NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = S.Jehangir Found 24 matches. 2024DA06 Phys.Lett. B 851, 138565 (2024) Sh. Dar, S.Bhattacharyya, S.Chakraborty, S.Jehangir, S.Bhattacharya, G.H.Bhat, J.A.Sheikh, N.Rather, S.S.Nayak, S.Das, S.Basu, G.Mukherjee, S.Nandi, R.Banik, S.Basak, C.Bhattacharya, S.Chattopadhyay, S.Das Gupta, A.Karmakar, S.S.Ghugre, D.Kumar, D.Mondal, S.Mukhopadhyay, D.Pandit, S.Rajbanshi, R.Raut Coexistence of low-K oblate and high-K prolate g9/2 proton-hole bands in 115Sb NUCLEAR REACTIONS 115In(α, 4n), E=52 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, partial level scheme, positive parity sequence transitions, low-K decoupled band. Comparison with the frameworks of the projected shell model and the total Routhian surface calculations. The Indian National Gamma Array (INGA), the K-130 Cyclotron at Variable Energy Cyclotron Centre (VECC), Kolkata, India.
doi: 10.1016/j.physletb.2024.138565
2024RA11 J.Phys.(London) G51, 035104 (2024) A.K.Rana, S.Sihotra, H.P.Sharma, V.Singh, G.H.Bhat, S.Jehangir, J.A.Sheikh, N.Rather, Kuldeep, N.Singh, R.K.Bhowmik, R.Kumar, R.P.Singh, S.Muralithar, P.Chauhan, D.S.Verma, T.Trivedi, S.Kumar, R.Palit, D.Mehta Level structures of 96Tc and their microscopic description NUCLEAR REACTIONS 75As(28Si, 3n4p)96Tc, E=120 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, energy level, J, π, partial level scheme, high-spin states, DCO and IPDCO ratios, multipolarities. Comparison with the framework of triaxial projected shell model calculations. The 15UD Pelletron accelerator facility at inter university accelerator centre (IUAC), New Delhi.
doi: 10.1088/1361-6471/ad1f2e
2024RO03 Eur.Phys.J. A 60, 40 (2024) S.P.Rouoof, N.Nazir, S.Jehangir, G.H.Bhat, J.A.Sheikh, N.Rather, S.Frauendorf Fingerprints of the triaxial deformation from energies and B(E2) transition probabilities of γ-bands in transitional and deformed nuclei NUCLEAR STRUCTURE 154,156Gd, 156,158,160,162Dy, 164,166,170Er, 180Hf, 232Th, 238U, 76,78Se, 76Ge, 104,106,108Mo, 108,110,112,114Ru, 182,184,186,188,190,192Os, 192,194Pt; calculated energies and B(E2) transitions involving the states of the ground- and γ-bands in transitional and deformed nuclei using the triaxial projected shell model (TPSM) approach; deduced the emergence of the staggering phenomena in the transitions in the terms of interactions between the bands.
doi: 10.1140/epja/s10050-024-01257-y
2023CH32 J.Phys.(London) G50, 075106 (2023) S.Chakraborty, H.P.Sharma, S.Jehangir, S.S.Tiwary, C.Majumder, A.K.Gupta, G.H.Bhat, J.A.Sheikh, N.Rather, P.Banerjee, S.Ganguly, S.Rai, Pragati, S.Muralithar, R.P.Singh, S.S.Bhattacharjee, S.Kumar, Mayank, A.Kumar, R.Palit Three-quasineutron γ-band in 127Xe NUCLEAR REACTIONS 122Sn(9Be, 4n), E=48 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, J, π, partial level scheme, structures of negative parity multi-quasiparticle states, new negative parity bands. Comparison with the triaxial projected shell model (TPSM) approach. The Indian National Gamma Array (INGA), the 15UD pelletron accelerator facility at Inter-University Accelerator Centre (IUAC), New Delhi.
doi: 10.1088/1361-6471/acd86a
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(E2in)/B(E2out), B(M1in)/B(E2out). 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
2023NA07 Phys.Rev. C 107, L021303 (2023) N.Nazir, S.Jehangir, S.P.Rouoof, G.H.Bhat, J.A.Sheikh, N.Rather, S.Frauendorf Microscopic aspects of γ softness in atomic nuclei NUCLEAR STRUCTURE 104Ru; calculated levels, J, π, staggering parameter for γ-band, reduced E2 and M1 matrix elements - in-band, diagonal and interband, quadrupole shape invariants for ground state band and γ-band. Analysis show that admixtures of quasiparticle states into the collective vacuum configuration can transform the pattern of the energies and E2 matrix elements from γ-rigid to γ-soft character. Triaxial projected shell model (TPSM) approach. Comparison to data obtained in COULEX experiments and results of calculations performed in the framework of quadrupole collective Bohr Hamiltonian (QCBH) approach.
