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NSR database version of May 24, 2024.

Search: Author = S.Dar

Found 9 matches.

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2024DA06      Phys.Lett. B 851, 138565 (2024)

Sh. Dar, S.Bhattacharyya, S.Chakraborty, S.Jehangir, S.Bhattacharya, G.H.Bhat, J.A.Sheikh, N.Rather, S.S.Nayak, S.Das, S.Basu, G.Mukherjee, S.Nandi, R.Banik, S.Basak, C.Bhattacharya, S.Chattopadhyay, S.Das Gupta, A.Karmakar, S.S.Ghugre, D.Kumar, D.Mondal, S.Mukhopadhyay, D.Pandit, S.Rajbanshi, R.Raut

Coexistence of low-K oblate and high-K prolate g9/2 proton-hole bands in 115Sb

NUCLEAR REACTIONS 115In(α, 4n), E=52 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, partial level scheme, positive parity sequence transitions, low-K decoupled band. Comparison with the frameworks of the projected shell model and the total Routhian surface calculations. The Indian National Gamma Array (INGA), the K-130 Cyclotron at Variable Energy Cyclotron Centre (VECC), Kolkata, India.

doi: 10.1016/j.physletb.2024.138565
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2024MU01      J.Radioanal.Nucl.Chem. 333, 1531 (2024)

G.Mukherjee, S.S.Nayak, J.Datta, S.Dasgupta, A.Choudhury, A.Behera, S.Chakraborty, Sh.Dar, S.Das, S.Basu, S.Pal, S.Bhattacharyya

Beta decay study of 126Sb and 126mSb

RADIOACTIVITY 126Sb(IT), (β-) [from 124Sn(α, np), E=27.5 MeV]; measured decay products, Eγ, Iγ; deduced γ-ray energies, J, π, partial level scheme, T1/2, σ. Comparison with available data, PACE-4 calculations. Discrete Gamma Spectroscopy (DGS) and Total Absorption Gamma Spectroscopy (TAGS). The K-130 cyclotron at VECC, Kolkata, India.

doi: 10.1007/s10967-023-09110-0
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2023BA36      Eur.Phys.J. A 59, 229 (2023)

S.Basu, G.Mukherjee, S.Nandi, S.S.Nayak, S.Bhattacharyya, S.Bhattacharya, S.Dar, S.Das, S.Basak, D.Kumar, D.Paul, K.Banerjee, P.Roy, S.Manna, S.Kundu, T.K.Rana, R.Pandey, S.Chatterjee, R.Raut, S.S.Ghugre, S.Samanta, R.Banik, A.Karmakar, S.Chattopadhyay, S.Das Gupta, P.Pallav, S.Rajbanshi, S.Ali, H.Pai

Revealing new structures in odd-odd 54Mn nucleus

NUCLEAR REACTIONS 55Mn(α, nα)54Mn, E=34 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and relative intensities, J, π, partial level scheme, σ, the directional correlation from oriented states ratio, the polarization asymmetry. Comparison with shell model calculations. The K-130 cyclotron at VECC, Kolkata.

doi: 10.1140/epja/s10050-023-01147-9
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2023CH27      Phys.Rev. C 107, 064318 (2023)

S.Chakraborty, S.Bhattacharyya, R.Banik, S.Bhattacharya, G.Mukherjee, C.Bhattacharya, S.Biswas, S.Rajbanshi, S.Dar, S.Nandi, S.Ali, S.Chatterjee, S.Das, S.Das Gupta, S.S.Ghugre, A.Goswami, A.Lemasson, D.Mondal, S.Mukhopadhyay, A.Navin, H.Pai, S.Pal, D.Pandit, R.Raut, P.Ray, M.Rejmund, S.Samanta

Search for the origin of wobbling motion in the A ≈ 130 region: The case of 131Xe

NUCLEAR REACTIONS 130Te(α, 3nγ), E=38 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). 131Xe; deduced levels, J, π, δ, mixing ratios, polarization asymmetries, γ-rays deexcitation from the oriented states (DCO) ratio, intruder νh11/2 band structure, rotational bands, yrast bands, signature splittings, high-spin states. Comparison to triaxial particle rotor model (TPRM) and triaxial projected shell model (TPSM) calculations. Systematics of the bands structure, signature splittings - 127Xe, 131Xe, 133Ba, 135Ce. No experimental signatures of the wobbling excitation were found in the study. Seven Compton-suppressed clover HPGe detectors of the Indian National Gamma Array (INGA) at K-130 cyclotron of the Variable Energy Cyclotron Centre (VECC, Kolkata).

doi: 10.1103/PhysRevC.107.064318
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2022DA05      Nucl.Phys. A1019, 122382 (2022)

S.Dar, S.Bhattacharya, S.Bhattacharyya, R.Banik, S.Nandi, G.Mukherjee, S.Rajbanshi, S.Das Gupta, S.Ali, S.Chakraborty, S.Chatterjee, S.Das, A.Dhal, S.S.Ghugre, A.Goswami, D.Mondal, S.Mukhopadhyay, H.Pai, S.Pal, D.Pandit, R.Raut, P.Ray, S.Samanta

