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NSR database version of April 11, 2024.

Search: Author = J.M.Kelly

Found 8 matches.

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2022LO14      Phys.Rev. C 106, 045501 (2022)

J.Long, C.R.Nicoloff, D.W.Bardayan, F.D.Becchetti, D.Blankstein, C.Boomershine, D.P.Burdette, M.A.Caprio, L.Caves, P.J.Fasano, B.Frentz, S.L.Henderson, J.M.Kelly, J.J.Kolata, B.Liu, P.D.O'Malley, S.Y.Strauss, R.Zite, M.Brodeur

Precision half-life determination for the β+ emitter 13N

RADIOACTIVITY 13N(β+)[from 2H(12C, n), E=34 MeV]; measured β+; deduced T1/2, ft value. Comparison to previous experimental results; calculated B(GT). Calculations using ab initio no-core configuration interaction (NCCI) with the Daejeon16 interaction. TwinSol twin-solenoid facility at NSL coupled to NSL β-counting station (University of Notre Dame).

doi: 10.1103/PhysRevC.106.045501
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2020LO01      Phys.Rev. C 101, 015501 (2020)

J.Long, M.Brodeur, M.Baines, D.W.Bardayan, F.D.Becchetti, D.Blankstein, C.Boomershine, D.P.Burdette, A.M.Clark, B.Frentz, S.L.Henderson, J.M.Kelly, J.J.Kolata, B.Liu, K.T.Macon, P.D.O'Malley, A.Pardo, C.Seymour, S.Y.Strauss, B.Vande Kolk

Precision half-life measurement of 29P

RADIOACTIVITY 29P(β+)[from 2H(28Si, X), E=9 MeV, followed by separation of 29P using the TwinSol facility at the FN tandem accelerator of the University of Notre Dame, and implantation of 29P beam in the NSL β-decay counting station]; measured β spectra, precise half-life of the decay of 29P; deduced ft value for the β transition to the ground state of 29Si, Cabibbo-Kobayashi-Maskawa matrix element Vud, Fermi to Gamow-Teller mixing ratio; evaluated half-life using present and previous experimental values. Discussed in detail corrections and uncertainties. Comparison with previous half-life measurements.

doi: 10.1103/PhysRevC.101.015501
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2020VI04      Phys.Rev. C 101, 034312 (2020)

M.Vilen, J.M.Kelly, A.Kankainen, M.Brodeur, A.Aprahamian, L.Canete, R.P.de Groote, A.de Roubin, T.Eronen, A.Jokinen, I.D.Moore, M.R.Mumpower, D.A.Nesterenko, J.O'Brien, A.Pardo Perdomo, H.Penttila, M.Reponen, S.Rinta-Antila, R.Surman

Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP

ATOMIC MASSES 154Nd, 161Pm, 163Sm, 162,162m,163,164,165Eu, 163,163m,167Gd, 165,166,167,168Tb; measured time-of-flight ion-cyclotron-resonances (TOF-ICR) and phase-imaging ion-cyclotron-resonances (PI-ICR), frequency ratios, mass excesses using the JYFLTRAP double penning trap at the IGISOL facility of University of Jyvaskyla; deduced S(n), S(2n), pairing-gap energies, and average proton neutron interaction of valence nucleons. 162mEu, 163mGd; deduced absolute energies of the isomers. Comparison with previous experimental measurements, and with evaluated data in AME2016. Isotopes formed in U(p, F), E=25 MeV reaction. Discussed impact on solar r-process abundances as a function of the mass number.

doi: 10.1103/PhysRevC.101.034312
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019HO18      J.Phys.(London) G46, 083001 (2019)

C.J.Horowitz, A.Arcones, B.Cote, I.Dillmann, W.Nazarewicz, I.U.Roederer, H.Schatz, A.Aprahamian, D.Atanasov, A.Bauswein, T.C.Beers, J.Bliss, M.Brodeur, J.A.Clark, A.Frebel, F.Foucart, C.J.Hansen, O.Just, A.Kankainen, G.C.McLaughlin, J.M.Kelly, S.N.Liddick, D.M.Lee, J.Lippuner, D.Martin, J.Mendoza-Temis, B.D.Metzger, M.R.Mumpower, G.Perdikakis, J.Pereira, B.W.O'Shea, R.Reifarth, A.M.Rogers, D.M.Siegel, A.Spyrou, R.Surman, X.Tang, T.Uesaka, M.Wang

r-process nucleosynthesis: connecting rare-isotope beam facilities with the cosmos

doi: 10.1088/1361-6471/ab0849
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2018IZ01      Phys.Rev. C 97, 014309 (2018)

