in PbPb collisions at √ sNN = 2.76 TeV

doi: 10.1103/PhysRevC.92.024908
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2015KU22      Nucl.Phys. A942, 1 (2015)

V.Kumar, P.C.Srivastava, M.J.Ermamatov, I.O.Morales

Analysis of proton and neutron pair breakings: High-spin structures of 124-127Te isotopes

NUCLEAR STRUCTURE 124,125,126,127Te; calculated levels, J, π, separately positive and negative parity states, high spin, rotational bands, B(E2), B(E3), B(M2), B(M4) using state-of-the-art shell model. Compared with recent data.

doi: 10.1016/j.nuclphysa.2015.07.012
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2015KU32      Phys.Atomic Nuclei 78, 1001 (2015)

V.Kumar

A test for correction made to spin systematics for coupled band in doubly-odd nuclei

NUCLEAR STRUCTURE 112,114,116Cs, 126,138Pr; analyzed available data; deduced systematics of excitation energies, J, π.

doi: 10.1134/S1063778815080074
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2014SA49      Phys.Rev. C 90, 024316 (2014)

M.Saxena, R.Kumar, A.Jhingan, S.Mandal, A.Stolarz, A.Banerjee, R.K.Bhowmik, S.Dutt, J.Kaur, V.Kumar, M.Modou Mbaye, V.R.Sharma, H.-J.Wollersheim

Rotational behavior of 120, 122, 124Te

NUCLEAR REACTIONS 120,122,124Te(58Ni, 58Ni'), E=175 MeV; measured Doppler-shifted γ-spectra, Eγ, Iγ, (particle)γ-coin. Coulomb excitation. 120,122,124Te; deduced levels, B(E2) for first 2+ states, B(E2) ratios. Comparison with large scale shell model calculations, and with predictions of IBA-2, asymmetric rotor, and vibrator models. Systematics of B(E2) values of first 2+ states in even-even Te and Cd nuclei with N=54-80.

doi: 10.1103/PhysRevC.90.024316
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2014SR03      Phys.Atomic Nuclei 77, 1334 (2014)

P.C.Srivastava, V.Kumar, M.J.Ermamatov

High-spin structures of 86, 87, 88, 89Y isotopes

NUCLEAR STRUCTURE 86,87,88,89Y; calculated energy levels, J, π. Shell model calculations, comparison with experimental data.

doi: 10.1134/S1063778814100111
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2013KA27      Phys.Rev. C 87, 064312 (2013)

J.Kaur, A.K.Bhati, N.Bansal, V.Kumar, V.R.Sharma, H.Kumar, R.Kumar, R.K.Bhowmik

g factors of 9/2- and 23/2+ isomeric states in 129Ba

NUCLEAR REACTIONS 120Sn(12C, 3n)129Ba, E=52 MeV; 124Sn(12C, 4n)132Ba, E=52 MeV; measured γ(t), isomer half-lives, spin rotation spectra at IUAC facility in Delhi; deduced Larmor precession frequency, magnetic hyperfine field, g factors, Nilsson configurations. TDPAD method. Systematics of g factors of isomers in 123,127,129,131,133Ba, 125Te, 127Xe, 131Ce.

NUCLEAR MOMENTS 129Ba; measured g factors of 9/2- and 23/2+ isomeric states with respect to g factor of 10+ isomer in 132Ba using TDPAD technique. Comparison with previous data. Assigned Nilsson configurations.

doi: 10.1103/PhysRevC.87.064312
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2013KU23      Int.J.Mod.Phys. E22, 1350091 (2013)

V.Kumar, P.C.Srivastava

Structure of odd 79, 81, 83Se isotopes with proton and neutron excitations across Z=28 and N=40

NUCLEAR STRUCTURE 79,81,83Se; calculated energy levels, J, π, occupation number, B(E2), magnetic dipole moments. Comparison with available data.

doi: 10.1142/S0218301315500912
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2013SZ02      Phys.Rev. C 87, 054322 (2013)

S.Szilner, L.Corradi, F.Haas, G.Pollarolo, L.Angus, S.Beghini, M.Bouhelal, R.Chapman, E.Caurier, S.Courtin, E.Farnea, E.Fioretto, A.Gadea, A.Goasduff, D.Jelavic-Malenica, V.Kumar, S.Lunardi, N.Marginean, D.Mengoni, T.Mijatovic, G.Montagnoli, F.Recchia, E.Sahin, M.-D.Salsac, F.Scarlassara, J.F.Smith, N.Soic, A.M.Stefanini, C.A.Ur, J.J.Valiente-Dobon

Structure of chlorine isotopes populated by heavy ion transfer reactions

NUCLEAR REACTIONS 208Pb(40Ar, pxn), E=255 MeV; measured mass distribution of chlorine fragments populated through pxn transfer channels, Eγ, Iγ, time-of-flight, energy loss, γγ-, (fragment)γ-coin using the Clara array and magnetic spectrometer Prisma at ALPI-Linac accelerator facility in Legnaro. 37,38,39,40,41,42,43Cl; deduced levels, J, π, configurations. Comparison with shell-model calculations, and previous experimental studies.

