NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = A.Chester Found 44 matches. 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
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 T1/2, 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
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 T1/2, 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
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 T1/2. 36Al; deduced levels, J, π, newly-observed β-decaying isomer, T1/2 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
2023OG04 Phys.Rev. C 108, 034304 (2023) T.H.Ogunbeku, B.P.Crider, S.N.Liddick, B.A.Brown, A.Chester, K.L.Childers, P.Chowdhury, E.Lamere, R.Lewis, B.Longfellow, R.S.Lubna, S.Lyons, S.K.Neupane, D.Perez-Loureiro, C.J.Prokop, A.L.Richard, U.Silwal, D.P.Siwakoti, D.C.Smith, M.K.Smith, Y.Xiao First half-life measurement of a low-lying isomer in 37Si
doi: 10.1103/PhysRevC.108.034304
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, T1/2 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 72,74,76,78,80Ga. 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
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 T1/2. 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
2022KI17 Phys.Rev. C 106, 034311 (2022) S.Kisyov, C.Y.Wu, J.Henderson, A.Gade, K.Kaneko, Y.Sun, N.Shimizu, T.Mizusaki, D.Rhodes, S.Biswas, A.Chester, M.Devlin, P.Farris, A.M.Hill, J.Li, E.Rubino, D.Weisshaar Structure of 126, 128Xe studied in Coulomb excitation measurements NUCLEAR REACTIONS 196Pt, 208Pb(126Xe, 126Xe'), (128Xe, 128Xe'), E(126Xe)=3.74 MeV/nucleon, E(128Xe)=3.81 MeV/nucleon; measured reaction products, Eγ, Iγ, (126Xe)γ-coin, (128Xe)γ-coin using JANUS array consisting of a pair of segmented double-sided Si detectors for particles, and SeGA array with sixteen 32-fold segmented HPGe detector for γ radiation at the NSCL-MSU facility. 126,128Xe; deduced levels, J, π, E2 matrix elements, B(E2), static quadrupole moments. GOSIA + GOSIA2 analyses; calculated Potential-energy surfaces (PES) in (Q0, Q2) plane. Comparison with PMMU shell model calculations, and with previous experimental results.
doi: 10.1103/PhysRevC.106.034311
2022NE12 Phys.Rev. C 106, 044320 (2022) S.Neupane, J.Heideman, R.Grzywacz, M.Cooper, J.Hooker, K.L.Jones, T.T.King, N.Kitamura, M.Madurga, K.Siegl, C.R.Thornsberry, P.Wagenknecht, Z.Y.Xu, L.H.Heilbronn, M.M.Rajabali, A.Chester, A.Richard, Y.Alberty-Jones, J.Derkin, T.N.Massey, D.Soltesz, N.T.Brewer, B.C.Rasco, K.P.Rykaczewski, M.Wolinska-Cichocka, J.Clark, D.Santiago-Gonzalez, G.Savard Demonstration of the neutron tracking capability of NEXT array in time-of-flight measurements to improve energy resolution RADIOACTIVITY 17N, 104Nb(β-n); measured neutron time-of-flight (ToF), En, In. Data on the commissioning of the Neutron dEtector with Xn Tracking (NEXT) array consisting of 8x4 optically separated segments. Measurement of 17N decay at National Superconducting Cyclotron Laboratory (NSCL), 106Nb decay Argonne National Laboratory (ANL, CARIBU Facility). NUCLEAR REACTIONS 27Al(d, n), E=7.44 MeV; measured neutron time-of-flight (ToF), En, In. Data on the commissioning of the Neutron dEtector with Xn Tracking (NEXT) array consisting of 8x4 optically separated segments. Deuteron beam from Ohio University Edwards Accelerator Laboratory (EAL).
doi: 10.1103/PhysRevC.106.044320
2022RH01 Phys.Rev. C 105, 024325 (2022) D.Rhodes, B.A.Brown, A.Gade, S.Biswas, A.Chester, P.Farris, J.Henderson, A.Hill, J.Li, F.Nowacki, E.Rubino, D.Weisshaar, C.Y.Wu Evolution of shape and collectivity along the Ge isotopic chain: The case of 80Ge NUCLEAR REACTIONS 196Pt(80Ge, 80Ge'), E=3.52 MeV/nucleon [secondary 80Ge beam produced in 9Be(82Se, X) reaction]; measured reaction products Eγ, Iγ, (particle)γ-coin. 80Ge; deduced B(E2), E2 and M1 matrix elements, spectroscopic quadrupole moments. GOSIA analisys. Comparison to other experimental results and shell model calculations. Results indicate a large prolate deformation in 80Ge. Systematics of B(E2) and quadrupole moments for even-A Ge isotopes. Detector system - Joint Array for Nuclear Structure (JANUS) consisting of two annular silicon detectors (Bambino2) with the Segmented Germanium Array (SeGA). Beam provided by reaccelerator facility (ReA3) of NSCL.
doi: 10.1103/PhysRevC.105.024325
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 T1/2, βp branching ratio, β-γ-p decay mode transitions. The Coupled Cyclotron Facility of NSCL.
