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NSR database version of April 27, 2024.

Search: Author = S.Modi

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2022SI09      Phys.Rev. C 105, L031302 (2022)

P.Siwach, P.Arumugam, S.Modi, L.S.Ferreira, E.Maglione

Fine structure in the odd-odd proton emitter ¹⁴⁴Tm

RADIOACTIVITY ¹⁴⁴Tm(p); calculated T_1/2, branching ratios. ¹⁴⁴Tm; calculated J, π of the ground state, configuration. ¹⁴³Er; J, π, levels. Nonadiabatic quasiparticle approach. Proposed triaxial deformation for the ground state of ¹⁴⁴Tm. Comparison to available experimental data.

doi: 10.1103/PhysRevC.105.L031302
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2022SI26      Phys.Rev. C 106, 044322 (2022)

P.Siwach, P.Arumugam, S.Modi, L.S.Ferreira, E.Maglione

Effects of triaxiality and residual $np$ interaction in the proton emission from ¹⁴⁰Ho

RADIOACTIVITY ¹⁴⁰Ho(p); calculated T_1/2, branching ratios to excited states in ¹³⁹Dy. ¹³⁹Dy, ¹⁴⁰Ho; calculated levels, J, π, neutron single-particle energy levels, rotational energies, contributions of various single-particle configurations to rotational states. Calculations within nonadiabatic quasiparticle approach considering the role of residual neutron-proton interaction and triaxiality. Comparison to experimental data.

doi: 10.1103/PhysRevC.106.044322
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2021SI10      Phys.Rev. C 103, L031303 (2021)

P.Siwach, P.Arumugam, S.Modi, L.S.Ferreira, E.Maglione

Interpretation of ¹⁰⁸I as an odd-odd γ-deformed proton emitter

NUCLEAR STRUCTURE ¹⁰⁷Te, ¹⁰⁷I; calculated Single-particle and quasiparticle levels for neutrons in ¹⁰⁷Te and for protons in ¹⁰⁷I, rotational energies, J, π of ¹⁰⁷Te. ¹⁰⁸I; calculated rotational energies, J, π, configurations, proton emission half-life as function of γ and β₂ deformation parameters, contribution of single-particle configurations with and without np interaction. ¹⁰⁸I; deduced g.s. Jπ from GM splitting and Newby shift. Comparison with experimental proton emission half-life of ¹⁰⁸I. Nonadiabatic quasiparticle microscopic approach to interpret the data for triaxial odd-odd proton emitters.

doi: 10.1103/PhysRevC.103.L031303
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2020CH11      Eur.Phys.J. A 56, 50 (2020)

S.Chakraborty, H.P.Sharma, S.S.Tiwary, C.Majumder, P.Banerjee, S.Ganguly, S.Rai, P.Popli, S.Modi, P.Arumugam, M.Singh, S.Kumar, A.Kumar, S.S.Bhattacharjee, R.P.Singh, S.Muralithar, R.Palit

Signature splitting in the positive parity bands of ¹²⁷Xe

doi: 10.1140/epja/s10050-020-00066-3
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2020SI25      J.Phys.(London) G46, 125105 (2020)

P.Siwach, P.Arumugam, S.Modi, L.S.Ferreira, E.Maglione

Nonadiabatic quasiparticle description of rotation-particle coupling in triaxial odd-odd nuclei

NUCLEAR STRUCTURE ¹³⁸Pm, ¹⁸⁰Ta; calculated single-particle and quasiparticle energies, bands, staggering, J, π.

doi: 10.1088/1361-6471/abb6c2
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2020TI04      Phys.Scr. 95, 095304 (2020)

S.S.Tiwary, H.P.Sharma, S.Chakraborty, C.Majumder, A.K.Gupta, S.Modi, P.Arumugam, P.Banerjee, S.Ganguly, K.Rojeeta Devi, Neelam, S.Kumar, S.K.Chamoli, A.Sharma, V.V.Jyothi, Mayank, A.Kumar, S.S.Bhattacharjee, I.Bala, S.Muralithar, R.P.Singh

