NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = A.Saastomoinen Found 123 matches. Showing 1 to 100. [Next]2024LU04 Phys.Rev. C 109, 025801 (2024) Z.Luo, M.Barbui, J.Bishop, G.Chubarian, V.Z.Goldberg, E.Harris, E.Koshchiy, C.E.Parker, M.Roosa, A.Saastamoinen, D.P.Scriven, G.V.Rogachev Radiative decay branching ratio of the Hoyle state
doi: 10.1103/PhysRevC.109.025801
2023BI03 Phys.Rev.Lett. 130, 222501 (2023) J.Bishop, G.V.Rogachev, S.Ahn, M.Barbui, S.M.Cha, E.Harris, C.Hunt, C.H.Kim, D.Kim, S.H.Kim, E.Koshchiy, Z.Luo, C.Park, C.E.Parker, E.C.Pollacco, B.T.Roeder, M.Roosa, A.Saastamoinen, D.P.Scriven First Observation of the β3αp Decay of 13O via β-Delayed Charged-Particle Spectroscopy RADIOACTIVITY 13O(β+p3α) [from 3He(14N, 13O), E=15.1 MeV/nucleon]; measured decay products, Eα, Iα. 13N; deduced β-delayed 3αp branching ratio, four previously unknown α-decaying excited states in 13N. Comparison with systematics. The K500 Cyclotron at Texas AM University, the Texas Active Target (TexAT) time projection chamber.
doi: 10.1103/PhysRevLett.130.222501
2023DR02 Phys.Rev. C 107, L061303 (2023) N.Dronchi, J.Berkman, R.J.Charity, J.M.Elson, L.G.Sobotka, A.G.Thomas, A.Saastamoinen, M.Barbui, J.Bishop, C.E.Parker, B.T.Roeder, G.V.Rogachev, D.P.Scriven, S.T.Marley, R.M.Shaffer Search for an s-wave resonance in 7Li just above the proton-decay threshold NUCLEAR REACTIONS 2H(6He, n)7Li, E=6.4 MeV/nucleon; measured charged particles from 7Li excited states decay; deduced invariant mass, resonances. 6,7Li, 8Be; deduced energies and widths of the states. Charged particles identified with array of 4 Si-Si telescopes from HIRA array. Secondary beam produced from 7Li(d, 3He)6He reaction at K150 cyclotron (Texas AM University Cyclotron Institute).
doi: 10.1103/PhysRevC.107.L061303
2023EL04 Phys.Lett. B 844, 138072 (2023) Z.Elekes, V.Panin, T.R.Rodriguez, K.Sieja, D.S.Ahn, A.Al-Adili, H.Baba, A.I.Stefanescu, K.J.Cook, Cs.Dosa, N.Fukuda, J.Gao, J.Gibelin, K.I.Hahn, Z.Halasz, S.W.Huang, T.Isobe, M.M.Juhasz, D.Kim, T.Kobayashi, Y.Kondo, Z.Korkulu, A.Kurihara, I.Kuti, H.Miki, K.Miki, T.Motobayashi, H.Otsu, A.Saastamoinen, M.Sasano, H.Sato, T.Shimada, Y.Shimizu, L.G.Sobotka, I.Stefanescu, L.Stuhl, H.Suzuki, H.Takeda, Y.Togano, T.Tomai, L.Trache, D.Tudor, T.Uesaka, Y.Utsuki, H.Wang, A.Yasuda, K.Yoneda, Y.Yoshitome Shape coexistence in 66Se NUCLEAR REACTIONS 12C(67Se, n)66Se, E=170-250 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, γ-ray production σ, J, π, partial level scheme, shape coexistence. Comparison with theoretical calculations. The CATANA array, Radioactive Isotope Beam Factory operated by the RIKEN Nishina Center and by the Center for Nuclear Study of the University of Tokyo.
doi: 10.1016/j.physletb.2023.138072
2023PA44 Nucl.Instrum.Methods Phys.Res. B541, 221 (2023) C.Park, S.Ahn, S.Bae, J.Bishop, S.M.Cha, K.Y.Chae, S.Do, G.M.Gu, K.I.Hahn, B.Hong, A.Kim, C.Kim, C.H.Kim, D.Kim, G.Kim, M.J.Kim, S.H.Kim, Y.H.Kim, Y.Kim, E.Koshchiy, B.Moon, C.E.Parker, G.V.Rogachev, A.Saastamoinen TexAT detector upgrade for 14O(α, p)17F cross section measurement NUCLEAR REACTIONS 4He(14N, α), E=2.97 MeV/nucleon; 4He(14O, p)17F, E(cm) = 7 MeV; measured reaction products, Eα, Iα, Ep, Ip; deduced σ. Comparison with available data. The Texas Active Target time projection chamber (TexAT) developed by Texas AM University.
doi: 10.1016/j.nimb.2023.04.056
2022BA39 Phys.Rev. C 106, 054310 (2022) M.Barbui, A.Volya, E.Aboud, S.Ahn, J.Bishop, V.Z.Goldberg, J.Hooker, C.H.Hunt, H.Jayatissa, Tz.Kokalova, E.Koshchiy, S.Pirrie, E.Pollacco, B.T.Roeder, A.Saastamoinen, S.Upadhyayula, C.Wheldon, G.V.Rogachev α-cluster structure of 18Ne NUCLEAR REACTIONS 4He(14O, α), E=61.8 MeV; measured reaction product, Eα, Iα, angular distribution; deduced σ(θ), excitation function of 18Ne. 18Ne; deduced resonances J, π, resonance total and partial widths. 18Ne, O; calculated levels J, π. Analysis with a multichannel R-matrix approach. Shell model with FSU interaction Hamiltonian calculations. Comparison with other experimental data. TexAT active target at magnetic achromat recoil separator (Cyclotron Institute at Texas AM University).
doi: 10.1103/PhysRevC.106.054310
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
2022CI04 Phys.Rev. C 106, 014317 (2022) A.A.Ciemny, C.Mazzocchi, W.Dominik, A.Fijalkowska, J.Hooker, C.Hunt, H.Jayatissa, L.Janiak, G.Kaminski, E.Koshchiy, M.Pfutzner, M.Pomorski, B.Roeder, G.V.Rogachev, A.Saastamoinen, S.Sharma, N.Sokolowska, W.Satula, J.Singh β-delayed charged-particle decay of 22, 23Si RADIOACTIVITY 22,23Si(β+), (β+p), (β+2p); 23Si(β+3p), (β+α)[22,23Si activities from Ni(28Si, X), E=45 MeV/nucleon at the Texas A and M University K500 superconducting cyclotron, followed by separation of fragments using momentum achromat recoil separator (MARS)]; measured reaction fragments, particle spectra, E(p), I(p) using optical-readout time-projection chamber (OTPC). 23Al, 22Mg, 21Na; deduced levels, J, π. 22Si, 23Si; deduced T1/2 of ground states, and absolute branching ratios for the observed decay modes; calculated Gamow-Teller matrix elements using angular-momentum-projected (AMP) method with DFT-NCCI module. 23Al; calculated levels, J, π using multireference density-functional-rooted (DFT) calculations, and compared with shell-model calculations in literature. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.106.014317
2022ST07 Eur.Phys.J. A 58, 223 (2022) A.I.Stefanescu, V.Panin, L.Trache, T.Motobayashi, H.Otsu, A.Saastamoinen, T.Uesaka, L.Stuhl, J.Tanaka, D.Tudor, I.C.Stefanescu, A.E.Spiridon, K.Yoneda, H.Baba, M.Kurokawa, Y.Togano, Z.Halasz, M.Sasano, S.Ota, Y.Kubota, D.S.Ahn, T.Kobayashi, Z.Elekes, N.Fukuda, H.Takeda, D.Kim, E.Takada, H.Suzuki, K.Yoshida, Y.Shimizu, H.N.Liu, Y.L.Sun, T.Isobe, J.Gibelin, P.J.Li, J.Zenihiro, F.M.Marques, M.N.Harakeh, G.G.Kiss, A.Kurihara, M.Yasuda, T.Nakamura, S.Park, Z.Yang, T.Harada, M.Nishimura, H.Sato, I.S.Hahn, K.Y.Chae, J.M.Elson, L.G.Sobotka, C.A.Bertulani Silicon tracker array for RIB experiments at SAMURAI
doi: 10.1140/epja/s10050-022-00873-w
2021BI06 Phys.Rev. C 103, L051303 (2021) J.Bishop, G.V.Rogachev, S.Ahn, E.Aboud, M.Barbui, A.Bosh, J.Hooker, C.Hunt, H.Jayatissa, E.Koshchiy, R.Malecek, S.T.Marley, M.Munch, E.C.Pollacco, C.D.Pruitt, B.T.Roeder, A.Saastamoinen, L.G.Sobotka, S.Upadhyayula Evidence against the Efimov effect in 12C from spectroscopy and astrophysics RADIOACTIVITY 12N(β+); 12B(β-); measured β-delayed charged particles, Eα, Iα from the decay of 40-MeV 12N beam stopped inside the active-area of the TexAT (Texas Active target) TPC (Time Projection Chamber), Eγ, Iγ, γγ-coin from the decay of 12B using Gammasphere array at ANL. 12C; deduced no evidence for an hypothetical state predicted by Efimov effect at 7.458 MeV from a combined analysis of the two experiments involving charged-particle spectroscopy at Texas A and M, and γ-ray measurements at ANL, along with astrophysical rate calculations. Relevance to rate required for stars to undergo the red giant phase.
doi: 10.1103/PhysRevC.103.L051303
2021CA19 Phys.Rev. C 104, L022802 (2021) L.Canete, G.Lotay, G.Christian, D.T.Doherty, W.N.Catford, S.Hallam, D.Seweryniak, H.M.Albers, S.Almaraz-Calderon, E.A.Bennett, M.P.Carpenter, C.J.Chiara, J.P.Greene, C.R.Hoffman, R.V.F.Janssens, J.Jose, A.Kankainen, T.Lauritsen, A.Matta, M.Moukaddam, S.Ota, A.Saastamoinen, R.Wilkinson, S.Zhu New constraints on the 25Al (p, γ) reaction and its influence on the flux of cosmic γ rays from classical nova explosions NUCLEAR REACTIONS 11B(16O, p)26Mg, E=19 MeV from Argonne ATLAS accelerator; measured Eγ, Iγ, γγ-coin, γ(θ) and level half-lives by DSAM using Gammasphere array of 99 HPGe detectors. 2H(25Mg, p)26Mg, E=10 MeV/nucleon from Texas A and M cyclotron; measured outgoing protons and scattered deuterons using the TIARA Si array, and 26Mg recoils by the MDM-2 magnetic spectrometer with Oxford ionization chamber, angular distributions of scattered deuterons and protons. 26Mg; deduced levels, J, π, resonances, spectroscopic factors. 26Si; deduced levels, resonances, J, π, Γp, Γγ, resonance strengths by comparing with the level structures of mirror nucleus 26Mg. 25Al(p, γ)26Si, T=0.2-0.4 GK; deduced stellar reaction rate by considering the contribution of resonant states in 26Si, galactic abundance of 26Al from classical novae; performed nova outburst simulations using the hydrodynamic Lagrangian time-implicit code SHIVA.