doi: 10.1016/j.physletb.2022.137059
2022SM02 Phys.Rev. C 106, 014312 (2022) J.Smallcombe, A.B.Garnsworthy, W.Korten, P.Singh, F.A.Ali, C.Andreoiu, S.Ansari, G.C.Ball, C.J.Barton, S.S.Bhattacharjee, M.Bowry, R.Caballero-Folch, A.Chester, S.A.Gillespie, G.F.Grinyer, G.Hackman, C.Jones, B.Melon, M.Moukaddam, A.Nannini, P.Ruotsalainen, K.Starosta, C.E.Svensson, R.Wadsworth, J.Williams Improved measurement of the 02+ → 01+ E0 transition strength for 72Se using the SPICE spectrometer NUCLEAR REACTIONS 40Ca(36Ar, 4p), E=120 MeV from TRIUMF-ISAC-II linear accelerator; measured reaction products, Eγ, Iγ, ce, γγ-coin, (ce)γ-coin, and (ce)γ(t) using TIGRESS array of 12 HPGe clover detectors for γ detection, and SPICE array and a Si(Li) detector for conversion electrons. 72Se; deduced levels, T1/2 of 937, 0+ level, I(937, E0)/I(γ+ce)(75γ, E2) ratio, qK2(E0/E2) and ρ2(E0, 937) transition strength. Comparison with previous experimental results, and with two state mixing theoretical calculations for the g.s. and the first 2+ state. Systematics of experimental B(E2) and ρ2(E0) strengths in 66,68,70,72,74Ge, 68,70,72,74,76Se, 70,72,74,76,78Kr.
doi: 10.1103/PhysRevC.106.014312
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 T1/2, 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
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, T1/2 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 T1/2, 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
2021GI14 Phys.Rev. C 104, 044313 (2021) S.A.Gillespie, J.Henderson, K.Abrahams, F.A.Ali, L.Atar, G.C.Ball, N.Bernier, S.S.Bhattcharjee, R.Caballero-Folch, M.Bowry, A.Chester, R.Coleman, T.Drake, E.Dunling, A.B.Garnsworthy, B.Greaves, G.F.Grinyer, G.Hackman, E.Kasanda, R.LaFleur, S.Masango, D.Muecher, C.Ngwetsheni, S.S.Ntshangase, B.Olaizola, J.N.Orce, T.Rockman, Y.Saito, L.Sexton, P.Siuryte, J.Smallcombe, J.K.Smith, C.E.Svensson, E.Timakova, R.Wadsworth, J.Williams, M.S.C.Winokan, C.Y.Wu, T.Zidar Coulomb excitation of 80, 82Kr and a change in structure approaching N=Z=40 NUCLEAR REACTIONS 196Pt, 208Pb(80Kr, 80Kr'), (82Kr, 82Kr'), E=4.17 MeV/nucleon from TRIUMF offline ion source (OLIS) and ISAC accelerator; measured Eγ, Iγ, (particle)γ-coin using TIGRESS array for γ rays, and double-sided silicon strip detectors for scattered beam- and target-like nuclei. 80,82Kr; deduced levels, J, π, Coulomb-excitation yields, and analyzed using GOSIA coupled-channels code, E2 and M1 matrix elements, B(E2) and B(M1), and spectroscopic quadrupole moments for the first 2+ and 4+ states; analyzed rotational invariants, and covariances and correlations on matrix elements. Comparison with previous experimental data for E2 matrix element and B(E2) values. Systematics of B(E2) and quadrupole moments of 74,76,78,80,82,84Kr, and those of cos(3δ) parameters for the first 2+ states in 66,68,70,72Zn, 70,72,74,76,78Ge, 72,74,76,78,80Se, 74,76,78,80,82Kr, 76,78,80,82,84Sr, and compared with expected values for an axially symmetric rotor.
doi: 10.1103/PhysRevC.104.044313
2020CR04 Phys.Rev. C 102, 024335 (2020) S.Cruz, K.Wimmer, S.S.Bhattacharjee, P.C.Bender, G.Hackman, R.Krucken, F.Ames, C.Andreoiu, R.A.E.Austin, C.S.Bancroft, R.Braid, T.Bruhn, W.N.Catford, A.Cheeseman, A.Chester, D.S.Cross, C.Aa.Diget, T.Drake, A.B.Garnsworthy, R.Kanungo, A.Knapton, W.Korten, K.Kuhn, J.Lassen, R.Laxdal, M.Marchetto, A.Matta, D.Miller, M.Moukaddam, N.A.Orr, N.Sachmpazidi, A.Sanetullaev, C.E.Svensson, N.Terpstra, C.Unsworth, P.J.Voss Single-particle structure in neutron-rich Sr isotopes approaching the N=60 shape transition NUCLEAR REACTIONS 2H(94Sr, t), (95Sr, t), (96Sr, t), E=5.5 MeV/nucleon, [secondary beams of Sr isotopes produced in U(p, X), E=480 MeV primary reaction, followed by separation of Sr fragments using a laser ion source at TRIUMF-ISACII facility]; measured light charged particles using the highly segmented silicon detector array (SHARC), E(t), σ(θ), Eγ, Iγ, (triton)γ- and (triton)γγ-coin using TIGRESS array of eight clover detectors. 93,94,95Sr; deduced levels, J, π, L-transfers by DWBA analysis, spectroscopic factors, configurations. Comparison with shell-model calculations. Systematics of the excited 0+ states in 88,90,92,94,96,98,100Sr.