NUCLEAR STRUCTURE 37,38,39,40,41,42Cl; calculated levels, J, π, proton and neutron occupation probabilities, energy splittings between 1/2+ and 3/2+ states. Large-scale shell model calculations with PSDPF interaction.

doi: 10.1103/PhysRevC.87.054322
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2012CA28      Phys.Rev. C 86, 032801 (2012)

M.Carmona-Gallardo, B.S.Nara Singh, M.J.G.Borge, J.A.Briz, M.Cubero, B.R.Fulton, H.Fynbo, N.Gordillo, M.Hass, G.Haquin, A.Maira, E.Nacher, Y.Nir-El, V.Kumar, J.McGrath, A.Munoz Martin, A.Perea, V.Pesudo, G.Ribeiro, J.Sanchez del Rio, O.Tengblad, R.Yaniv, Z.Yungreis

New measurement of the 3He(α, γ)7Be cross section at medium energies

NUCLEAR REACTIONS 4He(3He, γ)7Be, E=2507, 4010, 5312 keV; measured 7Be recoils, Eγ, Iγ, (recoil)γ-correlated events, σ, astrophysical S34(E) factor using activation method. Relevance to solar neutrino flux and the primordial 7Li abundance. Comparison with several previous measurements including ERNA data, and some theoretical calculations.

doi: 10.1103/PhysRevC.86.032801
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2012CA32      J.Phys.:Conf.Ser. 337, 012061 (2012)

M.Carmona-Gallardo, B.S.Nara Singh, O.Tengblad, M.Hass, M.Alcorta, M.J.G.Borge, J.A.Briz, C.Cruz, M.Cubero, R.Dominguez-Reyes, B.R.Fulton, H.Fynbo, N.Gordillo, G.Haquin, Y.Nir-El, V.Kumar, A.Maira, J.McGrath, A.Munoz Martin, A.Perea, Z.Yungreis

Astrophysical S factor for the 4He(3He, γ)7Be reaction at medium energies

NUCLEAR REACTIONS 4He(3He, γ), E=2.3-5.3 MeV; measured prompt Eγ, Iγ, β-delayed Eγ, Iγ from from 7Be EC decay, counting of 7Be ions; deduced S-factor.

doi: 10.1088/1742-6596/337/1/012061
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2012FI02      Phys.Rev. C 85, 034334 (2012)

E.Fiori, G.Georgiev, A.E.Stuchbery, A.Jungclaus, D.L.Balabanski, A.Blazhev, S.Cabaret, E.Clement, M.Danchev, J.M.Daugas, S.Grevy, M.Hass, V.Kumar, J.Leske, R.Lozeva, S.Lukyanov, T.J.Mertzimekis, V.Modamio, B.Mouginot, F.Nowacki, Yu.E.Penionzhkevich, L.Perrot, N.Pietralla, K.Sieja, K.-H.Speidel, I.Stefan, C.Stodel, J.C.Thomas, J.Walker, K.O.Zell

First g(2+) measurement on neutron-rich 72Zn, and the high-velocity transient field technique for radioactive heavy-ion beams

NUCLEAR REACTIONS 208Pb, Gd(76Ge, X), E=37.8 MeV/nucleon; Gd(72Zn, X), [secondary 72Zn beam from Al(76Ge, X), E=59 MeV/nucleon], E=36.5 MeV/nucleon; measured Eγ, Iγ, γγ-coin, angular correlations, precession angles. 72Zn, 76Ge; deduced levels, J, π, g factors. Systematics and large-scale shell-model calculations of level energies, B(E2), and g factors of first 2+ states in A=64-80 even-even Zn isotopes. Evidence for predicted transition in the structure of the Zn isotopes near N=40.

NUCLEAR MOMENTS 76Ge, 72Zn; measured g factors of first 2+ states with high-velocity transient-field (HVTF) technique. Systematics and large-scale shell-model calculations of g factors of first 2+ states in A=64-80 even-even Zn isotopes.

doi: 10.1103/PhysRevC.85.034334
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2012KU32      Phys.Rev. C 86, 054907 (2012)

V.Kumar, P.Shukla, R.Vogt

Components of the dilepton continuum in Pb+Pb collisions at √ sNN =2.76 TeV

doi: 10.1103/PhysRevC.86.054907
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2012NE03      Phys.Rev. C 85, 057301 (2012)

D.Negi, T.Trivedi, A.Dhal, S.Kumar, V.Kumar, S.Roy, M.K.Raju, S.Appannababu, G.Mohanto, J.Kaur, R.K.Sinha, D.Choudhury, D.Singh, R.Kumar, R.P.Singh, S.Muralithar, A.K.Bhati, S.C.Pancholi, R.K.Bhowmik

