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NSR database version of April 11, 2024.

Search: Author = G.Mukherjee

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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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2024RO02      Appl.Radiat.Isot. 204, 111140 (2024)

A.S.Roy, K.Banerjee, P.Roy, R.Shil, R.Ravishankar, R.Datta, A.Sen, S.Manna, T.K.Ghosh, G.Mukherjee, T.K.Rana, S.Kundu, S.S.Nayak, R.Pandey, D.Paul, K.Atreya, S.Basu, S.Mukhopadhyay, D.Pandit, M.S.Kulkarni, C.Bhattacharya

Measurement of energy and directional distribution of neutron ambient dose equivalent for the ⁷Li(p, n)⁷Be reaction

NUCLEAR REACTIONS ⁷Li(p, n), E=7.9, 12 MeV; measured reaction products, En, In, TOF; deduced neutron fluence distributions, neutron ambient dose equivalents using the measured fluence distribution using ICRP (International Commission on Radiological Protection) recommended fluence to dose equivalent conversion coefficients.

doi: 10.1016/j.apradiso.2023.111140
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2023AT02      Phys.Rev. C 108, 034615 (2023)

K.Atreya, A.Sen, T.K.Ghosh, A.K.Nasirov, D.Paul, M.M.Shaikh, K.Banerjee, C.Bhattacharya, S.Kundu, S.Manna, G.Mukherjee, S.Nandi, R.Pandey, T.K.Rana, P.Roy, S.Mukhopadhyay, R.K.Santra

Exploring quasifission dynamics in reactions leading to the formation of ²²⁵Pa

doi: 10.1103/PhysRevC.108.034615
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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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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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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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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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2023NI05      Eur.Phys.J. A 59, 78 (2023)

A.L.Nichols, P.Dimitriou, A.Algora, M.Fallot, L.Giot, F.G.Kondev, T.Yoshida, M.Karny, G.Mukherjee, B.C.Rasco, K.P.Rykaczewski, A.A.Sonzogni, J.L.Tain

Improving fission-product decay data for reactor applications: part I-decay heat

NUCLEAR REACTIONS ²³⁵U, ^{238,239,240,241,242}Pu, ^241,242,243Am, ^243,245Cm(n, F), E thermal; ²³²Th, ^233,238U, ²³⁷Np(n, F), E fast; analyzed available data; deduced decay heat. Total Absorption Gamma-ray Spectroscopy (TAGS - sometimes abbreviated to TAS) and Discrete Gamma-ray Spectroscopy (DGS). This review has been carried out following similar work performed under the auspices of OECD/WPEC-Subgroup 25 (2005-2007) and the International Atomic Energy Agency (2009, 2014), and various highly relevant TAGS measurements completed as a consequence of such assessments.

doi: 10.1140/epja/s10050-023-00969-x
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2023SE16      Eur.Phys.J. A 59, 220 (2023)

M.T.Senthil Kannan, N.Ashok, S.S.Nayak, J.Sadhukhan, G.Mukherjee

Shape evolution of sub-lead neutron-rich nuclei around the neutron shell closure

NUCLEAR STRUCTURE ^{184,186,188,190,192,194,196,198,200,202,204,206,208,210,212}W, ^{186,188,190,192,194,196,198,200,202,204,206,208,210,212,214}Os, ^{188,190,192,194,196,198,200,202,204,206,208,210,212,214,216}Pt; calculated potential energy surfaces as a function of quadrupole moments, rms radii, pairing gaps, two-neutron separation energies, B(E2) using the state-of-the-art energy density functional framework .

doi: 10.1140/epja/s10050-023-01127-z
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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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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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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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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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2022NA23      Nucl.Phys. A1023, 122449 (2022)

S.S.Nayak, G.Mukherjee

Study of shape evolution of nuclei with 40≤Z≤48 and 50<N<60

NUCLEAR STRUCTURE ^94,96,98,100Mo, ^{98,100,102,104}Ru, ^102,104Pd, ^104,106Cd; calculated total Routhian surfaces (TRS) in the macroscopic-microscopic formalism; deduced an onset of deformation, shape evolution in these nuclei from a prolate-like γ-soft to a stable triaxial shape.

doi: 10.1016/j.nuclphysa.2022.122449
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2022NA28      Int.J.Mod.Phys. E31, 2250048 (2022)

S.S.Nayak, G.Mukherjee

Study of shape change in T = 1 triplet ⁷⁰Se, ⁷⁰Br and ⁷⁰Kr in microscopic-macroscopic approach

NUCLEAR STRUCTURE ⁷⁰Se, ⁷⁰Br, ⁷⁰Kr; calculated Total Routhian Surfaces (TRS), B(E2), deformation parameters; deduced possible shape coexistence, triaxiality. A Woods-Saxon potential with global set of parameters was used for obtaining the shell correction energy and the Strutinsky method.

doi: 10.1142/S0218301322500483
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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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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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2021DI04      Nucl.Data Sheets 173, 144 (2021)

P.Dimitriou, I.Dillmann, B.Singh, V.Piksaikin, K.P.Rykaczewski, J.L.Tain, A.Algora, K.Banerjee, I.N.Borzov, D.Cano-Ott, S.Chiba, M.Fallot, D.Foligno, R.Grzywacz, X.Huang, T.Marketin, F.Minato, G.Mukherjee, B.C.Rasco, A.Sonzogni, M.Verpelli, A.Egorov, M.Estienne, L.Giot, D.Gremyachkin, M.Madurga, E.A.McCutchan, E.Mendoza, K.V.Mitrofanov, M.Narbonne, P.Romojaro, A.Sanchez-Caballero, N.D.Scielzo

Development of a Reference Database for Beta-Delayed Neutron Emission

COMPILATION Z=2-87; compiled β-delayed neutron emission data; deduced total delayed neutron yields, time-dependent group parameters in 6- and 8-group representation, and aggregate delayed neutron spectra.

doi: 10.1016/j.nds.2021.04.006
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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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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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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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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6398.