doi: 10.1103/PhysRevC.102.024335
2020SM02 Phys.Rev. C 102, 054314 (2020) J.K.Smith, A.B.Garnsworthy, J.L.Pore, C.Andreoiu, A.D.MacLean, A.Chester, Z.Beadle, G.C.Ball, P.C.Bender, V.Bildstein, R.Braid, A.Diaz Varela, R.Dunlop, L.J.Evitts, P.E.Garrett, G.Hackman, S.V.Ilyushkin, B.Jigmeddorj, K.Kuhn, A.T.Laffoley, K.G.Leach, D.Miller, W.J.Mills, W.Moore, M.Moukaddam, B.Olaizola, E.E.Peters, A.J.Radich, E.T.Rand, F.Sarazin, C.E.Svensson, S.J.Williams, S.W.Yates Spectroscopic study of 47Ca from the β- decay of 47K RADIOACTIVITY 47K(β-)[from U(p, X), E=500 MeV at the TRIUMF Cyclotron, followed by extraction of surface-ionized 47K ions, accelerated to 28 keV, passed through a high-resolution mass separator, and deposited on a mylar tape for counting]; measured Eγ, Iγ, Eβ, ce, γγ-coin, γγ(θ) using GRIFFIN array of 16 clover Ge detectors, plastic scintillators for β particles, and Si(Li) detectors for conversion electrons. 47Ca; deduced levels, J, π, multipolarities and mixing ratios, β feedings, logft, γ-branching ratios, B(GT). Comparison with previous results.
doi: 10.1103/PhysRevC.102.054314
2020WI11 Phys.Rev. C 102, 064302 (2020) J.Williams, G.C.Ball, A.Chester, P.Choudhary, T.Domingo, A.B.Garnsworthy, G.Hackman, J.Henderson, R.Henderson, R.Krucken, R.S.Lubna, J.Measures, O.Paetkau, J.Park, J.Smallcombe, P.C.Srivastava, K.Starosta, C.E.Svensson, K.Whitmore, M.Williams High-spin structure of the sd shell nuclei 25Na and 22Ne NUCLEAR REACTIONS 12C(18O, pα)25Na, (18O, 2α)22Ne, E=48 MeV; measured Eγ, Iγ, charged particles, γγ- and (particle)γ-coin, γ(θ), level half-lives by DSAM using TIGRESS array of 13 Compton suppressed HPGe clovers and a 38-element array of CsI(Tl) scintillators at the TRIUMF-ISAC facility. 22Ne, 25Na; deduced levels, J, π, multipolarities, B(E1), B(E2). Comparison with shell model calculations using the USDB, SDPF-MU, YSOX and FSU interactions, and with previous experimental results. Calculated proton and neutron occupancies for selected one-particle-one-hole states in 25Na, using the FSU interaction.
doi: 10.1103/PhysRevC.102.064302
2019CR06 Phys.Rev. C 100, 054321 (2019) S.Cruz, K.Wimmer, P.C.Bender, R.Krucken, G.Hackman, F.Ames, C.Andreoiu, R.A.E.Austin, C.S.Bancroft, R.Braid, T.Bruhn, W.N.Catford, A.Cheeseman, A.Chester, D.S.Cross, C.Aa.Diget, T.Drake, A.B.Garnsworthy, R.Kanungo, A.Knapton, W.Korten, K.Kuhn, J.Lassen, R.Laxdal, M.Marchetto, A.Matta, D.Miller, M.Moukaddam, N.A.Orr, N.Sachmpazidi, A.Sanetullaev, C.E.Svensson, N.Terpstra, C.Unsworth, P.J.Voss Single-particle structure of neutron-rich Sr isotopes via 2H(94, 95, 96Sr, p) reactions NUCLEAR REACTIONS 2H(94Sr, p), (95Sr, p), (96Sr, p), E=5.5 MeV/nucleon, [secondary 94,95,96Sr beams from U(p, F), E=480 MeV primary reaction and using TRIUMF RILIS for extraction of fragments]; measured recoiling light charged particles, Eγ, Iγ, angular distribution of charged particles using SHARC array of quasi-4π silicon strip detectors for particles and TIGRESS array for γ rays at TRIUMF-ISACII facility. 95,96,97Sr; deduced levels, J, L-transfers and spectroscopic factors using distorted wave Born approximation (DWBA) and adiabatic distorted wave approximation (ADWA) analyses. Comparison with shell-model calculations using realistic effective interactions.
doi: 10.1103/PhysRevC.100.054321
2019MA29 Phys.Rev. C 99, 044320 (2019) A.Matta, W.N.Catford, N.A.Orr, J.Henderson, P.Ruotsalainen, G.Hackman, A.B.Garnsworthy, F.Delaunay, R.Wilkinson, G.Lotay, Na.Tsunoda, T.Otsuka, A.J.Knapton, G.C.Ball, N.Bernier, C.Burbadge, A.Chester, D.S.Cross, S.Cruz, C.Aa.Diget, T.Domingo, T.E.Drake, L.J.Evitts, F.H.Garcia, S.Hallam, E.MacConnachie, M.Moukaddam, D.Muecher, E.Padilla-Rodal, O.Paetkau, J.Park, J.L.Pore, U.Rizwan, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, J.Williams, M.Williams Shell evolution approaching the N-20 island of inversion: Structure of 29Mg NUCLEAR REACTIONS 2H(28Mg, p), E=8.0 MeV/nucleon, [secondary 28Mg beam from C(p, X), E=520 MeV primary reaction at the ISAC2 of TRIUMF]; measured Ep, Ip, Eγ, Iγ, (recoil)γ-coin, and differential σ(θ) using SHARC array of double-sided silicon strip detectors, TIGRESS array of HPGe detectors, and TRIFOIL plastic scintillator. 29Mg; deduced levels, J, π, spectroscopic factors. Comparison with shell model calculations. Systematics of intruder states in 25,27,29,31Mg. NUCLEAR STRUCTURE 29Mg; calculated levels, J, π, neutron occupancies using shell model with EEdf1 interaction. Comparison with experimental data.
