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NSR database version of April 26, 2024.

Search: Author = K.Selvakumar

Found 9 matches.

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2020DA05      Phys.Rev. C 101, 044310 (2020)

A.Das, A.Bisoi, M.S.Sarkar, S.Sarkar, S.Ray, D.Pramanik, R.Kshetri, S.Nag, P.Singh, K.Selvakumar, A.Goswami, S.Saha, J.Sethi, T.Trivedi, B.S.Naidu, R.Donthi, V.Nanal, R.Palit

High spin states of ³⁷Ar

NUCLEAR REACTIONS ²⁷Al(¹²C, np), E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO and ADO), γγ(linear polarization) using the INGA array at the 14UD Pelletron accelerator of TIFR-Mumbai. ³⁷Ar; deduced high-spin levels, J, π, γ-branching ratios, multipolarities, mixing ratios, B(E1), B(M1), B(E2), B(M2). Comparison with large basis shell model calculations using OXBASH code with SDPFMW interaction, and with simple two-level mixing calculation. Comparison with previous experimental results.

NUCLEAR STRUCTURE ³⁷Ar; calculated levels, J, π, γ-branching ratios, wave functions amplitudes and partitions for the positive- and negative-parity states, B(E1), B(M1), B(E2), B(M2), level half-lives, 0p-0h configuration mixing in yrast levels. Large basis shell model calculations using OXBASH code with SDPFMW interaction, and simple two-level mixing calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.044310
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2020RA14      Phys.Rev. C 102, 024315 (2020)

R.Rahaman, A.Bisoi, Y.Sapkota, A.Adhikari, A.Das, S.Sarkar, M.S.Sarkar, A.Goswami, S.Ray, M.R.Basu, D.Kanjilal, S.Nag, K.Selvakumar, N.Madhavan, S.Muralithar, R.K.Bhowmik

Spectroscopic study of ³⁸K above the 31.67 μs isomer

NUCLEAR REACTIONS ¹²C(²⁸Si, np)³⁸K, E=110 MeV; measured Eγ, Iγ, γγ(θ)(DCO and ADO), γγ(linear polarization) using the INGA array at 15UD Pelletron accelerator of IUAC-New Delhi. ³⁸K; deduced high-spin levels above the 31.67-μs isomer, J, π, multipolarities, mixing ratios. ³⁵Cl; measured γγ(θ)(DCO and ADO ratios) for six γ rays. Comparison with large-basis shell-model calculations using the code OXBASH.

NUCLEAR STRUCTURE ³⁸K; calculated levels, J, π, B(M1), B(E2), B(E3), spectroscopic factors, structure of the wave functions for excited states using large-basis shell-model calculations using the code OXBASH with different particle restrictions in sd- and pf -shell orbitals. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.024315
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015SE17      Phys.Rev. C 92, 064307 (2015)

K.Selvakumar, A.K.Singh, C.Ghosh, P.Singh, A.Goswami, R.Raut, A.Mukherjee, U.Datta, P.Datta, S.Roy, G.Gangopadhyay, S.Bhowal, S.Muralithar, R.Kumar, R.P.Singh, M.K.Raju

Evidence for octupole correlation and chiral symmetry breaking in ¹²⁴Cs

NUCLEAR REACTIONS ⁹⁶Zr(³²S, 3np), E=140 MeV; measured Eγ, Iγ, γγ-coin, branching ratios, level half-lives by DSAM using INGA array at Pelletron accelerator at IUAC-New Delhi. ¹²⁴Cs; deduced high-spin levels, J, π, bands, B(E2), B(M1), B(E1), B(M1)/B(E2) ratios, chiral-partner bands. Comparison with particle-rotor model, and triaxial projected shell model calculations. Comparison of B(M1) and B(E2) rates, and energy separations in chiral partner bands with those in ^126,128Cs.

doi: 10.1103/PhysRevC.92.064307
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2014BI03      Phys.Rev. C 89, 024303 (2014)

A.Bisoi, M.S.Sarkar, S.Sarkar, S.Ray, D.Pramanik, R.Kshetri, S.Nag, K.Selvakumar, P.Singh, A.Goswami, S.Saha, J.Sethi, T.Trivedi, B.S.Naidu, R.Donthi, V.Nanal, R.Palit

High spin spectroscopy in ³⁴Cl

NUCLEAR REACTIONS ²⁷Al(¹²C, nα), E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), level half-lives by DSAM using INGA array at TIFR accelerator facility. ³⁴Cl; deduced high-spin levels, J, π, multipolarity, mixing ratio, B(E2). Comparison with large-basis shell-model calculations.

NUCLEAR STRUCTURE ³⁴Cl; calculated levels, J, π, wave functions, γ-branching ratios, B(M1), B(E2), B(M2) using large-basis shell-model (LBSM) calculations for different truncation schemes. OXBASH computer code. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.024303
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Data from this article have been entered in the XUNDL database. For more information, click here.

