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NSR database version of April 11, 2024.

Search: Author = S.Bhattacharya

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2024AJ01      Phys.Rev. C 109, 014305 (2024)

S.Ajayi, V.Tripathi, E.Rubino, S.Bhattacharya, L.T.Baby, R.S.Lubna, C.Benetti, C.Wibisono, M.B.Wheeler, S.L.Tabor, Y.Utsuno, N.Shimizu, J.M.Allmond

Observation of collective modes of excitations in ⁵⁹Co, ⁵⁹Ni, and ⁶¹Co and the influence of the g_9/2 orbital

doi: 10.1103/PhysRevC.109.014305
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2024DA02      Phys.Rev. C 109, 014322 (2024)

S.Das, S.Bhattacharyya, S.Bhattacharya, S.Chakraborty, S.Shukla, P.C.Srivastava, R.Banik, S.Nandi, G.Mukherjee, I.Bala, S.S.Bhattacharjee, S.Das Gupta, A.Dhal, D.Mondal, S.Muralithar, R.Raut, A.Sharma, R.P.Singh, V.Srivastava

High-spin level structure of ²⁰⁹Rn

doi: 10.1103/PhysRevC.109.014322
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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 g_9/2 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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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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2023BH01      Europhys.Lett. 142, 14002 (2023)

S.Bhattacharyya, E.Firu, A.T.Neagu

An outlook to centrality dependence of event-by-event fluctuations of maximum pseudo-rapidity gap

doi: 10.1209/0295-5075/acc7f2
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2023BH02      Phys.Rev. C 107, 054311 (2023)

S.Bhattacharya, V.Tripathi, E.Rubino, S.Ajayi, L.T.Baby, C.Benetti, R.S.Lubna, S.L.Tabor, J.Doring, Y.Utsuno, N.Shimizu, J.M.Allmond, G.Mukherjee

Coexistence of single-particle and collective excitation in ⁶¹Ni

NUCLEAR REACTIONS ⁵⁰Ti(¹⁴C, 3n)⁶¹Ni, E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using a Compton-suppressed six clover detectors and three single-crystal HPGe detectors at the Superconducting Accelerator Facility at FSU. ⁶¹Ni; deduced high-spin levels, J, π, multipolarities, bands, magnetic rotational (shears) bands. Comparison with semiclassical model (SCM) for shears bands, and shell-model calculations for other bands.

NUCLEAR STRUCTURE ⁶¹Ni; calculated high-spin levels, J, π, occupation number for different orbitals, aligned angular momenta of bands using shell model with GXPF1Br+VMU (modified) interaction. Systematics of bands in ^59,61,63Ni, ⁵⁹Fe.

doi: 10.1103/PhysRevC.107.054311
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2023BH05      Phys.Rev. C 108, 024312 (2023)

Soumi.Bhattacharya, V.Tripathi, S.L.Tabor, A.Volya, P.C.Bender, C.Benetti, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, K.Childers, B.R.Clark, B.P.Crider, J.T.Harke, R.Jain, S.N.Liddick, R.S.Lubna, S.Luitel, B.Longfellow, M.J.Mogannam, T.H.Ogunbeku, J.Perello, A.L.Richard, E.Rubino, S.Saha, O.A.Shehu, R.Unz, Y.Xiao, Y.Zhu

β^- decay of neutron-rich ⁴⁵Cl located at the magic number N=28

RADIOACTIVITY ⁴⁵Cl(β^-), (β^-n)[from Be(⁴⁸Ca, X), E=140 MeV/nucleon]; measured Eγ, Iγ, Eβ, Iβ, βγ-coin; deduced T_1/2, Q values, β-feedings, branchings; calculated logft. ^44,45Ar; deduced levels, J, π. Comparison to shell-model calculations with FSU interaction. Systematics of the first excited 2⁺ state energy for the even-A Ar isotopes (from N= 20 to 30). Beta Counting System (BCS) equipped with a 986 υm thick pixelated (40 strips x 40 strips) DSSD detector, followed by SSCD and surrounded by 16 Clover detectors at NSCL.

NUCLEAR STRUCTURE ^43,44,45Ar; calculated levels, J, π, B(M1), B(E2), proton and neutron occupation numbers. Shell-model calculations with FSU interaction. Comparison to experimental data.

doi: 10.1103/PhysRevC.108.024312
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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 νh_11/2 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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2023GR04      Phys.Rev.Lett. 130, 242501 (2023)

T.J.Gray, J.M.Allmond, Z.Xu, T.T.King, R.S.Lubna, H.L.Crawford, V.Tripathi, B.P.Crider, R.Grzywacz, S.N.Liddick, A.O.Macchiavelli, T.Miyagi, A.Poves, A.Andalib, E.Argo, C.Benetti, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, J.Chan, A.Chester, J.Christie, B.R.Clark, I.Cox, A.A.Doetsch, J.Dopfer, J.G.Duarte, P.Fallon, A.Frotscher, T.Gaballah, J.T.Harke, J.Heideman, H.Huegen, J.D.Holt, R.Jain, N.Kitamura, K.Kolos, F.G.Kondev, A.Laminack, B.Longfellow, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.Neupane, A.Nowicki, T.H.Ogunbeku, W.-J.Ong, C.Porzio, C.J.Prokop, B.C.Rasco, E.K.Ronning, E.Rubino, T.J.Ruland, K.P.Rykaczewski, L.Schaedig, D.Seweryniak, K.Siegl, M.Singh, A.E.Stuchbery, S.L.Tabor, T.L.Tang, T.Wheeler, J.A.Winger, J.L.Wood

Microsecond Isomer at the N=20 Island of Shape Inversion Observed at FRIB

RADIOACTIVITY ³²Na(IT), (β^-) [from ⁹Be(⁴⁸Ca, X), E=172.3 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced γ-ray energies, partial level scheme, isomeric T_1/2, B(E2), single-particle occupancies. Comparison with calculations. The Advanced Rare Isotope Separator (ARIS), the FRIB Decay Station initiator (FDSi).

doi: 10.1103/PhysRevLett.130.242501
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2023LU07      Phys.Rev. C 108, 014329 (2023)

R.S.Lubna, S.N.Liddick, T.H.Ogunbeku, A.Chester, J.M.Allmond, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, K.L.Childers, P.Chowdhury, J.Christie, B.R.Clark, R.M.Clark, I.Cox, H.L.Crawford, B.P.Crider, A.A.Doetsch, P.Fallon, A.Frotscher, T.Gaballah, T.J.Gray, R.Grzywacz, J.T.Harke, A.C.Hartley, R.Jain, T.T.King, N.Kitamura, K.Kolos, F.G.Kondev, E.Lamere, R.Lewis, B.Longfellow, S.Lyons, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.K.Neupane, W.-J.Ong, D.Perez-Loureiro, C.Porzio, C.J.Prokop, A.L.Richard, E.K.Ronning, E.Rubino, K.Rykaczewski, D.Seweryniak, K.Siegl, U.Silwal, M.Singh, D.P.Siwakoti, D.C.Smith, M.K.Smith, S.L.Tabor, T.L.Tang, V.Tripathi, A.Volya, T.Wheeler, Y.Xiao, Z.Xu

β decay of ³⁶Mg and ³⁶Al: Identification of a β-decaying isomer in ³⁶Al

RADIOACTIVITY ³⁶Mg, ³⁶Al(β^-)[from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon for experiment at NSCL and ⁹Be(⁴⁸Ca, X), E=172.3 MeV/nucleon for experiment at FRIB]; ³⁶Al, ^36mAl(β^-)[from ³⁶Mg(β^-); measured Eγ, Iγ; deduced T_1/2. ³⁶Al; deduced levels, J, π, newly-observed β-decaying isomer, T_1/2 of the isomer. ³⁶Si; deduced levels, J, π. Comparison to shell model calculations performed with the FSU interaction using code CoSMo. For experiment at NSCL - CeBr₃ based implantation detector with position-sensitive photomultiplier tube was surrounded by 16 segmented germanium detectors (SeGa) and 15 LaBr₃ detectors. For experiment at FRIB - YSO scintillator based implantation detector segmented into 48x48 pixels was surrounded by 11 HPGe clover detectors and LaBr₃ detectors from one side and the neutron detector array VANDLE from the other side.

doi: 10.1103/PhysRevC.108.014329
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Data from this article have been entered in the XUNDL database. For more information, click here.

2023MO15      Phys.Rev. C 107, 064320 (2023)

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

Investigation of the low- and medium-spin level structure in ⁷⁷As

NUCLEAR REACTIONS ⁷⁶Ge(α, 2np), E=40 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ). ⁷⁷As; deduced levels, J, π, δ, high-spin states, polarization asymmetries, γ-rays deexcitation from the oriented states (DCO) ratio, configurations, band crossing, kinematic and dynamic moments of inertia, neutron alignments, rotational and vibrational bands structure. Observed large signature splitting of the signature partner bands. Presented evidence for the possible onset of stapler like mechanism in the high-lying negative-parity dipole band. Comparison to shell-model (JUN45, jj44b interactions) and particle plus triaxial-rotor model (TPRM) calculations. Indian National Gamma Array (INGA) spectrometer comprising 6 Clover and 1 LEPS detectors at K-130 Cyclotron of the Variable Energy Cyclotron Centre (VECC, Kolkata).

doi: 10.1103/PhysRevC.107.064320
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Data from this article have been entered in the XUNDL database. For more information, click here.

2023MU10      Phys.Rev. C 107, 054310 (2023)

A.Mukherjee, S.Bhattacharya, T.Trivedi, S.Tiwari, R.P.Singh, S.Muralithar, Yashraj, K.Katre, R.Kumar, R.Palit, S.Chakraborty, S.Jehangir, N.Nazir, S.P.Rouoof, G.H.Bhat, J.A.Sheikh, N.Rather, R.Raut, S.S.Ghugre, S.Ali, S.Rajbanshi, S.Nag, S.S.Tiwary, A.Sharma, S.Kumar, S.Yadav, A.K.Jain

Evidence of transverse wobbling motion in ¹⁵¹Eu

NUCLEAR REACTIONS ¹⁴⁸Nd(⁷Li, 4n)¹⁵¹Eu, E=30 MeV; measured Eγ, Iγ, γγ-coin γγ(θ). ¹⁵¹Eu; deduced levels, J, π, high-spin states, directional correlation of oriented states (DCO) ratio, polarization asymmetries, mixing ratios, δ, rotational bands structure, B(E2_in)/B(E2_out), B(M1_in)/B(E2_out). Comparison to triaxial projected shell model calculations. Evidences of presence of transverse wobbling in ¹⁵¹Eu. Systematics of wobbling excitation energies for ¹⁵¹Eu, ¹³⁵Pr, ¹³³Ba, ¹⁸³Au, ¹⁸⁷Au, ¹³³La and ¹²⁷Xe. Indian National Gamma Array (INGA) consisting of 16 Compton suppressed clover detectors and 2 ancillary LEPS detectors at 15 UD pelletron (IUAC, New Delhi).

doi: 10.1103/PhysRevC.107.054310
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Data from this article have been entered in the XUNDL database. For more information, click here.