doi: 10.1103/PhysRevC.99.044320
2019PO06 Phys.Rev. C 100, 054327 (2019) J.L.Pore, C.Andreoiu, J.K.Smith, A.D.MacLean, A.Chester, J.D.Holt, G.C.Ball, P.C.Bender, V.Bildstein, R.Braid, A.Diaz Varela, R.Dunlop, L.J.Evitts, A.B.Garnsworthy, P.E.Garrett, G.Hackman, S.V.Ilyushkin, B.Jigmeddorj, K.Kuhn, P.Kunz, A.T.Laffoley, K.G.Leach, D.Miller, W.J.Mills, W.Moore, M.Moukaddam, L.N.Morrison, B.Olaizola, E.E.Peters, A.J.Radich, E.T.Rand, F.Sarazin, D.Southall, C.E.Svensson, S.J.Williams, S.W.Yates Detailed spectroscopy of 46Ca: A study of the β- decay of 46K RADIOACTIVITY 46K(β-)[from U(p, X), E=500 MeV]; measured Eγ, Iγ, γγ-coin, γγ(θ), ce, β particles using GRIFFIN array of 15 HPGe detectors for γ detection, PACES array of five Si(Li) detectors for conversion electrons, and SCEPTAR array of 10 plastic scintillators for β-particle tagging, half-life of 46K decay at TRIUMF-ISAC facility. 46Ca; deduced levels, J, π, β feedings, logft, γ-branching ratios, multipole mixing ratios. Comparison of level structure with theoretical predictions from microscopic valence space Hamiltonians derived from NN+3N forces.
doi: 10.1103/PhysRevC.100.054327
2019RA06 Phys.Rev. C 99, 021301 (2019) J.S.Randhawa, R.Kanungo, M.Holl, J.D.Holt, P.Navratil, S.R.Stroberg, G.Hagen, G.R.Jansen, M.Alcorta, C.Andreoiu, C.Barnes, C.Burbadge, D.Burke, A.A.Chen, A.Chester, G.Christian, S.Cruz, B.Davids, J.Even, G.Hackman, J.Henderson, S.Ishimoto, P.Jassal, S.Kaur, M.Keefe, D.Kisliuk, R.Krucken, J.Liang, J.Lighthall, E.McGee, J.Measures, M.Moukaddam, E.Padilla-Rodal, A.Shotter, I.J.Thompson, J.Turko, M.Williams, O.Workman Observation of excited states in 20Mg sheds light on nuclear forces and shell evolution NUCLEAR REACTIONS 2H(20Mg, d), (20Mg, d'), E=8.5 MeV/nucleon, [secondary 20Mg beam produced in Si(p, X), E=480 MeV fragmentation reaction using SiC target at ISAC-II facility]; measured scattered deuteron spectra, differential σ(θ) using annular single-sided silicon strip detector array and CsI(Tl) detectors (IRIS reaction spectroscopy facility) at TRIUMF. 20Mg; deduced levels, J, π, proton-unbound resonances. Comparison with ab initio calculations using the valence-space in-medium similarity renormalization-group (VS-IMSRG) approach.
doi: 10.1103/PhysRevC.99.021301
2019RU02 Phys.Rev. C 99, 051301 (2019) P.Ruotsalainen, J.Henderson, G.Hackman, G.H.Sargsyan, K.D.Launey, A.Saxena, P.C.Srivastava, S.R.Stroberg, T.Grahn, J.Pakarinen, G.C.Ball, R.Julin, P.T.Greenlees, J.Smallcombe, C.Andreoiu, N.Bernier, M.Bowry, M.Buckner, R.Caballero-Folch, A.Chester, S.Cruz, L.J.Evitts, R.Frederick, A.B.Garnsworthy, M.Holl, A.Kurkjian, D.Kisliuk, K.G.Leach, E.McGee, J.Measures, D.Mucher, J.Park, F.Sarazin, J.K.Smith, D.Southall, K.Starosta, C.E.Svensson, K.Whitmore, M.Williams, C.Y.Wu Isospin symmetry in B(E2) values: Coulomb excitation study of 21Mg NUCLEAR REACTIONS 196Pt(21Mg, 21Mg'), E=95 MeV; 110Pd(21Mg, 21Mg'), E=67 MeV; measured Eγ, Iγ, (particle)γ-coin, Coulomb excitation yields, half-life of the 1/2+ state in 21Mg using BAMBINO array for particle detection, and TIGRESS array for γ rays from Coulomb excited 21Mg states at TRIUMF-ISAC-II facility. 21Mg; deduced levels, J, π, Coulomb-excitation yields, E2 matrix elements, B(E2). GOSIA least-squares fit analysis. Systematics of 5/2+ to 1/2+ B(E2) values in T=-3/2 and +3/2 mirror nuclei: 21Mg, 21Fl; 25Si, 25Na; 29S, 29Al; 33Ar, 33P; 37Ca, 37Cl. Comparison with shell-model calculations with isospin conserving and breaking USD interactions, and using modern ab initio approach.
doi: 10.1103/PhysRevC.99.051301
2019SM03 Nucl.Instrum.Methods Phys.Res. A922, 47 (2019) J.K.Smith, A.D.MacLean, W.Ashfield, A.Chester, A.B.Garnsworthy, C.E.Svensson Gamma-gamma angular correlation analysis techniques with the GRIFFIN spectrometer RADIOACTIVITY 60Co(β-), 66Ga(EC), 152Eu(β-), (EC); measured decay products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies, J, π, mixing ratios. Comparison with GEANT4 simulations.