doi: 10.1103/PhysRevC.104.L022802
2021LI22 Phys.Rev. C 103, 044613 (2021) R.Linares, M.Sinha, E.N.Cardozo, V.Guimaraes, G.V.Rogachev, J.Hooker, E.Koshchiy, T.Ahn, C.Hunt, H.Jayatissa, S.Upadhyayula, B.Roeder, A.Saastomoinen, J.Lubian, M.Rodriguez-Gallardo, J.Casal, K.C.C.Pires, M.Assuncao, Y.Penionzhkevich, S.Lukyanov Elastic scattering measurements for the 10C+ 208Pb system at Elab = 66 MeV NUCLEAR REACTIONS 208Pb(10C, 10C), E=66 MeV, [10C secondary beam from 1H(10B, 10C), E=9.6 MeV/nucleon primary reaction, followed by selection of 10C beam by the Momentum Achromatic Recoil Spectrometer (MARS) at the K500 superconducting Cyclotron Institute of Texas A and M University]; measured elastically scattered 10C ions, angular distribution of scattered 10C, total σ using ΔE-E telescope of double-sided silicon strip detectors (DSSSDs); deduced suppression of the Fresnel peak. Comparison with optical model, coupled channels, and 3-body and 4-body continuum-discretized coupled-channels (CDCC) calculations using 9B+p, 6Be+α, and 8Be+p+p cluster configurations of 10C with a Brunnian (super-Borromean) structure; analyzed reaction cross sections in literature for the several projectiles on 208Pb target.
doi: 10.1103/PhysRevC.103.044613
2021OT02 Phys.Rev. C 104, 055806 (2021) S.Ota, G.Christian, W.N.Catford, G.Lotay, M.Pignatari, U.Battino, E.A.Bennett, S.Dede, D.T.Doherty, S.Hallam, F.Herwig, J.Hooker, C.Hunt, H.Jayatissa, A.Matta, M.Moukaddam, E.Rao, G.V.Rogachev, A.Saastamoinen, D.Scriven, J.A.Tostevin, S.Upadhyayula, R.Wilkinson (6Li, d) and (6Li, t) reactions on 22Ne and implications for s-process nucleosynthesis NUCLEAR REACTIONS 6Li(22Ne, d)26Mg, 6Li(22Na, t)25Mg, E=154 MeV; 2H(22Ne, p)23Ne, E not given; measured reaction products, E(d), I(d), E(p), I(p), Eγ, Iγ, 26Mg and 25Mg recoils, (26Mg)γ-coin, (25Mg)γ-coin, (particle)(particle)-coin, σ(θ) using TIARA Si detector array of two sets of Si detectors, 'Hyball' and 'Barrel', MDM high-resolution and broad range magnetic spectrometer, and array of four HPGe detectors at the K150 cyclotron of Texas A and M University. 23Ne, 25Mg, 26Mg; deduced levels, J, π, resonances, resonances in the Gamow window of 22Ne(α, n)25Mg reaction, spectroscopic factors, α-spectroscopic factors for 26Mg, resonance strengths, impact of 22Ne+α resonances on s-process nucleosynthesis; comparison of σ(θ) data with DWBA calculations using FRESCO code. Comparison with previous experimental results. 22Ne(α, n), (α, γ); calculated s-process overproduction factors in stars 3 and 5 times the mass of the sun for A=60-210 isotopes.
doi: 10.1103/PhysRevC.104.055806
2021ZA03 Phys.Lett. B 816, 136256 (2021) J.C.Zamora, V.Guimaraes, G.V.Rogachev, S.Ahn, J.Lubian, E.N.Cardozo, E.Aboud, M.Assuncao, M.Barbui, J.Bishop, A.Bosh, J.Hooker, C.Hunt, H.Jayatissa, E.Koshchiy, S.Lukyanov, R.O'Dwyer, Y.Penionzhkevich, B.T.Roeder, A.Saastamoinen, S.Upadhyayula Direct fusion measurement of the 8B proton-halo nucleus at near-barrier energies NUCLEAR REACTIONS 40Ar(8B, X), E=5.1 MeV/nucleon; measured reaction products; deduced fusion σ, barrier parameters. Universal Fusion Function (UFF) parameterization, comparison with available data.
doi: 10.1016/j.physletb.2021.136256
2020BI11 Phys.Rev. C 102, 041303 (2020) J.Bishop, G.V.Rogachev, S.Ahn, E.Aboud, M.Barbui, A.Bosh, C.Hunt, H.Jayatissa, E.Koshchiy, R.Malecek, S.T.Marley, E.C.Pollacco, C.D.Pruitt, B.T.Roeder, A.Saastamoinen, L.G.Sobotka, S.Upadhyayula Almost medium-free measurement of the Hoyle state direct-decay component with a TPC RADIOACTIVITY 12N(β+), (β+α)[from 3He(10B, 12N), E=11 MeV/nucleon at K500 cyclotron at the Cyclotron Institute at Texas A and M University, followed by isotopic separation using Momentum Achromatic Recoil Spectrometer]; measured β-delayed charged-particles using Texas active target time-projection chamber (TPC). 12C; deduced upper limit for the nonsequential component of the decay of the excited 0+, Hoyle state in an almost medium-free reaction. Comparison with previous experimental results, and with predictions from Faddeev calculations.
doi: 10.1103/PhysRevC.102.041303
2020BI15 Nucl.Instrum.Methods Phys.Res. A964, 163773 (2020) J.Bishop, G.V.Rogachev, S.Ahn, E.Aboud, M.Barbui, P.Baron, A.Bosh, E.Delagnes, J.Hooker, C.Hunt, H.Jayatissa, E.Koshchiy, R.Malecek, S.T.Marley, R.O'Dwyer, E.C.Pollacco, C.Pruitt, B.T.Roeder, A.Saastamoinen, L.G.Sobotka, S.Upadhyayula Beta-delayed charged-particle spectroscopy using TexAT RADIOACTIVITY 12N(IT), (EC), 12C(3α), 8Be(2α) [from 3He(10B, n)12N, E=11 MeV/nucleon]; measured decay products, Eα, Iα; deduced branching ratio of 12N to states in 12C above the 3-α threshold, the total branching ratio to the Hoyle state, 12N T1/2 using the β-delayed charged-particle-decay. Comparison with available data.
doi: 10.1016/j.nima.2020.163773
2020IA01 Phys.Rev. C 101, 015504 (2020) V.E.Iacob, J.C.Hardy, H.I.Park, M.Bencomo, L.Chen, V.Horvat, N.Nica, B.T.Roeder, A.Saastamoinen New precise half-life measurement for the superallowed β+ emitter 34Ar RADIOACTIVITY 34Ar(β+) [from 1H(35Cl, 2n), E=30 MeV/nucleon at the K500 superconducting cyclotron of Texas A and M University, followed by separation of fragments using the Momentum Achromat Recoil Spectrometer (MARS)]; measured Eβ, decay time spectrum, precise T1/2 of 34Ar decay using 4π proportional gas counter; deduced ft value for the superallowed β transition. Data analyzed as a linked parent-daughter pair. Discussed uncertainty budget. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.101.015504
2020IA02 Phys.Rev. C 101, 045501 (2020) V.E.Iacob, J.C.Hardy, H.I.Park, M.Bencomo, L.Chen, V.Horvat, N.Nica, B.T.Roeder, A.Saastamoinen, I.S.Towner Precise β branching-ratio measurement for the 0+ → 0+ superallowed decay of 34Ar RADIOACTIVITY 34Ar(β+), (EC)[from 1H(35Cl, 2n), E=30 MeV/nucleon, followed by separation of fully stripped reaction ejectiles using the MARS spectrometer at the K500 superconducting cyclotron at Texas A and M University]; measured Eβ+, Iβ+, Eγ, Iγ, β+γ-coin. 34Cl; deduced levels, J, π, β-branching ratio, EC to β+ emission ratios, logft, superallowed 0+ to 0+ β transition, isospin-symmetry-breaking correction, ratios of ft values for the mirror pair of superallowed transitions 34Ar to 34Cl and 34Cl to 34S. Comparison with previous experimental data, and with shell model calculations with Woods-Saxon radial wave functions. Systematics of logft ratios in A=26, 34, 38 and 42 mirror pairs. Relevance to up-down quark-mixing element Vud of the Cabibbo-Kobayashi-Maskawa matrix.
doi: 10.1103/PhysRevC.101.045501
2020JA02 Phys.Lett. B 802, 135267 (2020) H.Jayatissa, G.V.Rogachev, V.Z.Goldberg, E.Koshchiy, G.Christian, J.Hooker, S.Ota, B.T.Roeder, A.Saastamoinen, O.Trippella, S.Upadhyayula, E.Uberseder Constraining the 22Ne(α, γ))26Mg and 22Ne(α, n)25Mg reaction rates using sub-Coulomb α-transfer reactions NUCLEAR REACTIONS 6Li(22Ne, d), E(cm)=4.6 MeV; 6Li(22Ne, t), E(cm)=5.3 MeV; measured reaction products; deduced excitation energies, σ, resonance parameters, astrophysical rates.
doi: 10.1016/j.physletb.2020.135267
2020OT01 Phys.Lett. B 802, 135256 (2020) S.Ota, G.Christian, G.Lotay, W.N.Catford, E.A.Bennett, S.Dede, D.T.Doherty, S.Hallam, J.Hooker, C.Hunt, H.Jayatissa, A.Matta, M.Moukaddam, G.V.Rogachev, A.Saastamoinen, J.A.Tostevin, S.Upadhyayula, R.Wilkinson Decay properties of 22Ne + α resonances and their impact on s-process nucleosynthesis NUCLEAR REACTIONS 6Li(22Ne, d)26Mg, E=154 MeV; measured reaction products; deduced resonance parameters, n/γ branching ratio. Comparison with Monte Carlo calculations.
doi: 10.1016/j.physletb.2020.135256
2020UP01 Phys.Rev. C 101, 034604 (2020) S.Upadhyayula, G.V.Rogachev, J.Bishop, V.Z.Goldberg, J.Hooker, C.Hunt, H.Jayatissa, E.Koshchiy, E.Uberseder, A.Volya, B.T.Roeder, A.Saastamoinen Search for the high-spin members of the α:2n:α band in 10Be NUCLEAR REACTIONS 4He(6He, 6He), (6He, 6He'), E(cm)=4-9 MeV [secondary 6He beam from 2H(7Li, 6He), E=60 MeV]; measured reaction products, Eα, Iα, σ(E, θ), using silicon detector for α detection and the MARS spectrometer for secondary beam identification at the cyclotron facility of Texas A and M University. 10Be; deduced resonance parameters and upper limit of Γ(α)/Γ(α') for an yrast 6+ state at 13.5 MeV as the next member of the molecular α:2n:α rotational band in 10Be; no evidence found for a strong resonance at 13.5 MeV in the elastic and inelastic channels. GEANT4 Monte Carlo simulations. Comparison with theoretical predictions, and with previous experimental studies.
doi: 10.1103/PhysRevC.101.034604
2019AK03 Phys.Rev. C 99, 054601 (2019) O.A.Akindele, B.S.Alan, J.T.Burke, R.J.Casperson, R.O.Hughes, J.D.Koglin, K.Kolos, E.B.Norman, S.Ota, A.Saastamoinen Expansion of the surrogate method to measure the prompt fission neutron multiplicity for 241Pu NUCLEAR REACTIONS 242Pu(α, α'), (α, F), E=53.96 MeV; measured scattered α particles and other reaction products, neutrons, light charged particles p, d, t, 3He, α(fission fragment)- and αn-coin using the NeutronSTARS array for charged particle and neutron detection at the Cyclotron Institute of Texas A and M University. 241Pu(n, F), E<20 MeV; deduced average neutron multiplicity, and derived neutron multiplicity moments as a function of equivalent neutron energy using the surrogate method. Comparison with previous experimental values.