doi: 10.1103/PhysRevC.107.L021303
2023NA27 Phys.Rev. C 108, 044308 (2023) N.Nazir, S.Jehangir, S.P.Rouoof, G.H.Bhat, J.A.Sheikh, N.Rather, M.A.Malik Triaxial projected shell model approach for negative parity states in even-even nuclei
doi: 10.1103/PhysRevC.108.044308
2023PA23 Chin.Phys.C 47, 084002 (2023) A.Pandey, R.Bhushan, A.Rohilla, C.Majumder, H.P.Sharma, S.Chakraborty, R.P.Singh, S.Muralithar, Yashraj, K.Katre, B.Rohila, Subodh, A.Kumar, I.M.Govil, S.Jehangir, N.Rather, G.H.Bhati, A.A.Wani, J.A.Sheikh, S.K.Chamoli Revisiting band structures in 118Xe nucleus via in-beam γ-ray spectroscopy NUCLEAR REACTIONS 93Nb(28Si, 2np), E=115 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, J, π, partial level scheme, DCO ratios, B(E1), B(E1)/B(E2), high-spin states. Comparison with Triaxial projected shell model (TPSM). The 15 UD pelletron accelerator facility at IUAC, New Delhi.
doi: 10.1088/1674-1137/acd83d
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, T1/2 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
2022JE02 Phys.Rev. C 105, 054310 (2022) S.Jehangir, N.Nazir, G.H.Bhat, J.A.Sheikh, N.Rather, S.Chakraborty, R.Palit Extended triaxial projected shell model approach for odd-neutron nuclei NUCLEAR STRUCTURE 117,119,121,123,125,127,129,131Xe; calculated levels, J, π, amplitudes of projected K configurations, dynamic moments of inertia, transition quadrupole moments, aligned angular momenta, signature splitting for yrast and yrare bands. Triaxial projected shell model (TPSM) approach. Comparison to experimental data.
doi: 10.1103/PhysRevC.105.054310
2022KA31 Phys.Rev. C 106, 034323 (2022) K.Katre, P.V.Madhusudhana Rao, R.Raut, A.Sharma, K.Suryanarayana, A.Tejaswi, M.Ratna Raju, D.Vijaya Lakshmi, T.Seshi Reddy, M.Kumar Raju, S.Jehangir, N.Rather, G.H.Bhat, N.Nazir, J.A.Sheikh, Y.P.Wang, J.T.Matta, A.D.Ayangeakaa, U.Garg, S.S.Ghugre, T.Trivedi, B.S.Naidu, R.Palit, S.Saha, S.Muralithar, R.P.Singh Chiral-like doublet band structure and octupole correlations in 104Ag NUCLEAR REACTIONS 76Ge(32S, 3np)104Ag, E=110 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), level T1/2 by DSAM using INGA array of 18 Compton suppressed clover detectors at the 14-UD BARC-TIFR Pelletron Facility. 104Ag; deduced high-spin levels, J, π, multipolarities, bands, B(M1), B(E2), B(E1), B(M1)/B(E1), B(M1)/B(E2), spherical configurations, moment of inertia plots, alignments; calculated potential energy surface in the (β-γ) deformation plane, octupole correlations, enhanced E1 transitions, chiral-like doublet band. Comparison with theoretical calculations using triaxial projected shell model (TPSM) and covariant density functional theory (CDFT).
doi: 10.1103/PhysRevC.106.034323
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
2021BA04 Phys.Rev. C 103, 014316 (2021) F.S.Babra, S.Jehangir, R.Palit, S.Biswas, B.Das, S.Rajbanshi, G.H.Bhat, J.A.Sheikh, B.Das, P.Dey, U.Garg, Md.S.R.Laskar, C.Palshetkar, S.Saha, L.P.Singh, P.Singh Investigation of the alignment mechanism and loss of collectivity in 135Pm NUCLEAR REACTIONS 107Ag(32S, 2n2p)135Pm, E=145 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), half-lives of levels in the yrast band by Doppler-shift attenuation method (DSAM) using INGA array of 18 Compton-suppressed HPGe clover detectors at TIFR-Mumbai. 135Pm; deduced high-spin levels, J, π, multipolarities, rotational bands, alignments, configurations, B(E2), dynamic moment of inertia, loss of collectivity for the yrast band at higher spin. Comparison with triaxial projected shell model (TPSM) calculations.