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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2021RO07      Phys.Rev. C 103, 024602 (2021)

P.Roy, S.Mukhopadhyay, M.Aggarwal, D.Pandit, T.K.Rana, S.Kundu, T.K.Ghosh, K.Banerjee, G.Mukherjee, S.Manna, A.Sen, R.Pandey, D.Mondal, S.Pal, D.Paul, K.Atreya, C.Bhattacharya

Excitation energy and angular momentum dependence of the nuclear level density parameter around A ≈ 110

NUCLEAR REACTIONS ⁹³Nb(¹⁶O, X), E=116, 142, 160 MeV; ⁹³Nb(²⁰Ne, X), E=145, 180 MeV; measured E(n), I(n), Eγ, Iγ, nγ-coin, n(θ), time-of-flight using eight liquid-scintillator-based neutron detectors, and 50-element BaF₂ detector array for γ detection at the K130 cyclotron facility of VECC, Kolkata; deduced differential σ(E, θ), multiplicity of low-energy γ rays, excitation energy and temperature dependence of the inverse nuclear level density parameter, average angular momenta in the residual nuclei and inverse nuclear level density parameters. ¹⁰⁴Ag, ^107,108In, ^111,112Sb; deduced nuclear density parameters, and compared with microscopic statistical-model calculations.

doi: 10.1103/PhysRevC.103.024602
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2021RO09      Eur.Phys.J. A 57, 48 (2021)

P.Roy, K.Banerjee, T.K.Rana, S.Kundu, D.Pandit, N.Quang Hung, T.K.Ghosh, S.Mukhopadhyay, D.Mondal, G.Mukherjee, S.Manna, A.Sen, S.Pal, R.Pandey, D.Paul, K.Atreya, C.Bhattacharya

Nuclear level density and thermal properties of ¹¹⁵Sn from neutron evaporation

NUCLEAR REACTIONS ¹¹⁵In(p, n), E=9, 12 MeV; measured reaction products, Eγ, Iγ, En, In; deduced σ(θ), neutron energy spectra, nuclear level density. Comparison with with the microscopic Hartree-Fock BCS (HFBCS), Hartree-Fock-Bogoliubov plus combinatorial (HFB+C), TALYS nuclear model code.

doi: 10.1140/epja/s10050-021-00373-3
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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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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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Data from this article have been entered in the XUNDL database. For more information, click here.

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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2020GH08      Phys.Rev. C 102, 024328 (2020)

U.S.Ghosh, S.Rai, B.Mukherjee, A.Biswas, A.K.Mondal, K.Mandal, A.Chakraborty, S.Chakraborty, G.Mukherjee, A.Sharma, I.Bala, S.Muralithar, R.P.Singh

Spectroscopic investigation of complex nuclear excitations in ⁶⁶Ga

NUCLEAR REACTIONS ⁵²Cr(¹⁸O, 3np)⁶⁶Ga, E=72.5 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using the INGA array of 14 Compton-suppressed HPGe clover detectors at the 15-UD pelletron accelerator of IUAC-New Delhi. ⁶⁶Ga; deduced high-spin levels, J, π, bands, multipolarities, configurations. Comparison with shell model calculations with jj44bpn and jun45pn interactions using NUSHELLX@MSU code. Comparison with data in the ENSDF database, and with ⁶⁸Ga structure.

NUCLEAR STRUCTURE ⁶⁶Ga; calculated levels, J, π, occupation probabilities of the f_5/2, p_3/2, p_1/2, and g_9/2 orbitals for protons and neutrons, configurations with the highest probabilities using shell model with jj44bpn and jun45pn interactions and NUSHELLX@MSU code. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.024328
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2020LI32      Nucl.Data Sheets 168, 1 (2020)

J.Liang, B.Singh, E.A.McCutchan, I.Dillmann, M.Birch, A.A.Sonzogni, X.Huang, M.Kang, J.Wang, G.Mukherjee, K.Banerjee, D.Abriola, A.Algora, A.A.Chen, T.D.Johnson, K.Miernik

Compilation and Evaluation of Beta-Delayed Neutron Emission Probabilities and Half-Lives for Z > 28 Precursors

RADIOACTIVITY ^{73,74,75,76,77,78,79,80,81,82,83}Cu, ^{78,79,80,81,82,83,84,85}Zn, ^{79,80,81,82,83,84,85,86,87}Ga, ^{83,84,85,86,87,88,89,90}Ge, ^{84,85,86,87,88,89,90,91,92}As, ^{86,87,88,89,90,91,92,93,94,95}Se, ^{87,88,89,90,91,92,93,94,95,96,97,98}Br, ^{91,92,93,94,95,96,97,98,99,100,101}Kr, ^{91,92,93,94,95,96,97,98,99,100,101,102,103,104}Rb, ^{96,97,98,99,100,101,102,103,104,105,106,107}Sr, ^{97,98,99,100,101,102,103,104,105,106,107,108,109}Y, ^{103,104,105,106,107,108,109,110,111,112,113}Zr, ^{103,104,105,106,107,108,109,110,111,112,113,114,115,116}Nb, ^{109,110,111,112,113,114,115,116,117,118,119}Mo, ^{109,110,111,112,113,114,115,116,117,118,119,120,121,122}Tc, ^{114,115,116,117,118,119,120,121,122,123,124,125}Ru, ^{115,116,117,118,119,120,121,122,123,124,125,126,127,128}Rh, ^{119,120,121,122,123,124,125,126,127,128,129,130,131}Pd, ^{120,121,122,123,124,125,126,127,128,129,130,131,132}Ag, ^{126,127,128,129,130,131,132,133,134}Cd, ^{127,128,129,130,131,132,133,134,135,136,137}In, ^{133,134,135,136,137,138,139,140}Sn, ^{134,135,136,137,138,139,140,141,142}Sb, ^{136,137,138,139,140,141,142,143,144,145}Te, ^{137,138,139,140,141,142,143,144,145,146,147}I, ^{141,142,143,144,145,146,147,148,149,150}Xe, ^{141,142,143,144,145,146,147,148,149,150,151,152}Cs, ^{147,148,149,150,151,152,153,154}Ba, ^{147,148,149,150,151,152,153,154,155,156,157}La, ^{153,154,155,156,157,158}Ce, ^{153,154,155,156,157,158,159,160,161}Pr, ^{158,159,160,161,162,163}Nd, ^{159,160,161,162,163,164,165}Pm, ^{163,164,165,166,167}Sm, ^{165,166,167,168,169}Eu, ^169,170,171Gd, ^{169,170,171,172,173,174}Tb, ^174,175,176Dy, ^{174,175,176,177,178}Ho, ¹⁸⁰Er, ^179,180,181Tm, ¹⁸⁵Yb, ^186,187,188Lu, ^{191,192,193,194}Ta, ^198,199Re, ²⁰³Os, ^203,204,205Ir, ^206,207,208Pt, ^{206,207,208,209,210}Au, ^{209,210,211,212,213,214,215,216}Hg, ^{210,211,212,213,214,215,216,217}Tl, ^{219,220,221,222,223,224}Bi, ^{225,226,227,228,229}At, ²²³Fr(β^-); analyzed available data; deduced β-delayed neutron emission probabilities (Pn) and T_1/2 for known or potential β-delayed neutron precursors. Comparison with systematics using three different approaches.

doi: 10.1016/j.nds.2020.09.001
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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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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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2020RA28      Phys.Rev. C 102, 064313 (2020)