doi: 10.1103/PhysRevC.99.054601
2019BE23 Phys.Rev. C 100, 015503 (2019) M.Bencomo, J.C.Hardy, V.E.Iacob, H.I.Park, L.Chen, V.Horvat, N.Nica, B.T.Roeder, A.Saastamoinen, I.S.Towner Precise branching ratio measurement for the superallowed β+ decay of 26Si: Completion of a second mirror pair RADIOACTIVITY 26Si(β+), (EC)[from 1H(27Al, 2n), E=30 MeV/nucleon from the Texas A and M University K500 superconducting cyclotron, followed by analysis of reaction products by MARS system according to A/Q ratio]; measured β+ particles, Eγ, Iγ, β+γ-coin using plastic scintillator for β+ detection and HPGe detector for γ detection. 26Al; deduced levels, β++ϵ branching ratios, Gamow-Teller branches, superallowed (0+ to 0+) decay branch, logft, Ft. Comparison with sd shell-model calculations using USD, USD-A, and USD-B effective interactions. Discussed relevance to determination of up-down Vud quark-mixing element of the Cabibbo-Kobayashi-Maskawa matrix.
doi: 10.1103/PhysRevC.100.015503
2019HO14 Phys.Rev. C 100, 054618 (2019) J.Hooker, G.V.Rogachev, E.Koshchiy, S.Ahn, M.Barbui, V.Z.Goldberg, C.Hunt, H.Jayatissa, E.C.Pollacco, B.T.Roeder, A.Saastamoinen, S.Upadhyayula Structure of 9C through proton resonance scattering with the Texas Active Target detector NUCLEAR REACTIONS 1H(8B, p)9C*, E=60.8 MeV, [secondary 8B beam from 6Li(3He, n)8B, E=13.2 MeV/nucleon primary reaction, and using the Momentum Achromat Recoil Spectrometer (MARS) at the Cyclotron Institute of Texas A and M University]; measured charged products, 8B spectrum, Ep, (8Be)p-coin, angular distributions using TexAT time projection chamber (TPC) and CsI(Tl) scintillators. 9C; deduced levels, resonances, J, π, phase shifts, widths using R-matrix analysis. Comparison with previous experimental data, and with ab initio calculations in literature.
doi: 10.1103/PhysRevC.100.054618
2019NA10 Phys.Rev. C 99, 054331 (2019) F.Naqvi, A.Simon, M.Guttormsen, R.Schwengner, S.Frauendorf, C.S.Reingold, J.T.Burke, N.Cooper, R.O.Hughes, S.Ota, and A.Saastamoinen Nuclear level densities and γ-ray strength functions in samarium isotopes NUCLEAR REACTIONS 148,150Sm(p, d), E=28 MeV; measured deuteron spectra, Eγ, Iγ, and (particle)γ-coin using the Hyperion array with ΔE-E telescope and HPGe clover detector array at the Cyclotron Institute of Texas A and M University. 147,149Sm; deduced nuclear level densities (NLDs) and γ strength functions (γSF) using the Oslo method, total B(M1) strength, parameters for giant resonances and the upbend. Comparison with shell model calculations, and with previous experimental results. Systematics of γSF, nuclear level densities, total B(M1) strength, and the parameters for giant resonances, the upbend and scissors resonances in 145,147,149,151Sm.
doi: 10.1103/PhysRevC.99.054331
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
2018BU16 Phys.Rev. C 98, 064320 (2018) B.Bucher, H.Mach, A.Aprahamian, L.M.Robledo, G.S.Simpson, J.Rissanen, D.G.Ghita, B.Olaizola, W.Kurcewicz, J.Aysto, T.Eronen, L.M.Fraile, A.Jokinen, P.Karvonen, I.D.Moore, H.Penttila, M.Reponen, E.Ruchowska, A.Saastamoinen, M.K.Smith, C.Weber New insights into triaxiality and shape coexistence from odd-mass 109Rh RADIOACTIVITY 109Ru(β-)[from U(p, F), E=30 MeV]; measured Eγ, Iγ, γγ-coin, level half-lives using fast timing βγγ(t) technique at the IGISOL facility of University of Jyvaskyla. 109Rh; deduced levels, J, π, B(M1), B(E2). NUCLEAR STRUCTURE 109Rh; calculated potential energy surface (PES) in (β, γ) plane, proton single-particle energies as function of deformation parameters Q0 and γ, minimum energy E(β, γ) for the different blocked configurations using HFB method.
doi: 10.1103/PhysRevC.98.064320
2018CO12 Phys.Rev. C 98, 044618 (2018) N.Cooper, C.W.Beausang, P.Humby, A.Simon, J.T.Burke, R.O.Hughes, S.Ota, C.Reingold, A.Saastamoinen, E.Wilson Entry-level spin distributions and relative γ-neutron branching ratios of samarium isotopes populated by the (p, t) reaction NUCLEAR REACTIONS 150,152,154Sm(p, t), E=25 MeV; measured Eγ, Iγ, γ(θ), E(t), I(t), angular distribution of tritons, and tγ-coin using the Hyperion detector array consisting of STARS array of Si detectors for triton detection and 13 HPGe clovers for γ detection using enriched targets at the K150 cyclotron facility of Texas A and M university. 148,150,152Sm; deduced relative intensities of γ rays from low-lying levels, entry-level spin distributions, and relative average branching ratios for γ-rays above S(n). Comparison with calculated simulated γ spectra from natural-parity levels using DICEBOX and MCγ codes, and probability densities of entry level spins by modeling (p, t) reaction using PTCRUISER code.
doi: 10.1103/PhysRevC.98.044618
2018ES05 Phys.Rev.Lett. 121, 052501 (2018) J.E.Escher, J.T.Burke, R.O.Hughes, N.D.Scielzo, R.J.Casperson, S.Ota, H.I.Park, A.Saastamoinen, T.J.Ross Constraining Neutron Capture Cross Sections for Unstable Nuclei with Surrogate Reaction Data and Theory NUCLEAR REACTIONS 87Y(n, γ), E<10 MeV; analyzed available data; deduced σ using surrogate reaction data. Comparison with TENDL 2015 and ROSFOND 2010 libraries. 89Y, 92Zr(p, d), E*=6-12 MeV; calculated σ(E, θ), probability of observing specific γ-ray in coincidence with outgoing deuteron; compared with available data.
doi: 10.1103/PhysRevLett.121.052501
2018HO06 Phys.Rev. C 97, 054605 (2018) D.E.M.Hoff, G.Potel, K.W.Brown, R.J.Charity, C.D.Pruitt, L.G.Sobotka, T.B.Webb, B.Roeder, A.Saastamoinen Large longitudinal spin alignment generated in inelastic nuclear reactions NUCLEAR REACTIONS 9Be, 12C, 27Al(7Li, 7Li'), E=24.0 MeV/nucleon; measured breakup fragments of 7Li, excitation energy distributions, and efficiency-corrected angular correlations, differential σ(θ) at Texas A and M K-500 Cyclotron facility; deduced magnetic substate distribution, and presence of large longitudinal spin alignment in inelastically excited 7Li. Comparison with α+t DWBA cluster-model calculations.
doi: 10.1103/PhysRevC.97.054605
2018IA01 Phys.Rev. C 97, 035501 (2018) V.E.Iacob, J.C.Hardy, L.Chen, V.Horvat, M.Bencomo, N.Nica, H.I.Park, B.T.Roeder, A.Saastamoinen Precise half-life measurement of the superallowed emitter 30S RADIOACTIVITY 30S(β+), (EC)[from 1H(31P, 2n), E=30 MeV/nucleon]; 30P(β+), (EC)[from 30S decay]; measured β+ using 4π proportional gas counter, half-lives of 30S and 30P decays. Comparison with previous measurements. Relevance to determination of up-down element of the Cabibbo-Kobayashi-Maskawa quark-mixing matrix Vud for 0+ to 0+ superallowed β transition in the decay of 30S to 30P. NUCLEAR REACTIONS 1H(31P, 2n)27Si/29P/30S/31S, E=30 MeV/nucleon; measured yields of ions momentum achromat recoil spectrometer (MARS) spectrometer at Texas A and M University K500 superconducting cyclotron facility.
doi: 10.1103/PhysRevC.97.035501
2017HO10 Phys.Lett. B 769, 62 (2017) J.Hooker, G.V.Rogachev, V.Z.Goldberg, E.Koshchiy, B.T.Roeder, H.Jayatissa, C.Hunt, C.Magana, S.Upadhyayula, E.Uberseder, A.Saastamoinen Structure of 10N in 9C+p resonance scattering NUCLEAR REACTIONS 1H(9C, X)10N, E=23.4 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ, J, π, resonance parameters.
doi: 10.1016/j.physletb.2017.03.025
2017HO26 Phys.Rev.Lett. 119, 232501 (2017) D.E.M.Hoff, R.J.Charity, K.W.Brown, C.D.Pruitt, L.G.Sobotka, T.B.Webb, G.Potel, B.Roeder, A.Saastamoinen Large Longitudinal Spin Alignment of Excited Projectiles in Intermediate Energy Inelastic Scattering NUCLEAR REACTIONS 9Be, C, 27Al(7Li, X), E=24 MeV/nucleon; measured projectile sequential breakup products. 7Li; deduced for peripheral events that do not excite the target large spin alignment of the excited projectiles longitudinal to the beam axis.
doi: 10.1103/PhysRevLett.119.232501
2017MU04 Phys.Rev. C 95, 015805 (2017) J.M.Munson, E.B.Norman, J.T.Burke, R.J.Casperson, L.W.Phair, E.McCleskey, M.McCleskey, D.Lee, R.O.Hughes, S.Ota, A.Czeszumska, P.A.Chodash, A.J.Saastamoinen, R.A.E.Austin, A.E.Spiridon, M.Dag, R.Chyzh, M.S.Basunia, J.J.Ressler, T.J.Ross Decay branching ratios of excited 24Mg NUCLEAR REACTIONS 24Mg(α, α'), E=40 MeV; measured decay products identified by outgoing α particles, protons and γ rays from the resulting 20Ne, 23Na, and 23Mg daughters, (particle)(particle)-coin, αγ-coin using the STARLiTeR detector array at Texas A and M K150 cyclotron facility; deduced branching ratios for α-, proton- and neutron-emitting channels from the decay of unbound states in 24Mg. Possible surrogate reaction for 12C(12C, α)20Ne, 12C(12C, p)23Na, 12C(12C, n)23Mg reactions of astrophysical interest. 20Ne, 23Na, 23Mg; deduced levels populated by the decay of excited states of 24Mg.
doi: 10.1103/PhysRevC.95.015805
2017UR03 Phys.Rev. C 96, 044333 (2017) W.Urban, M.Czerwinski, J.Kurpeta, T.Rzaca-Urban, J.Wisniewski, T.Materna, L.W.Iskra, A.G.Smith, I.Ahmad, A.Blanc, H.Faust, U.Koster, M.Jentschel, P.Mutti, T.Soldner, G.S.Simpson, J.A.Pinston, G.de France, C.A.Ur, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, J.Rissanen, A.Saastamoinen, J.Szerypo, C.Weber, J.Aysto Shape coexistence in the odd-odd nucleus 98Y: The role of the g9/2 neutron extruder NUCLEAR REACTIONS 235U(n, F), E=cold neutrons from PF1B facility at ILL Grenoble; measured Eγ, Iγ, γγ-coin, delayed γγ-coin, half-lives of several isomers in 98Y using the EXILL array at Grenoble. 98Y; deduced levels, isomers, J, π, bands, configurations, deformed and spherical isomers. RADIOACTIVITY 248Cm, 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ), γγ-coin with γ rays from fission partner 147La in 248Cm SF decay using Eurogam2 array at Grenoble and Gammasphere array at Argonne. 98Y; deduced levels, J, π, multipolarities. 98Sr, 98,98mY(β-)[from 235U(n, F), E=cold neutrons and using Lohengrin fission-fragment separator]; measured Eγ, Iγ, γγ-coin, γγ(θ), γγ(linear pol), half-lives of decays of 98Sr, 98Y and 98Y isomer, excitation energy of the 2.36-s isomer in 98Y by using JYFLTRAP Penning trap at Jyvaskyla accelerator facility, . 98Y, 98Zr; deduced levels, J, π, multipolarities, mixing ratios, β feedings, logft, configurations. Comparison of negative-parity levels in 98Y with Interacting Boson Fermion Fermion Model (IBFFM) and Quasi-Particle Rotor Model (QPRM) calculations.
