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NSR database version of April 27, 2024.

Search: Author = N.Rather

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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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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
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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, ^{156,158,160,162}Dy, ^164,166,170Er, ¹⁸⁰Hf, ²³²Th, ²³⁸U, ^76,78Se, ⁷⁶Ge, ^104,106,108Mo, ^{108,110,112,114}Ru, ^{182,184,186,188,190,192}Os, ^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
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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
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2023MU10      Phys.Rev. C 107, 054310 (2023)

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

Evidence of transverse wobbling motion in ¹⁵¹Eu

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

doi: 10.1103/PhysRevC.107.054310
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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
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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
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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
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2022BH04      Phys.Rev. C 106, 044312 (2022)

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

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

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

doi: 10.1103/PhysRevC.106.044312
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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 ^{117,119,121,123,125,127,129,131}Xe; 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
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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 T_1/2 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
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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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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 ^{125,127,129,131,133,135,137}Pr, ^{127,129,131,133,135,137,139}Pm; 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
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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, ^{156,158,160,162}Dy, ^{164,166,168,170}Er, 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
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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
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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 ^{194,196,198,200}Tl; 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
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2017BA06      Ukr.J.Phys. 62, 12 (2017)

W.Bari, N.A.Rather

Sensitivity of Multiplicity Fluctuations to Rapidity in High-Energy Nucleus-Nucleus Interactions

NUCLEAR REACTIONS Ag(²⁸Si, X), E=4.5 GeV; measured reaction products; deduced multiplicity fluctuations. Comparison with FRITIOF model.

doi: 10.15407/ujpe62.01.0012
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2017DA10      Phys.Rev. C 95, 051301 (2017)

B.Das, N.Rather, P.Datta, S.Chattopadhyay, S.Rajbanshi, A.Goswami, S.Roy, S.Pal, R.Palit, S.Saha, J.Sethi, S.Biswas, P.Singh, H.C.Jain

Novel evolution of the positive parity shears band in ¹⁰⁶Ag

NUCLEAR REACTIONS ⁹⁶Zr(¹⁴N, 4n), E=68 MeV; measured Eγ, Iγ, two and higher-fold γγ-coin, γγ(θ)(DCO), level half-lives by DSAM and line-shape analysis using INGA array at Pelletron-LINAC facility of TIFR-Mumbai. ¹⁰⁶Ag; deduced high-spin levels, J, π, multipolarities, mixing ratios, B(M1), B(E2), bands, magnetic rotational (shears) band, configurations, Routhians. Comparison with shears mechanism principal axis cranking (SPAC) model.

doi: 10.1103/PhysRevC.95.051301
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2016DA03      Phys.Rev. C 93, 064322 (2016)

B.Das, N.Rather, S.Chattopadhyay, S.Rajbanshi, A.Goswami, P.Datta, S.Roy, R.Palit, S.Pal, S.Saha, J.Sethi, S.Biswas, P.Singh, H.C.Jain

Three proton hole structure in ¹⁰⁶Ag

NUCLEAR REACTIONS ⁹⁶Zr(¹⁴N, 4n), E=68 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), level half-lives by DSAM using INGA array at 14-UD Pelletron facility of TIFR-BARC. ¹⁰⁶Ag; deduced high-spin levels, J, π, multipolarities, B(M1), B(E2), configuration, magnetic-dipole rotational band. Comparison with Routhian calculations, and shears mechanism with the principal axis cranking (SPAC) calculation.

doi: 10.1103/PhysRevC.93.064322
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2014RA10      Phys.Rev.Lett. 112, 202503 (2014)

N.Rather, P.Datta, S.Chattopadhyay, S.Rajbanshi, A.Goswami, G.H.Bhat, J.A.Sheikh, S.Roy, R.Palit, S.Pal, S.Saha, J.Sethi, S.Biswas, P.Singh, H.C.Jain

Exploring the Origin of Nearly Degenerate Doublet Bands in ¹⁰⁶Ag

NUCLEAR REACTIONS ⁹⁶Zr(¹⁴N, 4n), E=68 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced bands, level scheme, J, π, lifetimes, B(E2), B(M1), mixing and branching ratios. Comparison with available data and systematics.

doi: 10.1103/PhysRevLett.112.202503
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2014RA11      Phys.Rev. C 89, 061303 (2014)

N.Rather, S.Roy, P.Datta, S.Chattopadhyay, A.Goswami, S.Nag, R.Palit, S.Pal, S.Saha, J.Sethi, T.Trivedi, H.C.Jain

Antimagnetic rotation in ¹⁰⁴Pd

NUCLEAR REACTIONS ⁹⁶Zr(¹³C, 5n), E=63 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by DSA using INGA array at 14-UD Pelletron at TIFR. ¹⁰⁴Pd; deduced levels, J, π, B(E2), variation of B(E2) with angular momentum. Comparison with semiclassical particle plus rotor model calculations, and interpretation of yrast band members in terms of anti-magnetic rotation.

doi: 10.1103/PhysRevC.89.061303
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2012RO08      Phys.Lett. B 710, 587 (2012)

S.Roy, N.Rather, P.Datta, S.Chattopadhyay, R.A.Bark, S.Pal, S.Bhattacharya, R.K.Bhowmik, A.Goswami, H.C.Jain, R.Kumar, E.Lawrie, S.Muralithar, D.Negi, R.Palit, R.P.Singh

Emergence of principal axis rotation in ¹¹⁰Ag

NUCLEAR REACTIONS ⁹⁶Zr(¹⁸O, 3np)¹¹⁰Ag, E=70 MeV; measured reaction products, Eγ, Iγ; deduced level scheme, J, π, B(E2), B(M1), deformation, negative-parity yrast band, high spin levels lifetime. Comparison with systematics, Total Routhian Surface and TQPTR calculations.

doi: 10.1016/j.physletb.2012.03.035
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Note: The following list of authors and aliases matches the search parameter N.Rather: , N.A.RATHER