doi: 10.1016/j.nima.2018.10.097
2019WI07 Phys.Rev. C 100, 014322 (2019) J.Williams, G.C.Ball, A.Chester, T.Domingo, A.B.Garnsworthy, G.Hackman, J.Henderson, R.Henderson, R.Krucken, A.Kumar, K.D.Launey, J.Measures, O.Paetkau, J.Park, G.H.Sargsyan, J.Smallcombe, P.C.Srivastava, K.Starosta, C.E.Svensson, K.Whitmore, M.Williams Structure of 28Mg and influence of the neutron pf shell NUCLEAR REACTIONS 12C(18O, 2p), E=48 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), Ep, Ip, level half-lives by DSAM using the TIGRESS array and CsI(Tl) scintillator array for charged particle detection at ISACII-TRIUMF. 28Mg; deduced levels, intruder orbitals, J, π, B(E2). Systematics of yrast states in 24,26,28,30Mg, 30Si, 32S. Comparison with ab initio symmetry adapted no-core shell model (SA-NCSM) calculations using the SDPF-MU interaction, and with evaluated data in the ENSDF database. NUCLEAR STRUCTURE 28Mg; calculated levels, intruder orbitals, J, π, neutron occupancies in the pf shell, B(M1), B(M2), proton and neutron effective single-particle energies. Ab initio symmetry adapted no-core shell model (SA-NCSM) calculations using the SDPF-MU, USDB(sd) and SDPF(U) interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.100.014322
2018CH01 Nucl.Instrum.Methods Phys.Res. A882, 69 (2018) A.Chester, G.C.Ball, N.Bernier, D.S.Cross, T.Domingo, T.E.Drake, L.J.Evitts, F.H.Garcia, A.B.Garnsworthy, G.Hackman, S.Hallam, J.Henderson, R.Henderson, R.Krucken, E.MacConnachie, M.Moukaddam, E.Padilla-Rodal, O.Paetkau, J.L.Pore, U.Rizwan, P.Ruotsalainen, J.Shoults, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, K.Van Wieren, J.Williams, M.Williams Recoil distance method lifetime measurements at TRIUMF-ISAC using the TIGRESS Integrated Plunger NUCLEAR REACTIONS 27Al(84Kr, 84Kr'), E=250 MeV; measured reaction products, Eγ, Iγ. 84Kr; deduced first excited state T1/2 and uncertainty. Comparison with available data.
doi: 10.1016/j.nima.2017.11.029
2018CR06 Phys.Lett. B 786, 94 (2018) S.Cruz, P.C.Bender, R.Krucken, K.Wimmer, F.Ames, C.Andreoiu, R.A.E.Austin, C.S.Bancroft, R.Braid, T.Bruhn, W.N.Catford, A.Cheeseman, A.Chester, D.S.Cross, C.Aa.Diget, T.Drake, A.B.Garnsworthy, G.Hackman, R.Kanungo, A.Knapton, W.Korten, K.Kuhn, J.Lassen, R.Laxdal, M.Marchetto, A.Matta, D.Miller, M.Moukaddam, N.A.Orr, N.Sachmpazidi, A.Sanetullaev, C.E.Svensson, N.Terpstra, C.Unsworth, P.J.Voss Shape coexistence and mixing of low-lying 0+ states in 96Sr NUCLEAR REACTIONS 2H(95Sr, p), E=5.5 MeV/nucleon; measured reaction products, Eγ, Iγ. 96Sr; deduced γ-ray energies, σ(θ), spectroscopic factors.
doi: 10.1016/j.physletb.2018.09.031
2018HE09 Phys.Rev. C 97, 044311 (2018) J.Henderson, A.Chester, G.C.Ball, R.Caballero-Folch, T.Domingo, T.E.Drake, L.J.Evitts, A.B.Garnsworthy, G.Hackman, S.Hallam, M.Moukaddam, P.Ruotsalainen, J.Smallcombe, J.K.Smith, K.Starosta, C.E.Svensson, J.Williams Lifetimes of low-lying excited states in 8636Kr50 NUCLEAR REACTIONS C(86Kr, 86Kr'), E=256.7 MeV, unsafe Coulomb excitation; measured Eγ, 86Kr scattered particles, (particle)γ-coin, half-lives of 2+ and 3- states by Doppler-shift attenuation method (DSAM) using the 4π TIGRESS array for γ detection, and TIGRESS integrated plunger (TIP) for particle detection at TRIUMF-ISAC facility. 86Kr; deduced levels, B(E2), B(E1), B(M1). Comparison with previous measurements. Systematics of B(E2) values for first 2+ states in 80Zn, 82Ge, 84Se, 86Kr, 88Sr, 90Zr and 92Mo.
doi: 10.1103/PhysRevC.97.044311
2017CH28 Phys.Rev. C 96, 011302 (2017) A.Chester, G.C.Ball, R.Caballero-Folch, D.S.Cross, S.Cruz, T.Domingo, T.E.Drake, A.B.Garnsworthy, G.Hackman, S.Hallam, J.Henderson, R.Henderson, W.Korten, R.Krucken, M.Moukaddam, B.Olaizola, P.Ruotsalainen, J.Smallcombe, K.Starosta, C.E.Svensson, J.Williams, K.Wimmer Recoil distance method lifetime measurement of the 2+1 and implications for the structure of neutron-rich Sr isotopes NUCLEAR REACTIONS 27Al(94Sr, 94Sr'), (94Sr, 27Al')E=280 MeV; measured Eγ, Iγ, (27Al)γ-coin, half-life of the first 2+ state in 94Sr by recoil-distance method (RDM) using TIGRESS Integrated Plunger (TIP), and TIGRESS array for γ detection at TRIUMF-ISAC-II accelerator facility. Coulomb excitation. Geant4 simulations. 94Sr; deduced level, B(E2) for the first 2+ state. Comparison with previous measurements, and with theoretical model calculations.
