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NSR database version of May 24, 2024.

Search: Author = R.Chandra

Found 21 matches.

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2022NA15      Eur.Phys.J. A 58, 28 (2022)

V.K.Nautiyal, R.Gautam, N.Das, R.Chandra, P.K.Raina, P.K.Rath

Occupation numbers and nuclear transition matrix elements for 0νβ-β- decay within a mechanism involving neutrino mass

NUCLEAR STRUCTURE 100Mo, 100Ru, 128,130Te, 136Xe; calculated sub-shell occupation numbers; deduced four HFB intrinsic wave functions with single particle energies due to Woods-Saxon potential and four different parametrizations of pairing plus multipolar effective two body interaction.

RADIOACTIVITY 94,96Zr, 110Pd, 128,130Te, 150Nd(2β-); calculated uncertainties in set of twelve nuclear transition matrix elements for the neutrinoless double-beta decay.

doi: 10.1140/epja/s10050-022-00677-y
Citations: PlumX Metrics


2021RA02      Int.J.Mod.Phys. E30, 2150004 (2021)

P.K.Rath, A.Kumar, R.Gautam, R.Chandra, P.K.Raina, B.M.Dixit

Nuclear transition matrix elements for neutrinoless double-β decay of 76Ge within mechanisms involving sterile neutrinos, Majorons and composite neutrinos

RADIOACTIVITY 76Ge(2β-); calculated nuclear matrix elements using HFB wave functions generated with a realistic KUO and an empirical JUNE45 effective two-body interactions.

doi: 10.1142/S021830132150004X
Citations: PlumX Metrics


2019RA37      Int.J.Mod.Phys. E28, 1950096 (2019)

P.K.Rath, A.Kumar, R.Chandra, R.Gautam, P.K.Raina and B.M.Dixit

Nuclear transition matrix elements for neutrinoless double-β decay of 76Ge isotope within PHFB approach

RADIOACTIVITY 76Ge(2β-); calculated nuclear transition matrix elements employing projected-Hartree-Fock-Bogoliubov (PHFB) model.

doi: 10.1142/S0218301319500964
Citations: PlumX Metrics


2019RA38      Front.Phys.(Lausanne) 7, 64 (2019)

P.K.Rath, R.Chandra, K.Chaturvedi, P.K.Raina

Nuclear Transition Matrix Elements for Double-β Decay Within PHFB Model

NUCLEAR STRUCTURE 94,96Zr, 94,96,100Mo, 100Ru, 110Pd, 110Cd, 128,130Te, 128,130Xe, 150Nd, 150Sm; calculated deformation parameters of nuclei participating in ββ decay with PQQ1, PQQ2, PQQHH1, andPQQHH2 parametrizations of effective two-body interaction. Comparison with available data.

RADIOACTIVITY 94,96Zr, 100Mo, 110Pd, 128,130Te, 150Nd(2β-); calculated average values of nuclear matrix elements.

doi: 10.3389/fphy.2019.00064
Citations: PlumX Metrics


2019SI14      Int.J.Mod.Phys. E28, 1950001 (2019)

Y.K.Singh, R.Chandra, K.Chaturvedi, T.Avasthi, P.K.Rath, P.K.Raina

Nuclear transition matrix elements for neutrinoless double-b decay within mechanisms involving light Majorana neutrino mass and right-handed current

RADIOACTIVITY 94,96Zr, 100Mo, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements for the neutrinoless double-beta decay using the projected-Hartree-Fock-Bogoliubov (PHFB) model.

doi: 10.1142/S0218301319500010
Citations: PlumX Metrics


2017SI32      Eur.Phys.J. A 53, 244 (2017)

Y.K.Singh, R.Chandra, P.K.Raina, P.K.Rath

Two neutrino doubleβ-decay of 94 ≤ A ≤ 150 nuclei for the 0+ → 2+ transition

RADIOACTIVITY 94,96Zr, 100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β); calculated 2ν 2β-decay nuclear transition matrix elements, 2+ state excitation energy, quadrupole moment, 2β transition Q, T1/2 using PHFB approach with four different parameterizations of the effective two-body interaction. Results compared with other calculations (QRPA, RQRPA, SRPA, SU(3), MCM), halflifes also with available data.

doi: 10.1140/epja/i2017-12445-8
Citations: PlumX Metrics


2016RA04      Phys.Rev. C 93, 024314 (2016)

P.K.Rath, R.Chandra, K.Chaturvedi, P.Lohani, P.K.Raina

Nuclear transition matrix elements for Majoron-accompanied neutrinoless double-β decay within a projected-Hartree-Fock-Bogoliubov model

RADIOACTIVITY 94,96Zr, 100Mo, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements for the 0+ to 0+ transitions in Majoron accompanied 0νββ decay mode by employing the projected-Hartree-Fock-Bogoliubov (PHFB) formalism with four different parametrizations of the pairing plus multipolar two-body interactions and three different parametrizations of the Jastrow short-range correlations; estimated uncertainties in the nuclear transition matrix elements for decays involving the emission of single and double Majorons; deduced limits on the effective Majoron-neutrino coupling constants from available limits on experimental half-lives.