Shears mechanism in 109In

NUCLEAR REACTIONS 96Zr(19F, 6n), E=105 MeV; measured Eγ, Iγ, γγ-coin, DCO ratios. 106In; deduced high-spin levels, J, π, bands, configurations. Comparison with tilted-axis cranking model calculations. Systematics of alignment plots for 3-qp band structures in 105,107,109In.

doi: 10.1103/PhysRevC.85.057301
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2012ST07      Europhys.Lett. 98, 32001 (2012)

T.Stora, E.Noah, R.Hodak, T.Y.Hirsh, M.Hass, V.Kumar, K.Singh, S.Vaintraub, P.Delahaye, H.Franberg-Delahaye, M.-G.Saint-Laurent, G.Lhersonneau

A high intensity 6He beam for the β-beam neutrino oscillation facility

NUCLEAR REACTIONS 9Be(n, α), E=0.1-1400 MeV; measured reaction products. 6He; deduced yields. Anti-neutrino source for β-beam at CERN.

doi: 10.1209/0295-5075/98/32001
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2011AD18      Eur.Phys.J. A 47, 85 (2011)

J.Adam, C.Bhatia, K.Katovsky, V.Kumar, M.Majerle, V.S.Pronskikh, A.M.Khilmanovich, B.A.Martsynkevich, I.V.Zhuk, V.M.Golovatiouk, W.Westmeier, A.A.Solnyshkin, V.M.Tsoupko-Sitnikov, A.S.Potapenko

A study of reaction rates of (n, f), (n, γ) and (n, 2n) reactions in natU and 232Th by the neutron fluence produced in the graphite set-up (GAMMA-3) irradiated by 2.33 GeV deuteron beam

NUCLEAR REACTIONS 232Th, U(n, f), (n, γ), (n, 2n), E=1.E-10-1.E3 MeV; measured reaction products, Eγ, Iγ. 85mKr, 93Y, 97Zr, 99Mo, 103Ru, 105Rh, 132Te, 131,133I, 133,135Xe, 140Ba, 141,143Ce, 231Th, 233Pa, 237U, 239Np deduced reaction rates, T1/2. 232Th, U(n, 2n), E=10-2000 MeV; calculated σ using TALYS. 232Th(n, f), E=400 keV, 14, 25, 50, 100, 200 MeV; measured fission products, deduced mass distribution; calculated mass distribution at two lowest energies using TALYS. Neutron flux calculated using MCNPX with LA150 cross section library.

doi: 10.1140/epja/i2011-11085-4
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2011KU12      Int.J.Mod.Phys. E20, 1455 (2011)

V.Kumar, Suresh Kumar, Sushil Kumar, Z.Hasan, B.S.Koranga, D.Kumar, D.Negi, L.Angus

A semi-classical approach to signature splitting and signature inversion in odd-odd nuclei

NUCLEAR STRUCTURE 74,76Br, 76,78,80,82,84Rb, 80,82,84Y, 120,122,124,126,128,130Cs, 124,126,128,130,132La, 126,128,130,132,134Pr, 134Pm, 100Tc, 100,102,104,106Rh, 104,106Ag, 152Eu, 154,156Tb, 156,158,160Ho, 158,160,162,164Tm, 162,164Lu; calculated energy staggering, Coriolis and n-p interactions, γ-triaxial deformation for high-j rotational bands. Axially symmetric rotor plus two-particle models.

doi: 10.1142/S0218301311018447
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2011SZ02      Phys.Rev. C 84, 014325 (2011)

S.Szilner, L.Corradi, F.Haas, D.Lebhertz, G.Pollarolo, C.A.Ur, L.Angus, S.Beghini, M.Bouhelal, R.Chapman, E.Caurier, S.Courtin, E.Farnea, E.Fioretto, A.Gadea, A.Goasduff, D.Jelavic-Malenica, V.Kumar, S.Lunardi, N.Marginean, P.Mason, D.Mengoni, G.Montagnoli, F.Nowacki, F.Recchia, E.Sahin, M.-D.Salsac, F.Scarlassara, R.Silvestri, J.F.Smith, N.Soic, A.M.Stefanini, J.J.Valiente-Dobon

Interplay between single-particle and collective excitations in argon isotopes populated by transfer reactions

NUCLEAR REACTIONS 208Pb(40Ar, X), E=255 MeV; measured Eγ, Iγ, γγ-, (particle)γ-coin using Prisa-Clara system. 40,41,42,43Ar; deduced levels, J, π. Comparison with shell model calculations, and with energy level systematics of N=20-28 argon nuclei.

doi: 10.1103/PhysRevC.84.014325
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2011WA13      Phys.Rev. C 83, 061304 (2011)

Z.M.Wang, R.Chapman, F.Haas, X.Liang, F.Azaiez, B.R.Behera, M.Burns, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, A.Latina, N.Marginean, G.Montagnoli, D.R.Napoli, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

Collectivity in 41S

NUCLEAR REACTIONS 208Pb(36S, X), E=215 MeV; measured Eγ, Iγ, (particle)γ-coin using PRISMA spectrometer and CLARA array. 41S; deduced levels, J, π, multipolarity, configurations. Comparison with previous Coulomb excitation study and large-scale shell-model calculations using SDPF-U effective interaction.