doi: 10.1103/PhysRevC.96.044333
2016AG03 Nucl.Instrum.Methods Phys.Res. A807, 69 (2016) J.Agramunt, J.L.Tain, M.B.Gomez Hornillos, A.R.Garcia, F.Albiol, A.Algora, R.Caballero-Folch, F.Calvino, D.Cano-Ott, G.Cortes, C.Domingo-Pardo, T.Eronen, W.Gelletly, D.Gorelov, V.Gorlychev, H.Hakala, A.Jokinen, M.D.Jordan, A.Kankainen, V.Kolhinen, L.Kucuk, T.Martinez, P.J.R.Mason, I.Moore, H.Penttila, Zs.Podolyak, C.Pretel, M.Reponen, A.Riego, J.Rissanen, B.Rubio, A.Saastamoinen, A.Tarifeno-Saldivia, E.Valencia Characterization of a neutron-beta counting system with beta-delayed neutron emitters RADIOACTIVITY 94,95Rb, 88Br, 137I(β-n); measured decay products, Eβ, Iβ, En, In; deduced neutron emission probabilities, β-spectra. Comparison with Monte Carlo calculations.
doi: 10.1016/j.nima.2015.10.082
2016HU02 Phys.Rev. C 93, 024315 (2016) R.O.Hughes, J.T.Burke, R.J.Casperson, J.E.Escher, S.Ota, J.J.Ressler, N.D.Scielzo, R.A.E.Austin, B.Abromeit, N.J.Foley, E.McCleskey, M.McCleskey, H.I.Park, T.J.Ross, A.Saastamoinen Investigation of 88Y via (p, dγ) reactions NUCLEAR REACTIONS 89Y(p, d), E=28.5 MeV; measured E(d), I(d), Eγ, Iγ, dγ-, dγγ-coin, dγ(t) using STARLiTeR array of Si detectors for deuteron detection and five HPGe clover detectors for γ rays at Texas A and M Cyclotron Institute. 88Y; deduced levels, J, π, level population intensities. Discussed effect of γ-branching ratios in 88Y on determination of 87Y(n, γ) cross section via surrogate method.
doi: 10.1103/PhysRevC.93.024315
2016HU22 Phys.Rev. C 94, 064314 (2016) P.Humby, A.Simon, C.W.Beausang, J.M.Allmond, J.T.Burke, R.J.Casperson, R.Chyzh, M.Dag, K.Gell, R.O.Hughes, J.Koglin, E.McCleskey, M.McCleskey, S.Ota, T.J.Ross, A.Saastamoinen, T.Tarlow, G.Vyas Investigation of discrete states and quasidiscrete structures observed in 150Sm and 152Sm using the (p, tγ) reaction NUCLEAR REACTIONS 152,154Sm(p, t), E=25 MeV; measured triton spectra, Eγ, Iγ, (triton)γ-, (triton)γγ-coin, σ(θ), angular distribution of peak-like structure (PLS) using the STARLiTeR array at Texas A and M cyclotron facility. Enriched targets. 150,152Sm; deduced levels, J, π, L-transfers. DWBA analysis of σ(θ) data. Comparison with evaluated data taken from the ENSDF database.
doi: 10.1103/PhysRevC.94.064314
2016MC09 Phys.Rev. C 94, 065806 (2016) E.McCleskey, A.Banu, M.McCleskey, T.Davinson, D.T.Doherty, G.Lotay, B.T.Roeder, A.Saastamoinen, A.Spiridon, L.Trache, J.P.Wallace, P.J.Woods, R.E.Tribble Simultaneous measurement of β delayed proton and γ decay of 27P RADIOACTIVITY 27P(β+), (EC), (β+p)[from 1H(28Si, X), E=40 MeV/nucleon]; measured reaction products of 27P, 25Si and 24Al, Eγ, Iγ, Ep, Ip, βp-, βγ-, and pβγ-coin using Momentum Achromat Recoil Spectrometer (MARS) at Texas A and M cyclotron facility. 27Si; deduced levels, J, π, IAS, β++ϵ feedings, logft. 26Al; deduced levels.
doi: 10.1103/PhysRevC.94.065806
2016PE05 Eur.Phys.J. A 52, 104 (2016) H.Penttila, D.Gorelov, V.-V.Elomaa, T.Eronen, U.Hager, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, I.D.Moore, J.Parkkonen, K.Perajarvi, I.Pohjalainen, S.Rahaman, S.Rinta-Antila, J.Rissanen, V.A.Rubchenya, A.Saastamoinen, V.Simutkin, T.Sonoda, C.Weber, A.Voss, J.Aysto Independent isotopic yields in 25 MeV and 50 MeV proton-induced fission of natU NUCLEAR REACTIONS U(p, F), E=25, 50 MeV; measured fission products using JYFLTRAP facility; deduced isotope yields from Zn to La. Compared with other measurements.
doi: 10.1140/epja/i2016-16104-4
2016SA60 Eur.Phys.J.Plus 131, 272 (2016) A.Saastamoinen, A.Kankainen, L.Trache Beta-decay of 31Cl: an indirect probe of the 30P(p, γ)31S reaction. Present status and future perspectives RADIOACTIVITY 31Cl(β+), (p)[from 1H(32S, 31Cl)2n, E=40 MeV/nucleon in-flight production]; measured 31Cl implanted into detector setup consisting of MSL W1 type DSSSD, 1mm thick Si-pad and HPGe (TAMU) or MSL BB2 type DSSSD as the first detector Eγ, Iγ, Eβ, γγ-coin, βγ-coin or another configuration at NSCL; deduced Ep from 31Cl-decay, level energy, J, π, γ transitions above Sp. Compared with other results.
doi: 10.1140/epjp/i2016-16272-6
2016SI07 Phys.Rev. C 93, 034303 (2016) A.Simon, M.Guttormsen, A.C.Larsen, C.W.Beausang, P.Humby, J.T.Burke, R.J.Casperson, R.O.Hughes, T.J.Ross, J.M.Allmond, R.Chyzh, M.Dag, J.Koglin, E.McCleskey, M.McCleskey, S.Ota, A.Saastamoinen First observation of low-energy γ-ray enhancement in the rare-earth region NUCLEAR REACTIONS 152,154Sm(p, dγ), E=25 MeV; measured reaction products, Eγ, Iγ, (particle)γ-coin, γ(θ) using STARLiTeR setup for charged-particles, and Ge clover detectors with Compton suppressors for γ rays at K-150 cyclotron at Texas A and M; deduced level density (LD) and γ-ray strength function (γSF) using OSLO method, multipolarity, enhanced low-energy γ-ray strength for rare-earth nuclei, coexistence with the scissors resonance. Comparison with Hauser-Feshbach calculations. Calculated ratios of Maxwellian-averaged (n, γ) reaction rates at T9=0.15 and 1.5 for A=145-202 Sm isotopes.
doi: 10.1103/PhysRevC.93.034303
2015BU15 Phys.Rev. C 92, 064312 (2015) B.Bucher, H.Mach, A.Aprahamian, G.S.Simpson, J.Rissanen, D.G.Ghita, B.Olaizola, W.Kurcewicz, J.Aysto, I.Bentley, T.Eronen, L.M.Fraile, A.Jokinen, P.Karvonen, I.D.Moore, H.Penttila, M.Reponen, E.Ruchowska, A.Saastamoinen, M.K.Smith, C.Weber New lifetime measurements in 109Pd and the onset of deformation at N=60 RADIOACTIVITY 109Rh(β-)[from U(p, F), E=30 MeV at IGISOL facility of University of Jyvaskyla]; measured Eγ, Iγ, γγ-, βγγ-coin, level half-lives by fast timing βγγ(t) technique. 109Pd; deduced levels, J, π, configuration, B(M1), B(E2), B(E1); discussed strong pn interaction between πg9/2 and νg7/2 valence nucleons. Systematics of band structures, (d, p) and (d, t) spectroscopic strengths in 101,103,105,107,109,111Pd. Systematics of 7/2+ and 5/2+ states in odd-A Pd, Rh and Ag isotopes.
doi: 10.1103/PhysRevC.92.064312
2015GO14 Bull.Rus.Acad.Sci.Phys. 79, 869 (2015); Izv.Akad.Nauk RAS, Ser.Fiz 79, 963 (2015) D.Gorelov, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, V.Kolhinen, M.Lantz, A.Mattera, I.Moore, H.Penttila, I.Pohjalainen, S.Pomp, M.Reponen, S.Rinta-Antila, V.Rubchenya, A.Saastamoinen, V.Simutkin, A.Solders, V.Sonnenschein, J.Aysto Measuring independent yields of fission products using a penning trap NUCLEAR REACTIONS 232Th(p, F), E=25 MeV; measured fission products; deduced σ, yields. Comparison with FIPRODY model.
doi: 10.3103/S1062873815070114
2015HU02 Phys.Rev. C 91, 024322 (2015) P.Humby, A.Simon, C.W.Beausang, T.J.Ross, R.O.Hughes, J.T.Burke, R.J.Casperson, J.Koglin, S.Ota, J.M.Allmond, M.McCleskey, E.McCleskey, A.Saastamoinen, R.Chyzh, M.Dag, K.Gell, T.Tarlow, G.Vyas Improved measurement of the half-life of the Jπ = 8- nuclear isomer 152m2Eu NUCLEAR REACTIONS 154Sm(p, 3n)152mEu, E=25 MeV; measured Eγ, Iγ, delayed γ, half-lives of 0- and 8- isomers in 152Eu by γ(t) using STARS array for particle detection and LiTer array for γ detection at the Texas A and M, K-150 cyclotron facility. Comparison with earlier experimental results. RADIOACTIVITY 152Eu(β-), (EC)[from 154Sm(p, 3n), E=25 MeV]; measured Eγ, Iγ, half-life of the 0- isomer in 152Eu. Comparison with earlier experimental results.
doi: 10.1103/PhysRevC.91.024322
2015OT02 Phys.Rev. C 92, 054603 (2015) S.Ota, J.T.Burke, R.J.Casperson, J.E.Escher, R.O.Hughes, J.J.Ressler, N.D.Scielzo, I.J.Thompson, R.A.E.Austin, B.Abromeit, N.J.Foley, E.McCleskey, M.McCleskey, H.I.Park, A.Saastamoinen, T.J.Ross Spin differences in the 90Zr compound nucleus induced by (p, p'), (p, d), and (p, t) surrogate reactions NUCLEAR REACTIONS 90Zr(p, p'), (p, np), 91Zr(p, d), 92Zr(p, t), E=28.56 MeV; measured light-ion particle spectra, angular distributions, Eγ, Iγ, (particle)γ-coin, using STARLiTeR detector system at Texas A and M cyclotron facility; deduced γ-decay probabilities as functions of 90Zr excitation energy, angular momentum, and particle scattering angle. Enriched targets. 89,90Zr; deduced levels, J, π. 89Zr(n, γ); discussed relevance to determination of σ by surrogate reaction approach.