2014BI16      Phys.Rev. C 90, 024328 (2014)

A.Bisoi, M.S.Sarkar, S.Sarkar, S.Ray, D.Pramanik, R.Kshetri, S.Nag, K.Selvakumar, P.Singh, A.Goswami, S.Saha, J.Sethi, T.Trivedi, B.S.Naidu, R.Donthi, V.Nanal, R.Palit

Collective excitations in ³³S

NUCLEAR REACTIONS ²⁷Al(¹²C, npα)³³S, E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), level half-lives by DSAM using INGA array at TIFR Pelletron facility. ³³S; deduced levels, J, π, branching ratios, multipolarity, mixing ratio, B(M1), B(E1), B(E2), configurations. Comparison with large-scale shell model calculations.

NUCLEAR STRUCTURE ³³S; calculated levels, J, π, configurations, wave functions, B(E1), B(M1), B(E2), alignment plot using large-basis shell model approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.024328
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Data from this article have been entered in the XUNDL database. For more information, click here.

2013BI10      Phys.Rev. C 88, 034303 (2013)

A.Bisoi, M.S.Sarkar, S.Sarkar, S.Ray, M.R.Basu, D.Kanjilal, S.Nag, K.Selvakumar, A.Goswami, N.Madhavan, S.Muralithar, R.K.Bhowmik

Superdeformation and α-cluster structure in ³⁵Cl

NUCLEAR REACTIONS ¹²C(²⁸Si, pα)³⁵Cl, E=110 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), level half-lives by DSAM using INGA array at IUAC, Delhi facility. ³⁵Cl; deduced high-spin levels, J, π, multipolarity, superdeformed band, B(E2), B(E1), configuration, average transition quadrupole moment and deformation parameter for SD band, alignment plot. Comparison with large-scale shell model calculations. Correlation of theoretical spectroscopic factors for SD band members in ³⁵Cl with those of ³⁶Ar.

doi: 10.1103/PhysRevC.88.034303
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2013NA37      Eur.Phys.J. A 49, 145 (2013)

S.Nag, P.Singh, K.Selvakumar, A.K.Singh, A.Bisoi, A.Goswami, S.Bhattacharya, S.Kumar, K.Singh, J.Sethi, S.Saha, T.Trivedi, S.V.Jadhav, R.Donthi, B.S.Naidu, R.Palit

Non-collective states in ¹²²Te

NUCLEAR REACTIONS ¹¹⁶Cd(¹¹B, 4np), E=65 MeV; measured in-beam Eγ, Iγ(θ), γγ-coin, γ linear polarization using Compton-suppressed clover detectors of INGA array. ¹²²Te deduced levels, J, π, γ transitions, transition multipolarity, γ-ray asymmetry parameter from polarization; calculated levels, J, π using shell model with SM1, SM2, SM3 interactions.

doi: 10.1140/epja/i2013-13145-1
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2013SE14      Phys.Rev. C 88, 024313 (2013)

K.Selvakumar, A.K.Singh, S.Das, P.Singh, S.Nag, A.Gowsami, R.Raut, A.Mukherjee, U.Datta Pramanik, P.Dutta, S.Roy, G.Gangopadhyay, S.Bhowal, S.Muralithar, R.Kumar, R.P.Singh, M.K.Raju, T.Reddy

Shape evolution in ¹²³Cs and ¹²⁴Ba nuclei

NUCLEAR REACTIONS ⁹⁶Zr(³²S, 4np), (³²S, 4n), E=140 MeV; measured Eγ, Iγ, level half-lives by DSAM using INGA array at IUAC facility. ¹²³Cs, ¹²⁴Ba; deduced high-spin levels, transition quadrupole moments, deformation parameters, shape change from prolate to triaxial. Comparison with cranked shell model calculations.

doi: 10.1103/PhysRevC.88.024313
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2012SI09      Phys.Rev. C 85, 054311 (2012)

P.Singh, S.Nag, K.Selvakumar, A.K.Singh, I.Ragnarsson, A.Bisoi, A.Goswami, S.Bhattacharya, S.Kumar, K.Singh, J.Sethi, S.Saha, T.Trivedi, S.V.Jadhav, R.Donthi, B.S.Naidu, R.Palit

High-spin spectroscopy of ¹²²I

NUCLEAR REACTIONS ¹¹⁶Cd(¹¹B, 5n), E=65 MeV; measured Eγ, Iγ, γγ-coin, angular distribution ratios, γγ(linear pol) using INGA array at TIFR, Mumbai facility. ¹²²I; deduced high-spin levels, J, π, bands, multipolarity, configurations, band-crossing frequencies, alignment plots, signature splitting, and B(M1)/B(E2) ratios; calculated total energy surface contours in β-γ plane. Cranked Nilsson-Strutinsky calculations.

doi: 10.1103/PhysRevC.85.054311
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Data from this article have been entered in the XUNDL database. For more information, click here.