doi: 10.1103/PhysRevC.93.024314
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2013RA04      Phys.Rev. C 87, 014301 (2013)

P.K.Rath, R.Chandra, K.Chaturvedi, P.Lohani, P.K.Raina, J.G.Hirsch

Uncertainties in nuclear transition matrix elements for β+β+ and eβ+ modes of neutrinoless positron double-β decay within the projected Hartree-Fock-Bogoliubov model

RADIOACTIVITY 96Ru, 102Pd, 106Cd, 124Xe, 130Ba, 156Dy(2β+), (β+EC); calculated nuclear transition matrix elements and half-lives for neutrinoless double β decay for light and heavy Majorana neutrino exchanges using the projected Hartree-Fock-Bogoliubov (PHFB) model with different parametrizations of pairing plus multipolar two-body interactions.

doi: 10.1103/PhysRevC.87.014301
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2013RA31      Phys.Rev. C 88, 064322 (2013)

P.K.Rath, R.Chandra, K.Chaturvedi, P.Lohani, P.K.Raina, J.G.Hirsch

Neutrinoless ββ decay transition matrix elements within mechanisms involving light Majorana neutrinos, classical Majorons, and sterile neutrinos

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements for the 0νββ decay mode involving light Majorana neutrinos, classical Majorons, and sterile neutrinos; deduced limits on the effective average neutrino mass from available limits on experimental half-lives. Projected-Hartree-Fock-Bogoliubov (PHFB) model with four different parameterizations of the pairing plus multipolar type effective two-body interaction, two sets of form factors, and two (three) different parameterizations of Jastrow type of short-range correlations.

doi: 10.1103/PhysRevC.88.064322
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2012RA04      Phys.Rev. C 85, 014308 (2012)

P.K.Rath, R.Chandra, P.K.Raina, K.Chaturvedi, J.G.Hirsch

Uncertainties in nuclear transition matrix elements for neutrinoless ββ decay: The heavy Majorana neutrino mass mechanism

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements MN(0ν) and estimated uncertainties due to the exchange of heavy Majorana neutrino. Projected-Hartree-Fock-Bogoliubov (PHFB) model with four different parameterization of the pairing plus the multipolar type of effective two-body interaction and three different parameterization of the Jastrow type of short-range correlations.

doi: 10.1103/PhysRevC.85.014308
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2010RA06      J.Phys.(London) G37, 055108 (2010)

P.K.Rath, R.Chandra, S.Singh, P.K.Raina, J.G.Hirsch

Quadrupolar correlations and deformation effect on two-neutrino ϵβ+ and ϵϵ modes of 156Dy isotope

NUCLEAR STRUCTURE 156Dy; calculated T1/2 for ECβ+ and 2EC-decay; deduced the effect of quadrupole deformation on the nuclear matrix element. HFB framework.

doi: 10.1088/0954-3899/37/5/055108
Citations: PlumX Metrics


2010RA20      Phys.Rev. C 82, 064310 (2010)

P.K.Rath, R.Chandra, K.Chaturvedi, P.K.Raina, J.G.Hirsch

Uncertainties in nuclear transition matrix elements for neutrinoless ββ decay within the projected-Hartree-Fock-Bogoliubov model

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements (NTME), short-range correlations (SRC) and radial evolutions of NTMEs, limit on effective light Majorana neutrino mass, and half-lives for neutrinoless ββ decay in 0+ to 0+ transitions using projected-Hartree-Fock-Bogoliubov (PHFB) model with several different parametrizations.

doi: 10.1103/PhysRevC.82.064310
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2009CH23      Europhys.Lett. 86, 32001 (2009)

R.Chandra, K.Chaturvedi, P.K.Rath, P.K.Raina, J.G.Hirsch

Multipolar correlations and deformation effect on nuclear transition matrix elements of double-β decay

NUCLEAR STRUCTURE 94,96Zr, 94,96,98,100Mo, 98,100,104Ru, 104,110Pd, 110Cd, 128,130Te, 128,130Xe, 150Nd, 150Sm; Calculated deformation parameters, nuclear transition matrix elements for 2β-decay. PHFB function, two-body interaction.

doi: 10.1209/0295-5075/86/32001
Citations: PlumX Metrics


2009RA26      Phys.Rev. C 80, 044303 (2009)

P.K.Rath, R.Chandra, K.Chaturvedi, P.K.Raina, J.G.Hirsch

Deformation effects and neutrinoless positron ββ decay of 96Ru, 102Pd, 106Cd, 124Xe, 130Ba, and 156Dy isotopes within a mechanism involving Majorana neutrino mass

