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NSR database version of April 27, 2024.

Search: Author = B.Das

Found 28 matches.

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2024DE08      Phys.Rev. C 109, 034313 (2024)

P.Dey, R.Palit, P.C.Srivastava, B.Das, A.Kundu, Md.S.R.Laskar, V.Malik, D.Negi, Sh.Sharma

Experimental investigation of high-spin states in ⁹¹Nb

doi: 10.1103/PhysRevC.109.034313
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2022DA06      Phys.Rev. C 105, L031304 (2022)

B.Das, B.Cederwall, C.Qi, M.Gorska, P.H.Regan, O.Aktas, H.M.Albers, A.Banerjee, M.M.R.Chishti, J.Gerl, N.Hubbard, S.Jazrawi, J.Jolie, A.K.Mistry, M.Polettini, A.Yaneva, S.Alhomaidhi, J.Zhao, T.Arici, S.Bagchi, G.Benzoni, P.Boutachkov, T.Davinson, T.Dickel, E.Haettner, O.Hall, Ch.Hornung, J.P.Hucka, P.R.John, I.Kojouharov, R.Knobel, D.Kostyleva, N.Kuzminchuk, I.Mukha, W.R.Plass, B.S.Nara Singh, J.Vasiljevic, S.Pietri, Zs.Podolyak, M.Rudigier, H.Rosch, E.Sahin, H.Schaffner, C.Scheidenberger, F.Schirru, A.Sharma, R.Shearman, Y.Tanaka, J.Vesic, H.Weick, H.J.Wollersheim, U.Ahmed, A.Algora, C.Appleton, J.Benito, A.Blazhev, A.Bracco, A.M.Bruce, M.Brunet, R.Canavan, A.Esmaylzadeh, L.M.Fraile, G.Hafner, H.Heggen, D.Kahl, V.Karayonchev, R.Kern, A.Korgul, G.Kosir, N.Kurz, R.Lozeva, M.Mikolajczuk, P.Napiralla, R.Page, C.M.Petrache, N.Pietralla, J.-M.Regis, P.Ruotsalainen, L.Sexton, V.Sanchez-Temble, M.Si, J.Vilhena, V.Werner, J.Wiederhold, W.Witt, P.J.Woods, G.Zimba

Nature of seniority symmetry breaking in the semimagic nucleus ⁹⁴Ru

RADIOACTIVITY ^95mPd(β⁺p)[from ⁹Be(¹²⁴Xe, F), E=850 MeV/nucleon];measured Eγ, Iγ, Ep, Ip, γγ-coin, pγ-coin. ⁹⁴Ru; deduced T_1/2 of low-lying excited states, B(E2). Comparison to shell-model calculations. Ions were separated with FRS at GSI and implanted in the Advanced Implantation Detector Array (AIDA), composed of three double-sided silicon strip detectors (DSSSDs) situated at the center of the DEcay SPECtroscopy (DESPEC) setup, comprised of a hybrid array of six triple cluster high-purity germanium (HPGe) detectors and 36 LaBr3(Ce) detectors of the FAst TIMing Array (FATIMA).

doi: 10.1103/PhysRevC.105.L031304
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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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2022SA06      Phys.Rev. D 105, 018302 (2022)

B.K.Sahoo, B.P.Das, H.Spiesberger

Reply to "Comment on "New physics constraints from atomic parity violation in ¹³³Cs"

ATOMIC PHYSICS ¹³³Cs; calculated the nuclear spin-independent parity violating electric dipole transition amplitude; deduced a new value for the nuclear weak charge and uncertainties.

doi: 10.1103/PhysRevD.105.018302
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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
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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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2021LA06      Phys.Rev. C 104, L011301 (2021)

Md.S.R.Laskar, R.Palit, E.Ideguchi, T.Inakura, S.N.Mishra, F.S.Babra, S.Bhattacharya, D.Choudhury, B.Das, B.Das, P.Dey, U.Garg, A.K.Jain, A.Kundu, D.Kumar, D.Negi, S.C.Pancholi, S.Rajbanshi, S.Sihotra

Enhanced B(E3) strength observed in ¹³⁷La

NUCLEAR REACTIONS ¹³⁰Te(¹¹B, 4n)¹³⁷La, E=40 MeV; measured Eγ, Iγ, γγ-coin, level half-life by γγ(t) using an array of 11 Compton-suppressed HPGe clover and 14 LaBr₃(Ce) detectors at the Pelletron Linac Facility of TIFR-Mumbai. ¹³⁷La; deduced levels, J, π, half-life of 1005, 11/2- level, B(E3), sudden increase of B(E3) strength at N=80. Comparison with random-phase approximation (RPA) calculations. Systematics of B(E3) strengths in ^129,133La and ^{132,134,136,138}Ba.

doi: 10.1103/PhysRevC.104.L011301
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2021SA56      Phys.Rev. D 103, L111303 (2021)