doi: 10.1103/PhysRevC.92.054603
2014AG12 Nucl.Data Sheets 120, 74 (2014) J.Agramunt, A.R.Garcia, A.Algora, J.Aysto, R.Caballero-Folch, F.Calvino, D.Cano-Ott, G.Cortes, C.Domingo-Pardo, T.Eronen, W.Gelletly, M.B.Gomez Hornillos, J.Hakala, A.Jokinen, D.Jordan, A.Kankainen, V.Kolkinen, T.Martinez, P.J.Mason, I.Moore, H.Penttila, Zs.Podolyak, M.Reponen, A.Riego, J.Rissanen, B.Rubio, A.Saastamoinen, J.L.Tain, E.Valencia New Beta-delayed Neutron Measurements in the Light-mass Fission Group RADIOACTIVITY 91Br, 85,86As, 85Ge(β-), (β-n); measured decay products, Eγ, Iγ, Eβ, Ib, En, In.; deduced β-delayed neutron emission probabilities. Comparison with available data.
doi: 10.1016/j.nds.2014.07.010
2014AL01 Hyperfine Interactions 223, 245 (2014) A.Algora, D.Jordan, J.L.Tain, B.Rubio, J.Agramunt, L.Caballero, E.Nacher, A.B.Perez-Cerdan, F.Molina, E.Estevez, E.Valencia, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, T.Eronen, J.Rissanen, A.Saastamoinen, I.D.Moore, H.Penttila, V.S.Kolhinen, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi Decay heat studies for nuclear energy
doi: 10.1007/s10751-012-0623-6
2014CA31 Phys.Rev. C 90, 034601 (2014) R.J.Casperson, J.T.Burke, N.D.Scielzo, J.E.Escher, E.McCleskey, M.McCleskey, A.Saastamoinen, A.Spiridon, A.Ratkiewicz, A.Blanc, M.Kurokawa, R.G.Pizzone Measurement of the 240Am (n, f) cross section using the surrogate-ratio method NUCLEAR REACTIONS 243Am, 238U(p, F)3H, 243Am, 238U(p, p'), (p, d), E=38.4 MeV; measured particle and fission fragment spectra, (particle)(fission fragment)-coin using STARLiTeR array of Si detectors at Texas A and M facility. 235U, 240Am(n, F), E=200 keV-14 MeV; deduced σ(E) using results for surrogate reactions 243Am, 238U(p, F)3H. Comparison with previous experimental results. Comparison with several evaluated libraries shows disagreement and a need for re-evaluation.
doi: 10.1103/PhysRevC.90.034601
2014GR11 Nucl.Data Sheets 119, 237 (2014) E.Gromova, V.Jakovlev, J.Aaltonen, K.Helariutta, S.Salminen-Paatero, J.Bergman, S.-J.Heselius, H.Penttila, J.Rissanen, A.Saastamoinen Study of Proton and 3He Induced Reactions on 235U at Low Energies NUCLEAR REACTIONS 235U(p, x), E=6.5-16.1 MeV;235U(3He, x), E=20.4-42 MeV; measured off-line (after cooling) Eγ, Iγ, Eα, Iα; deduced σ; calculated thick target yields for produced nuclei.
doi: 10.1016/j.nds.2014.08.065
2014KA01 Hyperfine Interactions 223, 121 (2014) A.Kankainen, A.Honkanen, K.Perajarvi, A.Saastamoinen Decays of TZ = -3/2 nuclei 23Al, 31Cl, and 41Ti RADIOACTIVITY 23Al, 31Cl, 41Ti(β+); measured decay products; Eβ, Iβ, Eγ, Iγ; deduced Gamow-Teller strengths. Comparison with available data.
doi: 10.1007/s10751-012-0625-4
2014KA22 Phys.Rev. C 89, 051302 (2014) A.Kankainen, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, V.S.Kolhinen, M.Reponen, J.Rissanen, A.Saastamoinen, V.Sonnenschein, J.Aysto Coulomb displacement energies as a probe for nucleon pairing in the f7/2 shell ATOMIC MASSES 45V, 49Mn; measured cyclotron frequency ratios, time-of-flight spectrum using JYFLTRAP double Penning trap mass spectrometer; deduced masses and Q(EC) values. 45V and 49Mn ions produced in 46Ti, 50Cr(p, 2n), E=40 MeV at IGISOL-JYFL facility Comparison with available data and AME-2012. Discussed pairing effect in the f7/2 shell nuclei. RADIOACTIVITY 45V, 49Mn(β+), (EC); deduced Q values from measurement of masses of 45V and 49Mn by JYFLTRAP.
doi: 10.1103/PhysRevC.89.051302
2014KO17 Phys.Rev. C 89, 064315 (2014) G.T.Koldste, B.Blank, M.J.G.Borge, J.A.Briz, M.Carmona-Gallardo, L.M.Fraile, H.O.U.Fynbo, J.Giovinazzo, B.D.Grann, J.G.Johansen, A.Jokinen, B.Jonson, T.Kurturkian-Nieto, J.H.Kusk, T.Nilsson, A.Perea, V.Pesudo, E.Picado, K.Riisager, A.Saastamoinen, O.Tengblad, J.-C.Thomas, J.Van de Walle Multiparticle emission in the decay of 31Ar RADIOACTIVITY 31Ar(β+p), (β+2p), (β+3p); 33Ar(β+), (β+p); measured Eγ, Iγ, E(p), I(p), γγ-, pγ-coin, pp(θ), half-life of 31Ar ground state at ISOLDE-CERN facility; deduced branching ratios for different decay modes, Q values, Fermi strength in β-decay. 28Si, 29P, 30S, 31,33Cl; deduced levels, J, π. measured Eγ, Iγ, decays of IAR in 31Cl and 33Cl. Comparison with previous experimental results.
doi: 10.1103/PhysRevC.89.064315
2014KO34 Phys.Lett. B 737, 383 (2014) G.T.Koldste, B.Blank, M.J.G.Borge, J.A.Briz, M.Carmona-Gallardo, L.M.Fraile, H.O.U.Fynbo, J.Giovinazzo, J.G.Johansen, A.Jokinen, B.Jonson, T.Kurturkian-Nieto, T.Nilsson, A.Perea, V.Pesudo, E.Picado, K.Riisager, A.Saastamoinen, O.Tengblad, J.-C.Thomas, J.Van de Walle Sizeable beta-strength in 31Ar (β 3p) decay RADIOACTIVITY 31Ar(β+3p), (β+2p), (β+p); measured decay products, Eβ, Iβ, Eγ, Iγ, Ep, Ip; deduced decay spectra, Gamow-Teller strength B(GT). Comparison with available data.
doi: 10.1016/j.physletb.2014.09.015
2014KU10 Phys.Rev. C 89, 064305 (2014) G.J.Kumbartzki, N.Benczer-Koller, S.Burcher, A.Ratkiewicz, S.L.Rice, Y.Y.Sharon, L.Zamick, K.-H.Speidel, D.A.Torres, K.Sieja, M.McCleskey, A.Cudd, M.Henry, A.Saastamoinen, M.Slater, A.Spiridon, S.Yu.Torilov, V.I.Zherebchevsky, G.Gurdal, S.J.Q.Robinson, S.D.Pain, J.T.Burke Transition from collectivity to single-particle degrees of freedom from magnetic moment measurements on 8238Sr44 and 9038Sr52 NUCLEAR MOMENTS 82,90Sr, 78,86Kr; measured precession angles, g factors of first 2+ and 4+ states, second 2+ state in 78Kr by transient-field technique in Coulomb excitation and α-pickup reaction at K500-TAMU cyclotron facility. Comparison with shell-model calculations and previous experimental results. Systematics of g factors of first 2+ states in even-even nuclei with Z=30-48, N=30-70. Discussed proton subshell closures at Z=38 and Z=40. NUCLEAR REACTIONS 12C(78Kr, 8Be), (78Kr, 78Kr'), E=249.6 MeV; 12C(86Kr, 8Be), (86Kr, 86Kr'), E=258.0, 266.6, 275.2 MeV; measured Eγ, Iγ, Eα, Iα, particle spectra, αγ-, (particle)γ-coin, angular correlations, precession angles, particle yields at Texas A-M cyclotron facility. 78,86Kr, 82,90Sr; deduced levels, g factors. Comparison with shell-model calculations and previous experimental results.
doi: 10.1103/PhysRevC.89.064305
2014PE01 Hyperfine Interactions 223, 239 (2014) K.Perajarvi, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, H.Kettunen, V.Kolhinen, M.Laitinen, I.D.Moore, H.Penttila, J.Rissanen, A.Saastamoinen, H.Toivonen, J.Turunen, J.Aysto Production of pure 133mXe for CTBTO
doi: 10.1007/s10751-012-0626-3
2013JO02 Phys.Rev. C 87, 044318 (2013) D.Jordan, A.Algora, J.L.Tain, B.Rubio, J.Agramunt, A.B.Perez-Cerdan, F.Molina, L.Caballero, E.Nacher, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, I.D.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, U.Hager, S.Rinta-Antila, T.Sonoda, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi, A.Petrovici, K.W.Schmid, A.Faessler Total absorption study of the β decay of 102, 104, 105Tc RADIOACTIVITY 102,104,105Tc(β-)[from U(p, F), E=30, 50 MeV followed by mass separation]; measured Eγ, Iγ using the Total Absorption Gamma Spectrometer (TAGS) and JYFLTRAP Penning trap at IGISOL, Jyvaskyla facility; deduced β feedings to levels in 102,104,105Ru, β-strength distributions, Gamow-Teller strengths, average β and γ energies, effects on decay heat calculations. Comparison of deduced β feedings with those from high-resolution γ-ray measurements. Comparison of Gamow-Teller strengths with VAMPIR model calculations. Relevance to decay heat calculations in nuclear reactors. NUCLEAR REACTIONS U(p, F)102Mo/102Tc/102Ru/104Tc/105Nb/ 105Mo/105Tc/105Ru, E=30, 50 MeV; measured yields using JYFLRTRAP Penning trap at IGISOL, Jyvaskyla facility.
doi: 10.1103/PhysRevC.87.044318
2013KA08 Phys.Rev. C 87, 024307 (2013) A.Kankainen, J.Hakala, T.Eronen, D.Gorelov, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, V.Sonnenschein, J.Aysto Isomeric states close to doubly magic 132Sn studied with the double Penning trap JYFLTRAP ATOMIC MASSES 121,123,125Cd, 133Te, 129,131In, 130,131Sn, 133Te, 134Sb [from U, 232Th(p, F), E=25 MeV]; measured time-of-flight, cyclotron frequency ratio using the double Penning trap mass spectrometer JYFLTRAP; deduced mass excess, and level energies of ground states and isomers, isomeric to ground-state intensity ratios. Systematics of 11/2- states in odd-N, N=71-81 Cd, Sn, Te, Xe nuclei, and of the lowest 1/2- and 3/2- states in even-N, N=60-84 In isotopes. Comparison with previous studies, and evaluated data. Relevance for the r process.
doi: 10.1103/PhysRevC.87.024307
2013KO13 Phys.Rev. C 87, 055808 (2013) G.T.Koldste, B.Blank, M.J.G.Borge, J.A.Briz, M.Carmona-Gallardo, L.M.Fraile, H.O.U.Fynbo, J.Giovinazzo, J.G.Johansen, A.Jokinen, B.Jonson, T.Kurturkian-Nieto, J.H.Kusk, T.Nilsson, A.Perea, V.Pesudo, E.Picado, K.Riisager, A.Saastamoinen, O.Tengblad, J.-C.Thomas, J.Van de Walle Relative proton and γ widths of astrophysically important states in 30S studied in the β-delayed decay of 31Ar RADIOACTIVITY 31Ar(β+), (β+p), (β+2p)[60 keV 31Ar beam from Ca(p, X), pulsed beam]; measured Eγ, Iγ, E(p), pγ-coin at ISOLDE-CERN facility. 30S; deduced levels, astrophysically relevant resonances in, γ-branching ratios, Γγ/Γp ratios. 29P; deduced levels. Comparison with previous experimental data.