doi: 10.1103/PhysRevC.103.014316
2021JE03 Phys.Rev. C 104, 044322 (2021) S.Jehangir, G.H.Bhat, N.Rather, J.A.Sheikh, R.Palit Systematic study of near-yrast band structures in odd-mass 125-137Pr and 127-139Pm isotopes NUCLEAR STRUCTURE 125,127,129,131,133,135,137Pr, 127,129,131,133,135,137,139Pm; calculated levels, J, π, bands, projected energies for bands, bandhead energies after configuration mixing and dominant intrinsic configurations, dominant probability contributions of projected configurations in the wave functions of the bandheads, aligned angular momenta, dynamic moments of inertia, probabilities of projected K-configurations in wave functions of the yrast bands for 127Pr and 131Pm. Triaxial projected shell-model (TPSM), including three- and five-quasiparticle configurations for odd-proton systems.
doi: 10.1103/PhysRevC.104.044322
2021JE05 Eur.Phys.J. A 57, 308 (2021) S.Jehangir, G.H.Bhat, J.A.Sheikh, S.Frauendorf, W.Li, R.Palit, N.Rather Triaxial projected shell model study of Formula-bands in atomic nuclei NUCLEAR STRUCTURE 154,156Gd, 156,158,160,162Dy, 164,166,168,170Er, 180Hf, 232Th, 238U, 104,106,108Mo, 108Ru, 110Ru, 112Ru, 114Ru; calculated stagerring parameters, J, γ-bands. Triaxial projected shell model (TPSM) approach.
doi: 10.1140/epja/s10050-021-00620-7
2021MU09 Phys.Rev. C 104, 064318 (2021) B.M.Musangu, E.H.Wang, J.H.Hamilton, S.Jehangir, G.H.Bhat, J.A.Sheikh, S.Frauendorf, C.J.Zachary, J.M.Eldridge, A.V.Ramayya, A.C.Dai, F.R.Xu, J.O.Rasmussen, Y.X.Luo, G.M.Ter-Akopian, Yu.Ts.Oganessian, S.J.Zhu Chiral vibrations and collective bands in 104, 106Mo RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, multi-fold γγ-coin, γγ(θ) using Gammasphere array of 101 Ge detectors at Lawrence Berkeley National Laboratory (LBNL). 104,106Mo; deduced high-spin levels, J, π, rotational bands, chiral vibrational doublet bands, multipolarities, multipole mixing ratios. Comparison with Triaxial projected shell model (TPSM) calculations.
doi: 10.1103/PhysRevC.104.064318
2021SH09 Phys.Rev. C 103, 024324 (2021) A.Sharma, R.Raut, S.Muralithar, R.P.Singh, S.S.Bhattacharjee, S.Das, S.Samanta, S.S.Ghugre, R.Palit, S.Jehangir, N.Rather, G.H.Bhat, J.A.Sheikh, S.S.Tiwary, Neelam, P.V.Madhusudhana Rao, U.Garg, S.K.Dhiman Evidence of antimagnetic rotational motion in 103Pd NUCLEAR REACTIONS 94Zr(13C, 4n)103Pd, E=55 MeV; measured Eγ, Iγ, half-lives of levels in the negative-parity yrast band by Doppler-shift attenuation method (DSAM) using the INGA array of 18 Compton suppressed HPGe clover detectors. 103Pd; deduced levels, J, π, B(E2), configurations, dynamic moment of inertia, antimagnetic rotational (AMR) band structure; calculated total Routhian surface (TRS) contour for the negative-parity yrast band in (β2cos(γ+30°), β2sin(γ+30°)) plane, and quasiparticle Routhians for proton and neutron using cranked-shell model. Comparison of spin versus angular frequency distribution and B(E2) values with tilted-axis cranked-shell model calculations based on the covariant density functional theory, and with semi-classical particle-rotor model calculations.
