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NSR database version of April 26, 2024.

Search: Author = J.T.Harke

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2024CO05      Phys.Rev.Lett. 132, 152503 (2024)

I.Cox, Z.Y.Xu, R.Grzywacz, W.-J.Ong, B.C.Rasco, N.Kitamura, D.Hoskins, S.Neupane, T.J.Ruland, J.M.Allmond, T.T.King, R.S.Lubna, K.P.Rykaczewski, H.Schatz, B.M.Sherrill, O.B.Tarasov, A.D.Ayangeakaa, H.C.Berg, D.L.Bleuel, G.Cerizza, J.Christie, A.Chester, J.Davis, C.Dembski, A.A.Doetsch, J.G.Duarte, A.Estrade, A.Fijalkowska, T.J.Gray, E.C.Good, K.Haak, S.Hanai, J.T.Harke, C.Harris, K.Hermansen, D.E.M.Hoff, R.Jain, M.Karny, K.Kolos, A.Laminack, S.N.Liddick, B.Longfellow, S.Lyons, M.Madurga, M.J.Mogannam, A.Nowicki, T.H.Ogunbeku, G.Owens-Fryar, M.M.Rajabali, A.L.Richard, E.K.Ronning, G.E.Rose, K.Siegl, M.Singh, A.Spyrou, A.Sweet, A.Tsantiri, W.B.Walters, R.Yokoyama

Proton Shell Gaps in N=28 Nuclei from the First Complete Spectroscopy Study with FRIB Decay Station Initiator

RADIOACTIVITY ⁴⁵Cl(β^-) [from ⁹Be(⁸²Se, X), E=165 MeV/nucleon]; measured decay products, Eγ, Iγ, Eβ, Iβ; deduced β-decay strength distribution, the transitioning of neutrons into protons excited across the Z=20 shell gap. Comparison with shell model calculations using SDPF-MU interaction. The Facility for Rare Isotope Beams (FRIB) with the FRIB Decay Station Initiator.

doi: 10.1103/PhysRevLett.132.152503
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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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2023BH05      Phys.Rev. C 108, 024312 (2023)

Soumi.Bhattacharya, V.Tripathi, S.L.Tabor, A.Volya, P.C.Bender, C.Benetti, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, K.Childers, B.R.Clark, B.P.Crider, J.T.Harke, R.Jain, S.N.Liddick, R.S.Lubna, S.Luitel, B.Longfellow, M.J.Mogannam, T.H.Ogunbeku, J.Perello, A.L.Richard, E.Rubino, S.Saha, O.A.Shehu, R.Unz, Y.Xiao, Y.Zhu

β^- decay of neutron-rich ⁴⁵Cl located at the magic number N=28

RADIOACTIVITY ⁴⁵Cl(β^-), (β^-n)[from Be(⁴⁸Ca, X), E=140 MeV/nucleon]; measured Eγ, Iγ, Eβ, Iβ, βγ-coin; deduced T_1/2, Q values, β-feedings, branchings; calculated logft. ^44,45Ar; deduced levels, J, π. Comparison to shell-model calculations with FSU interaction. Systematics of the first excited 2⁺ state energy for the even-A Ar isotopes (from N= 20 to 30). Beta Counting System (BCS) equipped with a 986 υm thick pixelated (40 strips x 40 strips) DSSD detector, followed by SSCD and surrounded by 16 Clover detectors at NSCL.

NUCLEAR STRUCTURE ^43,44,45Ar; calculated levels, J, π, B(M1), B(E2), proton and neutron occupation numbers. Shell-model calculations with FSU interaction. Comparison to experimental data.

doi: 10.1103/PhysRevC.108.024312
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2023GR04      Phys.Rev.Lett. 130, 242501 (2023)

T.J.Gray, J.M.Allmond, Z.Xu, T.T.King, R.S.Lubna, H.L.Crawford, V.Tripathi, B.P.Crider, R.Grzywacz, S.N.Liddick, A.O.Macchiavelli, T.Miyagi, A.Poves, A.Andalib, E.Argo, C.Benetti, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, J.Chan, A.Chester, J.Christie, B.R.Clark, I.Cox, A.A.Doetsch, J.Dopfer, J.G.Duarte, P.Fallon, A.Frotscher, T.Gaballah, J.T.Harke, J.Heideman, H.Huegen, J.D.Holt, R.Jain, N.Kitamura, K.Kolos, F.G.Kondev, A.Laminack, B.Longfellow, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.Neupane, A.Nowicki, T.H.Ogunbeku, W.-J.Ong, C.Porzio, C.J.Prokop, B.C.Rasco, E.K.Ronning, E.Rubino, T.J.Ruland, K.P.Rykaczewski, L.Schaedig, D.Seweryniak, K.Siegl, M.Singh, A.E.Stuchbery, S.L.Tabor, T.L.Tang, T.Wheeler, J.A.Winger, J.L.Wood