S.Rai, U.S.Ghosh, B.Mukherjee, A.Biswas, A.K.Mondal, K.Mandal, A.Chakraborty, S.Chakraborty, G.Mukherjee, A.Sharma, I.Bala, S.Muralithar, R.P.Singh

Evolution of collectivity and shape transition in ⁶⁶Zn

NUCLEAR REACTIONS ⁵²Cr(¹⁸O, 2n2p)⁶⁶Zn, E=72.5 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array of 14 Compton-suppressed HPGe Clover detectors at the tandem accelerator facility of IUAC-New Delhi. ⁶⁶Zn; deduced levels, J, π, multipolarities, configurations, alignments, terminating states, shape transitions; calculated total Routhian surfaces (TRS) based on Hartree-Fock-Bogoliuobov formalism.

doi: 10.1103/PhysRevC.102.064313
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2020RO22      Phys.Rev. C 102, 061601 (2020)

P.Roy, K.Banerjee, T.K.Rana, S.Kundu, S.Manna, A.Sen, D.Mondal, J.Sadhukhan, M.T.Senthil Kannan, T.K.Ghosh, S.Mukhopadhyay, D.Pandit, G.Mukherjee, S.Pal, D.Paul, K.Atreya, C.Bhattacharya

Evidence for the reduction of nuclear level density away from the β-stability line

NUCLEAR REACTIONS ¹¹⁵In(p, X)¹¹⁶Sn^*, E=9, 12 MeV; ¹¹²Sn(α, X)¹¹⁶Te^*, E=28 MeV; measured En, In, angular distribution of neutrons, prompt γ radiation, Eγ, Iγ, double-differential σ(E) using the time-of-flight (TOF) technique for neutrons, and a 50-element BaF₂ detector array for γ rays at the K130 cyclotron facility of VECC-Kolkata; deduced reduction of nuclear level density away from the β-stability line. Comparison with Hauser-Feshbach theoretical predictions using TALYS code with nuclear level density parameters from Gilbert-Cameron (GC), backshifted Fermi gas (BSFG), and generalized superfluid model (GSM). Prediction of level-density parameter compared with microscopic shell-model calculation with Woods-Saxon mean field.

doi: 10.1103/PhysRevC.102.061601
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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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2019GH09      Phys.Rev. C 100, 034314 (2019)

U.S.Ghosh, S.Rai, B.Mukherjee, A.Biswas, A.K.Mondal, K.Mandal, A.Chakraborty, S.Chakraborty, G.Mukherjee, A.Sharma, I.Bala, S.Muralithar, R.P.Singh

In-beam spectroscopic study of ⁶³Zn

NUCLEAR REACTIONS ⁵²Cr(¹⁸O, 3nα), E=72.5 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), linear polarization asymmetries using the INGA array with 14 Compton-suppressed HPGe clover detectors at the 15-UD pelletron accelerator of IUAC-New Delhi. ⁶³Zn; deduced high-spin levels, J, π; calculated total-Routhian surfaces (TRS) using Hartree-Fock-Bogoliubov approach. Comparison with shell-model calculations.

NUCLEAR STRUCTURE ⁶³Zn; calculated levels, J, π, proton and neutron orbitals occupation probabilities using shell model code NUSHELLX with jj44bpn interaction in the f_5/2pg_9/2 model space; calculated TRS, and collective excitations with triaxial and prolate shapes using a computer code based on Hartree-Fock-Bogoliubov approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.100.034314
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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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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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2019SA28      Phys.Rev. C 99, 054301 (2019)

S.Saha, R.Palit, J.Sethi, S.Biswas, P.Singh, S.Nag, A.K.Singh, I.Ragnarsson, F.S.Babra, U.Garg, A.Goswami, E.Ideguchi, H.C.Jain, S.Kumar, Md.S.R.Laskar, G.Mukherjee, Z.Naik, C.S.Palshetkar

Observation of rotation about the longest principal axis in ⁸⁹Zr

NUCLEAR REACTIONS ⁸⁰Se(¹³C, 4n), E=50, 60 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(polarization asymmetry), and level half-lives by DSAM using INGA array at TIFR accelerator facility. ⁸⁹Zr; deduced high-spin levels, J, π, multipolarities, dipole band, B(M1), configuration; calculated excitation energy relative to a rotating liquid drop energy as a function of spin, and total energy surface plots using cranked Nilsson-Strutinsky model.

doi: 10.1103/PhysRevC.99.054301
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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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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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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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2018RA15      Eur.Phys.J. A 54, 84 (2018)

S.Rai, B.Mukherjee, U.S.Ghosh, A.Biswas, A.Chakraborty, A.K.Mondal, S.Chakraborty, G.Mukherjee, I.Bala, R.P.Singh

High spin states in ⁶³Cu

NUCLEAR REACTIONS ⁵²Cr(¹⁸O, 2npα), E=72.5 MeV; measured Eγ, Iγ, γγ-coin using 14 Compton suppressed Ge clover detectors os INGA (Indian National Gamma-ray Array). ⁶³Cu; deduced γ-ray transitions, levels, J, π up to spin 25/2 and energy ≈ 8.36 MeV; calculated levels, J, π using shell model with two effective interactions; deduced major contributing configurations, proton and neutron orbitals occupation probabilities.

doi: 10.1140/epja/i2018-12518-2
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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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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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2017BI10      Phys.Rev. C 95, 064320 (2017)

S.Biswas, R.Palit, J.Sethi, S.Saha, A.Raghav, U.Garg, Md.S.R.Laskar, F.S.Babra, Z.Naik, S.Sharma, A.Y.Deo, V.V.Parkar, B.S.Naidu, R.Donthi, S.Jadhav, H.C.Jain, P.K.Joshi, S.Sihotra, S.Kumar, D.Mehta, G.Mukherjee, A.Goswami, P.C.Srivastava

High-spin states in ¹³³Cs and the shell model description

NUCLEAR REACTIONS ¹³⁰Te(⁷Li, 4n), E=45 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array of 15 Compton-suppressed HPGe clover detectors at TIFR-Mumbai accelerator facility. ¹³³Cs; deduced high-spin levels, J, π, multipolarities, bands, configurations. Comparison with large-scale shell model calculation using jj55pna interaction. Systematics of band structures in ^{127,129,131,133,135,137}Cs.

doi: 10.1103/PhysRevC.95.064320
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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.

