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NSR database version of April 27, 2024.

Search: Author = R.Gowrishankar

Found 15 matches.

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2022SO18      Phys.Rev. C 106, 054307 (2022)

P.C.Sood, R.Gowrishankar

Low-lying level structures in the transuranic n-rich Z = 93 nuclei 243Np and 244Np

NUCLEAR STRUCTURE 243Np; analyzed information on levels, J, π available from experiments, systematics and results from microscopic Nilsson model calculations; deduced J, π for the ground state, configuration. 244Np; calculated levels, J, π, rotational states, 2qp configurations, energy of 7- isomer. Three-step two-quasiparticle rotor model (TQRM).

RADIOACTIVITY 244m,244Np(β-); analyzed available data; deduced decay branches populating states in 244Pu.

doi: 10.1103/PhysRevC.106.054307
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2021SI21      Nucl.Data Sheets 175, 150 (2021)

B.Singh, G.Mukherjee, S.K.Basu, S.Bhattacharya, S.Bhattacharya, A.Chakraborti, A.K.De, R.Gowrishankar, A.K.Jain, S.Kumar, S.Singh

Nuclear Data Sheets for A=219

COMPILATION 219Pb, 219Bi, 219Po, 219At, 219Rn, 219Fr, 219Ra, 219Ac, 219Th, 219Pa, 219U, 219Np; compiled, evaluated nuclear structure data.

doi: 10.1016/j.nds.2021.06.002
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2021SO03      Phys.Rev. C 103, 014310 (2021)

P.C.Sood, P.M.Jodidar, R.Gowrishankar

Level structures of the transfermium odd-odd nucleus 252Md

NUCLEAR STRUCTURE 252Md; calculated levels, J, p, energies of bandheads, configurations using phenomenological two-quasiparticle particle rotor model with residual p-n interactions.

RADIOACTIVITY 256Lr(α); analyzed experimental γ-ray and αγ-coin data. 252Md; deduced levels, J, π. 256Lr; deduced g.s. spin and parity.

doi: 10.1103/PhysRevC.103.014310
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2017SO07      Phys.Rev. C 95, 024317 (2017)

P.C.Sood, R.Gowrishankar

Characterization of long-lived isomers in the odd-odd heavy actinide 254Md

NUCLEAR STRUCTURE 254Md; analyzed two-quasiparticle configuration states using the two-quasiparticle rotor model, 2-qp Gallagher-Moszkowski (GM) doublet bands, levels, J, π, energies and configurations of ground state and isomer.

RADIOACTIVITY 254,254mMd(EC); analyzed electron-capture branches to the excited states in 254Fm. 254Fm; deduced levels, J, π.

doi: 10.1103/PhysRevC.95.024317
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2016GO07      Eur.Phys.J. A 52, 31 (2016)

R.Gowrishankar, P.C.Sood

Level structures in odd-odd deformed nucleus 184Ta

NUCLEAR STRUCTURE 184Ta; calculated levels, J, π, two-quasiparticle bandheads, rotational bands, gs J, π using TQRM (Two-Quasiparticle Rotor Model); deduced low-lying (200 keV) high-spin isomer. Compared with data from 184Hf, 184Ta β--decay.

doi: 10.1140/epja/i2016-16031-4
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2014SO03      Phys.Rev. C 89, 034308 (2014)

P.C.Sood, R.Gowrishankar, A.Kumar Dora

Level structures in 240Np

NUCLEAR STRUCTURE 240Np; calculated 2-qp levels, J, π, 3-step rotor particle model, and mapping of 1-qp configuration space from 239Np and 239U.

RADIOACTIVITY 240U, 240Np, 240mNp(β-); analyzed experimental data for 23 β branches; deduced 2qp structures. 240Np; deduced Gallagher-Moszkowski (GM) doublet and 2-qp configurations of ground state and isomer.

doi: 10.1103/PhysRevC.89.034308
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2014SO21      Phys.Rev. C 90, 067303 (2014)

P.C.Sood, R.Gowrishankar

Configuration assignments to isomers in the neutron-rich 186Ta (Z=73) nucleus

NUCLEAR STRUCTURE 186Ta; calculated two-quasiparticle (2-qp) levels, J, π; mapped 1-qp configuration space from 185Ta 187W; assigned 2-qp configurations for 10.5 min-, 1.54 min- and 3.0 min-isomers. Two-quasiparticle rotor model including residual neutron-proton interaction and other contributing factors. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.067303
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2012DE24      Eur.Phys.J. A 48, 126 (2012)

