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NSR database version of April 26, 2024.

Search: Author = A.S.Tamashiro

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2024TA04      Nucl.Data Sheets 193, 131 (2024)

A.S.Tamashiro, J.T.Harke, J.G.Duarte, Y.Mishnayot, S.Burcher, S.W.Padgett, P.Zhao, B.D.Pierson, N.Gharibyan, J.M.Goda, L.R.Greenwood, D.K.Hayes, J.Hutchinson, N.Harward, K.Roberts, G.Slavik, P.Yap-Chiongco, J.Walker, C.J.Palmer

²³⁷Np Fission Spectrum Cumulative Fission Product Yield Measurement Using Godiva IV Critical Assembly

NUCLEAR REACTIONS ²³⁷Np(n, F)⁸⁸Kr/⁹¹Sr/⁹²Sr/⁹³Y/⁹⁵Zr/⁹⁷Zr/⁹⁹Mo/¹⁰³Ru/¹⁰⁵Ru/¹⁰⁵Rh/¹²⁷Sn/¹²⁸Sn/¹²⁹Sb/¹³⁰Sb/^131mTe/¹³²Te/^133mTe/¹³⁴Te/¹³¹I/¹³³I/¹³⁵I/¹³⁹Ba/¹⁴⁰Ba/¹⁴¹La/¹⁴²La/¹⁴³Ce/¹⁵¹Pm, E<10 MeV; measured reaction products, Eγ, Iγ; deduced precise integral measurement of fast neutron-induced fission product yields. Comparison with England and Rider's evaluation. Godiva IV is a critical assembly composed of unreflected highly enriched uranium (HEU) metal fuel.

doi: 10.1016/j.nds.2024.01.006
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2024TA05      Nucl.Data Sheets 193, 153 (2024)

A.S.Tamashiro, J.T.Harke, J.G.Duarte, Y.Mishnayot, S.W.Padgett, G.Slavik, S.Burcher, N.Harward, N.Gharibyan, R.A.Henderson, L.R.Greenwood, B.D.Pierson, J.M.Goda, J.A.Bounds, D.K.Hayes, C.J.Palmer

²³⁹Pu Fission Spectrum Cumulative Fission Product Yield Measurement Using Godiva IV Critical Assembly

NUCLEAR REACTIONS ²³⁹Pu(n, F)^85mKr/⁸⁷Kr/⁸⁸Kr/⁸⁹Rb/⁹¹Sr/⁹²Sr/⁹³Y/⁹⁵Zr/⁹⁷Zr/⁹⁹Mo/¹⁰³Ru/¹⁰⁵Ru/¹⁰⁵Rh/¹²⁷Sn/¹²⁸Sn/¹²⁷Sb/¹²⁹Sb/¹³⁰Sb/¹³¹Sb/^131mTe/¹³²Te/^133mTe/¹³⁴Te/¹³¹I/¹³³I/¹³⁵I/¹³⁸Cs/¹³⁹Ba/¹⁴⁰Ba/¹⁴¹Ba/¹⁴¹La/¹⁴²La/¹⁴³Ce/¹⁴⁶Pr/¹⁴⁹Nd/¹⁵¹Pm, E<10 MeV; measured reaction products, Eγ, Iγ; deduced precise integral measurement of fast neutron-induced fission product yields, cumulative fission product yield . Comparison with England and Rider's evaluation. Godiva IV is a critical assembly composed of unreflected highly enriched uranium (HEU) metal fuel.

doi: 10.1016/j.nds.2024.01.007
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2022CH09      Phys.Rev. C 105, 024319 (2022)

A.Chester, B.A.Brown, S.P.Burcher, M.P.Carpenter, J.J.Carroll, C.J.Chiara, P.A.Copp, B.P.Crider, J.T.Harke, D.E.M.Hoff, K.Kolos, S.N.Liddick, B.Longfellow, M.J.Mogannam, T.H.Ogunbeku, C.J.Prokop, D.Rhodes, A.L.Richard, O.A.Shehu, A.S.Tamashiro, R.Unz, Y.Xiao

Half-life measurement of the 199-keV isomeric state in ⁷⁶Ga

RADIOACTIVITY ⁷⁶Zn(β^-)[from ⁷⁶Cu β^- formed in ⁹Be(⁸⁶Kr, X), E=140 MeV/nucleon]; ⁷⁶Ga(IT)[from ⁷⁶Zn(β^-)]; measured Eβ, Iβ, Eγ, Iγ, βγ-coin. ⁷⁶Ga; deduced levels J, π, transition strength, T_1/2 of the 199-keV isomeric transition from time difference between pulses produced by β-decay populating the isomeric state and γ from the decay of the isomer. Systematics of low-lying levels in ^{72,74,76,78,80}Ga. Beam implantation in CeBr detector (NSCL-MSU ).