Microsecond Isomer at the N=20 Island of Shape Inversion Observed at FRIB

RADIOACTIVITY ³²Na(IT), (β^-) [from ⁹Be(⁴⁸Ca, X), E=172.3 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced γ-ray energies, partial level scheme, isomeric T_1/2, B(E2), single-particle occupancies. Comparison with calculations. The Advanced Rare Isotope Separator (ARIS), the FRIB Decay Station initiator (FDSi).

doi: 10.1103/PhysRevLett.130.242501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2023LU07      Phys.Rev. C 108, 014329 (2023)

R.S.Lubna, S.N.Liddick, T.H.Ogunbeku, A.Chester, J.M.Allmond, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, K.L.Childers, P.Chowdhury, J.Christie, B.R.Clark, R.M.Clark, I.Cox, H.L.Crawford, B.P.Crider, A.A.Doetsch, P.Fallon, A.Frotscher, T.Gaballah, T.J.Gray, R.Grzywacz, J.T.Harke, A.C.Hartley, R.Jain, T.T.King, N.Kitamura, K.Kolos, F.G.Kondev, E.Lamere, R.Lewis, B.Longfellow, S.Lyons, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.K.Neupane, W.-J.Ong, D.Perez-Loureiro, C.Porzio, C.J.Prokop, A.L.Richard, E.K.Ronning, E.Rubino, K.Rykaczewski, D.Seweryniak, K.Siegl, U.Silwal, M.Singh, D.P.Siwakoti, D.C.Smith, M.K.Smith, S.L.Tabor, T.L.Tang, V.Tripathi, A.Volya, T.Wheeler, Y.Xiao, Z.Xu

β decay of ³⁶Mg and ³⁶Al: Identification of a β-decaying isomer in ³⁶Al

RADIOACTIVITY ³⁶Mg, ³⁶Al(β^-)[from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon for experiment at NSCL and ⁹Be(⁴⁸Ca, X), E=172.3 MeV/nucleon for experiment at FRIB]; ³⁶Al, ^36mAl(β^-)[from ³⁶Mg(β^-); measured Eγ, Iγ; deduced T_1/2. ³⁶Al; deduced levels, J, π, newly-observed β-decaying isomer, T_1/2 of the isomer. ³⁶Si; deduced levels, J, π. Comparison to shell model calculations performed with the FSU interaction using code CoSMo. For experiment at NSCL - CeBr₃ based implantation detector with position-sensitive photomultiplier tube was surrounded by 16 segmented germanium detectors (SeGa) and 15 LaBr₃ detectors. For experiment at FRIB - YSO scintillator based implantation detector segmented into 48x48 pixels was surrounded by 11 HPGe clover detectors and LaBr₃ detectors from one side and the neutron detector array VANDLE from the other side.

doi: 10.1103/PhysRevC.108.014329
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Data from this article have been entered in the XUNDL database. For more information, click here.

2022BU13      Phys.Rev. C 105, 045805 (2022)

S.Burcher, K.A.Chipps, R.O.Hughes, C.S.Reingold, A.Saastamoinen, J.T.Harke, N.Cooper, S.Ahn, J.M.Allmond, H.Clark, J.A.Cizewski, M.R.Hall, J.Hooker, H.Jayatissa, K.L.Jones, S.Ota, S.D.Pain, K.Schmidt, A.Simon, S.Upadhyayula

Developing the³²S(p, d)³¹S^*(p)(γ) reaction to probe the ³⁰P(p, γ)³¹S reaction rate in classical novae

NUCLEAR REACTIONS ³²S(p, d), E=33 MeV; measured reaction products, Ep, Ip, Eγ, Iγ, deuteron spectra, (deuteron)p-coin, (particle)γ-coin, angular distributions; deduced s(θ). ³¹S; deduced levels, J, π, proton decay width of excited states, proton decay branching ratios. DWBA analysis. Comparison to other experimental data. Discussed relevance to resonances investigations in astrophysically important ³⁰P(p, γ) reaction. Hyperion setup consisting of 12 Compton-suppressed HPGe clover detectors, a silicon telescope downstream of the target, and a single silicon detector upstream of the target at K150 cyclotron (Texas A-M Cyclotron Institute).

doi: 10.1103/PhysRevC.105.045805
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2746. Data from this article have been entered in the XUNDL database. For more information, click here.

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.

2022CR03      Phys.Rev.Lett. 129, 212501 (2022)

H.L.Crawford, V.Tripathi, J.M.Allmond, B.P.Crider, R.Grzywacz, S.N.Liddick, A.Andalib, E.Argo, C.Benetti, S.Bhattacharya, C.M.Campbell, M.P.Carpenter, J.Chan, A.Chester, J.Christie, B.R.Clark, I.Cox, A.A.Doetsch, J.Dopfer, J.G.Duarte, P.Fallon, A.Frotscher, T.Gaballah, T.J.Gray, J.T.Harke, J.Heideman, H.Heugen, R.Jain, T.T.King, N.Kitamura, K.Kolos, F.G.Kondev, A.Laminack, B.Longfellow, R.S.Lubna, S.Luitel, M.Madurga, R.Mahajan, M.J.Mogannam, C.Morse, S.Neupane, A.Nowicki, T.H.Ogunbeku, W.-J.Ong, C.Porzio, C.J.Prokop, B.C.Rasco, E.K.Ronning, E.Rubino, T.J.Ruland, K.P.Rykaczewski, L.Schaedig, D.Seweryniak, K.Siegl, M.Singh, S.L.Tabor, T.L.Tang, T.Wheeler, J.A.Winger, Z.Xu