doi: 10.1103/PhysRevC.83.061304
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2010AD13      Eur.Phys.J. A 43, 159 (2010)

J.Adam, K.Katovsky, M.Majerle, M.I.Krivopustov, V.Kumar, C.Bhatia, M.Sharma, A.A.Solnyshkin, V.M.Tsoupko-Sitnikov

A study of nuclear transmutation of Th and natU with neutrons produced in a Pb target and U blanket irradiated by 1.6 GeV deuterons

NUCLEAR REACTIONS 232Th(n, γ), (n, 2n), (n, F)99Mo, 235,238U(n, γ), (n, F)99Mo/132Te/133I/135I/135Xe/140Ba/143Ce, E=thermal-1000 MeV [from 208Pb(d, X), E=1.6 GeV spallation source]; measured Eγ, Iγ using HPGe detectors; deduced σ, reaction and transmutation rates. Comparison with simulations and TARC experimental data.

doi: 10.1140/epja/i2010-10909-y
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2010BH02      Phys.Rev. C 81, 024614 (2010)

C.Bhatia, V.Kumar

Determination of neutron multiplication coefficients for fuel elements irradiated by spallation neutrons

NUCLEAR REACTIONS 232Th, 233,235,238U(n, X), E=spallation neutrons; analyzed σ, neutron multiplication coefficient keff in capture, fission, and non-elastic channels for irradiation of fuel elements by spallation neutrons of energies up to 250 MeV, neutron removal and production rates. Discussed neutron poisoning of thermal and fast neutrons.

doi: 10.1103/PhysRevC.81.024614
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2010DE11      Phys.Rev. C 81, 034308 (2010), Publishers Note Phys.Rev. C 81, 059903 (2010)

M.De Rydt, J.M.Daugas, F.de Oliveira Santos, L.Gaudefroy, S.Grevy, D.Kameda, V.Kumar, R.Lozeva, T.J.Mertzimekis, P.Morel, T.Nagatomo, G.Neyens, L.Perrot, O.Sorlin, C.Stodel, J.C.Thomas, N.Vermeulen, P.Vingerhoets

g factor of the 44Cl ground state: Probing the reduced Z=16 and N=28 gaps

NUCLEAR REACTIONS 9Be(48Ca, X)44Cl, E=60 MeV/nucleon; measured β-NMR resonance Larmor frequency; deduced g factor, levels, J, π, configurations.

NUCLEAR MOMENTS 44Cl; measured g factor by Larmor frequency using β-NMR method. Comparison with systematics of 39,41,43,45Cl, 46K and with shell-model calculations.

NUCLEAR STRUCTURE 39,41,43,44,45Cl, 46K; calculated levels, J, π, g factors and configurations using large-scale shell-model approach with the SDPF-U residual interaction.

doi: 10.1103/PhysRevC.81.034308
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2010HE17      Nucl.Phys. A834, 670c (2010)

J.J.He, P.J.Woods, T.Davinson, M.Aliotta, J.Buescler, E.Clement, P.Delahaye, M.Hass, D.G.Jenkins, V.Kumar, A.St.J.Murphy, P.Neyskens, R.Raabe, A.P.Robinson, J.van der Walle, N.Warr, F.Wenander

Measurement of the inelastic branch of the stellar 14O(α, p)17F reaction occurring in the explosive burning in Novae and X-ray bursters

NUCLEAR REACTIONS 1H(17F, p), E=44.2 MeV; measured thick target Ep, Ip(θ), Eγ, Iγ, pγ-coin. 18Ne deduced resonance parameters using R-matrix fit.

doi: 10.1016/j.nuclphysa.2010.01.120
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2010KU10      Phys.Rev. C 81, 054601 (2010)

H.Kumawat, V.Jha, V.V.Parkar, B.J.Roy, S.Santra, V.Kumar, D.Dutta, P.Shukla, L.M.Pant, A.K.Mohanty, R.K.Choudhury, S.Kailas

Inclusive α-production cross section for the 6Li + 90Zr system at energies near the fusion barrier

NUCLEAR REACTIONS 90Zr(6Li, X), E=15, 17, 19, 21, 25, 30 MeV; measured α-spectra, σ and σ(θ). Comparison with DWBA and statistical model calculations.

doi: 10.1103/PhysRevC.81.054601
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2010KU15      Phys.Rev. C 81, 067304 (2010)

S.Kumar, A.K.Jain, A.Goel, S.S.Malik, R.Palit, H.C.Jain, I.Mazumdar, P.K.Joshi, Z.Naik, A.Dhal, T.Trivedi, I.Mehrotra, S.Appannababu, L.Chaturvedi, V.Kumar, R.Kumar, D.Negi, R.P.Singh, S.Muralithar, R.K.Bhowmik, S.C.Pancholi