B.K.Sahoo, B.P.Das, H.Spiesberger

New physics constraints from atomic parity violation in ¹³³Cs

ATOMIC PHYSICS ¹³³Cs; calculated the nuclear spin-independent parity violating electric dipole transition amplitude; deduced a new value for the nuclear weak charge.

doi: 10.1103/PhysRevD.103.L111303
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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
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2019SA43      Phys.Rev. A 100, 020502R (2019)

A.Sakurai, B.K.Sahoo, K.Asahi, B.P.Das

Relativistic many-body theory of the electric dipole moment of ¹²⁹Xe and its implications for probing new physics beyond the standard model

NUCLEAR MOMENTS ¹²⁹Xe; calculated static dipole polarizability; deduced the time-reversal and parity violating electric dipole moment arising from the nuclear Schiff moment and the electron-nucleus tensor-pseudotensor interaction based on the self-consistent and the normal relativistic coupled-cluster methods.

doi: 10.1103/PhysRevA.100.020502
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2018DA15      Phys.Rev. C 98, 014326 (2018)

B.Das, P.Datta, S.Chattopadhyay, S.Roy, R.Raut, R.K.Bhowmik, A.Goswami, H.C.Jain, R.Kumar, S.Muralithar, D.Negi, S.Pal, R.Palit, R.P.Singh

Coexistence of principal and tilted axis rotation in ¹¹⁰Ag

NUCLEAR REACTIONS ⁹⁶Zr(¹⁸O, 3np), E=70 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO), γγ(lin pol)(PDCO), level half-lives by DSAM using the INGA array at 15-UD Pelletron of IUAC-New Delhi. ¹¹⁰Ag; deduced high-spin levels, J, π, multipolarities, B(M1), B(E2), configurations, possible shears band. Comparison with shears with principal axis cranking (SPAC) calculation.

doi: 10.1103/PhysRevC.98.014326
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2018SA23      Phys.Rev. A 97, 062510 (2018)

A.Sakurai, B.K.Sahoo, B.P.Das

Electric dipole polarizability of ¹²⁹Xe using the relativistic coupled-cluster and the normal coupled-cluster methods

NUCLEAR MOMENTS ¹²⁹Xe; calculated static dipole polarizability using the self-consistent relativistic coupled-cluster theory and the relativistic normal coupled-cluster theory.

doi: 10.1103/PhysRevA.97.062510
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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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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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2017YA10      Eur.Phys.J. A 53, 54 (2017)

N.Yamanaka, B.K.Sahoo, N.Yoshinaga, T.Sato, K.Asahi, B.P.Das

Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation

ATOMIC PHYSICS ¹²⁹Xe, ¹⁹⁹Hg, ²²⁵Ra; deduced atomic electric dipole moment (relative to the CP-violation coefficient) from LHC and other published data.

doi: 10.1140/epja/i2017-12237-2
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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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2015SA18      Phys.Rev. A 91, 042507 (2015)

B.K.Sahoo, D.K.Nandy, B.P.Das, Y.Sakemi

Correlation trends in the hyperfine structures of ^{210, 212}Fr

NUCLEAR STRUCTURE ^210,212Fr; calculated magnetic dipole and electric quadrupole hyperfine structure constants using the Dirac-Fock approximation. Comparison with available data.

doi: 10.1103/PhysRevA.91.042507
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2015SA48      Phys.Rev. A 92, 052511 (2015)

B.K.Sahoo, B.P.Das

Theoretical studies of the long lifetimes of the 6d²D_{3/2, 5/2}states in Fr: Implications for parity-nonconservation measurements

ATOMIC PHYSICS Fr; calculated levels T_1/2, radiative transition amplitudes of the allowed electric dipole (E1) and the forbidden electric quadrupole (E2) and magnetic dipole (M1) channels using the second-order many-body perturbation theory and the coupled-cluster method at different levels of approximations in the relativistic framework. Comparison with available data.

doi: 10.1103/PhysRevA.92.052511
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2007LA36      Phys.Rev. A 76, 062508 (2007)

K.V.P.Latha, C.Sur, R.K.Chaudhuri, B.P.Das, D.Mukherjee

Electric quadrupole moment of the 5d²D_3/2 state in ¹⁷¹Yb⁺: A relativistic coupled-cluster analysis

ATOMIC PHYSICS ¹⁷¹Yb; calculated electric quadrupole moment using the coupled-cluster method.

doi: 10.1103/PhysRevA.76.062508
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2007MA06      Eur.Phys.J. D 41, 441 (2007)

S.Majumder, B.K.Sahoo, R.K.Chaudhuri, B.P.Das, D.Mukherjee

Many-body effects in hyperfine interactions in ²⁰⁵Pb⁺

NUCLEAR MOMENTS ²⁰⁵Pb; calculated magnetic dipole and electric quadrupole hyperfine structure constants. Relativistic coupled-cluster theory.