2023SE11      J.Phys.(London) G50, 075104 (2023)

E.Senapati, S.Mondal, S.Bhattacharya, d.Pandit, N.Dinh Dang, N.N.Anh, L.T.Quynh Huong, R.Santra, N.Quang Hung, B.Dey

Pairing phase transition in an odd-even hot ⁶⁹Zn nucleus

NUCLEAR STRUCTURE ⁶⁹Zn; analyzed available data; deduced pairing phase transition in an odd–even hot-rotating nucleus using the reported nuclear level density (NLD) data, which were experimentally extracted from the γ-gated particle spectra.

doi: 10.1088/1361-6471/acd2f1
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2022BH04      Phys.Rev. C 106, 044312 (2022)

S.Bhattacharya, T.Trivedi, A.Mukherjee, D.Negi, R.P.Singh, S.Muralithar, S.Jehangir, G.H.Bhat, N.Nazir, J.A.Sheikh, N.Rather, R.Palit, S.Nag, S.Rajbanshi, S.Chakraborty, S.Kumar, M.Kumar Raju, V.V.Parkar, D.Choudhury, R.Kumar, R.K.Bhowmik, S.C.Pancholi, A.K.Jain

Evidence for prolate-oblate shape coexistence in the odd-A ⁷³₃₅Br₃₈ nucleus

NUCLEAR REACTIONS ⁵⁰Cr(²⁸Si, pα)⁷³Br, E=90 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), ⁷³Br; deduced levels, J, π, high-spin states states, bands structure, δ, T_1/2 of 9/2⁺ excited state, polarization asymmetry, DCO and ADO ratios. Comparison to Projected shell model (PSM) calculations and other experimental data. Systematics of monopole transition strength in ⁷³Br, calculated from the semiempirical approach with neighboring Se, Br, and Kr. Evidences provided for the prolate-oblate shape coexistence at low excitation energy. INGA array at IUAC, New Delhi.

doi: 10.1103/PhysRevC.106.044312
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2022CR03      Phys.Rev.Lett. 129, 212501 (2022)

H.L.Crawford, V.Tripathi, J.M.Allmond, B.P.Crider, R.Grzywacz, S.N.Liddick, A.Andalib, E.Argo, C.Benetti, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, J.Chan, A.Chester, J.Christie, B.R.Clark, I.Cox, A.A.Doetsch, J.Dopfer, J.G.Duarte, P.Fallon, A.Frotscher, T.Gaballah, T.J.Gray, J.T.Harke, J.Heideman, H.Heugen, R.Jain, T.T.King, N.Kitamura, K.Kolos, F.G.Kondev, A.Laminack, B.Longfellow, R.S.Lubna, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.Neupane, A.Nowicki, T.H.Ogunbeku, W.-J.Ong, C.Porzio, C.J.Prokop, B.C.Rasco, E.K.Ronning, E.Rubino, T.J.Ruland, K.P.Rykaczewski, L.Schaedig, D.Seweryniak, K.Siegl, M.Singh, S.L.Tabor, T.L.Tang, T.Wheeler, J.A.Winger, Z.Xu

Crossing N = 28 Toward the Neutron Drip Line: First Measurement of Half-Lives at FRIB

RADIOACTIVITY ^44,45P, ^42,43Si, ^39,40,41Al, ^36,37,38Mg, ³⁵Na, ³²Ne, ²⁹F(β^-), (β^-n), (β^-2n) [from ⁹Be(⁴⁸Ca, X), E=172.3 MeV/nucleon]; measured decay products, Eβ, Iβ, En, In; deduced T_1/2. Comparison with the latest quasiparticle random phase approximation and shell-model calculations and available data. The Facility for Rare Isotope Beams (FRIB) with the FRIB decay station initiator.

doi: 10.1103/PhysRevLett.129.212501
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Data from this article have been entered in the XUNDL database. For more information, click here.

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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2022DE09      Phys.Rev. C 105, 044307 (2022)

P.Dey, D.Negi, R.Palit, P.C.Srivastava, Md.S.R.Laskar, B.Das, F.S.Babra, S.Bhattacharya, B.Das, K.Rojeeta Devi, R.Gala, U.Garg, S.S.Ghugre, E.Ideguchi, S.Kumar, A.Kundu, G.Mukherjee, S.Muralithar, S.Nag, S.Nandi, Neelam, M.K.Raja, R.Raut, R.Santra, A.Sharma, S.Sihotra, A.K.Singh, R.P.Singh, T.Trivedi

Experimental investigation of high-spin states in ⁹⁰Zr

NUCLEAR REACTIONS ⁸²Se(¹³C, 5n), E=60 MeV; measured Eγ, Iγ, γγγ-coin, γ(θ). ⁹⁰Zr; deduced levels, J, π, DCO ratios, polarization asymmetry, multipolarity, high-spin states, bands structure, configurations. Comparison to shell-model calculations with the GWBXG effective interaction. Indian National Gamma Array (INGA) at TIFR-BARC Pelletron Linac Facility.

doi: 10.1103/PhysRevC.105.044307
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Data from this article have been entered in the XUNDL database. For more information, click here.

2022FA07      Phys.Rev. C 106, 024605 (2022)

Q.Fable, A.Chbihi, M.Boisjoli, J.D.Frankland, A.Le Fevre, N.Le Neindre, P.Marini, G.Verde, G.Ademard, L.Bardelli, C.Bhattacharya, S.Bhattacharya, E.Bonnet, B.Borderie, R.Bougault, G.Casini, M.La Commara, R.Dayras, J.E.Ducret, F.Farget, E.Galichet, T.Genard, F.Gramegna, D.Gruyer, M.Henri, S.Kundu, J.Lemarie, O.Lopez, J.Lukasik, L.Manduci, J.Moisan, G.Mukherjee, P.Napolitani, A.Olmi, M.Parlog, S.Piantelli, G.Poggi, A.Rebillard-Soulie, R.Roy, B.Sorgunlu, S.Velardita, E.Vient, M.Vigilante, J.P.Wieleczko

Experimental study of the ^{40, 48}Ca + ^{40, 48}Ca reactions at 35 MeV/nucleon

NUCLEAR REACTIONS ^40,48Ca(⁴⁰Ca, X), (⁴⁸Ca, X), E=35 MeV/nucleon; measured reaction products; deduced average neutron excess of the fragments, average forward-emitted multiplicities, average neutron multiplicities, angular distributions of quasiprojectile fragments, mass and isotopic fission fragments distributions, average excitation energy per nucleon. Comparison to simulations performed in the framework of the antisymmetrized molecular dynamics (AMD) model coupled to the statistical decay code GEMINI++ as afterburner. 4π charged particle multidetector array INDRA and VAMOS spectrometer at GANIL.

doi: 10.1103/PhysRevC.106.024605
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2022MA08      Phys.Rev. C 105, L021603 (2022)

S.Manna, C.Bhattacharya, T.K.Rana, S.Kundu, R.Pandey, A.Sen, T.K.Ghosh, P.Roy, G.Mukherjee, S.Mukhopadhyay, K.Banerjee, J.K.Meena, P.Karmakar, D.Paul, S.Dalal, J.K.Sahoo, R.M.Saha, A.K.Saha, S.Bhattacharya

Signature of fusion suppression in complex fragment emission

NUCLEAR REACTIONS ⁹Be(²⁰Ne, ⁶Li), (²⁰Ne, ⁷Li), (²⁰Ne, ⁷Be), (²⁰Ne, ⁹Be) E=157.2-193 MeV; ¹²C(¹⁶O, ⁶Li), (¹⁶O, ⁷Li), (¹⁶O, ⁷Be), (¹⁶O, ⁹Be), E=135.9-161.1 MeV; measured reaction products; deduced σ(θ), σ(E). Comparison to CASCADE calculations. ChAKRA array of DSSD detectors at Variable Energy Cyclotron Centre, Kolkata.

doi: 10.1103/PhysRevC.105.L021603
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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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2022MO21      Phys.Rev. C 105, 054602 (2022)

D.Mondal, S.Mukhopadhyay, D.Pandit, S.Pal, P.Roy, B.Dey, S.Bhattacharya, A.De, S.Bhattacharya, K.Banerjee, S.Kundu, S.Manna, T.K.Rana, R.Pandey, S.R.Banerjee, C.Bhattacharya

Production of high-energy γ rays in proton- and α-induced reactions

NUCLEAR REACTIONS ¹¹⁵In(p, γ), E=12; ¹¹²Sn(α, γ), E=28 MEV;;measured Eγ, Iγ; deduced high-energy γ-ray spectrum, giant dipole resonance structure . Comparison to statistical model calculations (TALYS-1.95). Large Area Modular BaF₂ Detector Array (LAMBDA) at Variable Energy Cyclotron Centre (VECC), Kolkatta, India

doi: 10.1103/PhysRevC.105.054602
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2022MO29      Int.J.Mod.Phys. E31, 2250064 (2022)

S.Mondal, P.Das, E.Senapati, D.Pandit, B.Dey, A.De, S.Bhattacharya

Analysis of cross-section, S-factor and thermonuclear reaction rate of ⁸Li(α, n)¹¹B and ¹⁴N(p, γ)¹⁵O using TALYS and EMPIRE nuclear reaction codes

NUCLEAR REACTIONS ⁸Li(α, n), E(cm)<4.5 MeV; ¹⁴N(p, γ), E(cm)<1 MeV; analyzed available data; calculated σ, S-factors using TALYS and EMPIRE codes.

doi: 10.1142/S0218301322500641
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2022MU03      Phys.Rev. C 105, 014322 (2022)

A.Mukherjee, S.Bhattacharya, T.Trivedi, R.P.Singh, S.Muralithar, D.Negi, R.Palit, S.Nag, S.Rajbanshi, M.Kumar Raju, S.Kumar, D.Choudhury, R.Kumar, R.K.Bhowmik, S.C.Pancholi, A.K.Jain

Shape coexistence and octupole correlations in ⁷²Se

NUCLEAR REACTIONS ⁵⁰Cr(²⁸Si, 2pα)⁷²Se, E=90 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(θ)(ADO), γγ-linear polarization asymmetries using INGA array of 17 Compton-suppressed clover detectors at the 15UD Pelletron accelerator of IUAC, New Delhi. ⁷²Se; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, Kπ=0+ bands, γ-band, alignments, B(E1)/B(E2) ratios, octupole correlations, intrinsic dipole moment D₀ for the octupole band; calculated single-particle energy as a function of β₂ for fixed triaxiality and hexadecapole deformation parameters, single-particle proton and neutron energy levels; bands interpreted in terms of the total Routhian surface (TRS) calculations. Systematics of B(E1)/B(E2) ratios and D₀ values for ⁷²Se, ⁷³Br, ^114,116,117Xe, ¹²⁵Ba, and for energies of 3- states for ^{70,72,74,76,78,80,82}Se.

doi: 10.1103/PhysRevC.105.014322
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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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2022RA02      Nucl.Phys. A1018, 122375 (2022)

P.Ray, H.Pai, S.Ali, A.Mukherjee, S.Rajbanshi, S.Chakraborty, S.Bhattacharya, R.Banik, S.Nandi, S.Bhattacharyya, G.Mukherjee, C.Bhattacharya, G.Gangopadhyay, S.Samanta, S.Das, S.Chatterjee, R.Raut, S.S.Ghugre, P.C.Srivastava, S.Jehangir, B.Bhoy, N.Rather, G.H.Bhat, J.A.Sheikh, A.Goswami

Three-phonon multiplets in ¹¹⁶Sn

NUCLEAR REACTIONS ¹¹⁴Cd(α, 2n), E=34 MeV; measured reaction products, Eγ, Iγ, γγ-coin.; deduced γ-ray energies and intensities, J, π, level scheme, multipolarities, intruder configurations. Interacting Boson Model (IBM) and spherical shell model calculations. The Indian National Gamma Array (INGA).

doi: 10.1016/j.nuclphysa.2021.122375
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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), T_1/2 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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2022SE02      Phys.Rev. C 105, 014627 (2022)

A.Sen, T.K.Ghosh, E.M.Kozulin, I.M.Itkis, G.N.Knyazheva, K.V.Novikov, S.Bhattacharya, K.Banerjee, C.Bhattacharya

Quasifission in ^{84, 86}Kr-induced reactions populating superheavy elements

NUCLEAR REACTIONS ¹⁹⁸Pt(⁸⁴Kr, F), E(cm)/E(Bass)=1.14; ¹⁹⁸Pt(⁸⁶Kr, F), ¹⁹⁷Au(⁸⁶Kr, F), E(cm)/E(Bass)=1.12; measured binary reaction products in coincidence mode using the double-arm time-of-flight spectrometer CORSET, consisting of a compact start detector and a position-sensitive stop detector of microchannel plates at the U400 cyclotron Flerov laboratory of Nuclear Reactions, Dubna; deduced mass-energy distributions of fission-like events, mass-total kinetic energy (M-TKE) distributions above barrier energies, TKE distributions of the symmetric fragments. Comparison with two-center shell-model calculations, and with previous experimental results for other reaction systems. Relevance to influence of various entrance channel parameters and isospin differences on the quasifission dynamics process, leading to a more symmetric mass split distribution.