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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2016CH34      Phys.Rev. C 94, 024617 (2016)

A.Chaudhuri, A.Sen, T.K.Ghosh, K.Banerjee, J.Sadhukhan, S.Bhattacharya, P.Roy, T.Roy, C.Bhattacharya, Md.A.Asgar, A.Dey, S.Kundu, S.Manna, J.K.Meena, G.Mukherjee, R.Pandey, T.K.Rana, V.Srivastava, R.Dubey, G.Kaur, N.Saneesh, P.Sugathan, P.Bhattacharya

Fission fragment mass distributions in reactions populating ²⁰⁰Pb

NUCLEAR REACTIONS ¹⁸⁴W(¹⁶O, X)²⁰⁰Pb*, E*=58.6, 64.1, 69.6, 75.2 MeV; ¹⁸¹Ta(¹⁹F, X)²⁰⁰Pb*, E*=59.6, 65.0, 70.4, 75.9 MeV; measured mass distributions of fission fragments as function of excitation energy, and mass angle distributions using sensitive multiwire proportional counters (MWPCs) and pulsed beams at 15UD Pelletron accelerator facility of IUAC-New Delhi; deduced no evidence for quasifission.

doi: 10.1103/PhysRevC.94.024617
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2016MA74      Phys.Rev. C 94, 051601 (2016)

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

Survival of cluster correlation in dissipative binary breakup of ^{24, 25}Mg^*

NUCLEAR REACTIONS ¹²C(¹²C, X)⁶Li/⁷Li/⁷Be/⁸Be/⁹Be, E=80 MeV; ¹²C(¹³C, X)⁶Li/⁷Li/⁷Be/⁸Be/⁹Be, E=78.5 MeV; measured energy distributions and angular distributions of the emitted fragments, 2α spectrum from ⁸Be, using telescopes of single-sided silicon strip detector (SSSD), and double-sided silicon strip detector (DSSD) at TIFR-BARC Pelletron-Linac facility; deduced cross section ratios, cluster correlations in the decay of the light compound systems ^24,25Mg formed in the two reactions. Comparison with statistical model calculations CASCADE and GEMINI++ codes.

doi: 10.1103/PhysRevC.94.051601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6271.

2016RA33      Phys.Rev. C 94, 044318 (2016)

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

Shears mechanism and development of collectivity in ¹⁴¹Sm

NUCLEAR REACTIONS ¹¹⁶Cd(³¹P, 5np), E=148 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ)(DCO), γγ(θ)(ADO), γγ(linear polarization), level half-lives by DSAM using the INGA array at TIFR Pelletron Linac facility. ¹⁴¹Sm; deduced high-spin levels, J, π, multipolarities, mixing ratios, configurations, B(M1), magnetic-dipole rotational (MR) band; calculated contour plots of TRS calculations for two bands. Comparison with principal axis cranking (SPAC) model calculation involving shears mechanism. Systematics of spin versus angular frequency plots for MR bands in ^139,141,142Sm, ¹⁴²Gd, ¹⁴³Eu.

doi: 10.1103/PhysRevC.94.044318
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2016RO31      Phys.Rev. C 94, 064607 (2016)

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

Excitation energy dependence of the level density parameter close to the doubly magic ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb, ²⁰⁹Bi(α, n), E=28, 31, 35, 40, 60 MeV; measured E(n), I(n), σ(θ, E), time-of-flight at Variable Energy Cyclotron Centre (VECC); deduced shell-damping parameter, inverse level density parameters and temperatures. Comparison with the Thomas-Fermi model predictions.

doi: 10.1103/PhysRevC.94.064607
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2016SI15      Pramana 87, 7 (2016)

R.P.Singh, P.Joshi, S.K.Chamoli, S.Muralithar, G.Mukherjee, R.K.Bhowmik, S.C.Pancholi

Lifetime measurements in the yrast band of the gamma-soft nuclei ¹³¹Ce and ¹³³Pr

NUCLEAR REACTIONS ¹¹⁹Sn(¹⁶O, 4n), E=86 MeV;¹¹⁸Sn(¹⁹F, 4n), E=92 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, transition quadrupole moments, T_1/2, nuclear shape implications. TRS calculations based on the cranked Hartree-Fock-Bogoliubov (CHFB) with Strutinsky's shell correction.

doi: 10.1007/s12043-016-1218-6
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2016SR02      Phys.Rev. C 93, 044601 (2016)

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

Experimental investigation of T=1 analog states of ²⁶Al and ²⁶Mg

NUCLEAR REACTIONS ²⁷Al(d, ³He)²⁶Mg, E=25 MeV; measured ³He spectra, σ(θ) at VECC, Kolkata. ²⁶Mg; deduced levels, J, π, spectroscopic factors of the lowest (T=1) states using zero-range distorted wave Born approximation. Comparison with T=1 analog states in ²⁶Al.

doi: 10.1103/PhysRevC.93.044601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD6267. Data from this article have been entered in the XUNDL database. For more information, click here.

2015CH26      Phys.Rev. C 91, 044620 (2015)

A.Chaudhuri, T.K.Ghosh, K.Banerjee, S.Bhattacharya, J.Sadhukhan, C.Bhattacharya, S.Kundu, J.K.Meena, G.Mukherjee, R.Pandey, T.K.Rana, P.Roy, T.Roy, V.Srivastava, P.Bhattacharya

Direct evidence of "washing out"' of nuclear shell effects

NUCLEAR REACTIONS ²³²Th(α, F), E=7.7, 25-65 MeV; measured fission fragments, fission σ(E), distributions of folding angles of the fissioning nuclei, fission fragment mass distributions as function of excitation energies at VECC, Kolkata facility; deduced width of fitted symmetric mass distribution, evidence for weakening of shell effect with increase in excitation energy.

doi: 10.1103/PhysRevC.91.044620
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2015CH55      Phys.Rev. C 92, 041601 (2015)

A.Chaudhuri, T.K.Ghosh, K.Banerjee, S.Bhattacharya, J.Sadhukhan, S.Kundu, C.Bhattacharya, J.K.Meena, G.Mukherjee, A.K.Saha, Md.A.Asgar, A.Dey, S.Manna, R.Pandey, T.K.Rana, P.Roy, T.Roy, V.Srivastava, P.Bhattacharya, D.C.Biswas, B.N.Joshi, K.Mahata, A.Shrivastava, R.P.Vind, S.Pal, B.R.Behera, V.Singh

No influence of a N=126 neutron-shell closure in fission-fragment mass distributions

NUCLEAR REACTIONS ¹⁹⁴Pt(¹²C, F)²⁰⁶Po*, ¹⁹⁸Pt(¹²C, F)²¹⁰Po*, E=58-78 MeV; measured fission fragment spectra, distributions of folding angles and mass distributions of complementary fission fragments using multi-wire proportional counters (MWPC) at BARC-TIFR Pelletron facility; deduced effect of shell correction in the saddle ridge on the mass distribution of fission fragments, no evidence for the modification of potential energy surface at the saddle point due to N=126 neutron shell closure in ²¹⁰Po.