S.Deepa, K.Vijay Sai, R.Gowrishankar, K.Venkataramaniah

Conversion electron measurements and determination of rotational parameters in 177Lu and 177Hf

RADIOACTIVITY 177mLu(EC)[from neutron irradiation of 176Lu]; measured Eγ, Iγ using coaxial HPGe, Eβ, Iβ using Si(Li) detectors in magnetic field, X-rays. 177Lu, 177Hf deduced decay scheme, isomeric transition decay scheme, γ spectra, levels, J, π, rotational bands, parameters, g-factors, CE intensities, ICC, multipolarities, mixing ratio, branching ratio. Compared with other data.

doi: 10.1140/epja/i2012-12126-2
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2012SO10      J.Phys.(London) G39, 095107 (2012)

P.C.Sood, R.Gowrishankar, K.Vijay Sai

Level structures in the odd-odd nucleus 154Pm

RADIOACTIVITY 154Nd, 154Pm(β-); analyzed available data. 154Pm; deduced level energies, J, π, isomers, log ft. Comparison with calculations and available data.

doi: 10.1088/0954-3899/39/9/095107
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2012SO18      Eur.Phys.J. A 48, 136 (2012)

P.C.Sood, M.Sainath, R.Gowrishankar, B.Singh

Level structures in 156Pm from 156Nd β- decay

RADIOACTIVITY 156Nd(β-). 156Pm deduced levels, J, π using γ fitting procedure applied to published Eγ.

NUCLEAR STRUCTURE 156Pm[from 156Nd(β-)]; calculated 2qp levels, J, π using rotor-particle model.

doi: 10.1140/epja/i2012-12136-0
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2011DE07      Appl.Radiat.Isot. 69, 869 (2011)

S.Deepa, K.Vijay Sai, R.Gowrishankar, D.R.Rao, K.Venkataramaniah

Precision electron-gamma spectroscopic measurements in the decay of 177Lu

RADIOACTIVITY 177Lu(β-) [from 176Lu(n, γ), E not given]; measured Eγ, Iγ, x-rays; deduced ICC, mixing ratios, log ft. Comparison with experimental and evaluated data.

doi: 10.1016/j.apradiso.2011.02.012
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2011SO05      Phys.Rev. C 83, 027303 (2011)

P.C.Sood, M.Sainath, R.Gowrishankar, K.Vijay Sai

Characterization of isomers in the neutron-rich odd-odd nucleus 156Pm

RADIOACTIVITY 156Nd, 156Pm(β-); analyzed J, π, Logft values. 156Pm, 156Sm; deduced J, π, 2-qp configurations. Quasi-particle rotor model. Systematics of Logft values of first-forbidden β transitions in the decay of 152,155Pm, 157Ho and 158Er. Discussed validity of Logft values in the assignment of parities of parent and daughter nuclei.

doi: 10.1103/PhysRevC.83.027303
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2011SO14      Phys.Rev. C 83, 057302 (2011)

P.C.Sood, K.Vijay Sai, R.Gowrishankar, M.Sainath

Structure of the yrast band in the odd-odd deformed nucleus 156Pm

NUCLEAR STRUCTURE 156Pm; analyzed levels, J, π, 6-level sequence from post-SF of 252Cf; assigned Kπ and 2-quasiparticle configurations.

doi: 10.1103/PhysRevC.83.057302
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2008GE03      At.Data Nucl.Data Tables 94, 701 (2008)

J.Gerl, K.V.Sai, M.Sainath, R.Gowrishankar, K.Venkataramaniah

Internal conversion coefficients of high multipole transitions: Experiment and theories

COMPILATION Z=21-94; compiled, analyzed experimental ICC for E3, E4, E5, M3 and M4 transitions; comparison with calculations using BRICC code and earlier theoretical calculations.

doi: 10.1016/j.adt.2008.04.001
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2008RA04      Appl.Radiat.Isot. 66, 377 (2008)

D.R.Rao, K.V.Sai, M.Sainath, R.Gowrishankar, K.Venkataramaniah

Electron-gamma spectroscopic measurements in 131Cs

RADIOACTIVITY 131Ba(β+); measured Eγ, Iγ, conversion electrons. 131Cs; deduced levels, ICC, transition multipolarities.

doi: 10.1016/j.apradiso.2007.09.016
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