RADIOACTIVITY 96Ru, 102Pd, 106Cd, 124Xe, 130Ba, 156Dy(2β+), (β+EC); calculated nuclear transition matrix elements (NTME) and half-lives in neutrinoless double-beta decay from 0+ to 0+ states using projected Hartree-Fock-Bogoliubov framework. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.044303
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2008CH27      Phys.Rev. C 78, 054302 (2008)

K.Chaturvedi, R.Chandra, P.K.Rath, P.K.Raina, J.G.Hirsch

Nuclear deformation and neutrinoless double-β decay of 94, 96Zr, 98, 100Mo, 104Ru, 110Pd, 128, 130Te, and 150Nd nuclei within a mechanism involving neutrino mass

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated limits on half-lives, neutrino masses. Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.78.054302
Citations: PlumX Metrics


2007SH33      Phys.Rev. C 76, 034601 (2007)

A.Shukla, B.K.Sharma, R.Chandra, P.Arumugam, S.K.Patra

Nuclear reaction studies of unstable nuclei using relativistic mean field formalisms in conjunction with the Glauber model

NUCLEAR REACTIONS 12C(12C, X), E < 1000 MeV/nucleon; 12C(Li, X), (Be, X), (B, X)E=800 MeV/nucleon; 12C(11Li, X), (14Be, X), (11Be, X), E=30, 85 MeV/nucleon; calculated σ, angular distributions and total reaction cross sections within the Glauber model. Compared results to available data.

doi: 10.1103/PhysRevC.76.034601
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2007SI25      Eur.Phys.J. A 33, 375 (2007)

S.Singh, R.Chandra, P.K.Rath, P.K.Raina, J.G.Hirsch

Nuclear deformation and the two-neutrino double-β decay in 124, 126Xe, 128, 130Te, 130, 132Ba and 150Nd isotopes

RADIOACTIVITY 128,130Te, 150Nd(β-β-); 124,126Xe, 130,132Ba(β+β+), (β+EC), (2EC); calculated decay rates and T1/2 using PHFB model. Compared results to available data.

NUCLEAR STRUCTURE 124,126,128,130Te, 124,126,128,130,132Xe, 130,132Ba, 150Nd, Sm; calculated level energies, J, π, B(E2), Quadrupole moments, and g-factors using the PHFB model. Compared results to avialable data.

doi: 10.1140/epja/i2007-10481-7
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2005CH04      Eur.Phys.J. A 23, 223 (2005)

R.Chandra, J.Singh, P.K.Rath, P.K.Raina, J.G.Hirsch

Two-neutrino double-β decay of 94 ≤ A ≤ 110 nuclei for the 0+ → 0+ transition

NUCLEAR STRUCTURE 94,96Zr, 94,96,98,100Mo, 98,100,104Ru, 104,110Pd, 110Cd; calculated levels, J, π, B(E2), quadrupole moments, g-factors. Projected Hartree-Fock-Bogoliubov model, comparison with data.

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd(2β-); calculated 2νββ-decay T1/2, deformation effects. Projected Hartree-Fock-Bogoliubov model, comparisons with data.

doi: 10.1140/epja/i2004-10087-7
Citations: PlumX Metrics


2005SH02      Eur.Phys.J. A 23, 235 (2005)

A.Shukla, P.K.Raina, R.Chandra, P.K.Rath, J.G.Hirsch

Two-neutrino positron double-beta decay of 106Cd for the 0+ → 0+

NUCLEAR STRUCTURE 106Pd, 106Cd; calculated levels, J, π, B(E2), quadrupole moments, g-factors. Projected Hartree-Fock-Bogoliubov model, comparison with data.

RADIOACTIVITY 106Cd(2β+); calculated 2νββ-decay T1/2, deformation effects. Projected Hartree-Fock-Bogoliubov model, comparisons with data.

doi: 10.1140/epja/i2004-10084-x
Citations: PlumX Metrics


2005SI38      Pramana 65, 517 (2005)

J.Singh, R.Chandra, P.K.Raina, P.K.Rath

Two-neutrino double β decay of 96Zr to excited 2+ state of 96Mo

RADIOACTIVITY 96Zr(2β-); calculated 2νββ-decay T1/2 for decay to excited state.

NUCLEAR STRUCTURE 96Zr, 96Mo; calculated 2+ levels B(E2), quadrupole moments, g factors.

doi: 10.1007/BF02704209
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2004RA25      Yad.Fiz. 67, 2043 (2004); Phys.Atomic Nuclei 67, 2021 (2004)

P.K.Raina, A.Shukla, P.K.Rath, B.M.Dixit, K.Chaturvedi, R.Chandra, S.K.Dhiman, A.J.Singh

The np Interaction Effects on the Double-Beta Decay Nuclear Matrix Elements for Medium-Mass Nuclei

RADIOACTIVITY 100Mo(2β-); 106Cd(2β+), (β+EC), (2EC); calculated 2ν-accompanied 2β-decay T1/2, matrix elements. Comparison with data.

doi: 10.1134/1.1825522
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Note: The following list of authors and aliases matches the search parameter R.Chandra: , R.N.CHANDRA