NSR Query Results
Output year order : Descending NSR database version of May 19, 2024. Search: Author = U.Shirwadkar Found 6 matches. 2019SH34 Phys.Rev. C 100, 034309 (2019) U.Shirwadkar, S.K.Tandel, P.Chowdhury, T.L.Khoo, I.Ahmad, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, F.G.Kondev, T.Lauritsen, C.J.Lister, D.Peterson, D.Seweryniak, X.Wang, S.Zhu Decay spectroscopy of two-quasiparticle K isomers in ^{246, 248}Cm via inelastic and transfer reactions NUCLEAR REACTIONS ^{248}Cm(^{209}Bi, ^{209}Bi'), ^{248}Cm(^{209}Bi, X)^{246}Cm, E=1450 MeV from ATLAS-ANL accelerator facility, with bursts between 1 μs to 8 s; measured Eγ, Iγ, γγ-coin, half-lives of isomers in ^{246}Cm and ^{248}Cm by γ(t) using Gammasphere array. ^{246,248}Cm; deduced levels, J, π, K-isomers, two-quasineutron Nilsson configurations, reduced K hindrances, persistence of a deformed subshell gap at N=152 near Z≈100 from systematics of Kπ=8-, two-quasineutron isomeric states in N=150, Z=94-102 even-even nuclei.
doi: 10.1103/PhysRevC.100.034309
2016HO13 Phys.Rev. C 94, 021303 (2016) S.S.Hota, S.K.Tandel, P.Chowdhury, I.Ahmad, M.P.Carpenter, C.J.Chiara, J.P.Greene, C.R.Hoffman, E.G.Jackson, R.V.F.Janssens, B.P.Kay, T.L.Khoo, F.G.Kondev, S.Lakshmi, S.Lalkovski, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, D.Peterson, U.Shirwadkar, D.Seweryniak, I.Stefanescu, Y.Toh, S.Zhu Population and decay of a K^{π} = 8^{-} two-quasineutron isomer in ^{244}Pu NUCLEAR REACTIONS ^{244}Pu(^{208}Pb, ^{208}Pb'), E=1430 MeV; ^{244}Pu(^{47}Ti, ^{47}TI'), E=305 MeV; measured Eγ, Iγ, γγ-coin, M1/E2 branching ratios, prompt and off-beam γ rays, half-life of a 2-qp 8- isomer using Gammasphere array at ATLAS-ANL. ^{244}Pu; deduced high-spin levels, J, π, rotational bands, multipolarity, configurations, kinematic and dynamic moments of inertia, (g_{k}-g_{R})/Q_{0}, reduced hindrance factors for transitions from the isomer. Comparison with multi-qp calculations using Woods-Saxon potential and Lipkin-Nogami pairing. Systematics of moment of inertia plots and 8- isomers for ^{244}Pu, ^{250}Fm and ^{252}No.
doi: 10.1103/PhysRevC.94.021303
2014HO16 Phys.Lett. B 739, 13 (2014) S.S.Hota, P.Chowdhury, T.L.Khoo, M.P.Carpenter, R.V.F.Janssens, Y.Qiu, I.Ahmad, J.P.Greene, S.K.Tandel, D.Seweryniak, S.Zhu, P.F.Bertone, C.J.Chiara, A.Y.Deo, N.D'Olympia, S.Gros, C.J.Guess, T.Harrington, D.J.Hartley, G.Henning, C.R.Hoffman, E.G.Jacksona, F.G.Kondev, S.Lakshmi, T.Lauritsen, C.J.Lister, E.A.McCutchan, K.Moran, C.Nair, D.Peterson, U.Shirwadkar, I.Stefanescu N=151 Pu, Cm and Cf nuclei under rotational stress: Role of higher-order deformations NUCLEAR REACTIONS ^{244}Pu, ^{249}Cf(^{208}Pb, X)^{242}Pu/^{243}Pu/^{244}Pu/^{245}Pu/^{246}Pu/^{248}Cf/^{249}Cf/^{250}Cf, ^{248}Cm(^{209}Bi, X)^{246}Cm/^{247}Cm/^{248}Cm/^{249}Cm/^{250}Cm, E not given; measured reaction products, Eγ, Iγ. ^{245}Pu, ^{247}Cm, ^{249}Cf; deduced energy levels, J, π, rotational bands, high-spins, deformations. Comparison with available data, Cranked WS model.