doi: 10.1103/PhysRevC.96.011302
2017CR05 Eur.Phys.J. A 53, 216 (2017) D.S.Cross, J.L.Pore, C.Andreoiu, G.C.Ball, P.C.Bender, A.S.Chester, R.Churchman, G.A.Demand, A.Diaz Varela, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, G.Hackman, B.Hadinia, B.Jigmeddorj, A.T.Laffoley, A.Liblong, R.Kanungo, D.T.Miller, B.Noakes, C.M.Petrache, K.Starosta, C.E.Svensson, P.Voss, Z-M.Wang, J.M.Wilson, J.L.Wood, S.W.Yates Conversion-electron spectroscopy and gamma-gamma angular correlation measurements in 116Sn RADIOACTIVITY 116In(β-)[beam of predominantly 116m1In from 500 MeV protons on Ta]; measured Eγ, Iγ(θ), γγ-coin, eγ-coin, conversion electron spectrum. 116Sn; measured K-shell ICC, K/L ratios, E2/E1 multipole mixing ratios for 2+3 to 2+1; calculated γ-ray orientation coefficients, directional distribution coeffiecients, K/L intensity ratios using ICC calculator BrIccFO; deduced and 2+2 to 2+1 mixing ratios, and also mixing transitions among low-lying 4+ states, neutron broken-pair admixture (in addition to the dominant proton 2p2h component) in 4+2 state.
doi: 10.1140/epja/i2017-12412-5
2017PO02 Eur.Phys.J. A 53, 27 (2017) J.L.Pore, D.S.Cross, C.Andreoiu, R.Ashley, G.C.Ball, P.C.Bender, A.S.Chester, A.Diaz Varela, G.A.Demand, R.Dunlop, A.B.Garnsworthy, P.E.Garrett, G.Hackman, B.Hadinia, B.Jigmeddorj, A.T.Laffoley, A.Liblong, R.Kanungo, B.Noakes, C.M.Petrache, M.M.Rajabali, K.Starosta, C.E.Svensson, P.J.Voss, Z.M.Wang, J.L.Wood, S.W.Yates Study of the β- decay of 116m1In: A new interpretation of low-lying 0+ states in 116Sn RADIOACTIVITY 116mIn(β-); measured Eγ, Iγ, γγ-coin using 20 HPGe with BGO Compton-suppression shields, β particles using plastic scintillator; deduced rotational bands, first direct observation of 85 keV 2+2 to 0+3 γ transition, B(E2), γ branching ratios; calculated, deduced log ft, new band head of π 2p-2h rotational band in 116Sn.
doi: 10.1140/epja/i2017-12213-x
2017VO05 Phys.Rev. C 96, 024305 (2017) P.Voss, T.E.Drake, K.Starosta, C.Andreoiu, R.Ashley, G.C.Ball, P.C.Bender, A.Chester, R.Churchman, D.S.Cross, A.B.Garnsworthy, G.Hackman, B.Hadinia, R.Henderson, B.Jigmeddorj, S.Ketelhut, R.Krucken, A.T.Laffoley, K.G.Leach, D.Miller, R.Orlandi, C.J.Pearson, J.Pore, M.M.Rajabali, E.T.Rand, C.E.Svensson, E.Tardiff, C.Unsworth, Z.-M.Wang, A.Signoracci Doppler-shift attenuation lifetime measurement of the 36Ar 2+1 level NUCLEAR REACTIONS 12C(36Ar, 36Ar'), E=63 MeV; measured Eγ, (12C)γ-coin, half-life of the first 2+ state by Doppler-shift attenuation method (DSAM) following low-energy Coulomb excitation using TIGRESS spectrometer and PIN diode detectors at TRIUMF-ISAC facility. Carbon target backed with 197Au. 36Ar; deduced level, B(E2) for the first 2+ state, and compared with previous experimental data, and with shell-model calculations using USDB interaction.
doi: 10.1103/PhysRevC.96.024305
2017WI07 Nucl.Instrum.Methods Phys.Res. A859, 8 (2017) J.Williams, C.Andreoiu, R.Ashley, G.C.Ball, T.Ballast, P.C.Bender, C.Bolton, V.Bildstein, A.Chester, D.S.Cross, T.Domingo, T.Drake, A.Garnsworthy, P.Garrett, B.Hadinia, G.Hackman, R.Henderson, D.Jamieson, B.Jigmeddorj, A.Knapton, R.Kruecken, D.Miller, W.J.Mills, M.Moukaddam, M.Rajabali, U.Rizwan, K.Starosta, C.E.Svensson, C.Unsworth, A.D.Varela, P.Voss, Z.M.Wang, J.Wong Implementation of the Doppler shift attenuation method using TIP/TIGRESS at TRIUMF: Fusion-evaporation lifetime measurements in 22Ne NUCLEAR REACTIONS 12C(18O, 2α)22Ne, E=48 MeV; measured reaction products, Eα, Iα, Eγ, Iγ; deduced level energies, J, π, T1/2. DSAM, comparison with available data.