doi: 10.1103/PhysRevC.92.041601
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2015GA39      Phys.Rev. C 92, 054325 (2015), Erratum Phys.Rev. C 100, 069901 (2019)

R.Garg, S.Kumar, M.Saxena, S.Goyal, D.Siwal, S.Kalkal, S.Verma, R.Singh, S.C.Pancholi, R.Palit, D.Choudhury, S.S.Ghugre, G.Mukherjee, R.Kumar, R.P.Singh, S.Muralithar, R.K.Bhowmik, S.Mandal

Negative-parity high-spin states and a possible magnetic rotation band in ¹³⁵₅₉Pr₇₆

NUCLEAR REACTIONS ¹²³Sb(¹⁶O, 4n), E=82 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array at IUAC-Delhi. ¹³⁵Pr; deduced high-spin levels, J, π, multipolarity, bands, magnetic-dipole band, configuration, B(M1)/B(E2). Comparison with tilted Axis Cranking (TAC) calculations by considering 3qp and 5qp configurations, and with structure ¹³⁷Pr.

doi: 10.1103/PhysRevC.92.054325
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2015GH05      Pramana 85, 291 (2015)

T.K.Ghosh, A.Chaudhuri, K.Banerjee, S.Bhattacharya, C.Bhattacharya, S.Kundu, G.Mukherjee, R.Pandey, T.K.Rana, P.Roy, T.Roy, V.Srivastava, P.Bhattacharya

Fusion-fission dynamics studies using mass distribution as a probe

NUCLEAR REACTIONS ²⁰⁹Bi(¹⁶O, X), E(cm)<85 MeV; ²³⁸U(¹¹B, X), ²³²Th(¹⁴N, X), E<60 MeV; measured fission products; deduced variance of mass distributions, mass distribution in fission, variation of the ratio (relative unit) of the symmetric fission yield to the total fission yield at different excitation energies.

doi: 10.1007/s12043-015-1043-3
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2015GO03      Phys.Rev. C 91, 014609 (2015)

M.Gohil, P.Roy, K.Banerjee, C.Bhattacharya, S.Kundu, T.K.Rana, T.K.Ghosh, G.Mukherjee, R.Pandey, H.Pai, V.Srivastava, J.K.Meena, S.R.Banerjee, S.Mukhopadhyay, D.Pandit, S.Pal, S.Bhattacharya

Angular momentum dependence of the nuclear level density in the A ≈ 170 - 200 region

NUCLEAR REACTIONS ¹⁶⁵Ho(α, X)¹⁶⁹Tm*, ¹⁸¹Ta(α, X)¹⁸⁵Re*, ¹⁹⁷Au(α, X)²⁰¹Tl*, E=28, 40 MeV; measured E(n), I(n), nγ-coin, n(θ), double differential σ(E) using TOF technique at VECC-Kolkata facility; analyzed γ-ray-fold-gated neutron using the statistical model code CASCADE; deduced variation of the inverse level density parameter with average angular momentum. ⁵⁸Ni, ⁹³Nb, ¹¹⁵In(α, X), E=30, 40 MeV; analyzed variation of the inverse level density parameter with average angular momentum using previous experimental data.

doi: 10.1103/PhysRevC.91.014609
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2015RA12      Phys.Lett. B 748, 387 (2015)

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

Antimagnetic rotation and sudden change of electric quadrupole transition strength in ¹⁴³Eu

NUCLEAR REACTIONS ¹¹⁶Cd(³¹P, 4n), E=148 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, level scheme, B(E2). Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2015.07.033
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2015RO20      Eur.Phys.J. A 51, 153 (2015)

T.Roy, G.Mukherjee, N.Madhavan, T.K.Rana, S.Bhattacharya, Md.A.Asgar, I.Bala, K.Basu, S.S.Bhattacharjee, C.Bhattacharya, S.Bhattacharya, S.Bhattacharyya, J.Gehlot, S.S.Ghugre, R.K.Gurjar, A.Jhingan, R.Kumar, S.Muralithar, S.Nath, H.Pai, R.Palit, R.Raut, R.P.Singh, A.K.Sinha, T.Varughese

A new high-spin isomer in ¹⁹⁵Bi

NUCLEAR REACTIONS ¹⁶⁹Tm(³⁰Si, 6n), E=168 MeV;¹⁶⁹Tm(³⁰Si, 4n), E=146 MeV; measured evaporation residues using HYRA (HYbrid Recoil mass Analyzer), Eγ, Iγ, γγ-coin; deduced γ energy spectrum, TAC spectrum, time spectrum gated by specific transition, γ ray multipolarity, J, π of initial and final states. ¹⁹⁵Bi deduced levels, J, π, new high spin isomeric state, isomer T_1/2. ¹⁹⁴Pb, ¹⁹⁵Bi calculated total Routhian Surface for different configurations, deformation. Isomer compared with other isomers in the region.

doi: 10.1140/epja/i2015-15153-5
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2015SR03      Phys.Rev. C 91, 054611 (2015)

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.Saha, Md.A.Asgar, A.Dey, S.Roy, Md.M.Shaikh

Experimental study of ²⁶Al through the 1n pick-up reaction ²⁷Al(d, t)

NUCLEAR REACTIONS ²⁷Al(d, t), E=25 MeV; measured E(t), I(t), σ(θ) at VECC-Kolkata facility. ²⁶Al; deduced levels, J, π, spectroscopic factors. DWBA calculations using DWUCK4 computer code. Comparison with experimental results from other particle-transfer experiments.

doi: 10.1103/PhysRevC.91.054611
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2014KA07      Eur.Phys.J. A 50, 5 (2014)

N.Kaur, A.Kumar, G.Mukherjee, A.Singh, S.Kumar, R.Kaur, V.Singh, B.R.Behera, K.P.Singh, G.Singh, H.P.Sharma, S.Kumar, M.K.Raju, P.V.M.Rao, S.Muralithar, R.P.Singh, R.Kumar, N.Madhvan, R.K.Bhowmik

High spin structure in ^{130, 131}Ba

NUCLEAR REACTIONS ¹²²Sn(¹³C, 5n), (¹³C, 4n), E=65 MeV; measured Eγ, Iγ(θ), γγ-coin using INGA Compton-suppressed clover detectors. ^130,131Ba deduced levels, J, π, high spin states, γ transitions, band crossing, deformation, bands alignment. ¹³¹Ba deduced asymmetry parameter using ¹⁵²Eu source.

doi: 10.1140/epja/i2014-14005-2
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2014MA51      Nucl.Data Sheets 120, 78 (2014)