doi: 10.1103/PhysRevC.105.014627
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2022SH23      Phys.Lett. B 831, 137145 (2022)

R.Shil, K.Banerjee, P.Roy, J.Sadhukhan, T.K.Rana, G.Mukherjee, S.Kundu, T.K.Ghosh, S.Manna, A.Sen, R.Pandey, A.Chakraborty, D.Pandit, S.Mukhopadhyay, D.Mondal, D.Paul, C.Bhattacharya, S.Bhattacharya

Isospin dependence of nuclear level density at A ≈ 120 mass region

NUCLEAR REACTIONS ^112,116,124Sn(α, n)¹¹⁵Te/¹¹⁹Te/¹²⁷Te, E=26-44 MeV; measured reaction products, En, In; deduced neutron σ(θ, E), evaporation channels, σ(θ), nuclear level density. Comparison with the statistical model calculation including the isospin dependent and independent prescriptions of level density parameter.

doi: 10.1016/j.physletb.2022.137145
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2022TR03      Phys.Rev. C 106, 064314 (2022)

V.Tripathi, S.Bhattacharya, E.Rubino, C.Benetti, J.F.Perello, S.L.Tabor, S.N.Liddick, P.C.Bender, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, K.Childers, B.R.Clark, B.P.Crider, J.T.Harke, B.Longfellow, R.S.Lubna, S.Luitel, T.H.Ogunbeku, A.L.Richard, S.Saha, N.Shimizu, O.A.Shehu, Y.Utsuno, R.Unz, Y.Xiao, S.Yoshida, Y.Zhu

β^- decay of exotic P and S isotopes with neutron number near 28

RADIOACTIVITY ^42,43,44P, ^44,46S(β^-), (β^-n) [from Be(⁴⁸Ca, X), E=140 MeV/nucleon)]; ⁴¹S(β^-) [from ⁴²P(β^-n]; measured Iβ, Eγ, Iγ, βγ-coin, (implant)γ-coin; deduced T_1/2, logft, delayed neutron emission probabilities. ⁴²P; deduced J, π of the ground state. ^42,41S, ⁴¹Cl; deduced levels, J, π, transition intensities. The half-lives were extracted from the fitting of decay curves. Comparison to calculations performed with shell-model using SDPFSDG-MU interaction. Beta Counting System (BCS) - 40x40 DSSD as the implant and β detector, surrounded by a γ-array of 16 Clover detectors in close geometry (NSCL).

doi: 10.1103/PhysRevC.106.064314
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2021BH01      Phys.Rev. C 103, 014305 (2021)

S.Bhattacharya, D.Pandit, B.Dey, D.Mondal, S.Mukhopadhyay, S.Pal, A.De, S.R.Banerjee

Effect of high angular momentum on η/s of nuclear matter

NUCLEAR STRUCTURE ⁵⁹Cu, ^109,110Sn, ¹¹³Sb, ¹⁴⁴Sm, ¹⁵²Gd, ¹⁷⁶W, ¹⁹⁴Hg; calculated nuclear matter viscosity using experimental data available in literature for widths and temperatures of high angular momenta for giant dipole resonances (GDR) using critical temperature fluctuation model (CTFM), and Fermi liquid drop model (FLDM). Compared results from the two theoretical methods.

doi: 10.1103/PhysRevC.103.014305
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2021BH04      Phys.Rev. C 103, 024905 (2021)

S.Bhattacharyya, A.Jaiswal, S.Roy

Chemical freeze-out systematics of thermal model analysis using hadron yield ratios

doi: 10.1103/PhysRevC.103.024905
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2021BH07      Eur.Phys.J. A 57, 164 (2021)

S.Bhattacharyya

Multiplicity characteristics of the produced shower particles in backward direction-target and projectile dependence

doi: 10.1140/epja/s10050-021-00468-x
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2021BH13      Europhys.Lett. 135, 42001 (2021)

S.Bhattacharyya

Pseudo-rapidity fluctuations revisited on event-by-event basis: Dependence on centrality of collisions

NUCLEAR REACTIONS C, Ag(²²Ne, X), E=4.1 GeV/nucleon; C, Ag(²²Ne, X), E=4.5 GeV/nucleon; analyzed available data; deduced pseudo-rapidity fluctuations.

doi: 10.1209/0295-5075/ac202d
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2021KU10      Phys.Rev. C 103, 034315 (2021)

A.Kundu, Md.S.R.Laskar, R.Palit, R.Raut, S.Santra, N.Shimizu, T.Togashi, E.Ideguchi, H.Pai, S.Ali, F.S.Babra, R.Banik, S.Bhattacharya, S.Biswas, B.Das, P.Dey, R.Donthi, A.Goswami, S.Jadhav, G.Mukherjee, B.S.Naidu, S.Rajbanshi, L.P.Singh, H.P.Sharma, S.S.Tiwary, A.T.Vazhappilly

New lifetime measurement for the 2⁺₁ level in ¹¹²Sn by the Doppler-shift attenuation method

NUCLEAR REACTIONS ¹¹²Sn(³⁵Cl, ³⁵Cl'), E=195 MeV; measured Eγ, Iγ, γγ-coin, half-lives of the first 2+ and 3- states from Doppler broadening using INGA array at BARC-TIFR Pelletron LINAC Facility. ¹¹²Sn; deduced levels, J, π, B(E2), B(E1); calculated potential energy surface in (Q₂, Q₄) plane using Q-constrained Hartree-Fock method. Comparison with previous measurements, and with generalized seniority model (GSM) and state-of-the-art Monte Carlo shell model (MCSM) calculations. Systematics of B(E2) for the first 2+ states in A=112-124 Sn nuclei.

doi: 10.1103/PhysRevC.103.034315
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2021LA06      Phys.Rev. C 104, L011301 (2021)

Md.S.R.Laskar, R.Palit, E.Ideguchi, T.Inakura, S.N.Mishra, F.S.Babra, S.Bhattacharya, D.Choudhury, B.Das, B.Das, P.Dey, U.Garg, A.K.Jain, A.Kundu, D.Kumar, D.Negi, S.C.Pancholi, S.Rajbanshi, S.Sihotra

Enhanced B(E3) strength observed in ¹³⁷La

NUCLEAR REACTIONS ¹³⁰Te(¹¹B, 4n)¹³⁷La, E=40 MeV; measured Eγ, Iγ, γγ-coin, level half-life by γγ(t) using an array of 11 Compton-suppressed HPGe clover and 14 LaBr₃(Ce) detectors at the Pelletron Linac Facility of TIFR-Mumbai. ¹³⁷La; deduced levels, J, π, half-life of 1005, 11/2- level, B(E3), sudden increase of B(E3) strength at N=80. Comparison with random-phase approximation (RPA) calculations. Systematics of B(E3) strengths in ^129,133La and ^{132,134,136,138}Ba.

doi: 10.1103/PhysRevC.104.L011301
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2021MA77      Eur.Phys.J. A 57, 286 (2021)

S.Manna, T.K.Rana, C.Bhattacharya, S.Kundu, R.Pandey, K.Banerjee, P.Roy, A.Sen, T.K.Ghosh, G.Mukherjee, D.Mondal, M.M.Shaikh, J.K.Meena, P.Karmakar, D.Paul, K.Atreya, S.Basu, V.Srivastava, A.Chaudhuri, T.Roy, A.Asgar, A.Dey, A.Dhal, M.Sinha, J.K.Sahoo, A.K.Saha, R.M.Saha, S.Bhattacharya

Search for the Hoyle analogue state in ¹⁶O

NUCLEAR REACTIONS ¹⁶O, ¹²C(α, X), E=45 MeV; measured reaction products, Eα, Iα. ¹⁶O, ¹²C, ⁸Be; deduced σ, specific decay channels, lack of evidence for the Hoyle analogue state.

doi: 10.1140/epja/s10050-021-00592-8
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2021MU08      Phys.Rev. C 104, L031304 (2021)

S.Mukhopadhyay, P.Roy, D.Mondal, D.Pandit, S.Pal, B.Dey, S.Bhattacharya, A.De, T.K.Rana, S.Kundu, J.Sadhukhan, C.Bhattacharya, S.R.Banerjee

No signature of the saturation of giant dipole resonance width in medium-mass nuclei

NUCLEAR REACTIONS ⁵⁸Ni(¹⁶O, X)⁷⁴Kr^*, E=116, 140, 160 MeV; measured high-energy Eγ, Iγ, γγ-coin, E(n), I(n) using LAMBDA photon spectrometer with 49 large BaF₂ detectors, a 50-element low energy γ-multiplicity filter array, and two liquid-scintillator-based neutron detectors at the K130 Cyclotron facility of VECC-Kolkata. ⁷⁴Kr; deduced time-of-flight (TOF) spectra, angular momentum gated neutron spectra, energies and widths of giant-dipole resonances at the three incident energies. Comparison with statistical model CASCADE calculations, and other theoretical models. Systematics of GDR width with temperature for ⁷⁴Kr, ⁷⁶Kr, ⁸⁸Mo, ⁸⁶Mo, ⁹²Mo and ¹⁰⁰Mo.

doi: 10.1103/PhysRevC.104.L031304
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2021PA18      Phys.Lett. B 816, 136173 (2021)

D.Pandit, B.Dey, S.Bhattacharya, T.K.Rana, D.Mondal, S.Mukhopadhyay, S.Pal, A.De, P.Roy, K.Banerjee, S.Kundu, A.K.Sikdar, C.Bhattacharya, S.R.Banerjee

Puzzle of collective enhancement in the nuclear level density

NUCLEAR REACTIONS ¹⁶⁵Ho, ¹⁸¹Ta, ¹⁹⁷Au(α, X), E=28 MeV; measured reaction products, Eγ, Iγ. ¹⁶⁹Tm, ¹⁸⁵Re, ²⁰¹Tl; deduced giant dipole resonance, neutron and proton yields, enhancement factors, collective rotational enhancement in the nuclear level densities.

doi: 10.1016/j.physletb.2021.136173
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2021PA30      Phys.Rev. C 104, 024604 (2021)

D.Paul, A.Sen, T.K.Ghosh, Md.M.Shaikh, K.Atreya, R.Santra, S.Kundu, T.K.Rana, K.Banerjee, C.Bhattacharya, S.Bhattacharya, J.K.Meena, D.C.Biswas, B.N.Joshi, N.Kumar, G.K.Prajapati, Y.K.Gupta, K.Mahata, K.Ramachandran, S.Pal

Fission fragment mass and folding angle distributions in the reaction ⁹Be +²³⁸U

NUCLEAR REACTIONS ²³⁸U(⁹Be, F), E=37.5, 39, 42, 47 MeV pulsed beam from BARC-TIFR Pelletron facility in Mumbai; measured fission fragments, σ(E) using two position-sensitive multiwire proportional counters (MWPC) and time-of-flight (TOF) method; deduced folding angle distributions, yields, fission fragment mass distributions, σ(E)(exp)/σ(E)(theory), incomplete fusion fission (ICF) σ(E), half-mass distribution in the fission of the compound nucleus ²⁴⁷Cm at 47 MeV. Comparison with experimental results from ^6,7Li-induced reactions on actinide targets, and ²³⁸U(p, F), (α, F) and ²³²Th(¹²C, F) reactions. Comparison with semiempirical theoretical calculation using GEF code, and with macro-microscopic two-center shell model calculations, considering the admixture of incomplete fusion fission mechanism.

doi: 10.1103/PhysRevC.104.024604
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2021PA33      Phys.Lett. B 820, 136570 (2021)

S.K.Pandit, A.Shrivastava, K.Mahata, N.Keeley, V.V.Parkar, R.Palit, P.C.Rout, K.Ramachandran, A.Kumar, S.Bhattacharyya, V.Nanal, S.Biswas, S.Saha, J.Sethi, P.Singh, S.Kailas

