NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = J.Gombas Found 5 matches. 2021DO03 Phys.Rev. C 103, 025810 (2021) A.C.Dombos, A.Spyrou, F.Naqvi, S.J.Quinn, S.N.Liddick, A.Algora, T.Baumann, J.Brett, B.P.Crider, P.A.DeYoung, T.Ginter, J.Gombas, S.Lyons, T.Marketin, P.Moller, W.-J.Ong, A.Palmisano, J.Pereira, C.J.Prokop, P.Sarriguren, D.P.Scriven, A.Simon, M.K.Smith, S.Valenta Total absorption spectroscopy of the β decay of 101, 102Zr and 109Tc RADIOACTIVITY 101,102Zr, 109Tc(β-)[from 9Be(124Sn, X), E=120 MeV/nucleon, followed by separation of fragments using A1900 separator at NSCL-MSU]; measured Eγ, Iγ, implanted ions, (implants)γ-correlations using Summing NaI(Tl) (SuN) detector for total absorption spectroscopy; deduced β feedings as function of excitation energy, B(GT). Comparison with theoretical results from three different quasiparticle random-phase approximation (QRPA) models to investigate the ground-state shapes of the parent nuclei, and to test commonly used models that provide β-decay properties in r-process network calculations.
doi: 10.1103/PhysRevC.103.025810
2021GO10 Phys.Rev. C 103, 035803 (2021) J.Gombas, P.A.DeYoung, A.Spyrou, A.C.Dombos, A.Algora, T.Baumann, B.Crider, J.Engel, T.Ginter, E.Kwan, S.N.Liddick, S.Lyons, F.Naqvi, E.M.Ney, J.Pereira, C.Prokop, W.Ong, S.Quinn, D.P.Scriven, A.Simon, C.Sumithrarachchi β-decay feeding intensity distributions for 103, 104mNb RADIOACTIVITY 103,104mNb(β-)[from 9Be(124Sn, X), E not given, followed by separation of fragments using A1900 separator at NSCL-MSU]; measured reaction products and particle identification plot from 9Be(124Sn, X), Eγ, Iγ, total absorption gamma spectra from the decays of 103Nb and 104mNb using Summing NaI(Tl) (SuN) detector at the NSCL-MSU; deduced Iβ feedings to levels in 103Mo and 104Mo, cumulative B(GT) values. Comparison to predictions of quasiparticle random-phase approximation (QRPA) model. Relevance to antineutrino studies of nuclear reactors, and astrophysical r process.
doi: 10.1103/PhysRevC.103.035803
2021PE08 Phys.Rev. C 103, 055808 (2021) C.F.Persch, P.A.DeYoung, S.Lyons, A.Spyrou, S.N.Liddick, F.Naqvi, B.P.Crider, A.C.Dombos, J.Gombas, D.L.Bleuel, B.A.Brown, A.Couture, L.Crespo Campo, J.Engel, M.Guttormsen, A.C.Larsen, R.Lewis, S.Karampagia, S.Mosby, E.M.Ney, A.Palmisano, G.Perdikakis, C.J.Prokop, T.Renstrom, S.Siem, M.K.Smith, S.J.Quinn β-decay feeding intensity distributions of 71, 73Ni RADIOACTIVITY 71,73Ni(β-)[from 9Be(86Kr, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 fragment separator at NSCL-MSU facility]; measured implantation events and β particles using position-sensitive, double-sided, silicon-strip detector (DSSD), and two silicon PIN detectors for TOF and energy loss, Eγ, Iγ, half-lives of decays of 71,73Ni using a total absorption summing NaI(Tl) detector (SuN) surrounding the DSSD; deduced multiplicity spectra, Iβ(E) feedings, B(GT). GEANT4 and DICEBOX analysis of total absorption spectrum (TAS). Comparison with QRPA, and shell-model calculations, the latter using NuShellX@MSU code with JJ44B and JUN45 interaction Hamiltonians. Relevance to improvement in the nuclear input for r-process calculations. NUCLEAR REACTIONS 9Be(86Kr, X)71Ni/73Ni/71Cu/73Cu/, E=140 MeV/nucleon; measured yields of reaction products using A1900 fragment separator and two silicon PIN detectors for TOF and energy loss at NSCL-MSU facility.
doi: 10.1103/PhysRevC.103.055808
2020VO08 Phys.Rev. C 102, 014325 (2020) D.Votaw, P.A.DeYoung, T.Baumann, A.Blake, J.Boone, J.Brown, D.Chrisman, J.E.Finck, N.Frank, J.Gombas, P.Gueye, J.Hinnefeld, H.Karrick, A.N.Kuchera, H.Liu, B.Luther, F.Ndayisabye, M.Neal, J.Owens-Fryar, J.Pereira, C.Persch, T.Phan, T.Redpath, W.F.Rogers, S.Stephenson, K.Stiefel, C.Sword, A.Wantz, M.Thoennessen Low-lying level structure of the neutron-unbound N=7 isotones NUCLEAR REACTIONS 9Be(11Be, 8He), (11Be, 9Li), E=44 MeV/nucleon; 9Be(12B, 8He), (12B, 9Li), E=45 MeV/nucleon, [secondary 11Be and 12B beams from 9Be(16O, X), E=120 MeV/nucleon, followed by separation of ions of interest using A1900 Fragment Separator at the Coupled Cyclotron Facility of NSCL-MSU]; measured E(n), I(n), charged-particles, (particle)n-coin using the MoNA-LISA detector array for neutron detection and cathode readout drift chambers (CRDCs) for charged particles; deduced decay energy spectra of 9He and 10Li and neutron-unbound states. 9He, 10Li; deduced levels, resonances, widths, J, π, l-values of neutrons from the resonances in 9He and 10Li. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.102.014325
2019DO02 Phys.Rev. C 99, 015802 (2019) A.C.Dombos, A.Spyrou, F.Naqvi, S.J.Quinn, S.N.Liddick, A.Algora, T.Baumann, J.Brett, B.P.Crider, P.A.DeYoung, T.Ginter, J.Gombas, E.Kwan, S.Lyons, W.-J.Ong, A.Palmisano, J.Pereira, C.J.Prokop, D.P.Scriven, A.Simon, M.K.Smith, C.S.Sumithrarachchi β-decay half-lives of neutron-rich nuclides in the A=100--110 mass region RADIOACTIVITY 99Y, 101,102Zr, 102m,103,104mNb, 109Tc(β-)[from 9Be(124Sn, X), E=120 MeV/nucleon, followed by separation of reaction products using A1900 fragment separator]; measured (implants)γ-coin, time-of-flight, total energy loss of fragments, and half-lives from (implants)γ-correlated decay curves using the implantation station installed inside the Summing NaI(Tl) (SuN) detector for the total absorption spectroscopy (TAS) technique at the NSCL-MSU facility. Comparison with previous experimental values; compiled measured and evaluated half-lives in literature for the seven isotopes studied in this work. Relevance to B(GT) distributions, nuclear astrophysics, nuclear structure, and nuclear technology.
doi: 10.1103/PhysRevC.99.015802
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