doi: 10.1103/PhysRevC.87.055808
2013LA22 Eur.Phys.J. A 49, 79 (2013) K.L.Laursen, O.S.Kirsebom, H.O.U.Fynbo, A.Jokinen, M.Madurga, K.Riisager, A.Saastamoinen, O.Tengblad, J.Aysto High-statistics measurement of the β-delayed spectrum of 20Na RADIOACTIVITY 20Na(β+α); measured β-delayed α decay Eα, Iα, (16O)α-coin; deduced low-lying α transitions, branching ratios; calculated levels energy, width using R-matrix.
doi: 10.1140/epja/i2013-13079-6
2013PE01 Appl.Radiat.Isot. 71, 34 (2013) K.Perajarvi, T.Eronen, A.Cagniant, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, H.Kettunen, V.S.Kolhinen, M.Laitinen, I.D.Moore, H.Penttila, J.Rissanen, A.Saastamoinen, H.Toivonen, J.Turunen, J.Aysto Production of pure samples of 131mXe and 135Xe NUCLEAR REACTIONS Th(P, X)131Xe/135Xe, E=25 MeV; measured reaction products, dipole frequency, E(ce); deduced Xe implantation rates. Penning trap-based production of the Comprehensive Nuclear-Test-Ban Treaty Organization isotopes.
doi: 10.1016/j.apradiso.2012.09.007
2013WR01 Phys.Rev. C 87, 031303 (2013) C.Wrede, S.K.L.Sjue, A.Garcia, H.E.Swanson, I.Ahmad, A.Algora, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, M.Reponen, J.Rissanen, A.Saastamoinen, J.Aysto Electron capture on 116In and implications for nuclear structure related to double-β decay RADIOACTIVITY 116In(EC)[from 115In(d, p), E=7.6 MeV]; measured γ, β, x-ray spectra, β(x ray)-coin using JYFLTRAP at IGISOL facility in Jyvaskyla; deduced EC decay branch, B(GT). Implications for 2νββ and 0νββ decay modes of 116Cd.
doi: 10.1103/PhysRevC.87.031303
2012BA54 Eur.Phys.J. A 48, 155 (2012) A.Bacquias, T.Kurtukian-Nieto, P.Ascher, L.Audirac, J.Aysto, B.Blank, V.-V.Elomaa, T.Eronen, J.Giovinazzo, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, V.S.Kolhinen, I.D.Moore, S.Rahaman, M.Reponen, J.Rissanen, A.Saastamoinen, J.Souin Precision half-life determination of a mirror β transition: The decay of 31S RADIOACTIVITY 31S(β+), (EC)[from 31P(p, n), E=19 MEV]; measured half-life. IGISOL method for source production and JYFLTRAP Penning trap.
doi: 10.1140/epja/i2012-12155-9
2012ER05 Eur.Phys.J. A 48, 46 (2012) T.Eronen, V.S.Kolhinen, V.-V.Elomaa, D.Gorelov, U.Hager, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, S.Kopecky, I.D.Moore, H.Penttila, S.Rahaman, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, J.Szerypo, C.Weber, J.Aysto JYFLTRAP: a Penning trap for precision mass spectroscopy and isobaric purification
doi: 10.1140/epja/i2012-12046-1
2012HA25 Phys.Rev.Lett. 109, 032501 (2012) J.Hakala, J.Dobaczewski, D.Gorelov, T.Eronen, A.Jokinen, A.Kankainen, V.S.Kolhinen, M.Kortelainen, I.D.Moore, H.Penttila, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, V.Sonnenschein, J.Aysto Precision Mass Measurements beyond 132Sn: Anomalous Behavior of Odd-Even Staggering of Binding Energies ATOMIC MASSES 121,122,123,124,125,126,127,128Cd, 129,131In, 130,131,132,133,134,135Sn, 131,132,133,134,135,135Sb, 132,133,134,135,136,137,138,139,140Te; measured cyclotron frequency ratios; deduced masses. JYFLTRAP Penning trap, comparison with available data.
doi: 10.1103/PhysRevLett.109.032501
2012KA12 Eur.Phys.J. A 48, 49 (2012) A.Kankainen, Yu.N.Novikov, M.Oinonen, L.Batist, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, P.Karvonen, M.Reponen, J.Rissanen, A.Saastamoinen, G.Vorobjev, C.Weber, J.Aysto Isomer and decay studies for the rp process at IGISOL
doi: 10.1140/epja/i2012-12049-x
2012KA13 Eur.Phys.J. A 48, 47 (2012) A.Kankainen, V.S.Kolhinen, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Saastamoinen, J.Aysto Penning-trap mass measurements on 92, 94-98, 100Mo with JYFLTRAP ATOMIC MASSES 92,94,95,96,97,98,100Mo; measured mass excess using JYFLTRAP Penning trap mass spectrometer with 85Rb as a reference. Compared with AME03. 80,81,82,84Y, 83,84,85,86,87,88Zr, 85,86,87,88Nb, 96,98Mo, 91Tc, 91Ru, 94,95,96,99Pd, 101,102,103,104,105Cd, 102In; re-evaluated mass excess using Mo isotopes as references. Compared with old data.
doi: 10.1140/epja/i2012-12047-0
2012KU28 Phys.Rev. C 86, 044306 (2012) J.Kurpeta, W.Urban, A.Plochocki, J.Rissanen, J.A.Pinston, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, H.Penttila, A.Saastamoinen, C.Weber, J.Aysto Low-spin excitations in the 109Tc nucleus RADIOACTIVITY 109Mo(β-)[from 238U(d, F), E=25 MeV]; measured Eγ, Iγ, βγ-coin, x rays, half-life, K-shell and total conversion coefficients using IGISOL + JYFLTRAP facilities at Jyvaskyla. 109Tc; deduced levels, J, π, Iβ, logft. 109Mo; deduced J, π of ground state. 109Mo, 109Tc(β-); deduced ground state β feedings. decay, and with quasiparticle-rotor model calculations.
doi: 10.1103/PhysRevC.86.044306
2012PE06 Eur.Phys.J. A 48, 43 (2012) H.Penttila, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, S.Rahaman, S.Rinta-Antila, J.Rissanen, V.Rubchenya, A.Saastamoinen, C.Weber, J.Aysto Fission yield studies at the IGISOL facility
doi: 10.1140/epja/i2012-12043-4
2012RI05 Phys.Rev. C 86, 034337 (2012) J.Rissanen, J.Kurpeta, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, H.Penttila, A.Plochocki, A.Saastamoinen, W.Urban, C.Weber, J.Aysto Structure of 115Ag studied by β- decays of 115Pd and 115Pdm RADIOACTIVITY 115Pd, 115mPd(β-)[from 115Ru-115Rh-115Pd decay chain, 115Ru formed in U(p, X), E=25 MeV]; measured Eγ, Iγ, Eβ, βγ-, βγγ-coin using IGISOL and JYFLTRAP facilities in Jyvaskyla. 115Ag; deduced levels, J, π, multipolarity, Iβ, logft, Nilsson configuration, β strength distribution. Systematics of negative and positive parity Nilsson states in 109,111,113,115,117Ag. 115Pd; discussed spin and parity of ground state and isomer. Comparison with level scheme of 111Ag.
doi: 10.1103/PhysRevC.86.034337
2012RO01 J.Phys.(London) G39, 015101 (2012) C.Rodriguez Triguero, A.M.Bruce, T.Eronen, I.D.Moore, M.Bowry, A.M.D.Bacelar, A.Y.Deo, V.-V.Elomaa, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, V.S.Kolhinen, J.Kurpeta, T.Malkiewicz, P.J.R.Mason, H.Penttila, M.Reponen, S.Rinta-Antila, J.Rissanen, A.Saastamoinen, G.S.Simpson, J.Aysto Trap-assisted separation of nuclear states for gamma-ray spectroscopy: the example of 100Nb RADIOACTIVITY 100Nb(β-); measured Eγ, Iγ, β-γ-coin.; deduced energy levels, J, π for ground and isomeric state transitions. JYFLTRAP installation.
doi: 10.1088/0954-3899/39/1/015101
2012RO10 Phys.Rev.Lett. 108, 162502 (2012) T.Roger, J.Buscher, B.Bastin, O.S.Kirsebom, R.Raabe, M.Alcorta, J.Aysto, M.J.G.Borge, M.Carmona-Gallardo, T.E.Cocolios, J.Cruz, P.Dendooven, L.M.Fraile, H.O.U.Fynbo, D.Galaviz, L.R.Gasques, G.S.Giri, M.Huyse, S.Hyldegaard, K.Jungmann, W.L.Kruithof, M.Lantz, A.Perea, K.Riisager, A.Saastamoinen, B.Santra, P.D.Shidling, M.Sohani, A.J.Sorensen, O.Tengblad, E.Traykov, D.J.van der Hoek, P.Van Duppen, O.O.Versolato, H.W.Wilschut Precise Determination of the Unperturbed 8B Neutrino Spectrum RADIOACTIVITY 8B(β+), 8Be(α) [from 12C(12C, X)8B, E=55 MeV/nucleon]; measured decay products, Eα, Iα, Eβ, Iβ; deduced final state distribution in 8Be, J, π, neutrino spectrum. Comparison with available data, R-matrix fits.
doi: 10.1103/PhysRevLett.108.162502
2012TR08 J.Phys.:Conf.Ser. 337, 012058 (2012) L.Trache, A.Banu, J.C.Hardy, V.E.Iacob, M.McCleskey, B.T.Roeder, E.Simmons, A.Spiridon, R.E.Tribble, A.Saastamoinen, A.Jokinen, J.Aysto, T.Davinson, G.Lotay, P.J.Woods, E.Pollacco Decay spectroscopy for nuclear astrophysics: β- and β-delayed proton decay RADIOACTIVITY 23Al, 27P, 31Cl(EC), (β+p) [from 1H(24Mg, X), E=48 MeV/nucleon; 1H(28Si, X), (32S, X), E=40 MeV/nucleon]; measured β-delayed Ep, Ip using DSSSD (double-sided strip Si detector), Iβ using Si detector, pβ-coin, Eγ, Iγ using HPGe, βγ-coin. 23Al deduced mass excess, partial decay scheme, levels, J, π, resonance strength, proton branching, isomeric decay, T1/2, IAS, log ft. Only the 23Al results presented.
doi: 10.1088/1742-6596/337/1/012058
2011AL21 J.Korean Phys.Soc. 59, 1479s (2011) A.Algora, D.Jordan, J.L.Tain, B.Rubio, J.Agramunt, L.Caballero, E.Nacher, A.B.Perez-Cerdan, F.Molina, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, S.Rinta-Antila, I.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, U.Hager, T.Sonoda, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, K.Burkard, W.Huller, L.Batist, W.Gelletly, T.Yoshida, A.L.Nichols, A.Sonzogni, K.Perajarvi Improvements on Decay Heat Summation Calculations by Means of Total Absorption Gamma-ray Spectroscopy Measurements RADIOACTIVITY 101Nb, 101,105Mo, 102,104,105,106,107Tc(β-)[from U(p, F), E=30-50 MeV]; measured decay products using TAGS (Total Absorption Gamma Spectrometer) with Penning trap at IGISOL (JYFLTRAP); deduced decay heat.