Unraveling the reaction mechanism for large alpha production and incomplete fusion in reactions involving weakly bound stable nuclei

NUCLEAR REACTIONS ⁹³Nb(⁷Li, X)⁹⁴Mo/⁹⁵Mo/⁹⁶Mo, E=24 MeV; measured reaction products, Eγ, Iγ, Eα, Iα; deduced σ(θ, E). Comparison with DWBA calculations. BARC-TIFR Pelletron-Linac facility, the Indian National Gamma Array (INGA).

doi: 10.1016/j.physletb.2021.136570
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2021RA05      Phys.Rev. C 103, 034614 (2021)

T.K.Rana, S.Kundu, C.Bhattacharya, S.Manna, P.Roy, R.Pandey, A.Sen, T.K.Ghosh, G.Mukherjee, K.Banerjee, S.Mukhopadhyaya, D.Paul, M.M.Shaikh, S.Nandi, V.Srivastava, J.K.Sahoo, J.K.Meena, A.K.Saha, R.M.Saha, S.Dalal, S.Bhattacharya

Complex fragment emission in dissipative binary decay of ^{74, 76}Kr

NUCLEAR REACTIONS ⁵⁶Fe(²⁰Ne, X)⁶Li/⁷Li/⁷Be/⁹Be/¹⁰B/¹¹B/¹¹C/¹²C/¹³C/¹⁴C, E=147.5, 166.5 MeV; ⁵⁸Ni(¹⁶O, X)⁶Li/⁷Li/⁷Be/⁹Be/¹⁰B/¹¹B/¹¹C/¹²C/¹³C/¹⁴C, E=143.8, 161.6 MeV; measured emitted reaction products, two-dimensional particle identification spectra using two silicon strip detector ΔE-E telescopes of the ChAKRA array at the Variable Energy Cyclotron Centre in Kolkata; deduced double-differential σ(E, θ) for fragments, Q-value distributions of different isotopes, total cross sections and ratio of isotopic cross sections, variation of angular-momentum dissipation factor with different isotopes of the fragments, lifetimes of the dinuclear composites compared with compound-nuclear lifetimes; discussed fragment emission mechanism from hot dinuclear composites.

doi: 10.1103/PhysRevC.103.034614
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2021RA20      Phys.Rev. C 104, L031302 (2021)

S.Rajbanshi, S.Bhattacharya, R.Raut, R.Palit, S.Ali, R.Santra, H.Pai, F.S.Babra, R.Banik, S.Bhattacharyya, P.Dey, G.Mukherjee, Md.S.R.Laskar, S.Nandi, T.Trivedi, S.S.Ghugre, A.Goswami

Experimental evidence of exact E(5) symmetry in ⁸²Kr

NUCLEAR REACTIONS ⁷⁶Ge(⁹Be, 3n)⁸²Kr, E≈31 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), half-lives of levels by Doppler-shift attenuation method using the INGA array at the TIFR-Mumbai Pelletron Linac Facility. ⁸²Kr; deduced high-spin levels, J, π, multipolarities, bands, B(E2). Comparison with IBA calculations using E5 symmetry.

doi: 10.1103/PhysRevC.104.L031302
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2021RA31      Phys.Rev. C 104, 064316 (2021)

S.Rajbanshi, R.Palit, R.Raut, Y.Y.Wang, Z.X.Ren, J.Meng, Q.B.Chen, S.Ali, H.Pai, F.S.Babra, R.Banik, S.Bhattacharya, S.Bhattacharyya, P.Dey, S.Malik, G.Mukherjee, Md.S.R.Laskar, S.Nandi, R.Santra, T.Trivedi, S.S.Ghugre, A.Goswami

Evidence of octupole correlation in ⁷⁹Se

NUCLEAR REACTIONS ⁷⁶Ge(⁹Be, 2nα)⁷⁹Se, E≈31 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(θ)(ADO ratios), γγ(linear polarization), T_1/2 of levels by DSAM using INGA array of 14 Compton-suppressed clover detectors at the TIFR Pelletron Linac Facility. ⁷⁹Se; deduced high-spin levels, J, π, multipolarities, multipole mixing ratios, B(M1), B(E2), B(E1)/B(E2) ratios, intrinsic dipole moments, octupole correlation; calculated potential energy surface in (β₂₀, β₃₀) plane based on the covariant density functional theory. Comparison of measured transition probabilities with reflection asymmetric triaxial particle rotor model (RAT-PRM) calculations.

doi: 10.1103/PhysRevC.104.064316
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2021SI21      Nucl.Data Sheets 175, 150 (2021)

B.Singh, G.Mukherjee, S.K.Basu, S.Bhattacharya, S.Bhattacharya, A.Chakraborti, A.K.De, R.Gowrishankar, A.K.Jain, S.Kumar, S.Singh

Nuclear Data Sheets for A=219

COMPILATION ²¹⁹Pb, ²¹⁹Bi, ²¹⁹Po, ²¹⁹At, ²¹⁹Rn, ²¹⁹Fr, ²¹⁹Ra, ²¹⁹Ac, ²¹⁹Th, ²¹⁹Pa, ²¹⁹U, ²¹⁹Np; compiled, evaluated nuclear structure data.

doi: 10.1016/j.nds.2021.06.002
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2021WA19      Phys.Rev. C 103, 034301 (2021)

E.H.Wang, J.H.Hamilton, A.V.Ramayya, C.J.Zachary, A.Lemasson, A.Navin, M.Rejmund, S.Bhattacharyya, Q.B.Chen, S.Q.Zhang, J.M.Eldridge, J.K.Hwang, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, G.M.Ter-Akopian, Yu.Ts.Oganessian, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot

Pseudospin-doublet bands and Gallagher Moszkowski doublet bands in ¹⁰⁰Y

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, γγγ-, and γγγγ-coin using Gammasphere array at LBNL. ¹⁰⁰Y; deduced levels, J, π, bands, configurations.

NUCLEAR REACTIONS ⁹Be(²³⁸U, F)¹⁰⁰Y, E=6.2 MeV/nucleon; measured Eγ, γγ-coin, A- and Z-gated γ spectra using VAMOS++ spectrometer and EXOGAM array at GANIL facility. ¹⁰⁰Y; deduced high-spin levels, J, π, rotational bands, B(M1)/B(E2), configurations, moments of inertia plots. Comparison with particle-rotor model calculations.

NUCLEAR STRUCTURE ¹⁰⁰Y; calculated potential-energy surface in the (β₂, γ) plane, levels, J, π, bands, in-band B(M1), B(E2), B(M1)/B(E2), rms components of the angular momentum versus spin. Constrained triaxial covariant density-functional theory (CDFT) and quantal particle rotor model (PRM) calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.034301
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2020BA05      Phys.Rev. C 101, 014322 (2020)

R.Banik, S.Bhattacharyya, S.Bhattacharya, G.Mukherjee, R.Goswami, D.Choudhury, S.Das, S.Samanta, S.S.Ghugre, R.Raut, A.Goswami

Observation of signature partner bands in ¹¹⁷Sb

NUCLEAR REACTIONS ¹¹⁵In(α, 2n)¹¹⁷Sb, E=28 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ)(DCO), γγ(linear polarization) using the VENUS detector system at K-130 cyclotron of VECC-Kolkata. ¹¹⁷Sb; deduced high-spin levels, J, π, multipolarities, bands, configurations, alignments, staggering parameters, wave functions. Comparison with particle rotor model (PRM), and with large-scale shell-model calculations using OXBASH code.

doi: 10.1103/PhysRevC.101.014322
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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 ^{125,127,129,131,133,135}Xe, ¹³³Ba, ¹³⁵Ce.

doi: 10.1103/PhysRevC.101.044306
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2020BA52      Phys.Rev. C 102, 044329 (2020)

R.Banik, S.Bhattacharyya, M.Rejmund, A.Lemasson, S.Biswas, A.Navin, Y.H.Kim, C.Michelagnoli, I.Stefan, P.Bednarczyk, S.Bhattacharya, E.Clement, H.L.Crawford, G.de France, P.Fallon, G.Fremont, J.Goupil, B.Jacquot, H.J.Li, J.Ljungvall, A.Maj, L.Menager, V.Morel, G.Mukherjee, R.Palit, R.M.Perez-Vidal, J.Ropert, C.Schmitt

High-spin states above the isomers in neutron-rich iodine nuclei near N = 82

NUCLEAR REACTIONS ⁹Be(²³⁸U, F), E=6.2 MeV/nucleon; measured fission fragments using the VAMOS++ magnetic spectrometer and dual position-sensitive multiwire proportional counter (DPS-MWPC) at GANIL, Eγ, Iγ, prompt γγ-coin, (prompt γ)(delayed γ)-coin, (delayed γ)(delayed γ)-coin, half-lives of the isomers in ¹³¹I, ¹³²I and ¹³³I by γ(t) using AGATA array with 32 segmented HPGe detectors and seven EXOGAM segmented clover detectors for γ detection. ^{130,131,132,133,134}I; deduced high-spin levels, J, π, isomers, configurations. Comparisons with large-scale shell-model calculations using the code NUSHELLX. Systematics of experimental energy differences for the lowest states in odd-N isotopes of Sn, Sb, Te and I.

NUCLEAR STRUCTURE ^{130,131,132,133,134}I; calculated levels, J, π, probability of neutron hole occupancies in the νh_11/2 orbital as a function of the total spin of negative parity states, and average spin contributions of proton and neutrons to the total spin of the negative parity states using large-scale shell-model calculations with the code NUSHELLX. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.044329
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2020BH05      Int.J.Mod.Phys. E29, 2050020 (2020)

S.Bhattacharyya

Centrality dependence of pseudo-rapidity distribution in nucleus-nucleus collisions at (4.1-4.5) AGeV/c

NUCLEAR REACTIONS C, Ag(¹⁶O, X), (²²Ne, X), E ∼ 4 GeV/nucleon; analyzed available data; deduced the centrality dependence of pseudo-rapidity distribution.

doi: 10.1142/S0218301320500202
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2020BI06      Phys.Rev. C 102, 014326 (2020)

S.Biswas, A.Lemasson, M.Rejmund, A.Navin, Y.H.Kim, C.Michelagnoli, I.Stefan, R.Banik, P.Bednarczyk, S.Bhattacharya, S.Bhattacharyya, E.Clement, H.L.Crawford, G.de France, P.Fallon, G.Fremont, J.Goupil, B.Jacquot, H.J.Li, J.Ljungvall, A.Maj, L.Menager, V.Morel, R.Palit, R.M.Perez-Vidal, J.Ropert

Prompt-delayed γ-ray spectroscopy of neutron-rich ^{119, 121}In isotopes

NUCLEAR REACTIONS ⁹Be(²³⁸U, F), E=6.2 MeV/nucleon; measured Eγ, Iγ, γγ-coin, fission fragments, (fragment)γ-coin, half-lives of isomers by γ(t) using AGATA and EXOGAM detector arrays for prompt and delayed γ detection and the VAMOS++ spectrometer for fission fragment identification at GANIL. ^119,121In; deduced high-spin levels, J, π, configurations, B(E2). Comparison with large-scale shell-model calculations. Systematics of B(E2) values for 25/2+ to 21/2+ transitions in odd-A In isotopes.