NUCLEAR STRUCTURE ⁷⁶Ga; calculated levels, J, π, transition strength. Shell model calculations in the jj44 model space with the jun45, jj44b, and jj44c Hamiltonians.

doi: 10.1103/PhysRevC.105.024319
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Data from this article have been entered in the XUNDL database. For more information, click here.

2022SA20      Phys.Lett. B 829, 137059 (2022)

M.Saxena, W.-J.Ong, Z.Meisel, D.E.M.Hoff, N.Smirnova, P.C.Bender, S.P.Burcher, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, R.Conaway, P.A.Copp, B.P.Crider, J.Derkin, A.Estrae, G.Hamad, J.T.Harke, R.Jain, H.Jayatissa, S.N.Liddick, B.Longfellow, M.Mogannam, F.Montes, N.Nepal, T.H.Ogunbeku, A.L.Richard, H.Schatz, D.Soltesz, S.K.Subedi, I.Sultana, A.S.Tamashiro, V.Tripathi, Y.Xiao, R.Zink

⁵⁷Zn β-delayed proton emission establishes the ⁵⁶Ni rp-process waiting point bypass

RADIOACTIVITY ⁵⁷Zn(β⁺p), (β⁺) [from ⁹Be(⁷⁸Kr, X)⁵⁷Zn, E=150 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ, Ep, Ip; deduced T_1/2, βp branching ratio, β-γ-p decay mode transitions. The Coupled Cyclotron Facility of NSCL.

doi: 10.1016/j.physletb.2022.137059
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Data from this article have been entered in the XUNDL database. For more information, click here.

2021CH56      Phys.Rev. C 104, 054314 (2021)

A.Chester, B.A.Brown, S.P.Burcher, M.P.Carpenter, J.J.Carroll, C.J.Chiara, P.A.Copp, B.P.Crider, J.T.Harke, D.E.M.Hoff, K.Kolos, S.N.Liddick, B.Longfellow, M.J.Mogannam, T.H.Ogunbeku, C.J.Prokop, D.Rhodes, A.L.Richard, O.A.Shehu, A.S.Tamashiro, R.Unz, Y.Xiao

Identification of a new isomeric state in ⁷⁶Zn following the β decay of ⁷⁶Cu

RADIOACTIVITY ⁷⁶Cu(β^-)[from ⁹Be(⁸⁶Kr, X), E=140 MeV/nucleon, followed by separation of fragments of interest using A1900 fragment separator at NSCL-MSU facility]; measured reaction products, particle identification plot of ions implanted in CeBr₃ detector, Eγ, Iγ, (⁷⁶Cu implants)γ-coin, γγ-coin, T_1/2 of a nanosecond isomer by fast timing method using an array of 16 HPGe clover detectors and 15 LaBr₃ detectors. ⁷⁶Zn; deduced levels, J, π, new isomer, Comparison with shell-model calculations.

NUCLEAR STRUCTURE ⁷⁶Zn; calculated levels, J, π, level T_1/2, isomers, proton and neutron occupancy numbers of negative-parity isomeric states using shell model with jj4b, jj4c and JUN45 interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.054314
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Data from this article have been entered in the XUNDL database. For more information, click here.

2020PI02      Nucl.Data Sheets 163, 249 (2020)

B.D.Pierson, L.R.Greenwood, S.C.Stave, J.T.Burke, S.W.Padgett, A.M.Prinke, J.M.Goda, J.A.Bounds, D.K.Hayes, A.S.Tamashiro, R.S.Wittman, G.Slavik, M.P.Dion, J.G.Burch, T.S.Palmer

Improved Cumulative Fission Yield Measurements with Fission Spectrum Neutrons on ²³⁸U

NUCLEAR REACTIONS ²³⁸U(n, F)⁸⁴Br/⁹³Y/⁹⁴Y/¹⁰⁴Tc/¹²⁸Sn/¹²⁹Sb/¹³⁰Sb/¹³¹Te/¹³³I/¹³⁴I/¹³⁵I/¹³⁸Xe/¹³⁹Ba/¹⁴¹Ba/¹⁴²Ba/¹⁴²La/¹⁴⁶Ce/¹⁴⁹Nd, E ∼ 2 MeV; measured fission products, Eγ, Iγ; deduced fission yields. Comparison with ENDF/B-VIII.0 library evaluations.

doi: 10.1016/j.nds.2019.12.006
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14584.