Band structure and shape coexistence in 13556Ba79

NUCLEAR REACTIONS 130Te(9Be, 4n), E=42.5 MeV; measured Eγ, Iγ, γγ-coin, DCO, γ(lin pol). 135Ba; deduced levels, J, π, multipolarity, bands, configurations, possible magnetic rotational band. Comparison with TAC calculations.

doi: 10.1103/PhysRevC.81.067304
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2010KU23      Phys.Rev. C 82, 054302 (2010)

V.Kumar, P.Das, S.Lakshmi, P.K.Joshi, H.C.Jain, R.P.Singh, R.Kumar, S.Muralithar, R.K.Bhowmik

Decoupling behavior in 132La

NUCLEAR REACTIONS 122Sn(14N, xn), (15N, xn), E=62 MeV; measured Eγ, Iγ, γγ-coin, half-lives by Doppler-shift recoil distance method (RDM). 132La; deduced levels, J, π. Comparison with particle-rotor coupling model calculations and with structure of 131La and 130Ba. Pseudospin coupling model and decoupled structures.

doi: 10.1103/PhysRevC.82.054302
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2010NE05      Phys.Rev. C 81, 054322 (2010)

D.Negi, T.Trivedi, A.Dhal, S.Kumar, V.Kumar, S.Roy, M.K.Raju, S.Appannababu, G.Mohanto, J.Kaur, R.K.Sinha, R.Kumar, R.P.Singh, S.Muralithar, A.K.Bhati, S.C.Pancholi, R.K.Bhowmik

High spin spectroscopy and shears mechanism in 107In

NUCLEAR REACTIONS 94Mo(16O, 2np)107In, E=70 MeV; measured Eγ, Iγ, γγ-coin, DCO, linear polarization, half-lives by DSAM using INGA array. 107In; deduced levels, J, π, multipolarity, bands, B(M1), B(E2), B(M1)/B(E2), Q(t), β2, configurations, shears band. Comparison with systematics of bands in 105,108In and with TAC calculations.

doi: 10.1103/PhysRevC.81.054322
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2010SU12      Phys.Rev. C 81, 067304 (2010), see 2010KU15

Suresh Kumar, A.K.Jain, A.Goel, S.S.Malik, R.Palit, H.C.Jain, I.Mazumdar, P.K.Joshi, Z.Naik, A.Dhal, T.Trivedi, I.Mehrotra, S.Appannababu, L.Chaturvedi, V.Kumar, R.Kumar, D.Negi, R.P.Singh, S.Muralithar, R.K.Bhowmik, S.C.Pancholi

Band structure and shape coexistence in 13556Ba79

doi: 10.1103/PhysRevC.81.067304
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2010WA12      Phys.Rev. C 81, 054305 (2010)

Z.M.Wang, R.Chapman, X.Liang, F.Haas, F.Azaiez, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, A.Latina, S.Lunardi, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

γ-ray spectroscopy of neutron-rich 40S

NUCLEAR REACTIONS 208Pb(36S, X), E=215 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin using PRISMA spectrometer and CLARA array. 40S; deduced levels, J, π, B(E2), configurations. Comparison with previous work and large-scale sd-pf shell model calculations. Systematics of energies of first 2+ and 4+ states and B(E2) for 38,40,42,44S nuclei. 38S; measured Eγ, Iγ.

NUCLEAR REACTIONS 208Pb(36S, X)34S/35S/36S/37S/38S/39S/40S/41S, E=215 MeV; measured yields.

doi: 10.1103/PhysRevC.81.054305
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2010WA20      Phys.Rev. C 81, 064301 (2010)

Z.M.Wang, R.Chapman, X.Liang, F.Haas, M.Bouhelal, F.Azaiez, B.R.Behera, M.Burns, E.Caurier, L.Corradi, D.Curien, A.N.Deacon, Zs.Dombradi, E.Farnea, E.Fioretto, A.Gadea, A.Hodsdon, F.Ibrahim, A.Jungclaus, K.Keyes, V.Kumar, A.Latina, N.Marginean, G.Montagnoli, D.R.Napoli, F.Nowacki, J.Ollier, D.O'Donnell, A.Papenberg, G.Pollarolo, M.-D.Salsac, F.Scarlassara, J.F.Smith, K.M.Spohr, M.Stanoiu, A.M.Stefanini, S.Szilner, M.Trotta, D.Verney

Intruder negative-parity states of neutron-rich 33Si

NUCLEAR REACTIONS 208Pb(36S, X)30Si/31Si/32Si/33Si/34Si/35Si/36Si, E=215 MeV; measured mass spectrum of Si fragments, Eγ, Iγ, (fragment)γ-, γγ-coin with CLARA array and PRISMA spectrometer. 33Si; deduced levels, J, π, multipolarity, shell-model configurations. Comparison with large-scale shell model calculations using PSDPFB effective interaction.

doi: 10.1103/PhysRevC.81.064301
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2009GA05      Phys.Rev.Lett. 102, 092501 (2009)