NUCLEAR STRUCTURE ^{119,121,123,125,127,129}In, ^{121,123,125,127,129,131}Sb; calculated high-spin levels, J, π, probabilities for the neutron angular momentum and neutron seniority using large-scale shell-model.

doi: 10.1103/PhysRevC.102.014326
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2020DE30      Phys.Rev. C 102, 031301 (2020)

B.Dey, S.-S.Wang, D.Pandit, S.Bhattacharya, X.-G.Cao, W.-B.He, Y.-G.Ma, N.Quang Hung, N.Dinh Dang

Exotic nuclear shape due to cluster formation at high angular momentum

NUCLEAR REACTIONS ¹²C(¹⁶O, X)²⁸Si^*,12C(²⁰Ne, X)³²S^*, E not given; calculated density distributions using extended quantum molecular dynamics (EQMD) model, considering ¹²C as a triangle, ¹⁶O as a square, and ²⁰Ne as a pentagonal. ²⁸Si, ³²S; calculated neutron and proton pairing gaps as functions of temperature and angular momenta within the finite-temperature BCS (FTBCS) theory; analyzed experimental data for giant dipole resonance (GDR) strength functions for Eγ=5 to 30 MeV, and compared with EQMD calculations, and with TSFM calculations with and without shell corrections. Discussed effects of cluster shapes of ³²S and ²⁸Si in the GDR strength function at high angular momentum and temperature.

doi: 10.1103/PhysRevC.102.031301
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2020MA11      Acta Phys.Pol. B51, 829 (2020)

M.Matejska-Minda, P.J.Napiorkowski, R.Kumar, M.Saxena, S.Dutt, A.Agarwal, I.Ahmed, S.Bhattacharya, A.Jhingan, J.Kaur, M.Kicinska-Habior, M.Kumar, S.Kumar, D.Kumar, V.Nanal, R.Palit, N.K.Rai, M.Shuaib, A.Sood, A.Stolarz, T.Trivedi, A.K.Tyagi, R.K.Bhowmik, H.J.Wollersheim

Revised Lifetime of the 11/2^- State in ⁴⁵Sc via Coulomb Excitation

doi: 10.5506/APhysPolB.51.829
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2020MO34      Phys.Rev. C 102, 051302(R) (2020)

D.Mondal, D.Pandit, S.Mukhopadhyay, S.Pal, P.Roy, V.Suman, B.Dey, S.Bhattacharya, A.De, C.Bhattacharya, S.R.Banerjee

Probing the Jacobi shape transition in hot and rotating ⁴³Sc

NUCLEAR REACTIONS ²⁷Al(¹⁶O, X)⁴³Sc^*, E=120, 142 MeV; measured Eγ, Iγ, E(n), I(n) from the decay of the giant dipole resonance (GDR) using LAMBDA array of 49 BaF₂ scintillators, and a multiplicity filter of 50 small BaF₂ scintillators for γ rays, and a liquid scintillator (BC501A)-based detector and time-of-flight method for neutrons at the K-130 cyclotron of VECC-Kolkata; deduced energy, width and inverse level-density parameters for the GDR, angular momentum for the Jacobi shape transition, deformation parameter. Comparison with theoretical calculations in the frameworks of rotating liquid drop model, and the adiabatic thermal shape fluctuation model.

doi: 10.1103/PhysRevC.102.051302
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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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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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2020PA45      Phys.Rev. C 102, 054604 (2020)

D.Paul, A.Sen, T.K.Ghosh, Md.M.Shaikh, K.Atreya, S.Kundu, K.Banerjee, C.Bhattacharya, S.Bhattacharya, J.K.Meena, D.C.Biswas, B.N.Joshi, N.Kumar, G.K.Prajapati, Y.K.Gupta, K.Mahata, K.Ramachandran, S.Pal

Measurement of fragment-mass distributions from fission of ²¹⁴At following the ⁹Be + ²⁰⁵Tl reaction

NUCLEAR REACTIONS ²⁰⁵Tl(⁹Be, X)²¹⁴At^*, E=42, 43.5, 45, 47 MeV; measured reaction products, yields, time-of-flight difference of the fission fragments, Angular correlations using two position-sensitive multiwire proportional counters (MWPC) at the BARC-TIFR Pelletron facility; deduced fission-fragments mass distributions, half-mass yield distribution, slight asymmetric mass distribution. Comparison with theoretical predictions from a recent macroscopic-microscopic calculation.

doi: 10.1103/PhysRevC.102.054604
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2020RA10      Phys.Rev. C 101, 064313 (2020)

P.Ray, H.Pai, S.Ali, A.Mukherjee, A.Goswami, S.Rajbanshi, S.Bhattacharya, R.Banik, S.Nandi, S.Bhattacharyya, G.Mukherjee, C.Bhattacharya, S.Chakraborty, G.Gangopadhyay, M.S.R.Laskar, R.Palit, G.H.Bhat, S.Jehangir, J.A.Sheikh, A.K.Sinha, S.Samanta, S.Das, S.Chatterjee, R.Raut, S.S.Ghugre

Quasi-γ band in ¹¹⁴Te

NUCLEAR REACTIONS ¹¹²Sn(α, 2n), E=37 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the INGA array for γ detection at VECC, Kolkata. ¹¹⁴Te; deduced levels, J, π, multipolarities, mixing ratios, quasi γ band, odd-even energy staggering in ¹¹⁴Te and ¹¹⁸Xe. Comparison with theoretical calculations using interacting boson model (IBM) and triaxial projected shell model (TPSM).

doi: 10.1103/PhysRevC.101.064313
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2020SA28      Eur.Phys.J. A 56, 189 (2020)

A.Saha, T.Bhattacharjee, D.Banerjee, D.Pandit, P.Das, S.Bhattacharya, R.Guin, S.K.Das, S.R.Banerjee

β-Decay endpoint energy measurement in ¹⁵⁰Pm → ¹⁵⁰Sm using β - γ coincidence

doi: 10.1140/epja/s10050-020-00194-w
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2019AL28      Phys.Lett. B 798, 134960 (2019)

S.Ali, S.Rajbanshi, R.Raut, H.Pai, Y.Y.Wang, G.Gangopadhyay, J.Meng, R.Palit, S.Nag, A.Bisoi, S.Saha, J.Sethi, S.Bhattacharyya, S.Chattopadhyay, G.Mukherjee, A.K.Singh, T.Trivedi, A.Goswami

Evidence of the octupole correlation between the shears bands in ¹⁴²Eu

NUCLEAR REACTIONS ¹¹⁶Cd(³¹P, 5n)¹⁴²Eu, E=148 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, levels, J, π, branching ratio, level T_1/2, B(M1), B(E1), B(E2), two opposite parity dipole bands, octupole correlation.

doi: 10.1016/j.physletb.2019.134960
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2019AS06      Eur.Phys.J. A 55, 175 (2019)

Md.A.Asgar, G.Mukherjee, T.Roy, S.Nandi, G.H.Bhatt, J.A.Sheikh, R.Palit, S.Bhattacharyya, S.Bhattacharya, C.Bhattacharya, A.Dhal, T.K.Ghosh, A.Chaudhuri, K.Banerjee, S.Kundu, T.K.Rana, P.Roy, R.Pandey, S.Manna, J.K.Meena, S.Saha, S.Biswas, J.Sethi, P.Singh, D.Choudhury

Band structures in ¹⁶⁹Tm and the structures of Tm isotopes around N=98

doi: 10.1140/epja/i2019-12882-3
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2019BH04      Phys.Rev. C 100, 014315 (2019)

S.Bhattacharya, T.Trivedi, D.Negi, R.P.Singh, S.Muralithar, R.Palit, I.Ragnarsson, S.Nag, S.Rajbanshi, M.Kumar Raju, V.V.Parkar, G.Mohanto, S.Kumar, D.Choudhury, R.Kumar, R.K.Bhowmik, S.C.Pancholi, A.K.Jain

Evolution of collectivity and evidence of octupole correlations in ⁷³Br

NUCLEAR REACTIONS ⁵⁰Cr(²⁸Si, pα), E=90 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(lin pol), and level half-lives by DSAM and line-shape method using the INGA array at 15UD Pelletron accelerator of IUAC. ⁷³Br; deduced high-spin levels, J, π, multipolarities, bands, octupole band, B(E2), B(E1), B(M1), B(E1)/B(E2) ratios, transition quadrupole moments, configurations, octupole correlations, possible band termination at higher spin; calculated low-lying configurations, total Routhian surfaces using cranked Nilsson-Strutinsky method, and compared with experimental data.

doi: 10.1103/PhysRevC.100.014315
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2019BI04      Phys.Rev. C 99, 064302 (2019)

S.Biswas, A.Lemasson, M.Rejmund, A.Navin, Y.H.Kim, C.Michelagnoli, I.Stefan, R.Banik, P.Bednarczyk, S.Bhattacharya, S.Bhattacharyya, E.Clement, H.L.Crawford, G.de France, P.Fallon, G.Fremont, J.Goupil, B.Jacquot, H.J.Li, J.Ljungvall, A.Maj, L.Menager, V.Morel, R.Palit, R.M.Perez-Vidal, J.Ropert, D.Barrientos, G.Benzoni, B.Birkenbach, A.J.Boston, H.C.Boston, B.Cederwall, J.Collado, D.M.Cullen, P.Desesquelles, C.Domingo-Pardo, J.Dudouet, J.Eberth, V.Gonzalez, L.J.Harkness-Brennan, H.Hess, A.Jungclaus, W.Korten, M.Labiche, A.Lefevre, R.Menegazzo, D.Mengoni, B.Million, D.R.Napoli, A.Pullia, B.Quintana, D.Ralet, F.Recchia, P.Reiter, F.Saillant, M.D.Salsac, E.Sanchis, O.Stezowski, Ch.Theisen, J.J.Valiente-Dobon, M.Zielinska

Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich ^122-131₅₁Sb isotopes

NUCLEAR REACTIONS ⁹Be(²³⁸U, F)¹²²Sb/¹²³Sb/¹²⁴Sb/¹²⁵Sb/¹²⁶Sb/¹²⁷Sb/¹²⁸Sb/¹²⁹Sb/¹³⁰Sb/¹³¹Sb, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ, γγ- and (fragment)γ-coin, T_1/2 of isomers by γγ(t) using the VAMOS++ spectrometer for fragment identification and the AGATA array with EXOGAM detectors for γ detection at GANIL. ^{122,123,124,125,126,127,128,129,130,131}Sb; deduced levels, J, π, isomers, bands, and B(E2). Systematics of excitation energies and B(E2) values in ^{118,119,120,121,122,123,124,125,126,127,128,129,130}Sn, ^{121,122,123,124,125,126,127,128,129,130,131}Sb. Comparison with shell model calculations. Discussed neutron-neutron and neutron-proton interactions, and neutron seniority mixings.

doi: 10.1103/PhysRevC.99.064302
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2019DE04      Phys.Lett. B 789, 634 (2019)

B.Dey, N.Quang Hung, D.Pandit, S.Bhattacharya, N.Dinh Dang, L.T.Quynh Huong, D.Mondal, S.Mukhopadhyay, S.Pal, A.De, S.R.Banerjee

S-shaped heat capacity in an odd-odd deformed nucleus

NUCLEAR STRUCTURE ¹⁸⁴Re, ²⁰⁰Tl, ²¹¹Po, ²¹²At; calculated angular-momentum-gated thermodynamic quantities as functions of temperature gated nuclear level densities.

doi: 10.1016/j.physletb.2018.12.007
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2019KO03      Phys.Rev. C 99, 014616 (2019)

E.M.Kozulin, G.N.Knyazheva, T.K.Ghosh, A.Sen, I.M.Itkis, M.G.Itkis, K.V.Novikov, I.N.Diatlov, I.V.Pchelintsev, C.Bhattacharya, S.Bhattacharya, K.Banerjee, E.O.Saveleva, I.V.Vorobiev

Fission and quasifission of the composite system Z=114 formed in heavy-ion reactions at energies near the Coulomb barrier

NUCLEAR REACTIONS ²³²Th(⁵²Cr, X)²⁸⁴Fl^*, E=265, 288, 302, 320 MeV; ¹⁹⁸Pt(⁸⁶Kr, X)²⁸⁴Fl^*, E=465 MeV; measured mass and energy distributions of binary fragments detected in coincidence using the double-arm time-of-flight spectrometer CORSET at FLNR-JINR-Dubna facility. ²³²Th(⁵²Cr, X)²⁸⁴Fl^*, E=265, 288, 302, 320 MeV; ¹⁹⁸Pt(⁸⁶Kr, X)²⁸⁴Fl^*, E=465 MeV; ²³⁸U(⁴⁸Ti, X)²⁸⁶Fl^*, E=247, 258, 271 MeV; ²⁴⁴Pu(⁴⁸Ca, X)²⁹²Fl^*, E=226-244 MeV; ²³⁸U(⁴⁸Ca, X)²⁸⁶Cn^*, E=228-238 MeV; deduced mass and energy distributions of binary fragments, contribution from symmetric fragments to cross section, capture σ, cross sections of symmetric fragments, TKE distributions. Data for ⁴⁸Ca and ⁴⁸Ti beams are from authors' previous works 2014Ko45 and 2016Ko35. ²⁸⁴Fl; calculated potential energy surface as a function of elongation and mass asymmetry.