doi: 10.1016/j.nima.2017.03.059
2016DO10 Appl.Radiat.Isot. 119, 101 (2016) T.Domingo, K.Starosta, A.Chester, J.Williams A precise measurement of the 117mSn half-life RADIOACTIVITY 117Sn(IT) [from Sn(n, X)117mSn, E=14.1 MeV]; measured decay products, Eγ, Iγ; deduced T1/2 and its uncertainties, γ-ray ratio. Comparison with available data.
doi: 10.1016/j.apradiso.2016.11.010
2016PA03 Phys.Rev. C 93, 014315 (2016) J.Park, A.B.Garnsworthy, R.Krucken, C.Andreoiu, G.C.Ball, P.C.Bender, A.Chester, A.Close, P.Finlay, P.E.Garrett, J.Glister, G.Hackman, B.Hadinia, K.G.Leach, E.T.Rand, S.Sjue, K.Starosta, C.E.Svensson, E.Tardiff Shape coexistence and evolution in 98Sr RADIOACTIVITY 98Rb(β-)[from U(p, F), E=500 MeV at TRIUMF-ISAC]; measured Eγ, Iγ, I(ce), βγ-, β(ce)-, γγ-, γ(ce)- and ce(ce)-coincidences using 8π array of 20 Compton-suppressed HPGe detectors for γ rays, ten plastic scintillators for β detection, and a set of five Si(Li) detectors (PACES) for conversion electrons. 98Sr; deduced levels, absolute intensities of γ transitions, B(E0), B(E2). Comparison with two-state mixing model for interpretation of ρ2(E0) value, deduction of mixing of the two low-lying 0+ and 2+ states, and deformation parameters.
doi: 10.1103/PhysRevC.93.014315
2014KW03 Phys.Lett. B 732, 210 (2014) E.Kwan, C.Y.Wu, N.C.Summers, G.Hackman, T.E.Drake, C.Andreoiu, R.Ashley, G.C.Ball, P.C.Bender, A.J.Boston, H.C.Boston, A.Chester, A.Close, D.Cline, D.S.Cross, R.Dunlop, A.Finlay, A.B.Garnsworthy, A.B.Hayes, A.T.Laffoley, T.Nano, P.Navratil, C.J.Pearson, J.Pore, S.Quaglioni, C.E.Svensson, K.Starosta, I.J.Thompson, P.Voss, S.J.Williams, Z.M.Wang Precision measurement of the electromagnetic dipole strengths in 11Be NUCLEAR REACTIONS 196Pt(11Be, 11Be'), E=1.73, 2.09 MeV/nucleon;measured reaction products, Eγ, Iγ. 11Be; deduced yields, B(E1). Comparison with FRESCO code calculations.
doi: 10.1016/j.physletb.2014.03.049
2014SM01 Phys.Rev. C 89, 024602 (2014) D.Smalley, F.Sarazin, F.M.Nunes, B.A.Brown, P.Adsley, H.Al Falou, C.Andreoiu, B.Baartman, G.C.Ball, J.C.Blackmon, H.C.Boston, W.N.Catford, S.Chagnon-Lessard, A.Chester, R.M.Churchman, D.S.Cross, C.Aa.Diget, D.Di Valentino, S.P.Fox, B.R.Fulton, A.Garnsworthy, G.Hackman, U.Hager, R.Kshetri, J.N.Orce, N.A.Orr, E.Paul, M.Pearson, E.T.Rand, J.Rees, S.Sjue, C.E.Svensson, E.Tardiff, A.Diaz Varela, S.J.Williams, S.Yates Two-neutron transfer reaction mechanisms in 12C(6He, 4He)14C using a realistic three-body 6He model NUCLEAR REACTIONS 12C(6He, 6He), (6He, 6He'), E=30 MeV; measured 6He spectra, σ(θ); deduced optical potential parameters. 12C(6He, α)14C, E=30 MeV; measured Eα, Iα, σ(θ) using SHARC charged-particle detector and TIGRESS γ-detection arrays at ISAC-II-TRIUMF facility. 14C; deduced levels, J, π. Low energy elastic and inelastic scattering, and transfer reactions. Comparison with DWBA calculations including realistic three-body model, and shell-model calculations. Discussed higher-order effects in the reaction mechanism.
doi: 10.1103/PhysRevC.89.024602
2013DU14 Phys.Rev. C 88, 045501 (2013) R.Dunlop, G.C.Ball, J.R.Leslie, C.E.Svensson, I.S.Towner, C.Andreoiu, S.Chagnon-Lessard, A.Chester, D.S.Cross, P.Finlay, A.B.Garnsworthy, P.E.Garrett, J.Glister, G.Hackman, B.Hadinia, K.G.Leach, E.T.Rand, K.Starosta, E.R.Tardiff, S.Triambak, S.J.Williams, J.Wong, S.W.Yates, E.F.Zganjar High-precision branching-ratio measurement for the superallowed Β+ emitter 74Rb RADIOACTIVITY 74Rb(β+), (EC)[from Nb(p, X, ), E=500 MeV]; measured Eγ, Iγ, Eβ, Iβ, ce, γγ-, γ(ce)-, βγ-, β(ce)-coin using 8π array for γ rays, SCEPTAR for β particles and PACES for conversion electrons at ISAC-TRIUMF facility. 74Kr; deduced levels, J, π, conversion coefficients, multipolarity, E0 transition, branching ratio for superallowed β transition, logft, GT+F, isospin-symmetry breaking terms. Comparison of experimental GT values with theoretical values.