L.Gaudefroy, J.M.Daugas, M.Hass, S.Grevy, Ch.Stodel, J.C.Thomas, L.Perrot, M.Girod, B.Rosse, J.C.Angelique, D.L.Balabanski, E.Fiori, C.Force, G.Georgiev, D.Kameda, V.Kumar, R.L.Lozeva, I.Matea, V.Meot, P.Morel, B.S.Nara Singh, F.Nowacki, G.Simpson

Shell Erosion and Shape Coexistence in 4316S27

RADIOACTIVITY 43S(IT); measured Eγ, Iγ(θ), g-factor using the time dependent perturbed angular distribution method; deduced B(E2), B(M1).

doi: 10.1103/PhysRevLett.102.092501
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2009HE16      Phys.Rev. C 80, 042801 (2009)

J.J.He, P.J.Woods, T.Davinson, M.Aliotta, J.Buscher, E.Clement, P.Delahaye, M.Hass, D.G.Jenkins, V.Kumar, A.St.J.Murphy, P.Neyskens, R.Raabe, A.P.Robinson, D.Voulot, J.van der Walle, N.Warr, F.Wenander

Measurement of the inelastic branch of the 14O(α, p)17F reaction: Implications for explosive burning in novae and x-ray bursters

NUCLEAR REACTIONS 1H(17F, p'), E=44.2 MeV; measured proton spectra, gamma spectra at the REX-ISOLDE facility. 14O(α, p)17F; deduced resonant contribution to the reaction rates of astrophysical significance for hot CNO cycle.

doi: 10.1103/PhysRevC.80.042801
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2009KU17      Eur.Phys.J. A 40, 231 (2009)

V.Kumar, C.Bhatia, H.Kumawat, J.Adam

Validation of CASCADE code using the monitor reactions

NUCLEAR REACTIONS 27Al(n, X), (p, X), E=10-25000 MeV; 27Al(d, X), E=10-25000 MeV/nucleon; calculated non-elastic σ. 27Al(n, X)22Na/24Na, E=1-25000 MeV; 27Al(p, X)22Na/24Na, E=10-25000 MeV; 27Al(d, X)24Na, E=200-25000 MeV/nucleon; calculated σ. Comparison of the CASCADE code with experimental data.

doi: 10.1140/epja/i2009-10760-9
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2008HA05      J.Phys.(London) G35, 014042 (2008)

M.Hass, D.Berkovits, T.Y.Hirsh, V.Kumar, M.Lewitowicz, F.de Oliveira, S.Veintraub

Light radio-isotopes for nuclear astrophysics and neutrino physics

NUCLEAR REACTIONS 14N(d, n), (d, 2n), E < 40 MeV; calculated cross sections production yields.

doi: 10.1088/0954-3899/35/1/014042
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2008KU09      Phys.Rev. C 77, 051304 (2008)

V.Kumar, M.Hass, Y.Nir-El, G.Haquin, Z.Yungreiss

Absence of low-temperature dependence of the decay of 7Be and 198Au in metallic hosts

RADIOACTIVITY 7Be(EC); 198Au(β-); measured dependence of decay rate on temperature. Be in Cu host, Au in Al-Au alloy. No evidence found for temperature dependence on half-life.

doi: 10.1103/PhysRevC.77.051304
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2008KU16      Phys.Rev. C 78, 044617 (2008)

H.Kumawat, V.Jha, B.J.Roy, V.V.Parkar, S.Santra, V.Kumar, D.Dutta, P.Shukla, L.M.Pant, A.K.Mohanty, R.K.Choudhury, S.Kailas

Breakup threshold anomaly in the elastic scattering for the 6Li + 90Zr system

NUCLEAR REACTIONS 90Zr(6Li, 6Li), E=11, 12, 13, 14, 15, 17, 19, 21, 25, 30 MeV; measured angular distributions, σ, optical potentials, normalization factors. Comparison with Continuum Discretized Coupled Channels calculations.

doi: 10.1103/PhysRevC.78.044617
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2007KU07      Pramana 68, 315 (2007)

V.Kumar, H.Kumawat, M.Sharma

Role of (n, xn) reactions in ADS, IAEA-benchmark and the Dubna Cascade Code

NUCLEAR REACTIONS 232Th, 233U(n, xn), E=10-100 MeV; calculated σ.

doi: 10.1007/s12043-007-0036-2
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2007KU13      Phys.Rev. C 76, 014309 (2007)

V.Kumar, P.Das, R.P.Singh, R.Kumar, S.Muralithar, R.K.Bhowmik

Multiparticle M1 band in 134La

NUCLEAR REACTIONS 124Sn(14N, 4n), E=67 MeV; measured Eγ, Iγ, γγ-coinc, lifetimes. 134La deduced levels, J, π.

doi: 10.1103/PhysRevC.76.014309
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2007KU32      Hyperfine Interactions 175, 121 (2007)

V.Kumar, P.Thakur, A.K.Bhati, R.P.Singh, R.K.Bhowmik

Electric quadrupole moments of the Kπ = 8- and 23/2- isomeric states in 170, 171, 172Hf