doi: 10.1103/PhysRevC.99.014616
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2019MA90      Acta Phys.Pol. B50, 411 (2019)

M.Matejska-Minda, R.Kumar, P.J.Napiorkowski, M.Saxena, S.Dutt, A.Agarwal, I.Ahmed, S.Bhattacharya, A.Jhingan, J.Kaur, M.Kicinska-Habior, M.Kumar, S.Kumar, D.Kumar, V.Nanal, R.Palit, N.K.Rai, M.Shuaib, A.Sood, A.Stolarz, T.Trivedi, A.K.Tyagi, R.K.Bhowmik, H.J.Wollersheim

Investigation of an Intruder Band in ⁴⁵Sc via Coulomb Excitation

NUCLEAR REACTIONS ⁴⁵Sc(³²S, ³²S), E=70 MeV; measured reaction products, Eγ, Iγ, (particle)γ-coin, γγ-coin; deduced γ-ray transitions, levels, J, π.

doi: 10.5506/aphyspolb.50.411
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2019NA08      Phys.Rev. C 99, 054312 (2019)

S.Nandi, G.Mukherjee, T.Roy, R.Banik, A.Dhal, S.Bhattacharya, S.Bhattacharyya, C.Bhattacharya, Md.A.Asgar, H.Pai, S.Rajbanshi, P.Roy, T.K.Ghosh, K.Banerjee, T.K.Rana, S.Kundu, S.Manna, R.Pandey, A.Sen, S.Pal, S.Mukhopadhyay, D.Pandit, D.Mandal, S.R.Banerjee

Effect of neutron alignments on the structure of ¹⁹⁷Tl

NUCLEAR REACTIONS ¹⁹⁷Au(α, 4n), E=50 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), and γγ(polarization asymmetry) using the VENUS array for γ detection at VECC facility in Kolkata. ¹⁹⁷Tl; deduced high-spin levels, J, π, multipolarities, B(M1)/B(E2), magnetic-dipole rotational bands, no evidence of chiral doublet bands, alignments, Routhians, and configurations; calculated total Routhian surfaces. Systematics of aligned angular momenta in ^{193,195,197,199}Tl, ^194,196Hg.

doi: 10.1103/PhysRevC.99.054312
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2019PA13      Phys.Rev. C 99, 024315 (2019)

D.Pandit, S.Bhattacharya, D.Mondal, B.Dey, S.Mukhopadhyay, S.Pal, A.De, S.R.Banerjee

Role of fluctuations in a thermal phase transition in a nucleus probed via the giant dipole resonance

NUCLEAR REACTIONS ¹⁶⁵Ho(α, X), E=32, 37, 42, 50 MeV; measured high-energy Eγ, Iγ, σ(E), angular anisotropy coefficients using the LAMBDA spectrometer at VECC, Kolkata. ¹⁶⁹Tm; deduced GDR, linearized GDR strength functions and widths, β deformation parameters and compared with theoretical calculations, thermal phase transition; calculated contours of free energy surfaces. Systematics of β deformation parameters in ^160,166Er, ¹⁶⁹Tm. Discussed sharp phase transition from prolate to near spherical.

doi: 10.1103/PhysRevC.99.024315
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2019RA29      Phys.Lett. B 793, 130 (2019)

T.K.Rana, S.Bhattacharya, C.Bhattacharya, S.Manna, S.Kundu, K.Banerjee, R.Pandey, P.Roy, A.Dhal, G.Mukherjee, V.Srivastava, A.Dey, A.Chaudhuri, T.K.Ghosh, A.Sen, Md.A.Asgar, T.Roy, J.K.Sahoo, J.K.Meena, A.K.Saha, R.M.Saha, M.Sinha, A.Roy

New high precision study on the decay width of the Hoyle state in ¹²C

RADIOACTIVITY ¹²C(3α) [from ¹²C(α, α), E=15 MeV/nucleon]; measured decay products, EnullIα; deduced Dalitz plots, the upper limit for direct decay.

doi: 10.1016/j.physletb.2019.04.028
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2019SA61      J.Phys.(London) G46, 055102 (2019); Corrigendum J.Phys.(London) G46, 109501 (2019)

A.Saha, T.Bhattacharjee, D.Curien, J.Dudek, I.Dedes, K.Mazurek, A.Gozdz, S.Tagami, Y.R.Shimizu, S.R.Banerjee, S.Rajbanshi, A.Bisoi, G.de Angelis, S.Bhattacharya, S.Bhattacharyya, S.Biswas, A.Chakraborty, S.Das Gupta, B.Dey, A.Goswami, D.Mondal, D.Pandit, R.Palit, T.Roy, R.P.Singh, M.S.Sarkar, S.Saha, J.Sethi

Spectroscopy of a tetrahedral doubly magic candidate nucleus ¹⁶⁰₇₀Yb₉₀

NUCLEAR REACTIONS ¹⁴⁸Sm(¹⁶O, 4n)¹⁶⁰Yb, E=90 MeV; measured reaction products, Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(θ)(ADO) and γγ(linearpol) using INGA array of 20 Compton-suppressed HPGe clover detectors at TIFR pelletron facility. ¹⁶⁰Yb; deduced high-spin levels, J, π, multipolarities, rotational bands, alignments, tetrahedral deformation. Systematics of g.s. and negative-parity bands in ^152,154,156Gd.

doi: 10.1088/1361-6471/ab0573
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2018BH05      Eur.Phys.J. A 54, 158 (2018)

S.Bhattacharya, C.Bhattacharya, P.Das, G.Mukherjee, T.K.Ghosh

Experimental nuclear physics research using the cyclotron at VECC

doi: 10.1140/epja/i2018-12586-2
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2018BH06      Phys.Rev. C 98, 044311 (2018)

S.Bhattacharya, S.Bhattacharyya, R.Banik, S.Das Gupta, G.Mukherjee, A.Dhal, S.S.Alam, Md.A.Asgar, T.Roy, A.Saha, S.Nandi, T.Bhattacharjee, A.Choudhury, D.Mondal, S.Mukhopadhyay, P.Mukhopadhyay, S.Pal, D.Pandit, I.Shaik, S.R.Banerjee

Yrast and non-yrast spectroscopy of ¹⁹⁹Tl using α-induced reactions

NUCLEAR REACTIONS ¹⁹⁷Au(α, 2n), E=30 MeV; measured Eγ, Iγ, γγ-coin, and γγ(θ)(DCO), and γγ(lin pol)(IPDCO) using VENUS array of HPGe detectors at VECC-Kolkata cyclotron facility. ¹⁹⁹Tl; deduced high-spin levels, J, π, bands, multipolarities, alignment and staggering plots, and configurations; calculated total Routhian surface (TRS) contours in (β₂, γ) plane. Systematics of band structures in ^{193,195,197,199,201}Tl.

doi: 10.1103/PhysRevC.98.044311
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2018BH07      Phys.Rev. C 98, 044316 (2018)

S.Bhattacharyya, E.H.Wang, A.Navin, M.Rejmund, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, A.Lemasson, A.V.Afanasjev, S.Bhattacharya, J.Ranger, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot, Y.X.Luo, Yu.Ts.Oganessian, J.O.Rasmussen, G.M.Ter-Akopian, S.J.Zhu

Deformed band structures in neutron-rich ^152-158Pm isotopes

NUCLEAR REACTIONS ⁹Be(²³⁸U, F), E=6.2 MeV/nucleon; measured fission fragments, time of flight, Eγ, Iγ, γγ- and (fragment)γ-coin using the VAMOS++ magnetic spectrometer for fragment separation and the EXOGAM segmented Clover array for γ detection at GANIL. ^{152,153,154,155,156,157,158}Pm; deduced high-spin levels, J, π, bands, alignment and staggering plots. ¹⁵¹Pm; measured γ spectrum in coincidence with fission fragments. Systematics of band structures in ^{151,153,155,157}Pm. Comparison with previous experimental values and cranked Hartree-Bogoliubov calculations.

RADIOACTIVITY ²⁵²Cf(SF); measured Eγ, Iγ, γ(θ), high-fold γγ-coin using Gammasphere array with 101 HPGe detectors at LBNL. ^{152,153,154,155,156,157,158}Pm; deduced high-spin levels, bands.

doi: 10.1103/PhysRevC.98.044316
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2018GH07      Phys.Rev. C 98, 045202 (2018)

S.Ghosh, S.Ghosh, S.Bhattacharyya

Phenomenological bound on the viscosity of the hadron resonance gas

doi: 10.1103/PhysRevC.98.045202
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2018KO01      Nucl.Data Sheets 147, 382 (2018)

F.G.Kondev, E.A.McCutchan, B.Singh, K.Banerjee, S.Bhattacharya, A.Chakraborty, S.Garg, N.Jovancevic, S.Kumar, S.K.Rathi, T.Roy, J.Lee, R.Shearman

Nuclear Data Sheets for A=217

COMPILATION ²¹⁷Tl, ²¹⁷Pb, ²¹⁷Bi, ²¹⁷Po, ²¹⁷At, ²¹⁷Rn, ²¹⁷Fr, ²¹⁷Ra, ²¹⁷Ac, ²¹⁷Th, ²¹⁷Pa, ²¹⁷U; compiled, evaluated nuclear structure data.

doi: 10.1016/j.nds.2018.01.002
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This article is in the ENSDF database. For more information, click here.

2018KU06      Eur.Phys.J. A 54, 63 (2018)

S.Kundu, C.Bhattacharya, T.K.Rana, S.Bhattacharya, R.Pandey, K.Banerjee, P.Roy, J.K.Meena, G.Mukherjee, T.K.Ghosh, S.Mukhopadhyay, A.K.Saha, J.K.Sahoo, R.M.Saha, V.Srivastava, M.Sinha, M.A.Asgar

Effect of clustering on the emission of light charged particles

NUCLEAR REACTIONS ²⁷Al(p, α), E=18 MeV; measured Eα, Iα(θ); deduced σ(Eα, θ); calculated σ(Eα, θ) using CASCADE code with RLDM values of spin-dependent deformation parameters; deduced critical angular momentum, deformation parameters; compared with published results for 15 heavy-ion reactions.

doi: 10.1140/epja/i2018-12494-5
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2018MO22      Phys.Lett. B 784, 423 (2018)

D.Mondal, D.Pandit, S.Mukhopadhyay, S.Pal, S.Bhattacharya, A.De, N.Dinh Dang, N.Quang Hung, S.Bhattacharya, S.Bhattacharyya, B.Dey, P.Roy, K.Banerjee, S.R.Banerjee

Study of giant dipole resonance in hot rotating light mass nucleus ³¹P

NUCLEAR REACTIONS ²⁷Al(α, X)³¹P, E=28, 35, 42 MeV; measured reaction products, Eγ, Iγ; deduced yields, σ, giant dipole resonance parameters, widths. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2018.07.052
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2018PA16      Phys.Rev. C 97, 041301 (2018)

D.Pandit, S.Bhattacharya, D.Mondal, P.Roy, K.Banerjee, S.Mukhopadhyay, S.Pal, A.De, B.Dey, S.R.Banerjee

Experimental signature of collective enhancement in nuclear level density

NUCLEAR REACTIONS ¹⁶⁵Ho(α, X)¹⁶⁹Tm*, E=28 MeV; measured Eγ, Iγ, from GDR, E(n) and I(n) from Tm nuclides, nγ-coin, nγ(θ) of ¹⁶⁹Tm compound nucleus n-decay chain using LAMBDA spectrometer at the K-130 cyclotron facility of Variable Energy Cyclotron Centre (VECC), Kolkata. ^169,168,167Tm; deduced enhanced nuclear level densities (NLD). Comparison with calculations using CASCADE code.

doi: 10.1103/PhysRevC.97.041301
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2018PA24      Phys.Rev. C 98, 014601 (2018)

V.V.Parkar, S.K.Pandit, A.Shrivastava, R.Palit, K.Mahata, V.Jha, K.Ramachandran, S.Gupta, S.Santra, S.K.Sharma, S.Upadhyaya, T.N.Nag, S.Bhattacharya, T.Trivedi, S.Kailas

Fusion reaction studies for the ⁶Li + ¹²⁴Sn system at near-barrier energies

NUCLEAR REACTIONS ¹²⁴Sn(⁶Li, X)¹²⁶I/¹²⁷I/¹²³Sn/¹²⁵Sn/¹²⁵Sb/¹²⁴Sb/¹²⁷Te/¹²⁶Te, E=17.5-35.7 MeV; ¹⁵⁹Tb(⁶Li, X)¹⁶⁰Ho/¹⁶²Ho, E=23.7-33.8 MeV; measured Eγ, Iγ, σ(E) for evaporation residues, complete, incomplete and total fusion (CF, ICF, TF), transfer and capture reactions by online and offline activation methods at the BARC-TIFR Pelletron-Linac facility. Comparison with previous experimental incomplete fusion σ for ²⁰⁹Bi, ¹⁹⁷Au, ¹⁵⁹Tb, ¹²⁴Sn(⁷Li, X), (⁶Li, X) reactions, and with statistical model and coupled channel calculations using PACE and CCFULL codes.

doi: 10.1103/PhysRevC.98.014601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6342.