doi: 10.1103/PhysRevC.103.024324
2020JE04 Eur.Phys.J. A 56, 197 (2020) S.Jehangir, I.Maqbool, G.H.Bhat, J.A.Sheikh, R.Palit, N.Rather High-spin doublet band structures in odd-odd 194-200Tl isotopes NUCLEAR STRUCTURE 194,196,198,200Tl; calculated energy levels, J, π, projected energies, before band mixing of negative parity states, staggering, B(E2), B(M1). Comparison with experimental values.
doi: 10.1140/epja/s10050-020-00206-9
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
2019BA46 Phys.Rev. C 100, 054308 (2019) F.S.Babra, R.Palit, S.Rajbanshi, S.Jehangir, B.Das, G.H.Bhat, J.A.Sheikh, S.Biswas, U.Garg, Md.S.R.Laskar, C.Palshetkar, S.Saha, J.Sethi, P.Singh Investigation of a large change in deformation for the γ-soft nucleus 136Sm NUCLEAR REACTIONS 107Ag(32S, 2np)136Sm, E=145 MeV; measured Eγ, Iγ, two and higher-fold γγ-coin, half-lives of levels in the ground band by DSAM using the INGA array at TIFR-Mumbai accelerator facility. 136Sm; deduced levels, J, π, yrast and γ bands, transitional quadrupole moments, configurations; calculated total Routhian surfaces, proton and neutron quasiparticle energies in the framework of the cranked shell model and the triaxial projected shell-model (TPSM).
doi: 10.1103/PhysRevC.100.054308
2018JE01 Phys.Rev. C 97, 014310 (2018) S.Jehangir, G.H.Bhat, J.A.Sheikh, S.Frauendorf, S.N.T.Majola, P.A.Ganai, J.F.Sharpey-Schafer Quasiparticle and γ-band structures in 156Dy NUCLEAR STRUCTURE 156Dy; calculated levels, J, π, rotational bands, Routhians, B(E2), staggering parameter. Microscopic triaxial projected shell model (TPSM) approach and the quasiparticle random phase approximation (QRPA) based on the rotating mean field. Comparison with experimental data.
doi: 10.1103/PhysRevC.97.014310
2018NA22 Nucl.Phys. A979, 1 (2018) T.Naz, G.H.Bhat, S.Jehangir, S.Ahmad, J.A.Sheikh Microscopic description of structural evolution in Pd, Xe, Ba, Nd, Sm, Gd and Dy isotopes NUCLEAR STRUCTURE 96,98,100,102,104,106,108,110,112,114Pd, 128,130,132,134,136,138,140Xe, 126,128,130,132,134,136,138,140,142Ba, 142,144,146,148,150,152,154,156Nd, 144,146,148,150,152,154,156,158Sm, 146,148,150,152,154,156,158Gd, 148,150,152,154,156,158,160Dy; calculated Q, mass excess, potential energy surface vs quadrupole deformation, potential energy surface vs deformation in (β, nullg) plane using self-consistent Relativistic Hatree-Bogoliubov (RHB) formalism with DD-MM2 force supported by TPSM (TRiaxial Projected Shell Model).
doi: 10.1016/j.nuclphysa.2018.09.001
2017JE03 Nucl.Phys. A968, 48 (2017) S.Jehangir, G.H.Bhat, J.A.Sheikh, R.Palit, P.A.Ganai Intrinsic properties of high-spin band structures in triaxial nuclei NUCLEAR STRUCTURE 68,70Ge, 128,130,132,134Ce, 132,134,136,138Nd; calculated levels, J, π, g-factor, rotational and vibrational bands using TPSM (Triaxial Projected Shell Model). Compared with available data.
doi: 10.1016/j.nuclphysa.2017.08.001
2016SH38 Phys.Scr. 91, 063015 (2016) J.A.Sheikh, G.H.Bhat, W.A.Dar, S.Jehangir, P.A.Ganai Microscopic nuclear structure models and methods: chiral symmetry, wobbling motion and γ-bands NUCLEAR STRUCTURE 68Ge, 103,105Rh, 124,126,128,130,132Cs, 132,134Ce, 135Pr, 134,136,138Nd, 154,156,158,160,162,164Dy, 180Hf, 180Hg, 238U; calculated rotational bands, levels, J, π, B(E2) using TPSM (Triaxial Projected Shell Model) with both axial and nonaxial deformation. Compared with available data.
doi: 10.1088/0031-8949/91/6/063015
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