T.Martinez, D.Cano-Ott, J.Castilla, A.R.Garcia, J.Marin, G.Martinez, E.Mendoza, C.Santos, F.J.Tera, D.Villamarin, J.Agramunt, A.Algora, C.Domingo, M.D.Jordan, B.Rubio, J.L.Tain, C.Bhattacharya, K.Banerjee, S.Bhattacharya, P.Roy, J.K.Meena, S.Kundu, G.Mukherjee, T.K.Ghosh, T.K.Rana, R.Pandey, A.Saxena, B.Behera, H.Penttila, A.Jokinen, S.Rinta-Antila, C.Guerrero, M.C.Ovejero

MONSTER: a TOF Spectrometer for β-delayed Neutron Spectroscopy

doi: 10.1016/j.nds.2014.07.011
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2014PA53      Phys.Rev. C 90, 064314 (2014)

H.Pai, G.Mukherjee, S.Bhattacharyya, C.Bhattacharya, S.Bhattacharya, T.Bhattacharjee, S.K.Basu, S.Kundu, T.K.Ghosh, K.Banerjee, T.K.Rana, J.K.Meena, R.K.Bhowmik, R.P.Singh, S.Muralithar, S.Chanda, R.Garg, B.Maheshwari, D.Choudhury, A.K.Jain

Crossing of large multiquasiparticle magnetic-rotation bands in ¹⁹⁸Bi

NUCLEAR REACTIONS ¹⁸⁵Re(¹⁶O, 3n), ¹⁸⁷Re(¹⁶O, 5n), E=112.5 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(lin pol) using INGA array at 15-UD Pelletron at IUAC facility. Natural Re target. ¹⁹⁸Bi; deduced high-spin levels, J, π, multipolarity, bands, multiquasiparticle (qp) configurations, alignments, B(M1). Comparison with tilted-axis cranking (TAC) calculations, and with ¹⁹⁷Bi and ¹⁹⁷Pb bands. Semiclassical formalism, particle-hole interaction strength

doi: 10.1103/PhysRevC.90.064314
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2014RA03      Phys.Rev. C 89, 014315 (2014)

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

Shape coexistence in the near-spherical ¹⁴²Sm nucleus

NUCLEAR REACTIONS ¹¹⁶Cd(³¹P, 4np), E=148 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), γγ(θ)(DCO), γ(θ)(ADO), γγ(linear polarization), level half-lives by DSAM and isomer half-lives by γ(t) using INGA array at TIFR-BARC Pelletron Linac facility. ¹⁴²Sm; deduced high-spin levels, J, π, multipolarity, bands, magnetic dipole rotational band, B(M1), B(E2), configurations; calculated total energy surfaces contours in β₂-γ plane. Comparison with shell model, cranked Nilsson-Strutinsky (CNS), and semiclassical principle axis cranking (SPAC) model calculations.

doi: 10.1103/PhysRevC.89.014315
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2014RA18      Phys.Rev. C 90, 024318 (2014)

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

Multiple magnetic rotational bands based on proton alignment in ¹⁴³Eu

NUCLEAR REACTIONS ¹¹⁶Cd(³¹P, 4n), E=148 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), γγ(linear polarization), level half-lives by DSAM using INGA array at TIFR Pelletron facility. ¹⁴³Eu; deduced high-spin levels, J, π, B(M1), multipolarities, magnetic-dipole (shears) rotational bands, configurations. Principal axis cranking model, and TRS calculations.

doi: 10.1103/PhysRevC.90.024318
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2013DA15      Phys.Rev. C 88, 044328 (2013)

S.Das Gupta, S.Bhattacharyya, H.Pai, G.Mukherjee, S.Bhattacharya, R.Palit, A.Shrivastava, A.Chatterjee, S.Chanda, V.Nanal, S.K.Pandit, S.Saha, J.Sethi, S.Thakur

High spin spectroscopy of ²⁰¹Tl

NUCLEAR REACTIONS ¹⁹⁸Pt(⁷Li, 4n)²⁰¹Tl, E=45 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) using INGA array at BARC-TIFR facility. ²⁰¹Tl; deduced high-spin levels, J, π, multipolarity, bands, alignments. Comparison with total Routhian surface calculations. Systematics of level structures in ^{193,195,197,199,201}Tl nuclei, and comparison with ground band in ²⁰⁰Hg.

NUCLEAR STRUCTURE ²⁰¹Tl; calculated total Routhian surfaces in (β, γ) plane by Strutinsky shell correction method using deformed Woods-Saxon potential with BCS pairing for single-particle energies.

doi: 10.1103/PhysRevC.88.044328
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2013PA42      Phys.Rev. C 88, 064302 (2013)

H.Pai, G.Mukherjee, S.Bhattacharya, C.Bhattacharya, S.Bhattacharyya, T.Bhattacharjee, S.Chanda, S.Rajbanshi, A.Goswami, M.R.Gohil, S.Kundu, T.K.Ghosh, K.Banerjee, T.K.Rana, R.Pandey, G.K.Prajapati, S.R.Banerjee, S.Mukhopadhyay, D.Pandit, S.Pal, J.K.Meena, P.Mukhopadhyay, A.Choudhury

Band structures and intruder π_12/2 state in ¹⁹⁷Tl

NUCLEAR REACTIONS ¹⁹⁷Au(α, 4n)¹⁹⁷Tl, E=48 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization) at VECC, Kolkata ¹⁹⁷Tl; deduced high-spin levels, J, π, multipolarity, bands, alignments; calculated Total Routhian surface (TRS) contour in (β₂, γ) plane. Evidence for a possible intruder πi_13/2 state. Systematics of band alignments in ^193,195,197Tl.

doi: 10.1103/PhysRevC.88.064302
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2013RA20      Phys.Rev. C 88, 021601 (2013); Pub.note Phys.Rev. C 88, 029904 (2013)

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

Estimation of direct components of the decay of the Hoyle state

NUCLEAR REACTIONS ¹²C(α, α'), E=60 MeV; measured α spectra at VECC, Kolkata facility. High statistics experiment for complete kinematical measurement. Dalitz plot. ¹²C; deduced contribution of direct 3α decay mechanisms (DDE, DDL, DDΦ) of decay of Hoyle state, nonzero branching ratios for direct decay in phase space (DDΦ mode). Comparison with previous experimental results.

doi: 10.1103/PhysRevC.88.021601
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2013RO24      Phys.Rev. C 88, 031601 (2013)

P.Roy, K.Banerjee, M.Gohil, C.Bhattacharya, S.Kundu, T.K.Rana, T.K.Ghosh, G.Mukherjee, R.Pandey, H.Pai, V.Srivastava, J.K.Meena, S.R.Banerjee, S.Mukhopadhyay, D.Pandit, S.Pal, S.Bhattacharya