2018RA14      Phys.Lett. B 782, 143 (2018)

S.Rajbanshi, R.Raut, H.Pai, S.Ali, A.Goswami, G.Gangopadhyay, S.Bhattacharyya, G.Mukherjee, S.Muralithar, R.P.Singh, M.Kumar Raju, P.Singh, R.K.Bhowmik

Abrupt phase change of the core rotation in the ¹⁴³Sm nucleus

NUCLEAR REACTIONS ¹²⁴Sn(²⁴Mg, 5n), E=107 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, branching, level lifetimes and side feeding lifetimes, B(M1), B(E2), high spin dipole sequences. Comparison with available data.

doi: 10.1016/j.physletb.2018.05.021
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2018RA26      Phys.Rev. C 98, 061304 (2018)

S.Rajbanshi, R.Raut, H.Pai, S.Ali, A.Goswami, S.Bhattacharyya, G.Mukherjee, R.K.Bhowmik, S.Muralithar, R.P.Singh, G.Gangopadhyay, M.Kumar Raju, P.Singh

Extremely asymmetric shears band in ¹⁴³Sm

NUCLEAR STRUCTURE ¹²⁴Sn(²⁴Mg, 5n), E=107 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear pol), level half-lives by DSA method using the INGA array at the 15UD pelletron facility of IUAC-New Delhi. ¹⁴³Sm; deduced high-spin levels, J, π, multipolarities, mixing ratios, magnetic dipole rotational (shears) band, B(M1), B(E2), configuration. Comparison with the principle axis cranking (SPAC) model predictions.

doi: 10.1103/PhysRevC.98.061304
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2018RO15      Phys.Lett. B 782, 768 (2018)

T.Roy, G.Mukherjee, Md.A.Asgar, S.Bhattacharyya, S.Bhattacharya, C.Bhattacharya, S.Bhattacharya, T.K.Ghosh, K.Banerjee, S.Kundu, T.K.Rana, P.Roy, R.Pandey, J.Meena, A.Dhal, R.Palit, S.Saha, J.Sethi, S.Thakur, B.S.Naidu, S.V.Jadav, R.Dhonti, H.Pai, A.Goswami

Observation of multiple doubly degenerate bands in ¹⁹⁵Tl

NUCLEAR REACTIONS ^185,187Re(¹³C, xn)¹⁹⁵Tl, E=75 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, B(M1)/B(E2), higher spin states, multiple chiral bands. Comparison with the total Routhian surface (TRS) calculations.

doi: 10.1016/j.physletb.2018.06.033
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2018SA07      Phys.Scr. 93, 034001 (2018)

A.Saha, T.Bhattacharjee, D.Curien, I.Dedes, K.Mazurek, S.R.Banerjee, S.Rajbanshi, A.Bisoi, G.de Angelis, S.Bhattacharya, S.Bhattacharyya, S.Biswas, A.Chakraborty, S.Das Gupta, B.Dey, A.Goswami, D.Mondal, D.Pandit, R.Palit, T.Roy, R.P.Singh, M.S.Sarkar, S.Saha, J.Sethi

Excited negative parity bands in ¹⁶⁰Yb

NUCLEAR REACTIONS ¹⁴⁸Sm(¹⁶O, 4n)¹⁶⁰Yb, E=90 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, B(E2)/B(E1) ratios, non-yrast negative parity structures, bands. Comparison with energy calculation results obtained using the standard Woods-Saxon universal Hamiltonian.

doi: 10.1088/1402-4896/aaa1fa
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2018SA22      Nucl.Phys. A976, 1 (2018)

A.Saha, T.Bhattacharjee, S.S.Alam, D.Banerjee, M.S.Sarkar, S.Sarkar, J.B.Gupta, P.Das, S.Bhattacharya, D.Pandit, R.Guin, S.K.Das, S.R.Banerjee

Spectroscopy of low lying states in ¹⁵⁰Sm

NUCLEAR REACTIONS ¹⁵⁰Nd(p, n)¹⁵⁰Sm, E=8.0 MeV; measured Eγ, Iγ, γγ-coin using VENUS array of six Compton-suppressed Clover HPGe. ¹⁵⁰Sm deduced γ transitions, levels, J, π, spin and parity using NNDC logft calculator and angular correlations; estimated possible M2 admixture, B(E1).

doi: 10.1016/j.nuclphysa.2018.05.005
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2018SI22      Phys.Rev. C 98, 024615 (2018)

A.K.Sikdar, A.Ray, D.Pandit, B.Dey, S.Bhattacharyya, S.Bhattacharya, A.Bisoi, A.De, S.Paul, S.Bhattacharya, A.Chatterjee

Slow fission of highly excited plutonium nuclei

NUCLEAR REACTIONS ²³⁸U(α, F), E=60 MeV; measured K x-rays, low-energy γ rays, (K x-ray)(fission fragments)-coin, (γ)(fission fragments)-coin, random coincidence spectra using a four-segmented high purity planar Ge low-energy photon spectrometer (LEPS) for x rays and γ rays, and a photovoltaic cell for fission fragment detection at VECC, Kolkata; deduced Pu K_α1 x-ray at 102.8 keV, plausible shift of plutonium K x-ray lines, fission time of the slow fission events >10^-18 s. Comparison with atomic physics theoretical calculations.

doi: 10.1103/PhysRevC.98.024615
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2017AL30      Phys.Rev. C 96, 021304 (2017)

S.Ali, S.Rajbanshi, B.Das, S.Chattopadhyay, M.S.Sarkar, A.Goswami, R.Raut, A.Bisoi, S.Nag, S.Saha, J.Sethi, R.Palit, G.Gangopadhyay, T.Bhattacharjee, S.Bhattacharyya, G.Mukherjee, A.K.Singh, T.Trivedi

Evidence of antimagnetic rotation in an odd-odd nucleus: The case of ¹⁴²Eu

NUCLEAR REACTIONS ¹¹⁶Cd(³¹P, 5n), E=148 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ)(ADO and DCO ratios), γγ(linear polarization), level half-lives by DSAM using INGA array at 14UD Pelletron-Linear facility of TIFR-Mumbai. ¹⁴²Eu; deduced high-spin levels, J, π, band, multipolarities, mixing ratio, B(E2), dynamic moment of inertia J⁽²⁾, J⁽²⁾/B(E2) ratios, antimagnetic rotational (AMR) band, and configuration. Comparison with predictions of semiclassical geometric model, and with the experimental data for AMR band in ¹⁴³Eu.

doi: 10.1103/PhysRevC.96.021304
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2017AS01      Phys.Rev. C 95, 031304 (2017)

Md.A.Asgar, T.Roy, G.Mukherjee, A.Dhal, S.Bhattacharya, S.Bhattacharyya, C.Bhattacharya, S.Bhattacharya, A.Chaudhuri, K.Banerjee, S.Kundu, S.Manna, R.Pandey, J.K.Meena, R.Palit, S.Biswas, S.Saha, J.Sethi, P.Singh, D.Choudhury

Return of backbending in ¹⁶⁹Tm and the effect of the N=98 deformed shell gap

NUCLEAR REACTIONS ¹⁶⁹Tm(³²S, ³²S'), E=164 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array at 14-UD BARC-TIFR Pelletron facility. ¹⁶⁹Tm; deduced high-spin levels, J, π, multipolarities, bands, configurations, alignments, band crossings, deformation parameters. Comparison with cranked shell model calculations. Systematics of alignment plots of rotational bands in ^165,167,169Tm nuclei.

NUCLEAR STRUCTURE ^165,167,169Tm; calculated total Routhian surface (TRS) contours, quasineutron energy levels, crossing frequencies and interaction strengths at the band crossings in 1/2[411] bands. Comparison with experimental band crossing frequencies. Cranked shell model calculations.

doi: 10.1103/PhysRevC.95.031304
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2017BA35      Phys.Lett. B 772, 105 (2017)

K.Banerjee, P.Roy, D.Pandit, J.Sadhukhan, S.Bhattacharya, C.Bhattacharya, G.Mukherjee, T.K.Ghosh, S.Kundu, A.Sen, T.K.Rana, S.Manna, R.Pandey, T.Roy, A.Dhal, Md.A.Asgar, S.Mukhopadhyay

Direct evidence of fadeout of collective enhancement in nuclear level density

NUCLEAR REACTIONS ¹⁶⁹Tm, ¹⁸¹Ta, ¹⁹⁷Au(α, X), E=26, 30, 35, 40 MeV; measured reaction products. ¹⁷³Lu, ¹⁸⁵Re, ²⁰¹Tl; deduced the phenomenon of collective enhancement in nuclear level density and its fadeout using neutron evaporation study. Comparison with calculations based on finite temperature density functional theory.

doi: 10.1016/j.physletb.2017.06.033
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2017BH02      Phys.Rev. C 95, 014301 (2017)

S.Bhattacharya, S.Bhattacharyya, S.Das Gupta, H.Pai, G.Mukherjee, R.Palit, F.R.Xu, Q.Wu, A.Shrivastava, Md.A.Asgar, R.Banik, T.Bhattacharjee, S.Chanda, A.Chatterjee, A.Goswami, V.Nanal, S.K.Pandit, S.Saha, J.Sethi, T.Roy, S.Thakur

Deformed band structures at high spin in ²⁰⁰Tl

NUCLEAR REACTIONS ¹⁹⁸Pt(⁷Li, 5n), E=45 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), γ(θ) using INGA array at BARC-TIFR Pelletron LINAC facility. ²⁰⁰Tl; deduced high-spin levels, J, π, multipolarities, band structures, alignments, configurations, staggering and B(M1)/B(E2) ratios. Total Routhian surface calculations using Strutinsky shell correction method and deformed Woods-Saxon potential.

doi: 10.1103/PhysRevC.95.014301
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2017BH08      Can.J.Phys. 95, 715 (2017)

S.Bhattacharyya, M.Haiduc, A.T.Neagu, E.Firu

An investigation of Renyi entropy in high-energy nucleus-nucleus collisions

NUCLEAR REACTIONS Ag, Br, C, N, O(¹⁶O, X), (²⁸Si, X), (³²S, X), E=4.5 GeV/nucleon; measured reaction products; deduced average multiplicity. Comparison with UrQMD model.

doi: 10.1139/cjp-2016-0911
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2017DE34      Phys.Rev. C 96, 054326 (2017)