NUCLEAR REACTIONS 160Gd(16O, X)170Hf/171Hf/172Hf, E<104 MeV; measured reaction products, Eγ, Iγ; deduced isomers spectroscopic quadrupole moments, quadrupole deformation. Comparison with he multi-quasiparticle calculations.

doi: 10.1007/s10751-008-9579-y
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2007SH15      Pramana 68, 307 (2007)

M.Sharma, V.Kumar, H.Kumawat, J.Adam, V.S.Barashenkov, S.Ganesan, S.Golovatiouk, S.K.Gupta, S.Kailas, M.I.Krivopustov, H.S.Palsania, V.Pronskikh, V.M.Tsoupko-Sitnikov, N.Vladimirova, H.Westmeier, W.Westmeier

Measurement of neutron-induced activation cross-sections using spallation source at JINR and neutronic validation of the Dubna code

NUCLEAR REACTIONS 232Th(n, γ), (n, 2n), 197Au(n, γ), (n, α), (n, 2n), (n, 4n), (n, 6n), (n, 7n), (n, 8n), (n, 6np), 59Co(n, α), (n, 2n), (n, 4n), (n, 5n), 181Ta(n, γ), (n, 2n), (n, 4n), (n, 5n), (n, np), E=spectrum; measured spectrum-averaged σ. Spallation neutrons from proton-induced reaction.

doi: 10.1007/s12043-007-0035-3
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2006DE15      Phys.Rev. C 73, 034313 (2006)

A.Y.Deo, S.B.Patel, S.K.Tandel, S.Muralithar, R.P.Singh, R.Kumar, R.K.Bhowmik, S.S.Ghugre, A.K.Singh, V.Kumar, Amita

Systematics of the shears mechanism in silver isotopes

NUCLEAR REACTIONS 78Se(32S, 2npα), E=130 MeV; 80Se(30Si, 4np), (30Si, 3np), E=120 MeV; measured Eγ, Iγ, γγ-coin, DSA. 103,105,106Ag levels deduced T1/2, B(M1), B(E2). Comparison with tilted-axis cranking model predictions.

doi: 10.1103/PhysRevC.73.034313
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2006TH07      Phys.Rev. C 74, 034329 (2006)

P.Thakur, V.Kumar, A.K.Bhati, S.C.Bedi, R.P.Singh, R.K.Bhowmik, A.E.Stuchbery

Nuclear g-factor measurements of the 9/2- and 21/2- isomeric states in 173Ta

NUCLEAR REACTIONS 165Ho(12C, 4n), E=66 MeV; measured delayed Eγ, Iγ(θ, H, t). 173Ta deduced isomeric states g factors, configurations. Time-dependent perturbed angular distribution technique.

doi: 10.1103/PhysRevC.74.034329
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2005AD01      Eur.Phys.J. A 23, 61 (2005)

J.Adam, A.R.Balabekyan, V.S.Barashenkov, R.Brandt, V.M.Golovatyuk, V.G.Kalinnikov, K.Katovsky, M.I.Krivopustov, V.Kumar, H.Kumawat, R.Odoj, V.S.Pronskikh, A.A.Solnyshkin, V.I.Stegailov, V.M.Tsoupko-Sitnikov, W.Westmeier

Spallation neutron spectrum on a massive lead/paraffin target irradiated with 1 GeV protons

NUCLEAR REACTIONS 209Bi(n, 4n), (n, 5n), (n, 6n), (n, 7n), (n, 9n), 232Th(n, γ), 197Au(n, 2n), (n, 4n), (n, 6n), (n, 7n), (n, γ), 59Co(n, 2n), (n, 3n), (n, 4n), (n, 5n), (n, p), (n, 6n2p), 115In(n, 5n), (n, 6n), (n, 7n), E=spectrum; measured Eγ, Iγ; deduced reaction rates. Activation technique, spallation neutrons from 1 GeV proton beam, comparison with model predictions.

doi: 10.1140/epja/i2004-10031-y
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2005AD40      Kerntechnik 70, 127 (2005)

J.Adam, V.S.Barashenkov, S.Ganesan, S.Golovatiouk, S.K.Gupta, S.Kailas, M.I.Krivopustov, V.Kumar, H.Kumawat, H.S.Palsania, V.Pronskikh, M.Sharma, V.M.Tsoupko-Sitnikov, N.Vladimirova, H.Westmeier, W.Westmeier

Measurement of the neutron fluence on the spallation source at Dubna

NUCLEAR REACTIONS 232Th, 197Au, 209Bi, 59Co, 115In, 181Ta(n, γ), (n, X), E<1 GeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, neutron fluence, σ. Comparison with the CASCADE code predictions.

doi: 10.3139/124.100234
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2005KU40      Eur.Phys.J. A 26, 311 (2005)