Effect of collectivity on the nuclear level density

NUCLEAR REACTIONS ¹⁶⁵Ho(α, xn)¹⁶⁹Tm*, E=28, 40 MeV; ¹⁸¹Ta(α, xn)¹⁸⁵Re*, E=30, 40 MeV; ¹⁹⁷Au(α, xn)²⁰¹Tl, E=28, 40 MeV; measured back-angle neutron evaporation spectra (mainly 2n- and 3n-channel) from compound nuclei, double-differential σ(E); deduced inverse level density parameter, dependence of this parameter on deformation of compound nucleus, signature of collectivity. Comparison of measured σ(E) with statistical model calculation using GEMINI++ computer code.

doi: 10.1103/PhysRevC.88.031601
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2013SI17      Nucl.Data Sheets 114, 661 (2013)

B.Singh, D.Abriola, C.Baglin, V.Demetriou, T.Johnson, E.McCutchan, G.Mukherjee, S.Singh, A.Sonzogni, J.Tuli

Nuclear Data Sheets for A = 211

COMPILATION ²¹¹Hg, ²¹¹Tl, ²¹¹Pb, ²¹¹Bi, ²¹¹Po, ²¹¹At, ²¹¹Rn, ²¹¹Fr, ²¹¹Ra, ²¹¹Ac, ²¹¹Th, ²¹¹Pa; compiled evaluated nuclear structure data.

doi: 10.1016/j.nds.2013.05.001
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2013SI31      Nucl.Data Sheets 114, 2023 (2013)

B.Singh, G.Mukherjee, D.Abriola, S.K.Basu, P.Demetriou, A.Jain, S.Kumar, S.Singh, J.Tuli

Nuclear Data Sheets for A = 215

COMPILATION ²¹⁵Hg, ²¹⁵Tl, ²¹⁵Pb, ²¹⁵Bi, ²¹⁵Po, ²¹⁵At, ²¹⁵Rn, ²¹⁵Fr, ²¹⁵Ra, ²¹⁵Ac, ²¹⁵Th, ²¹⁵Pa; compiled, evaluated nuclear structure data.

doi: 10.1016/j.nds.2013.11.003
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2012BA26      Phys.Rev. C 85, 064310 (2012)

K.Banerjee, S.Bhattacharya, C.Bhattacharya, M.Gohil, S.Kundu, T.K.Rana, G.Mukherjee, R.Pandey, P.Roy, H.Pai, A.Dey, T.K.Ghosh, J.K.Meena, S.Mukhopadhyay, D.Pandit, S.Pal, S.R.Banerjee

Variation of nuclear level density with angular momentum

NUCLEAR REACTIONS ¹¹⁵In(α, X)¹¹⁹Sb*, E=30, 42 MeV; measured Eγ, E(n), nγ-coin, γ-ray fold distribution, angular distribution of neutrons, average angular momentum, inverse level-density parameter, temperature, time of flight. Comparison with statistical model calculations.

doi: 10.1103/PhysRevC.85.064310
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2012DE22      Phys.Scr. T150, 014011 (2012)

A.Dey, S.Kundu, T.K.Rana, K.Banerjee, C.Bhattacharya, M.Biswas, T.K.Ghosh, H.Pai, G.Mukherjee, J.K.Meena, D.Gupta, S.Bhattacharya, S.Mukhopadhyay, D.Pandit, S.R.Banerjee, S.Kumar, A.Chatterjee, K.Ramachandran, K.Mahata, S.Santra, S.Pandit

Study of the 1p transfer channel in the ¹²C + ²⁷Al reaction at 6-7 MeV per nucleon

NUCLEAR REACTIONS ²⁷Al(¹²C, ¹¹B)²⁸Si, E=73, 81, 85 MeV; measured reaction products. ²⁸Si; deduced σ, σ(θ), spectroscopic factors for different excited states. ECIS94 and distorted-wave Born approximation, comparison with available data.

doi: 10.1088/0031-8949/2012/T150/014011
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2012KU19      Phys.Rev. C 85, 064607 (2012)

S.Kundu, C.Bhattacharya, K.Banerjee, T.K.Rana, S.Bhattacharya, A.Dey, T.K.Ghosh, G.Mukherjee, J.K.Meena, P.Mali, S.Mukhopadhyay, D.Pandit, H.Pai, S.R.Banerjee, D.Gupta, P.Banerjee, Suresh Kumar, A.Shrivastava, A.Chatterjee, K.Ramachandran, K.Mahata, S.K.Pandit, S.Santra

Complex-fragment emission in low-energy light-ion reactions

NUCLEAR REACTIONS ²⁸Si(¹²C, X), E=77 MeV; ²⁸Si(¹¹B, X), E=64 MeV; ²⁷Al(¹²C, X), E=73 MeV; measured particle spectra for Z=3-5 fragments, fragment σ(E, θ, Z), total fusion-fission fragment and deep inelastic fragment cross sections, angular distribution of deep inelastic fragments; deduced average Q values, angular momentum dissipation factor with fragment. Comparison with theoretical predictions from statistical model.

doi: 10.1103/PhysRevC.85.064607
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2012MU03      Phys.Lett. B 709, 9 (2012)

S.Mukhopadhyay, D.Pandit, S.Pal, S.Bhattacharya, A.De, S.Bhattacharya, C.Bhattacharya, K.Banerjee, S.Kundu, T.K.Rana, G.Mukherjee, R.Pandey, M.Gohil, H.Pai, J.K.Meena, S.R.Banerjee

Measurement of giant dipole resonance width at low temperature: A new experimental perspective

NUCLEAR REACTIONS ¹¹⁵In(α, X)¹¹⁹Sb, E=30, 35, 42 MeV; measured reaction products, Eγ, Iγ, En, In; deduced yields, Giant Dipole Resonance width and bremsstrahlung parameters. Comparison with predictions of thermal shape fluctuation model.

doi: 10.1016/j.physletb.2012.01.059
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2012PA16      Phys.Rev. C 85, 064313 (2012)

H.Pai, G.Mukherjee, S.Bhattacharyya, M.R.Gohil, T.Bhattacharjee, C.Bhattacharya, R.Palit, S.Saha, J.Sethi, T.Trivedi, S.Thakur, B.S.Naidu, S.K.Jadav, R.Donthi, A.Goswami, S.Chanda

High spin band structures in doubly odd ¹⁹⁴Tl

NUCLEAR REACTIONS ^185,187Re(¹³C, xn)¹⁹⁴Tl, E=75 MeV; measured Eγ, Iγ, γγ-coin, DCO, γγ(linear pol) using the INGA array. ¹⁹⁴Tl; deduced high-spin levels, J, π, configurations, bands, multipolarity, alignments, moments of inertia, band crossing, magnetic-dipole (shears) rotational band. Comparison with total Routhian surfaces (TRS) using the cranked shell model. Comparison with semi-classical calculations for magnetic-dipole band. Systematics of band structures in ^{190,192,194,196,198}Tl.