Magnetic rotational band in 116Sb

NUCLEAR REACTIONS 115In(α, 3n), E=40 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, J, π, level scheme, multipolarities, B(M1)/B(E2), yrast rotational bands. Comparison with Magnetic Rotation (MR) under the framework of Semi-Classical Model (SCM) and Shears mechanism with Principal Axis Cranking (SPAC) formalism.

doi: 10.1016/j.nuclphysa.2022.122382
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2022NA16      Phys.Rev. C 105, 034336 (2022)

S.Nandi, G.Mukherjee, A.Dhal, R.Banik, S.Bhattacharya, S.Basu, S.Dar, S.Bhattacharyya, C.Bhattacharya, S.Kundu, D.Paul, S.Rajbanshi, S.Chatterjee, S.Das, S.Samanta, R.Raut, S.S.Ghugre, H.Pai, S.Ali, S.Biswas, A.Goswami

Different manifestations of triaxial shapes of the positive and negative parity bands in 187Os

NUCLEAR REACTIONS 186W(α, 3n), E=36 MeV; measured Eγ, Iγ, γγ(θ)(DCO), gγ∓coin. 187Os; deduced high-spin levels J, π, multipolarity, band structures, configurations, alignments, triaxial shape; calculated total Routhian surface (TRS) contours in (β2, γ) plane (Nilsson-Strutinsky formalism). Systematics of bandhead energies, momentum alignments and energy staggering of the rotational bands in 183,185,187Os, 183W. Indian National Gamma Array (INGA) at K-130 cyclotron of Variable Energy Cyclotron Centre, Kolkata (VECC).

doi: 10.1103/PhysRevC.105.034336
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2022SA15      Phys.Rev. C 105, 044304 (2022)

Y.Sapkota, R.Rahaman, A.Bisoi, A.Adhikari, A.Gupta, A.Das, H.Ghosh, S.Sarkar, D.Pramanik, S.Das, S.Sharma, S.Ray, S.Rajbanshi, S.Dar, S.Nandi, S.Bhattacharya, T.Bhattacharjee, G.Mukherjee, S.Bhattacharyya, S.Samanta, S.Das, S.Chatterjee, R.Raut, S.S.Ghugre

Structural evolution and K mixing in 49V

NUCLEAR REACTIONS 48Ti(α, 2np), E=48 MeV; measured Eγ, Iγ, γγ-coin, γ(θ). 49V; deduced levels, J, π, branching ratios, δ, DCO-ratios, B(M&1), B(E2), T1/2 of several high-spin states, neutron and proton single-parti&&cle states occupation numbers, negative-parity bands structure; calculated leve total Routhian surface (TRS) plots in (β2, γ) plane, single-particle proton and neutron energies in a rotating frame. 50Cr; calculated levels, J, π, spectroscopic factors. Lifetimes of the levels extracted with line-shape analysis of Doppler-shifted spectra. Comparison of experimental results to large basis shell model (LBSM) calculations with KB3GPN effective interaction. Indian National Gamma Array (INGA) at K-130 cyclotron of Variable Energy Cyclotron Centre, Kolkata (VECC).

doi: 10.1103/PhysRevC.105.044304
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2020BA20      Phys.Rev. C 101, 044306 (2020)

R.Banik, S.Bhattacharyya, S.Biswas, S.Bhattacharya, G.Mukherjee, S.Rajbanshi, S.Dar, S.Nandi, S.Ali, S.Chatterjee, S.Das, S.Das Gupta, S.S.Ghugre, A.Goswami, A.Lemasson, D.Mondal, S.Mukhopadhyay, H.Pai, S.Pal, D.Pandit, R.Raut, P.Ray, M.Rejmund, S.Samanta

Revealing multiple band structures in 131Xe from α-induced reactions

NUCLEAR REACTIONS 130Te(α, 3n), E=38 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array of seven Compton suppressed clover HPGe detectors at VECC, Kolkata facility. 131Xe; deduced levels, J, π, multipolarities, band structures, configurations, alignments, staggering parameter, triaxial shape; calculated total Routhian surfaces using Strutinski shell correction method. Systematics of low-lying level energies and staggering parameters in 125,127,129,131,133,135Xe, 133Ba, 135Ce.

doi: 10.1103/PhysRevC.101.044306
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2020NA27      Phys.Rev.Lett. 25, 132501 (2020)

S.Nandi, G.Mukherjee, Q.B.Chen, S.Frauendorf, R.Banik, S.Bhattacharya, S.Dar, S.Bhattacharyya, C.Bhattacharya, S.Chatterjee, S.Das, S.Samanta, R.Raut, S.S.Ghugre, S.Rajbanshi, S.Ali, H.Pai, M.A.Asgar, S.Das Gupta, P.Chowdhury, A.Goswami

First Observation of Multiple Transverse Wobbling Bands of Different Kinds in 183Au

NUCLEAR REACTIONS 169Tm(20Ne, 6n)183Au, E=146 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, two wobbling bands. Comparison with systematics.

doi: 10.1103/PhysRevLett.125.132501
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