V.Kumar, P.Thakur, A.K.Bhati, R.P.Singh, R.K.Bhowmik

Nuclear quadrupole moments of 5/2- and 9/2- states in 169Ta

NUCLEAR REACTIONS 159Tb(16O, 6nγ), E=104 MeV; measured delayed Eγ, Iγ(θ, H, t). 169Ta levels deduced quadrupole moments, T1/2, deformation parameters. Time-dependent perturbed angular correlation.

doi: 10.1140/epja/i2005-10182-3
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2003KU12      Eur.Phys.J. A 17, 153 (2003)

V.Kumar, P.Das, R.P.Singh, S.Muralithar, R.K.Bhowmik

Investigations of low- and high-spin states of 132La

NUCLEAR REACTIONS 122Sn(14N, 4n), E=60 MeV; measured Eγ, Iγ, γγ-coin. 132La deduced low- and high-spin levels, J, π, configurations.

doi: 10.1140/epja/i2002-10157-x
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2003KU20      Pramana 60, 469 (2003)

V.Kumar, H.Kumawat, U.Goel, V.S.Barashenkov

Neutron spallation source and the Dubna Cascade Code

NUCLEAR REACTIONS W, Pb(p, nX), E=0.8-4 GeV; calculated neutron multiplicity, fragment isotopic yields. Comparison with data.

doi: 10.1007/BF02706153
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2001TH23      Hyperfine Interactions 136/137, 201 (2001)

P.Thakur, V.Kumar, A.K.Bhati, S.C.Bedi, R.P.Singh, S.Muralithar, R.K.Bhowmik

Nuclear g-Factor Measurement of the 9/2- Isomeric State in 171Ta

NUCLEAR REACTIONS 159Tb(16O, 4n), E=84 MeV; measured delayed Eγ, Iγ(θ, H, t). 171Ta level deduced g factor. Time-dependent perturbed angular correlation.

doi: 10.1023/A:1020580215495
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1996KU04      Int.J.Mod.Phys. E5, 217 (1996)

V.Kumar, B.Singh, H.S.Palsania, K.B.Bhalla, S.Lokanathan, S.K.Badyal, N.K.Rao, P.Bharti

On the Compression and Multifragmentation of Nuclear Matter at High Energies

NUCLEAR REACTIONS Ag, Br(139La, X), E=0.34-0.92 GeV/nucleon; Ag, Br(84Kr, X), E=1.4 GeV/nucleon; analyzed data; deduced nuclear compression, density quantification related features.

doi: 10.1142/S0218301396000104
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1996SI26      Appl.Radiat.Isot. 47, 697 (1996)

K.Singh, R.Rani, V.Kumar, Kawaldeep

Energy Absorption Coefficients for 662 keV γ-Rays in Some Compounds

doi: 10.1016/0969-8043(95)00286-3
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1995KU32      Appl.Radiat.Isot. 46, 875 (1995)

V.Kumar, Rama Rani, Kawaldeep, K.Singh

Study of Some Nuclear Parameters in Decay of 131Ba

RADIOACTIVITY 131Ba(EC); measured Eγ, Iγ. 131Cs level deduced K-capture probabilities, branching ratios, K-shell ICC.

doi: 10.1016/0969-8043(95)00174-C
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1995KU34      J.Radioanal.Nucl.Chem. 189, 3 (1995)

V.Kumar, Kawaldeep, K.Singh

The Decay of 153Gd

RADIOACTIVITY 153Gd(EC); measured Eγ, Iγ, I X-ray, E X-ray, relative absolute intensities; deduced K-capture probability, Q(EC). 153Eu levels deduced electron capture intensities. Sum peak method calculations.

doi: 10.1007/BF02040175
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1994KU43      Appl.Radiat.Isot. 45, 875 (1994)

V.Kumar, Kawaldeep, K.Singh

K-Electron Capture Probability to 165 keV Level in the Decay of 139Ce

RADIOACTIVITY 139Ce(EC); measured Iγ/I(K X-ray); calculated K-electron capture probability. 139Ce, 139La deduced mass difference.

doi: 10.1016/0969-8043(94)90218-6
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1993KA30      J.Phys.Soc.Jpn. 62, 901 (1993)

Kawaldeep, V.Kumar, K.S.Dhillon, K.Singh

K-Capture Probabilities to the Excited States of 152Sm in the Decay of 152Eu

RADIOACTIVITY 152Eu(β-), (β+), (EC); measured Eγ, Iγ, γ(K X-ray)-sum coincidence. 152Sm levels deduced K-capture probabilities.


1993SI30      Pramana 41, 535 (1993)

B.Singh, H.S.Palsania, V.Kumar, K.B.Bhalla, S.Lokanathan

Collective Bounce-Off Phenomenon in 139La + Ag(Br) Reaction at 1.1 A GeV Energy

NUCLEAR REACTIONS Ag, Br(139La, X), E=1.1 GeV/nucleon; measured target, projectile fragment flow angles, principal vectors' azimuthal angles difference; deduced fragment emission differences' characteristics.

doi: 10.1007/BF02875102
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