B.Dey, D.Pandit, S.Bhattacharya, N.Quang Hung, N.Dinh Dang, L.Tan Phuc, D.Mondal, S.Mukhopadhyay, S.Pal, A.De, S.R.Banerjee

Level density and thermodynamics in the hot rotating ⁹⁶Tc nucleus

NUCLEAR REACTIONS ⁹³Nb(α, n)⁹⁶Tc, E=28 MeV; measured E(n), I(n), Eγ, Iγ, nγ-coin at VECC-Kolkata cyclotron facility; deduced fold and angular momentum distributions, neutron and proton pairing gaps as functions of temperature, angular momentum gated nuclear level density (NLD), excitation energy-dependent spin cutoff factor. Comparison with statistical model calculations, and different microscopic calculations such as exact pairing plus independent particle model at finite temperature (EP+IPM), Hartree-Fock plus BCS (HF+BCS), and Hartree-Fock-Bogoliubov plus combinatorial method (HFBC).

doi: 10.1103/PhysRevC.96.054326
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2017KI08      Phys.Lett. B 772, 403 (2017)

Y.H.Kim, S.Biswas, M.Rejmund, A.Navin, A.Lemasson, S.Bhattacharyya, M.Caamano, E.Clement, G.de France, B.Jacquot

The impact of the intruder orbitals on the structure of neutron-rich Ag isotopes

NUCLEAR REACTIONS ⁹Be(²³⁸U, X)¹¹³Ag/¹¹⁸Ag/¹¹⁹Ag/¹²⁰Ag/¹²¹Ag, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, level diagram of the yrast bands, J, π, signature splitting for the yrast band of Ag isotopes. Comparison with calculations.

doi: 10.1016/j.physletb.2017.06.058
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2017KI09      Eur.Phys.J. A 53, 162 (2017)

Y.H.Kim, A.Lemasson, M.Rejmund, A.Navin, S.Biswas, C.Michelagnoli, I.Stefan, R.Banik, P.Bednarczyk, S.Bhattacharya, S.Bhattacharyya, E.Clement, H.L.Crawford, G.De France, P.Fallon, J.Goupil, B.Jacquot, H.J.Li, J.Ljungvall, A.O.Macchiavelli, A.Maj, L.Menager, V.Morel, R.Palit, R.M.Perez-Vidal, J.Ropert, C.Schmitt

Prompt-delayed γ-ray spectroscopy with AGATA, EXOGAM and VAMOS++

NUCLEAR REACTIONS ⁹Be(²³⁸U, f), (²³⁸U, x), E=6.2 MeV/nucleon; measured fission fragments using VAMOS++ spectrometer (MWPC ToF, 2 drift chambers, segmented ionization chamber), prompt Eγ, Iγ, γγ-coin using AGATA γ-ray tracking array, delayed Eγ, Iγ using EXOGAM HPGe Clover detectors; deduced event correlations between AGATA, VAMOS++ and EXOGAM, fragment mass distributions, deduced tracked Doppler corrected γ-ray spectra. ¹³²Te; deduced levels, J, π, isomeric transitions to demonstrate the performance of the new setup. ⁹⁴Y, ^122,124Sn, ^132,134Te; deduced isomeric transitions T_1/2.

doi: 10.1140/epja/i2017-12353-y
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2017MO15      Phys.Rev.Lett. 118, 192501 (2017)

D.Mondal, D.Pandit, S.Mukhopadhyay, S.Pal, B.Dey, S.Bhattacharya, A.De, S.Bhattacharya, S.Bhattacharyya, P.Roy, K.Banerjee, S.R.Banerjee

Experimental Determination of η/s for Finite Nuclear Matter

NUCLEAR REACTIONS ²⁷Al(α, X)³¹P, E=28, 35, 42 MeV; ⁹³Nb(α, X)⁹⁷Tc, E=28, 35, 42 MeV; ¹¹⁵In(α, X)¹¹⁹Sb, E=28, 35, 42, 50 MeV; ¹⁹⁷Au(α, X)²⁰¹Tl, E=35, 42, 50 MeV; measured reaction products, Eγ, Iγ; deduced yields, giant dipole resonance (GDR) energies and widths, the ratio of shear viscosity to entropy density for the finite nuclear matter at different temperatures. Comparison with available data.

doi: 10.1103/PhysRevLett.118.192501
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2017NA04      Phys.Lett. B 767, 480 (2017)

A.Navin, M.Rejmund, S.Bhattacharyya, R.Palit, G.H.Bhat, J.A.Sheikh, A.Lemasson, S.Bhattacharya, M.Caamano, E.Clement, O.Delaune, F.Farget, G.de France, B.Jacquot

Evolution of triaxial shapes at large isospin: Rh isotopes

NUCLEAR REACTIONS ⁹Be(²³⁸U, X)¹¹⁴Rh/¹¹⁵Rh/¹¹⁶Rh/¹¹⁷Rh/¹¹⁸Rh/¹¹⁹Rh, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level energies, J, π, energy signature splitting. Comparison with the Triaxial Projected Shell Model (TPSM) calculations.

doi: 10.1016/j.physletb.2016.11.020
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Data from this article have been entered in the XUNDL database. For more information, click here.

2017PA03      Phys.Rev. C 95, 034301 (2017)

D.Pandit, D.Mondal, B.Dey, S.Bhattacharya, S.Mukhopadhyay, S.Pal, A.De, S.R.Banerjee

Signature of clustering in quantum many-body systems probed by the giant dipole resonance

NUCLEAR REACTIONS ²⁸Si(α, γ), E=45 MeV; ¹²C(²⁰Ne, γ), E=145 MeV; measured high-energy GDR Eγ, Iγ, γ(θ), yields using a part of LAMBDA spectrometer at VECC-Kolkata cyclotron facility. ³²S; deduced GDR parameters, GDR strength functions, and compared with thermal shape fluctuation model (TSFM) calculations, cluster formation in superdeformed states of ³²S. ³¹P; deduced Coulomb spreading width to estimate isospin mixing.

doi: 10.1103/PhysRevC.95.034301
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2017PA18      Phys.Rev. C 95, 064603 (2017)

R.Pandey, S.Kundu, C.Bhattacharya, K.Banerjee, T.K.Rana, S.Manna, G.Mukherjee, J.K.Meena, A.Chaudhuri, T.Roy, P.Roy, Md.A.Asgar, V.Srivastava, A.Dey, M.Sinha, T.K.Ghosh, S.Bhattacharya, S.K.Pandit, K.Mahata, P.Patle, S.Pal, A.Shrivastava, V.Nanal

Fragment emission mechanism in the ³²S+¹²C reaction

NUCLEAR REACTIONS ¹²C(³²S, X), E=200, 220 MeV; measured two-dimensional spectra and double-differential σ(θ, E) of ^6,7Li, ^7,9Be, ^10,11B, C, N and O fragments at BARC-TIFR Pelletron-Linac facility; deduced average Q value and total cross sections of fragments, ¹⁶O/¹²C yield and σ(fragment)/σ(¹²C) as function of excitation energy. Comparison with theoretical calculations using extended Hauser-Feshbach model (EHFM).

doi: 10.1103/PhysRevC.95.064603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6308.

2017PA39      Phys.Rev. C 96, 044616 (2017)

S.K.Pandit, A.Shrivastava, K.Mahata, V.V.Parkar, R.Palit, N.Keeley, P.C.Rout, A.Kumar, K.Ramachandran, S.Bhattacharyya, V.Nanal, C.S.Palshetkar, T.N.Nag, S.Gupta, S.Biswas, S.Saha, J.Sethi, P.Singh, A.Chatterjee, S.Kailas

Investigation of large alpha production in reactions involving weakly bound ⁷Li

NUCLEAR REACTIONS ⁹³Nb(⁷Li, X)⁹²Zr/⁹³Nb/⁹⁴Nb/⁹⁵Nb/^93mMo/⁹⁴Mo/⁹⁵Mo/^95mMo/⁹⁵Tc/^95mTc/⁹⁶Tc/^96mTc/⁹⁷Tc/⁹⁶Ru/⁹⁷Ru/⁹⁸Ru, E=24, 26, 28, 30 MeV; measured Eγ, Iγ, γγ-coin, σ(E) for (t, n), (t, 2n), (t, 3n), (α, n), (α, 2n), (⁷Li, 2n), (⁷Li, 3n), (⁷Li, 4n), and (⁷Li, p2n) channels using INGA array at Pelletron-Linac facility in Mumbai; analyzed literature and present data for t-capture and inclusive α-production cross sections for ⁷Li projectiles incident on ²⁸Si, ^58,64Ni, ⁶⁵Cu, ⁹³Nb, ^118,124Sn, ¹⁵⁹Tb, ¹⁶⁵Ho, ¹⁹⁷Au, ¹⁹⁸Pt, ²⁰⁸Pb, and ²⁰⁹Bi targets. Comparison with statistical model calculations using PACE code, and angular momentum distribution from the coupled channel code CCFULL.

doi: 10.1103/PhysRevC.96.044616
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6313.

2017SE21      Phys.Rev. C 96, 064609 (2017)

A.Sen, T.K.Ghosh, S.Bhattacharya, K.Banerjee, C.Bhattacharya, S.Kundu, G.Mukherjee, A.Asgar, A.Dey, A.Dhal, M.M.Shaikh, J.K.Meena, S.Manna, R.Pandey, T.K.Rana, P.Roy, T.Roy, V.Srivastava, P.Bhattacharya

Fission fragment mass distributions from ²¹⁰Po and ²¹³At

NUCLEAR REACTIONS ²⁰⁶Pb, ²⁰⁹Bi(α, X)²¹⁰Po*/²¹³At*, E=37-55 MeV from K-130 cyclotron at VECC, Kolkata; measured fission fragments at two angles using two large area position sensitive multiwire proportional chambers (MWPC), fission σ(E), fission fragment mass distributions, correlated fission fragments by time correlations; deduced variation of the width of mass distribution with excitation energy, asymmetric mass distribution. Comparison with phenomenological statistical model predictions.

doi: 10.1103/PhysRevC.96.064609
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6315.

2017SR04      Int.J.Mod.Phys. E26, 1750064 (2017)

V.Srivastava, C.Bhattacharya, T.K.Rana, S.Manna, S.Kundu, S.Bhattacharya, K.Banerjee, P.Roy, R.Pandey, G.Mukherjee, T.K.Ghosh, J.K.Meena, T.Roy, A.Chaudhuri, M.Sinha, A.K.Saha, Md.A.Asgar, A.Dey, S.Roy, Md.M.Shaikh

Study of ²⁶Mg through 1p pick-up reaction ²⁷Al(d, ³He)

NUCLEAR REACTIONS ²⁷Al(d, ³He), E=25 MeV; measured reaction products; deduced excitation energy spectra, σ(θ), spectroscopic factors. Comparison with DWBA calculations.

doi: 10.1142/S0218301317500641
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6370. Data from this article have been entered in the XUNDL database. For more information, click here.

2016BA32      Phys.Rev. C 93, 064602 (2016)

K.Banerjee, T.K.Ghosh, P.Roy, S.Bhattacharya, A.Chaudhuri, C.Bhattacharya, R.Pandey, S.Kundu, G.Mukherjee, T.K.Rana, J.K.Meena, G.Mohanto, R.Dubey, N.Saneesh, P.Sugathan, R.Guin, S.Das, P.Bhattacharya

Fission dynamics study in ²⁴³Am and ²⁵⁴Fm

NUCLEAR REACTIONS ²³²Th, ²⁴³Am(¹¹B, F), E=56, 59, 61, 63, 66, 70, 74 MeV; measured fission fragment mass distributions, distribution of velocity of the fissioning nuclei, folding angle distribution of all the fission fragments, fission fragment angular anisotropies at 15UD Pelletron accelerator of IUAC-New Delhi; deduced departure from statistical saddle-point model predictions at near-barrier energies, and the presence of nonequilibrium fission processes.

doi: 10.1103/PhysRevC.93.064602
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