doi: 10.3938/jkps.59.1479
2011ER02 Phys.Rev. C 83, 055501 (2011); Pub.Note Phys.Rev. C 84, 059905 (2011) T.Eronen, D.Gorelov, J.Hakala, J.C.Hardy, A.Jokinen, A.Kankainen, I.D.Moore, H.Penttila, M.Reponen, J.Rissanen, A.Saastamoinen, J.Aysto QEC values of the superallowed β emitters 10C, 34Ar, 38Ca, and 46V ATOMIC MASSES 10C, 10B, 34Ar, 34Cl, 34mCl, 38Ca, 38mK, 38Ar, 46V, 46Ti; measured resonance frequencies ratios using JYFLTRAP Penning-trap and 10C, 34Ar, 38Ca and 46V beams from IGISOL; deduced Q values for β+ decay. Time-of-flight ion-cyclotron-resonance (TOF-ICR) technique. RADIOACTIVITY 10C, 34Ar, 38Ca, 46V(β+); measured Q values for decay from mass measurements.
doi: 10.1103/PhysRevC.83.055501
2011HA48 Eur.Phys.J. A 47, 129 (2011) J.Hakala, R.Rodriguez-Guzman, V.-V.Elomaa, T.Eronen, A.Jokinen, V.S.Kolhinen, I.D.Moore, H.Penttila, M.Reponen, J.Rissanen, A.Saastamoinen, J.Aysto Precision mass measurements of neutron-rich Y, Nb, Mo, Tc, Ru, Rh, and Pd isotopes RADIOACTIVITY 102,103Y, 108Nb, 113Tc, 114,116Ru, 119Rh, 118,120,121,122Pd, 114Tc, 111Mo(β-)[from proton-induced fission]; measured cyclotron frequency; deduced mass excess, 2n, 2p separation energies using reference ions; calculated mass excess using HFB with Gogny D1S force and D1N Gogny Energy Density Functional. JYFLTRAP Penning trap mass spectrometer. Compared with AME.
doi: 10.1140/epja/i2011-11129-9
2011KI14 Phys.Rev. C 83, 065802 (2011), Erratum Phys.Rev. C 84, 049902 (2011) O.S.Kirsebom, S.Hyldegaard, M.Alcorta, M.J.G.Borge, J.Buscher, T.Eronen, S.Fox, B.R.Fulton, H.O.U.Fynbo, H.Hultgren, A.Jokinen, B.Jonson, A.Kankainen, P.Karvonen, T.Kessler, A.Laird, M.Madurga, I.Moore, G.Nyman, H.Penttila, S.Rahaman, M.Reponen, K.Riisager, T.Roger, J.Ronkainen, A.Saastamoinen, O.Tengblad, J.Aysto Precise and accurate determination of the 8B decay spectrum RADIOACTIVITY 8B(β+)[from 6Li(3He, n), E=7.0 MeV]; measured β spectra, β-delayed α spectra, Eα, αα-coin. 8Be; deduced excitation distribution. Discussed implication of 8B neutrino spectrum. 20Na(β+); measured β-delayed α spectrum and used for calibration. Monte-Carlo simulations of β decay of 8B. R-matrix parameterization.
doi: 10.1103/PhysRevC.83.065802
2011KI26 Eur.Phys.J. A 47, 130 (2011) O.S.Kirsebom, H.O.U.Fynbo, A.Jokinen, M.Madurga and K.Riisager, A.Saastamoinen, O.Tengblad, J.Aysto New β-delayed proton lines from 23Al RADIOACTIVITY 23Al(β+), (EC); measured β-delayed Ep, Ip; deduced levels, J, π, branching ratio, log ft, B(GT) for individual levels. Compared with other data.
doi: 10.1140/epja/i2011-11130-4
2011KU16 Phys.Rev. C 84, 044304 (2011) J.Kurpeta, W.Urban, A.Plochocki, J.Rissanen, J.A.Pinston, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, I.D.Moore, H.Penttila, A.Saastamoinen, C.Weber, J.Aysto Signatures of oblate deformation in the 111Tc nucleus RADIOACTIVITY 111Mo(β-)[from 238U(d, F), E=25 MeV]; measured Eγ, Iγ, γγ-, βγ-coin, half-life. 111Tc; deduced levels, J, π, conversion coefficients, multipolarities, Iβ, logft, Q value. 111Tc(β-) [from 111Tc decay]; measured Eγ, βγ-coin. IGISOL3 mass separator coupled to JYFLTRAP Penning trap. Comparison with particle-plus-rotor model calculations.
doi: 10.1103/PhysRevC.84.044304
2011PE31 J.Korean Phys.Soc. 59, 1589s (2011) H.Penttila, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, V.S.Kolhinen, I.D.Moore, J.Rissanen, M.Reponen, A.Saastamoinen, V.Sonnenschein, J.Aysto The Possibilities of the Extended IGISOL Facility at JYFL
doi: 10.3938/jkps.59.1589
2011RI01 Phys.Rev. C 83, 011301 (2011); Erratum Phys.Rev. C 83, 029901 (2011) J.Rissanen, J.Kurpeta, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, I.D.Moore, P.Karvonen, A.Plochocki, L.Prochniak, H.Penttila, S.Rahaman, M.Reponen, A.Saastamoinen, J.Szerypo, W.Urban, C.Weber, J.Aysto Decay study of 114Tc with a Penning trap RADIOACTIVITY 114Tc(β-)[from U(d, X), E=25 MeV]; measured Eγ, Iγ, γγ-coin, half-lives, mass difference by Penning-Trap (JYFLTRAP) assisted spectroscopy. IGISOL facility. 114Ru; deduced levels, isomers, J, π, configurations, Q value for β decay, logft. Comparison with microscopic Bohr-Hamiltonian calculations using Sly4 Skyrme interaction.
doi: 10.1103/PhysRevC.83.011301
2011RI07 Eur.Phys.J. A 47, 97 (2011); Erratum Eur.Phys.J. A 47, 116 (2011) J.Rissanen, J.Kurpeta, A.Plochocki, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, I.D.Moore, H.Penttila, S.Rahaman, A.Saastamoinen, W.Urban, C.Weber, J.Aysto Penning-trap-assisted study of 115Ru beta decay RADIOACTIVITY 115Ru(β-)[from U(p, f), E=25 MeV, selected by JYFLTRAP]; measured Eγ, Iγ, Eβ, Iβ, X-rays, βγ-coin. 115Rh deduced levels, J, π, level log ft, level β-feeding, ICC(K) for 80.1 keV transition, rotational constants for the K=1/2 intruder band. 115Ru deduced ground state J, π, β-strength distribution. Penning-trap-assisted β and γ spectroscopy, IGISOL facility. Comparison with near-by isotopes of Ru and Rh.
doi: 10.1140/epja/i2011-11097-0
2011SA15 Phys.Rev. C 83, 045808 (2011) A.Saastamoinen, L.Trache, A.Banu, M.A.Bentley, T.Davinson, J.C.Hardy, V.E.Iacob, M.McCleskey, B.T.Roeder, E.Simmons, G.Tabacaru, R.E.Tribble, P.J.Woods, J.Aysto Experimental study of β-delayed proton decay of 23Al for nucleosynthesis in novae RADIOACTIVITY 23Al(β+), (β+p); measured E(p), I(p), Eγ, Iγ, βγ-, βp-coin. 22Na, 23Mg; deduced levels, J, π, widths, IAS of 23Al, resonance strength at 7787 keV and its contribution to the reaction rates for 22Na(p, γ) reaction at typical nova peak temperatures.
doi: 10.1103/PhysRevC.83.045808
2011SO11 Eur.Phys.J. A 47, 40 (2011) J.Souin, T.Eronen, P.Ascher, L.Audirac, J.Aysto, B.Blank, V.-V.Elomaa, J.Giovinazzo, J.Hakala, A.Jokinen, V.S.Kolhinen, P.Karvonen, I.D.Moore, S.Rahaman, J.Rissanen, A.Saastamoinen, J.C.Thomas Precision half-life and Q -value measurement of the super-allowed β emitter 30S RADIOACTIVITY 30S(EC) [from Ni2P(p, X), E=35 MeV]; measured cyclotron frequency ratio, Eβ, Iβ, Eγ, Iγ; deduced Q-value, T1/2 and uncertainties. JYFLTRAP Penning trap setup.
doi: 10.1140/epja/i2011-11040-5
2010AL22 Phys.Rev.Lett. 105, 202501 (2010) A.Algora, D.Jordan, J.L.Tain, B.Rubio, J.Agramunt, A.B.Perez-Cerdan, F.Molina, L.Caballero, E.Nacher, A.Krasznahorkay, M.D.Hunyadi, J.Gulyas, A.Vitez, M.Csatlos, L.Csige, J.Aysto, H.Penttila, I.D.Moore, T.Eronen, A.Jokinen, A.Nieminen, J.Hakala, P.Karvonen, A.Kankainen, A.Saastamoinen, J.Rissanen, T.Kessler, C.Weber, J.Ronkainen, S.Rahaman, V.Elomaa, S.Rinta-Antila, U.Hager, T.Sonoda, K.Burkard, W.Huller, L.Batist, W.Gelletly, A.L.Nichols, T.Yoshida, A.A.Sonzogni, K.Perajarvi Reactor Decay Heat in 239Pu: Solving the γ Discrepancy in the 4-3000-s Cooling Period RADIOACTIVITY 101Nb, 105Mo, 102,104,105,106,107Tc(β-) [from U(p, X), E=30, 50 MeV]; measured Eγ, Iγ, mass; deduced β-feeding probabilities, discrepancies for decay heat of 239Pu.
doi: 10.1103/PhysRevLett.105.202501
2010CH15 Phys.Lett. B 690, 346 (2010) F.C.Charlwood, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, S.Fritzsche, M.Honma, A.Jokinen, I.D.Moore, H.Penttila, R.Powis, A.Saastamoinen, G.Tungate, J.Aysto Ground state properties of manganese isotopes across the N=28 shell closure NUCLEAR REACTIONS 50,52Cr(p, n), E=14 MeV; 50Cr(d, n), E=13 MeV;55Mn(p, xnp)53Mn/54Mn, E=33 MeV; 56Fe(d, 2p), E=25 MeV; measured hyperfine spectra; deduced magnetic dipole moments, quadrupole moments, mean-square charge radii, shell closure. Comparison with shell model calculation using GXPF1A interaction.
doi: 10.1016/j.physletb.2010.05.060
2010HY01 Phys.Rev. C 81, 024303 (2010) S.Hyldegaard, M.Alcorta, B.Bastin, M.J.G.Borge, R.Boutami, S.Brandenburg, J.Buscher, P.Dendooven, C.Aa.Diget, P.Van Duppen, T.Eronen, S.P.Fox, L.M.Fraile, B.R.Fulton, H.O.U.Fynbo, J.Huikari, M.Huyse, H.B.Jeppesen, A.S.Jokinen, B.Jonson, K.Jungmann, A.Kankainen, O.S.Kirsebom, M.Madurga, I.Moore, A.Nieminen, T.Nilsson, G.Nyman, G.J.G.Onderwater, H.Penttila, K.Perajarvi, R.Raabe, K.Riisager, S.Rinta-Antila, A.Rogachevskiy, A.Saastamoinen, M.Sohani, O.Tengblad, E.Traykov, Y.Wang, K.Wilhelmsen, H.W.Wilschut, J.Aysto R-matrix analysis of the β decays of 12N and 12B RADIOACTIVITY 12N(β+), 12B(β-); measured 3α summed spectra and associated branching ratios for breakup via the 8Be ground-state and via excited states of 8Be. 12C; deduced levels, resonances, Gammow-Teller strengths and widths using multilevel, many-channel R-matrix formalism.