doi: 10.1103/PhysRevC.85.064313
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2012PA18      Phys.Rev. C 85, 064317 (2012)

H.Pai, G.Mukherjee, R.Raut, S.K.Basu, A.Goswami, S.Chanda, T.Bhattacharjee, S.Bhattacharyya, C.Bhattacharya, S.Bhattacharya, S.R.Banerjee, S.Kundu, K.Banerjee, A.Dey, T.K.Rana, J.K.Meena, D.Gupta, S.Mukhopadhyay, S.Bhattacharya, S.Bhattacharya, S.Ganguly, R.Kshetri, M.K.Pradhan

Onset of deformation at N = 112 in Bi nuclei

NUCLEAR REACTIONS ¹⁸¹Ta(²⁰Ne, 6n)¹⁹⁵Bi, E=130 MeV; measured Eγ, Iγ, γγ-coin, delayed γγ-coin, DCO, γγ(linear pol) using the INGA array. ¹⁹⁵Bi; deduced high-spin levels, J, π, multipolarity, bands, configurations. Comparison with total Routhian surface calculations using Woods-Saxon potential. Systematics of level energies in A=190-206 odd-odd Bi nuclei and even-even Pb nuclei. Discussed nuclear shape, and onset of deformation.

doi: 10.1103/PhysRevC.85.064317
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2012RO35      Phys.Rev. C 86, 044622 (2012)

P.Roy, K.Banerjee, S.Bhattacharya, C.Bhattacharya, S.Kundu, T.K.Rana, T.K.Ghosh, G.Mukherjee, R.Pandey, J.K.Meena, M.Gohil, H.Pai, V.Srivastava, A.Dey, D.Pandit, S.Mukhopadhyay, S.Pal, S.R.Banerjee

Angular-momentum-gated light-particle evaporation spectra from ⁹⁷Tc^* and ⁶²Zn^* systems

NUCLEAR REACTIONS ⁵⁸Ni, ⁹³Nb(α, X), E=35 MeV; measured neutron, proton and α spectra, particle-γ coin, energy loss, time of flight, fold distribution, angular momentum distribution, differential σ at VECC facility; deduced average angular momentum, level density. Comparison with statistical model calculations.

doi: 10.1103/PhysRevC.86.044622
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2012SA36      Phys.Rev. C 86, 034315 (2012)

S.Saha, R.Palit, J.Sethi, T.Trivedi, P.C.Srivastava, S.Kumar, B.S.Naidu, R.Donthi, S.Jadhav, D.C.Biswas, U.Garg, A.Goswami, H.C.Jain, P.K.Joshi, G.Mukherjee, Z.Naik, S.Nag, V.Nanal, R.G.Pillay, S.Saha, A.K.Singh

Experimental investigation of shell-model excitations of ⁸⁹Zr up to high spin

NUCLEAR REACTIONS ⁸⁰Se(¹³C, 4n)⁸⁹Zr, E=50 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear pol) using INGA array at TIFR Pelletron facility. ⁸⁹Zr; deduced high-spin levels, J, π, multipolarity, configuration. Comparison with shell-model calculations.

NUCLEAR STRUCTURE ⁸⁹Zr; calculated levels, J, π, wave functions, configurations using shell-model with JUN45 and jj44b interactions.

doi: 10.1103/PhysRevC.86.034315
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2011BA46      J.Korean Phys.Soc. 59, 1518s (2011)

S.Kr.Basu, G.Mukherjee, A.A.Sonzogni

Mass Chain Evaluation for A = 95

NUCLEAR STRUCTURE ⁹⁵Br, ⁹⁵Kr, ⁹⁵Rb, ⁹⁵Sr, ⁹⁵Y, ⁹⁵Zr, ⁹⁵Nb, ⁹⁵Mo, ⁹⁵Tc, ⁹⁵Ru, ⁹⁵Rh, ⁹⁵Pd, ⁹⁵Ag; compiled, evaluated level properties, other nuclear data in ENSDF format.

doi: 10.3938/jkps.59.1518
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2011BH01      J.Phys.(London) G38, 035105 (2011)

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

Energy levels in ¹⁴¹Nd from fusion evaporation study

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

doi: 10.1088/0954-3899/38/3/035105
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2011KA37      Phys.Rev. C 84, 064321 (2011)

D.Kanjilal, S.Saha, S.Bhattacharya, A.Goswami, R.Kshetri, R.Raut, S.Muralithar, R.P.Singh, G.Mukherjee, B.Mukherjee

First observation of high spin states and isomeric decay in ²¹⁰Fr

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁶O, 3n), E=88, 94, 100 MeV; measured Eγ, Iγ, γγ-coin, DCO ratio, excitation functions, isomer half-life, DSA using INGA array. ²¹⁰Fr; deduced levels, J, π, multipolarity, mixing ratio, half-lives, high spins, B(M1), B(E2), configuration. ¹⁹⁷Au(¹⁶O, 4n), E=88, 94, 100 MeV; measured Eγ, Iγ, excitation functions. ²⁰⁹Fr; measured isomer half-life. Systematics of levels in ^{206,208,210,212}Fr.

doi: 10.1103/PhysRevC.84.064321
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2011KE04      J.Korean Phys.Soc. 59, 1455s (2011)

M.A.Kellett, M.-M.Be, V.Chechev, X.Huang, F.G.Kondev, A.Luca, G.Mukherjee, A.L.Nichols, A.Pearce

New IAEA Actinide Decay Data Library

COMPILATION Z=81-98; compiled ENDF, ENSDF, DDEP decay data; deduced measurement requirements.

doi: 10.3938/jkps.59.1455
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2011PA26      Phys.Rev. C 84, 041301 (2011)

H.Pai, G.Mukherjee, A.Raghav, R.Palit, C.Bhattacharya, S.Chanda, T.Bhattacharjee, S.Bhattacharyya, S.K.Basu, A.Goswami, P.K.Joshi, B.S.Naidu, Sushil K.Sharma, A.Y.Deo, Z.Naik, R.K.Bhowmik, S.Muralithar, R.P.Singh, S.Kumar, S.Sihotra, D.Mehta

Structural change of the unique-parity πh_11/2(X)νh_11/2 configuration in ¹³⁴Cs

NUCLEAR REACTIONS ¹³⁰Te(¹¹B, 3nα), E=52 MeV; ¹³⁰Te(⁷Li, 3n), E=30 MeV; measured Eγ, Iγ, γγ-coin, DCO ratio. ¹³⁴Cs; deduced levels, J, π, multipolarity, band, configurations. Total Routhian surface and the tilted-axis cranking calculations.

doi: 10.1103/PhysRevC.84.041301
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