Crossing N = 28 Toward the Neutron Drip Line: First Measurement of Half-Lives at FRIB

RADIOACTIVITY ^44,45P, ^42,43Si, ^39,40,41Al, ^36,37,38Mg, ³⁵Na, ³²Ne, ²⁹F(β^-), (β^-n), (β^-2n) [from ⁹Be(⁴⁸Ca, X), E=172.3 MeV/nucleon]; measured decay products, Eβ, Iβ, En, In; deduced T_1/2. Comparison with the latest quasiparticle random phase approximation and shell-model calculations and available data. The Facility for Rare Isotope Beams (FRIB) with the FRIB decay station initiator.

doi: 10.1103/PhysRevLett.129.212501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2022RE03      Phys.Rev. C 105, 034612 (2022)

C.S.Reingold, A.Simon, R.O.Hughes, J.T.Harke, K.A.Chipps, S.Burcher, D.T.Blankstien, J.A.Cizewski, N.Cooper, M.Hall, S.Ota, B.Schroeder, S.Upadhyayula

Spin inhibition in ψ-decay probabilities for states above S_n in Sm and Dy nuclei

NUCLEAR REACTIONS ¹⁴⁸Sm(p, d), ¹⁴⁸Sm, ¹⁶²Dy(p, t), E=29.55 MeV; measured charged particles, Eγ, Iγ, deuteron and triton spectra, (particle)γ-coin. ^146,147Sm, ¹⁶⁰Dy; deduced γ-decay probabilities. Investigated the eefect of spin-inhibition for high-spin states above neutron separation threshold. Hyperion setup comprised of Compton-suppressed clover detectors for γ-ray measurements and a ΔE-E telescope for particle energy measurements and identification. Beam from K150 cyclotron at Texas A

doi: 10.1103/PhysRevC.105.034612
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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.

2022TR03      Phys.Rev. C 106, 064314 (2022)

V.Tripathi, S.Bhattacharya, E.Rubino, C.Benetti, J.F.Perello, S.L.Tabor, S.N.Liddick, P.C.Bender, M.P.Carpenter, J.J.Carroll, A.Chester, C.J.Chiara, K.Childers, B.R.Clark, B.P.Crider, J.T.Harke, B.Longfellow, R.S.Lubna, S.Luitel, T.H.Ogunbeku, A.L.Richard, S.Saha, N.Shimizu, O.A.Shehu, Y.Utsuno, R.Unz, Y.Xiao, S.Yoshida, Y.Zhu

β^- decay of exotic P and S isotopes with neutron number near 28

RADIOACTIVITY ^42,43,44P, ^44,46S(β^-), (β^-n) [from Be(⁴⁸Ca, X), E=140 MeV/nucleon)]; ⁴¹S(β^-) [from ⁴²P(β^-n]; measured Iβ, Eγ, Iγ, βγ-coin, (implant)γ-coin; deduced T_1/2, logft, delayed neutron emission probabilities. ⁴²P; deduced J, π of the ground state. ^42,41S, ⁴¹Cl; deduced levels, J, π, transition intensities. The half-lives were extracted from the fitting of decay curves. Comparison to calculations performed with shell-model using SDPFSDG-MU interaction. Beta Counting System (BCS) - 40x40 DSSD as the implant and β detector, surrounded by a γ-array of 16 Clover detectors in close geometry (NSCL).

doi: 10.1103/PhysRevC.106.064314
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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.

2019WA33      Phys.Rev. C 100, 064609 (2019)

B.S.Wang, J.T.Harke, O.A.Akindele, R.J.Casperson, R.O.Hughes, J.D.Koglin, K.Kolos, E.B.Norman, S.Ota, A.Saastamoinen

Determining the average prompt-fission-neutron multiplicity for ²³⁹Pu(n, f) via a ²⁴⁰Pu(α, α' f) surrogate reaction

NUCLEAR REACTIONS ²⁴⁰Pu(α, α'F), E=53.9 MeV; measured fission fragments, charged particles, scattered α particles, Eα, Iα, E(n), I(n), α(fission fragment)- and αn(fission fragment)-coin using the NeutronSTARS array and NeutronBall at the K150 Cyclotron facility of Texas A and M University; deduced particle-identification plot for p, d, t, ³He and α particles. ²³⁹Pu(n, F), E=0.25-26.25 MeV; deduced average prompt-fission-neutron multiplicity using the results from surrogate reaction ²⁴⁰Pu(α, a°F). Comparison with previous experimental results from direct measurements.

doi: 10.1103/PhysRevC.100.064609
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14601.