doi: 10.1103/PhysRevC.81.024303
2010KA26 Phys.Rev. C 82, 034311 (2010) A.Kankainen, V.-V.Elomaa, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, T.Kessler, V.S.Kolhinen, I.D.Moore, S.Rahaman, M.Reponen, J.Rissanen, A.Saastamoinen, C.Weber, J.Aysto Mass measurements in the vicinity of the doubly magic waiting point 56Ni ATOMIC MASSES 56,57Fe, 53,53m,56Co, 55,56,57Ni, 57,58Cu, 59,60Zn; measured cyclotron resonance frequencies and ratios by JYFLTRAP Penning trap spectrometer; deduced mass excesses. 56,57Fe, 53,53m,55,56Co, 55,56,57,58Ni, 57,58,59Cu, 53,56,57Fe, 59,60Zn; measured frequency ratio pairs. Comparison with previous mass measurements. 53,54Co, 55,56Ni, 57,58Cu, 59,60Zn; deduced Coulomb displacement energies for the T=1/2 doublets and T=1 triplets. 53Co, 54,55,56Ni, 56,57,58Cu, 58,59,60Zn, 60,61Ga; deduced S(p) values. Comparison of all the deduced values with AME-2003. RADIOACTIVITY 53Co(EC), 53mCo(EC), (p); deduced Q values and revised level schemes. 53Co; deduced energy of the high-spin isomer. 53Co, 55,56Ni, 57,58Cu, 59,60Zn(EC); deduced Q values from measured masses, electron capture probabilities, Logft values, and Gamow-Teller matrix elements. NUCLEAR REACTIONS 54Fe(p, X)53Co/53mCo/56Ni/57Cu/58Cu, E=40, 50 MeV; 54Fe(3He, X)55Ni/56Ni/59Zn/60Zn, E=25 MeV; Ca(20Ne, X)56Co/57Ni, E=75, 105 MeV; measured masses of product nuclides. 56Ni(p, γ)57Cu; deduced reaction Q value, proton resonance energies, rescaled proton widths, and reaction rates of astrophysical significance.
doi: 10.1103/PhysRevC.82.034311
2010KA30 Phys.Rev. C 82, 052501 (2010) A.Kankainen, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, V.S.Kolhinen, M.Reponen, J.Rissanen, A.Saastamoinen, V.Sonnenschein, J.Aysto High-precision mass measurement of 31S with the double Penning trap JYFLTRAP improves the mass value for 32Cl ATOMIC MASSES 31S; measured mass by time-of-flight (TOF) ion-cyclotron resonance method using JYFLTRAP double Penning trap mass spectrometer using 31P as reference; deduced mass excess and Q value for EC decay. 32Cl; analyzed mass excess from S(p); deduced improved Q(ϵ) value and logft. 32Si, 32P, 32S, 32Cl, 32Ar; analyzed isobaric mass multiplet equation (IMME) for A=32, T=2 quintet. Comparison of masses with previous measurements and evaluations. RADIOACTIVITY 31S(EC)[from 32S(p, pn), E=40 MeV]; measured mass using IGISOL and JYFLTRAP facilities; deduced Q value, logft. 32S, 32Cl, 32Ar(EC); analyzed Q values, logft. Implication for superallowed β decay of 32Ar.
doi: 10.1103/PhysRevC.82.052501
2010KO28 Phys.Rev. C 82, 022501 (2010) V.S.Kolhinen, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, J.Rissanen, A.Saastamoinen, J.Suhonen, J.Aysto Double-β decay Q value of 150Nd ATOMIC MASSES 150Nd, 150Sm; measured cyclotron frequencies using JYFLTRAP Penning-trap mass spectrometer; deduced mass difference and Q value for double-beta decay. Comparison with AME 2003. RADIOACTIVITY 150Nd(2β-); deduced Q value from mass difference measurement of 150Nd and 150Sm using JYFLTRAP Penning-trap mass spectrometer. Comparison with AME 2003.
doi: 10.1103/PhysRevC.82.022501
2010KU01 Acta Phys.Pol. B41, 469 (2010) J.Kurpeta, J.Rissanen, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, P.Karvonen, I.D.Moore, H.Penttila, A.Plochocki, S.Rahaman, S.Rinta-Antila, J.Ronkainen, A.Saastamoinen, T.Sonoda, J.Szerypo, W.Urban, Ch.Weber, J.Aysto Progress in Trap Assisted β Decay Spectroscopy of 115Ru RADIOACTIVITY 115Ru(β-) [from 238U(p, F)115Ru, E=25 MeV]; measured Eγ, Iγ, γγ-coin.; deduced energy levels, gamma transitions, T1/2. JYFLTRAP Penning trap system.
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2010KU19 Phys.Rev. C 82, 027306 (2010) J.Kurpeta, W.Urban, A.Plochocki, J.Rissanen, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, I.D.Moore, H.Penttila, S.Rahaman, A.Saastamoinen, T.Sonoda, J.Szerypo, C.Weber, J.Aysto Excited states in 115Pd populated in the β- decay of 115Rh RADIOACTIVITY 115Rh(β-); measured Eγ, Iγ, γγ-coin. 115Pd; deduced levels, J, π. Systematics of low-lying states in odd-A Mo, Ru and Pd nuclei from N=61-71.
doi: 10.1103/PhysRevC.82.027306
2010KU25 Phys.Rev. C 82, 064318 (2010) J.Kurpeta, J.Rissanen, A.Plochocki, W.Urban, V.-V.Elomaa, T.Eronen, J.Hakala, A.Jokinen, A.Kankainen, P.Karvonen, T.Malkiewicz, I.D.Moore, H.Penttila, A.Saastamoinen, G.S.Simpson, C.Weber, J.Aysto New isomer and decay half-life of 115Ru RADIOACTIVITY 115Ru(IT), (β-)[From 238U(p, X), E=25 MeV]; measured Eγ, Iγ, βγ-, γγ-coin, isomer and ground state half-lives, JYFLTRAP assisted β-γ spectroscopy. 115Ru, 115Rh; deduced levels, J, π, conversion coefficients, multipolarity. systematics of low-lying levels and isomers in 113,115,117Pd, 113,115Ru.
doi: 10.1103/PhysRevC.82.064318
2010PE06 Eur.Phys.J. A 44, 147 (2010) H.Penttila, P.Karvonen, T.Eronen, V.-V.Elomaa, U.Hager, J.Hakala, A.Jokinen, A.Kankainen, I.D.Moore, K.Perajarvi, S.Rahaman, S.Rinta-Antila, V.Rubchenya, A.Saastamoinen, T.Sonoda, J.Aysto Determining isotopic distributions of fission products with a Penning trap NUCLEAR REACTIONS 238U(p, F)Ge/Ag/In/Rb/Cs, E=25, 50 MeV; measured fission fragment yields using an ion guide and Penning trap. Comparison with other data.
doi: 10.1140/epja/i2010-10936-8
2010SA41 J.Phys.:Conf.Ser. 202, 012010 (2010) A.Saastamoinen, L.Trache, A.Banu, M.A.Bentley, T.Davinson, T.Eronen, J.C.Hardy, V.E.Iacob, D.Jenkins, A.Jokinen, M.McCleskey, B.Roeder, G.Tabacaru, R.E.Tribble, P.J.Woods, J.Aysto, for the IGISOL/MARS Collaboration Studies of astrophysically interesting nucleus 23Al NUCLEAR REACTIONS 1H(24Mg, 2n)23Al, E=48 MeV/nucleon; measured reaction products using DSSD (double-sided Si strip detector), Si and HPGe detectors at the focal plane of MARS separator, β-delayed 23Al proton decay; deduced proton branching. ATOMIC PHYSICS 23Al; measured mass, mass excess, proton separation using JYFLTRAP Penning trap at IGISOL.
doi: 10.1088/1742-6596/202/1/012010
2009CH09 Phys.Lett. B 674, 23 (2009) F.C.Charlwood, K.Baczynska, J.Billowes, P.Campbell, B.Cheal, T.Eronen, D.H.Forest, A.Jokinen, T.Kessler, I.D.Moore, H.Penttila, R.Powis, M.Ruffer, A.Saastamoinen, G.Tungate, J.Aysto Nuclear charge radii of molybdenum fission fragments NUCLEAR MOMENTS 90,91,92,94,95,96,97,98,100,102,103,104,105,106,108Mo; measured hfs; deduced hyperfine structure coefficients, charge radius, magnetic moment. Collinear laser spectroscopy.
doi: 10.1016/j.physletb.2009.02.050
2009CH25 Phys.Rev.Lett. 102, 222501 (2009) B.Cheal, K.Baczynska, J.Billowes, P.Campbell, F.C.Charlwood, T.Eronen, D.H.Forest, A.Jokinen, T.Kessler, I.D.Moore, M.Reponen, S.Rothe, M.Ruffer, A.Saastamoinen, G.Tungate, J.Aysto Laser Spectroscopy of Niobium Fission Fragments: First Use of Optical Pumping in an Ion Beam Cooler Buncher NUCLEAR MOMENTS 90,91,92,93,99,101,103Nb; measured collinear fluorescence spectra, hfs coefficients; deduced magnetic dipole, electric quadrupole moments, mean-square charge radii.
doi: 10.1103/PhysRevLett.102.222501
2009EL07 Phys.Rev.Lett. 102, 252501 (2009) V.-V.Elomaa, G.K.Vorobjev, A.Kankainen, L.Batist, S.Eliseev, T.Eronen, J.Hakala, A.Jokinen, I.D.Moore, Yu.N.Novikov, H.Penttila, A.Popov, S.Rahaman, J.Rissanen, A.Saastamoinen, H.Schatz, D.M.Seliverstov, C.Weber, J.Aysto Quenching of the SnSbTe Cycle in the rp Process ATOMIC MASSES 104,105,106,107,108Sn, 106,107,108,109,110Sb, 108,109Te, 111I; Measured atomic masses using JYFLTRAP Penning-trap spectrometer;deduced single-proton separation energy. Comparison with AME2003 evaluation.
doi: 10.1103/PhysRevLett.102.252501
2009ER07 Phys.Rev.Lett. 103, 252501 (2009) T.Eronen, V.-V.Elomaa, J.Hakala, J.C.Hardy, A.Jokinen, I.D.Moore, M.Reponen, J.Rissanen, A.Saastamoinen, C.Weber, J.Aysto QEC Values of the Superallowed β Emitters 34Cl and 38Km RADIOACTIVITY 34Cl, 38K(EC); measured cyclotron frequency ratios; deduced Q-values with high precision.Online Pening trap.
doi: 10.1103/PhysRevLett.103.252501
2009HY01 Phys.Lett. B 678, 459 (2009) S.Hyldegaard, C.Forssen, C.Aa.Diget, M.Alcorta, F.C.Barker, B.Bastin, M.J.G.Borge, R.Boutami, S.Brandenburg, J.Buscher, P.Dendooven, P.Van Duppen, T.Eronen, S.Fox, B.R.Fulton, H.O.U.Fynbo, J.Huikari, M.Huyse, H.B.Jeppesen, A.Jokinen, B.Jonson, K.Jungmann, A.Kankainen, O.Kirsebom, M.Madurga, I.Moore, P.Navratil, T.Nilsson, G.Nyman, G.J.G.Onderwater, H.Penttila, K.Perajarvi, R.Raabe, K.Riisager, S.Rinta-Antila, A.Rogachevskiy, A.Saastamoinen, M.Sohani, O.Tengblad, E.Traykov, J.P.Vary, Y.Wang, K.Wilhelmsen, H.W.Wilschut, J.Aysto Precise branching ratios to unbound 12C states from 12N and 12B β-decays NUCLEAR REACTIONS 1H(12C, n), 2H(11B, p), 12C(p, n), 11B(d, p), E not given; measured Eγ, Iγ, Eα, Iα, γα-coin, αα-coin, decay spectra; deduced branching ratio, log ft, B(GT) to various 12C states. Comparison with no-core shell model calculations. RADIOACTIVITY 12B(β-), 12N(β+); deduced branching ratio, log ft, B(GT) to various 12C states. Comparison with no-core shell model calculations.
doi: 10.1016/j.physletb.2009.06.064
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