doi: 10.1016/j.physletb.2014.10.021
2011HA25 Phys.Rev. C 83, 064307 (2011) D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, A.Aguilar, M.P.Carpenter, C.J.Chiara, P.Chowdhury, I.G.Darby, U.Garg, Q.A.Ijaz, F.G.Kondev, S.Lakshmi, T.Lauritsen, A.Ludington, W.C.Ma, E.A.McCutchan, S.Mukhopadhyay, R.Pifer, E.P.Seyfried, U.Shirwadkar, I.Stefanescu, S.K.Tandel, J.R.Vanhoy, S.Zhu, S.Frauendorf Rotational structures and the wobbling mode in ^{167}Ta NUCLEAR REACTIONS ^{120}Sn(^{51}V, 4n), E=235 MeV; measured Eγ, Iγ, γγ-coin γγ(θ) using Gammasphere array. ^{167}Ta; deduced levels, J, π, multipolarity, B(M1)/B(E2), rotational bands, alignments, band crossing frequencies, band configurations. Comparison with particle-rotor model calculations, and trends in the wobbling phonon energies in ^{161,163,165,167}Lu, and ^{167}Ta.
doi: 10.1103/PhysRevC.83.064307
2011RO20 Phys.Rev. C 83, 064311 (2011) A.P.Robinson, T.L.Khoo, D.Seweryniak, I.Ahmad, M.Asai, B.B.Back, M.P.Carpenter, P.Chowdhury, C.N.Davids, J.Greene, P.T.Greenlees, K.Hauschild, A.Heinz, R.-D.Herzberg, R.V.F.Janssens, D.G.Jenkins, G.D.Jones, S.Ketelhut, F.G.Kondev, T.Lauritsen, C.J.Lister, A.Lopez-Martens, P.Marley, E.McCutchan, P.Papadakis, D.Peterson, J.Qian, D.Rostron, U.Shirwadkar, I.Stefanescu, S.K.Tandel, X.Wang, S.Zhu Search for a 2-quasiparticle high-K isomer in ^{256}Rf NUCLEAR STRUCTURE ^{256}Rf; calculated ground state and rotational band energies, configurations using Woods-Saxon Potential. NUCLEAR REACTIONS ^{208}Pb(^{50}Ti, 2n), E=240 MeV; measured Eγ, Iγ, ce, γγ-, γ(ce)-coin, γ(t), half-life. ^{256}Rf; deduced levels, J, π, isomers, configurations; calculated energies of two-quasiparticle high-K isomers with the universal Woods-Saxon energies. ^{170}Er(^{50}Ti, 4n)^{216}Th, E=222 MeV; measured Eγ, ce, γ(ce)-coin from isomer, half-life, isomer ratio; used as a test case.
doi: 10.1103/PhysRevC.83.064311
2010HA26 Phys.Rev. C 82, 057302 (2010) D.J.Hartley, R.V.F.Janssens, L.L.Riedinger, M.A.Riley, X.Wang, A.Aguilar, M.P.Carpenter, C.J.Chiara, P.Chowdhury, I.G.Darby, U.Garg, Q.A.Ijaz, F.G.Kondev, S.Lakshmi, T.Lauritsen, W.C.Ma, E.A.McCutchan, S.Mukhopadhyay, E.P.Seyfried, U.Shirwadkar, I.Stefanescu, S.K.Tandel, J.R.Vanhoy, S.Zhu Band crossings in ^{166}Ta NUCLEAR REACTIONS ^{120}Sn(^{51}V, 5n), E=235 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere array. ^{166}Ta; deduced levels, J, π, rotational bands, alignments and B(M1)/B(E2) ratios. Comparison of alignments with those in ^{165}Hf bands. Comparison with theoretical B(M1)/B(E2) ratios.
doi: 10.1103/PhysRevC.82.057302
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