Structure of positive parity states in ¹³⁹Pm

NUCLEAR REACTIONS ¹²⁷I(¹⁶O, 4n)¹³⁹Pm, E=84 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, J, π, partial level scheme, bands. Comparison with systematics, particle rotor model calculations.

doi: 10.1088/1402-4896/abaea8
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2018CH24      Phys.Rev. C 97, 054311 (2018); Erratum Phys.Rev. C 98, 059902 (2018)

S.Chakraborty, H.P.Sharma, S.S.Tiwary, C.Majumder, P.Banerjee, S.Ganguly, S.Rai, Pragati, S.Modi, P.Arumugam, Mayank, S.Kumar, R.Palit, A.Kumar, S.S.Bhattacharjee, R.P.Singh, S.Muralithar

Rotational band on a three-quasineutron isomer in ¹²⁷Xe

NUCLEAR REACTIONS ¹²²Sn(⁹Be, 4n), E=48 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(linear polarization), and half-lives of isomers by γγ(t) using INGA array at 15UD pelletron accelerator of IUAC-New Delhi. ¹²⁷Xe; deduced high-spin levels, J, π, bands, multipolarities, configurations, alignment plots, 3-qp states, reduced K-hindrance factors for γ transitions from 3-qp states in ¹²⁷Xe and ¹²⁹Ba. Comparison with modified particle rotor model (MPRM) calculations.

doi: 10.1103/PhysRevC.97.054311
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2017MO08      Phys.Rev. C 95, 024326 (2017)

S.Modi, M.Patial, P.Arumugam, E.Maglione, L.S.Ferreira

Nonadiabatic quasiparticle approach for rotation-particle coupling in triaxial odd-A nuclei

NUCLEAR STRUCTURE ^132,134Ba, ^134,136Ce, ^136,138Nd, ^136,138Sm, ^140,142Gd; analyzed parameters of the Variable moment of inertia (VMI) model from fitting of the experimental levels for ground and γ band using four different methods, including triaxial deformation. ¹³⁶Nd, ¹³⁷Pm; calculated levels, J, π, bands using the parameters from VMI model analysis, and considering β₂ and γ deformation. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.024326
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2017MO17      Phys.Rev. C 95, 054323 (2017)

S.Modi, M.Patial, P.Arumugam, E.Maglione, L.S.Ferreira

Triaxiality in the proton emitter ¹⁰⁹I

NUCLEAR STRUCTURE ¹⁰⁸Te; calculated levels, J, π with different triaxial deformations and compared with experimental data. ¹⁰⁹I; calculated single-particle and quasiparticle energies as function deformation parameters β₂ and γ, negative- and positive-parity bands as functions of deformation parameters β₂, β₄ and γ, yrast states, probability density of different single-particle angular momentum states. Nonadiabatic quasiparticle approach with the inclusion of triaxial degree of freedom.

RADIOACTIVITY ¹⁰⁹I(p); calculated half-life of proton emission from the yrast states of ¹⁰⁹I as function of β₂ and γ, and compared to the experimental value.

doi: 10.1103/PhysRevC.95.054323
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2017MO22      Phys.Scr. 92, 094002 (2017)

S.Modi, M.Patial, P.Arumugam, E.Maglione, L.S.Ferreira

Modified particle-rotor model and low-lying rotational bands in odd-A triaxial nuclei

doi: 10.1088/1402-4896/aa81ec
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2017MO42      Phys.Rev. C 96, 064308 (2017)

S.Modi, M.Patial, P.Arumugam, L.S.Ferreira, E.Maglione

Decay of ¹⁴⁷Tm and the role of triaxiality studied with a nonadiabatic quasiparticle approach

NUCLEAR STRUCTURE ^140,142,144Dy, ¹⁴¹Ho, ^145,147Tm; calculated levels, J, π, rotational bands, single-particle and quasiparticle energies in ¹⁴⁷Tm using modified particle-rotor model, with the microscopic nonadiabatic quasiparticle approach. Comparison with experimental data.

RADIOACTIVITY ^147,147mTm(p); calculated half-lives; deduced Jπ of g.s. and isomer of ¹⁴⁷Tm. Comparison with experimental values.

doi: 10.1103/PhysRevC.96.064308
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