C.Izzo, G.Bollen, M.Brodeur, M.Eibach, K.Gulyuz, J.D.Holt, J.M.Kelly, M.Redshaw, R.Ringle, R.Sandler, S.Schwarz, S.R.Stroberg, C.S.Sumithrarachchi, A.A.Valverde, A.C.C.Villari

Precision mass measurements of neutron-rich Co isotopes beyond N=40

ATOMIC MASSES 68,69Co; measured time-of-flight ion cyclotron resonances (TOF-ICR), mass excesses using LEBIT Penning trap system at NSCL-MSU facility. Comparison with AME-2016 values. Systematics of S(2n) values in N=36-44 Fe, Co, Ni and Cu nuclides. Discussed low- and high-spin isomers in 68Co and 69Co, and concluded the main contribution from the high-spin activities.

RADIOACTIVITY 68,69Co(β-)[from 9Be(76Ge, X), E=130 MeV/nucleon followed by fragment selection using A1900 fragment separator]; measured Eγ, Iγ from the decay of 68Co. 68,69Co; calculated levels, J, π by ab initio approach using the valence-space in-medium similarity renormalization group (VS-IMSRG) framework based on two-nucleon (NN) and three-nucleon (3N) forces from chiral effective field theory; discussed energy ordering of the ground state and isomer.

doi: 10.1103/PhysRevC.97.014309
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2018VI02      Phys.Rev.Lett. 120, 262701 (2018)

M.Vilen, J.M.Kelly, A.Kankainen, M.Brodeur, A.Aprahamian, L.Canete, T.Eronen, A.Jokinen, T.Kuta, I.D.Moore, M.R.Mumpower, D.A.Nesterenko, H.Penttila, I.Pohjalainen, W.S.Porter, S.Rinta-Antila, R.Surman, A.Voss, J.Aysto

Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r-Process Calculations

ATOMIC MASSES 156,158Nd, 158,160Pm, 162Sm, 162,163Eu, 163,164,165,166Gd, 164Tb; measured time-of-flight spectra, frequency ratios; deduced mass-excess values. Comparison with AME16 evaluation.

doi: 10.1103/PhysRevLett.120.262701
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2017LO09      Phys.Rev. C 96, 015502 (2017)

J.Long, T.Ahn, J.Allen, D.W.Bardayan, F.D.Becchetti, D.Blankstein, M.Brodeur, D.Burdette, B.Frentz, M.R.Hall, J.M.Kelly, J.J.Kolata, P.D.O'Malley, B.E.Schultz, S.Y.Strauss, A.A.Valverde

Precision half-life measurement of 25Al

RADIOACTIVITY 25Al(EC), (β+)[from 2H(24Mg, n) at the NSL tandem accelerator facility of the University of Notre Dame]; measured Eβ, Iβ, half-life of 25Al decay; deduced world-averaged half-life, Fermi to Gamow-Teller mixing ratio ρ and correlation parameters, and values for various parameters of relevance for determining the Vud term from the 25Al mirror transition. Comparison with previous measurements.

doi: 10.1103/PhysRevC.96.015502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2016BR01      Phys.Rev. C 93, 025503 (2016)

M.Brodeur, C.Nicoloff, T.Ahn, J.Allen, D.W.Bardayan, F.D.Becchetti, Y.K.Gupta, M.R.Hall, O.Hall, J.Hu, J.M.Kelly, J.J.Kolata, J.Long, P.O'Malley, B.E.Schultz

Precision half-life measurement of 17F

RADIOACTIVITY 17F(β+)[from 2H(16O, X), E not given]; measured β radiation, half-life of 17F decay at the University of Notre Dame β-decay counting station; deduced mixing ratio ρ for the mixed transition between mirror nuclei and the correlation parameters based on Standard Model validity. Discussed uncertainty estimates. Comparison with previous experimental measurements.

NUCLEAR REACTIONS 2H(16O, X)12C/13C/14N/15O/16O/17O/17F, E not given; measured yields of reaction products at Notre Dame TwinSol facility.

doi: 10.1103/PhysRevC.93.025503
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Data from this article have been entered in the XUNDL database. For more information, click here.


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