doi: 10.1140/epjd/e2006-00248-2
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2005SA67      J.Phys.(London) B38, 4379 (2005)

B.K.Sahoo, T.Beier, B.P.Das, R.K.Chaudhuri, D.Mukherjee

Electron correlation effects in hyperfine interactions in ⁴⁵Sc and ⁸⁹Y

NUCLEAR MOMENTS ⁴⁵Sc, ⁸⁹Y; calculated dipole and quadrupole hfs constants. Relativistic coupled-cluster theory, comparison with data.

doi: 10.1088/0953-4075/38/24/004
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2003SA41      Phys.Rev. A 68, 040501 (2003)

B.K.Sahoo, G.Gopakumar, R.K.Chaudhuri, B.P.Das, H.Merlitz, U.S.Mahapatra, D.Mukherjee

Magnetic dipole hyperfine interactions in ¹³⁷Ba⁺ and the accuracies of the neutral weak interaction matrix elements

NUCLEAR MOMENTS ¹³⁷Ba; calculated hyperfine constants for singly ionized atom. Relativistic coupled-cluster method.

doi: 10.1103/PhysRevA.68.040501
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2000PA61      Phys.Rev. C62, 065501 (2000)

P.K.Panda, B.P.Das

Effects of Nuclear Structure on Parity Nonconservation in Atomic Cesium in Relativistic Mean Field Theory

NUCLEAR STRUCTURE ^{125,127,129,131,133,135,137,139}Cs; calculated binding energies, radii, nuclear structure corrections to weak charge. Relativistic mean field theory, several parameter sets compared.

doi: 10.1103/PhysRevC.62.065501
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1999SI17      J.Phys.(London) B32, 4905 (1999)

A.D.Singh, B.P.Das

Parity Non-Conservation in Atomic Yb Arising from the Nuclear Anapole Moment

ATOMIC PHYSICS Yb; calculated atomic levels configuration state functions, transition matrix elements; deduced implications for anapole moment measurements. Shielded potential.

doi: 10.1088/0953-4075/32/20/308
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1992DA13      J.Phys.(London) G18, 1431 (1992)

B.K.Das, R.K.Satpathy

A Correction to ' Fusion Cross Sections of ¹⁶O + ⁴⁸Ca, ⁴⁰Ca + ⁴⁸Ca and ⁴⁰Ca + ⁶⁰Ni '

NUCLEAR REACTIONS ⁴⁸Ca(¹⁶O, X), E(cm)=35-152.93 MeV; ⁴⁸Ca(⁴⁰Ca, X), E(cm)=48.93-70.9 MeV; ⁶⁰Ni(⁴⁰Ca, X), E(cm)=68.2-86.6 MeV; calculated fusion σ(E). Corrected spin-orbit term in ion-ion potential.

doi: 10.1088/0954-3899/18/8/015
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1990DA02      J.Phys.(London) G16, 221 (1990)

B.K.Das, R.K.Satpathy

Fusion Cross Section of ¹⁶O + ⁴⁸Ca, ⁴⁰Ca + ⁴⁸Ca and ⁴⁰Ca + ⁶⁰Ni Using Skyrme Force

NUCLEAR REACTIONS, ICPND ⁴⁸Ca(¹⁶O, ¹⁶O), E(cm)=74 MeV; ⁴⁸Ca(⁴⁰Ca, ⁴⁰Ca), E(cm)=60 MeV; ⁶⁰Ni(⁴⁰Ca, ⁴⁰Ca), E(cm)=86.6 MeV; calculated ion-ion potential parameters, fusion σ. Energy density formalism, Skyrme forces.

doi: 10.1088/0954-3899/16/2/011
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1986DA02      J.Phys.(London) B19, L7 (1986)

B.P.Das, I.P.Grant

Multiconfiguration Dirac-Fock Approach to the Fine-Structure Splitting in the 3s3p Configuration of the Magnesium Sequence

ATOMIC PHYSICS Z=13-50; calculated Mg sequence fine structure intervals. Multi-configuration Dirac-Fock approach.

doi: 10.1088/0022-3700/19/1/002
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1982VA22      Phys.Rev.Lett. 48, 1330 (1982); Erratum Phys.Rev.Lett. 49, 1466 (1982); Erratum Phys.Rev.Lett. 49, 1800 (1982)

M.Vajed-Samii, J.Andriessen, B.P.Das, S.N.Ray, T.Lee, T.P.Das

Accurate Values of Nuclear Magnetic Moments of Francium Isotopes

NUCLEAR MOMENTS ^{208,209,210,211,212,213}Fr; calculated μ. Relativistic many-body perturbation theory.

doi: 10.1103/PhysRevLett.48.1330
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Note: The following list of authors and aliases matches the search parameter B.Das: , B.K.DAS, B.P.DAS