doi: 10.1103/PhysRevC.88.045501
2011ST06 Int.J.Mod.Phys. E20, 349 (2011) K.Starosta, A.Chester, I.Hamamoto, T.Koike, J.Timar Opportunities for collective model and chirality studies at TRIUMF
doi: 10.1142/S0218301311017715
2010FR07 J.Phys.:Conf.Ser. 205, 012043 (2010) C.Fransen, A.Dewald, T.Baumann, D.Bazin, A.Blazhev, B.A.Brown, A.Chester, A.Gade, T.Glasmacher, P.T.Greenlees, M.Hackstein, S.Harissopulos, U.Jakobsson, J.Jolie, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, T.Konstaninopoulos, A.Lagoyannis, M.Leino, P.Nieminen, M.Nyman, P.Petkov, P.Peura, T.Pissulla, P.Rahkila, W.Rother, P .Ruotsalainen, J.Saren, C.Scholey, J.Sorri, K.Starosta, A.Stolz, J.Uusitalo, P.Voss, D.Weisshaar New developments on the recoil distance doppler-shift method
doi: 10.1088/1742-6596/205/1/012043
2008DE30 Phys.Rev. C 78, 051302 (2008) A.Dewald, K.Starosta, P.Petkov, M.Hackstein, W.Rother, P.Adrich, A.M.Amthor, T.Baumann, D.Bazin, M.Bowen, A.Chester, A.Dunomes, A.Gade, D.Galaviz, T.Glasmacher, T.Ginter, M.Hausmann, J.Jolie, B.Melon, D.Miller, V.Moeller, R.P.Norris, T.Pissulla, M.Portillo, Y.Shimbara, A.Stolz, C.Vaman, P.Voss, D.Weisshaar Collectivity of neutron-rich palladium isotopes and the valence proton symmetry NUCLEAR REACTIONS 9Be(110Pd, 110Pd'), E=66 MeV/nucleon; 9Be(114Pd, 114Pd'), E=69 MeV/nucleon; measured Eγ, Iγ, half-lives using recoil distance doppler shift method. 110,114Pd; deduced levels, J, π, B(E2). 102,104,106,108,112,116Pd, 104,106,108,110,112,114,116,118Cd, 96,98,100,102,104,106,108,110,112,114Ru; systematics of B(E2) values. Coulomb excitation. Comparisons with Interacting Boson Model.
doi: 10.1103/PhysRevC.78.051302
2007ST16 Phys.Rev.Lett. 99, 042503 (2007) K.Starosta, A.Dewald, A.Dunomes, P.Adrich, A.M.Amthor, T.Baumann, D.Bazin, M.Bowen, B.A.Brown, A.Chester, A.Gade, D.Galaviz, T.Glasmacher, T.Ginter, M.Hausmann, M.Horoi, J.Jolie, B.Melon, D.Miller, V.Moeller, R.P.Norris, T.Pissulla, M.Portillo, W.Rother, Y.Shimbara, A.Stolz, C.Vaman, P.Voss, D.Weisshaar, V.Zelevinsky Shape and Structure of N=Z 64Ge: Electromagnetic Transition Rates from the Application of the Recoil Distance Method to a Knockout Reaction NUCLEAR REACTIONS 93Nb(65Ge, n), (63Zn, n), E not given; measured Eγ, Iγ and transition rates using recoil distance method. 64Ge, 62Zn deduced B(E2) and lifetimes.
doi: 10.1103/PhysRevLett.99.042503
2007VA22 Phys.Rev.Lett. 99, 162501 (2007) C.Vaman, C.Andreoiu, D.Bazin, A.Becerril, B.A.Brown, C.M.Campbell, A.Chester, J.M.Cook, D.C.Dinca, A.Gade, D.Galaviz, T.Glasmacher, M.Hjorth-Jensen, M.Horoi, D.Miller, V.Moeller, W.F.Mueller, A.Schiller, K.Starosta, A.Stolz, J.R.Terry, A.Volya, V.Zelevinsky, H.Zwahlen Z=50 Shell Gap near 100Sn from Intermediate-Energy Coulomb Excitations in Even-Mass 106-112Sn Isotopes NUCLEAR REACTIONS 197Au(106Sn, 106Sn'), (108Sn, 108Sn'), (110Sn, 110sn'), (112Sn, 112Sn'), E=78-81 MeV; measured Eγ, Iγ, (particle)γ-coinc from projectile coulomb excitation. 106,108,110,112Sn deduced B(E2).
doi: 10.1103/PhysRevLett.99.162501
2006CH26 Nucl.Instrum.Methods Phys.Res. A562, 230 (2006) A.Chester, P.Adrich, A.Becerril, D.Bazin, C.M.Campbell, J.M.Cook, D.-C.Dinca, W.F.Mueller, D.Miller, V.Moeller, R.P.Norris, M.Portillo, K.Starosta, A.Stolz, J.R.Terry, H.Zwahlen, C.Vaman, A.Dewald Application of the time-of-flight technique for lifetime measurements with relativistic beams of heavy nuclei NUCLEAR REACTIONS 93Nb(124Xe, 124Xe'), E=55 MeV/nucleon; measured Doppler-shifted Eγ, Iγ following projectile Coulomb excitation. 124Xe deduced excited state T1/2. Time-of-flight technique, recoil-distance technique.
doi: 10.1016/j.nima.2006.02.182
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