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NSR database version of April 11, 2024.

Search: Author = H.Mach

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2021SE17      Phys.Rev. C 104, 024317 (2021)

S.Sekal, L.M.Fraile, R.Lica, M.J.G.Borge, W.B.Walters, A.Aprahamian, C.Benchouk, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.G.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, H.Mach, N.Marginean, R.Marginean, Z.Meliani, B.Olaizola, V.Paziy, J.M.Regis, M.Rudigier, T.Sava, G.S.Simpson, M.Stanoiu, L.Stroe

Low-spin states in 80Ge populated in the β decay of the 80Ga 3- isomer

RADIOACTIVITY 80mGa(β-)[from decay of 80Zn produced in U(n, F), E=fast neutrons at the ISOLDE-CERN facility, followed by separation of fission fragments passed using the ISOLDE Resonance Ionization Laser Ion Source (RILIS) and high-resolution magnetic separator]; measured Eγ, Iγ, βγ- and γγ-coin using two HPGe detectors for γ rays and an NE111A organic plastic scintillator for β detection. 80Ge; deduced levels, J, π, β feedings, logft. Comparison with previous experimental results, and with shell-model and IBM calculations.

NUCLEAR STRUCTURE 70,72,74,76,78,80,82Ge, 82Se, 84Kr, 86Sr, 88Zr, 90Mo; calculated energies of second 0+ states by shell-model using Antoine code with JUN45 interaction, and NUSHELLX@MSU code with jj44bpn interaction, and IBM-1, IBM-2 models, and comparison with experimental values; Systematics of low-lying positive-parity levels up to 8+.

doi: 10.1103/PhysRevC.104.024317
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2020KN04      Phys.Rev. C 102, 054322 (2020)

L.Knafla, P.Alexa, U.Koster, G.Thiamova, J.-M.Regis, J.Jolie, A.Blanc, A.M.Bruce, A.Esmaylzadeh, L.M.Fraile, G.de France, G.Hafner, S.Ilieva, M.Jentschel, V.Karayonchev, W.Korten, T.Kroll, S.Lalkovski, S.Leoni, H.Mach, N.Marginean, P.Mutti, G.Pascovici, V.Paziy, Zs.Podolyak, P.H.Regan, O.J.Roberts, N.Saed-Samii, G.S.Simpson, J.F.Smith, T.Soldner, C.Townsley, C.A.Ur, W.Urban, A.Vancraeyenest, N.Warr

Lifetime measurements in the odd-A nucleus 177Hf

RADIOACTIVITY 177mLu(β-)[from thermal neutron activation of Lu(NO3)3 at the FRM2 reactor in Garching]; measured Eγ, Iγ, γγ-coin, half-lives of levels in 177Hf by γγ(t) and generalized-centroid-difference (GCD) method using EXILL-FATIMA array of eight HPGe-Clover detectors and 16 fast-timing LaBr3(Ce) detectors at ILL-Grenoble. 177Hf; deduced levels, J, π, B(M1), B(E2), B(E1), configurations. Comparison to particle-rotor-model (PRM), and quasiparticle-phonon-model (QPM) calculations with multipole-multipole interactions. 176Hf; calculated microscopic structure of the lowest 2-qp vibrational states.

doi: 10.1103/PhysRevC.102.054322
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2020KO03      Phys.Rev. C 101, 014303 (2020)

P.Koseoglou, V.Werner, N.Pietralla, S.Ilieva, T.Niksic, D.Vretenar, P.Alexa, M.Thurauf, C.Bernards, A.Blanc, A.M.Bruce, R.B.Cakirli, N.Cooper, L.M.Fraile, G.de France, M.Jentschel, J.Jolie, U.Koster, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, P.Mutti, Z.Patel, V.Paziy, Zs.Podolyak, P.H.Regan, J.-M.Regis, O.J.Roberts, N.Saed-Samii, G.S.Simpson, T.Soldner, C.A.Ur, W.Urban, D.Wilmsen, E.Wilson

Low-Z boundary of the N=88-0 shape phase transition: 148Ce near the critical point

NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutrons from PF1B, ILL-Grenoble facility; measured Eγ, γγ-coin, half-lives of the first 2+ and 4+ levels in 148Ce by fast-timing technique using the EXILL-FATIMA array of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators. 148Ce; deduced levels, B(E2) for the first 2+ 4+ states. Comparison with predictions of vibrator, rigid rotor, X(5) and X(5)-β8 models, and with previous experimental results. Systematics of E(first 4+)/E(first 2+) and energies of the yrast states for N=90 isotones 146Ba, 148Ce, 150Nd, 152Sm, 154Gd, 156Dy.

NUCLEAR STRUCTURE 144,146,148Ce, 146,148,150Nd, 148,150,152,154Sm; calculated quantum shape phase transition (QSPT) lines in the IBM symmetry triangle using IBM-1 model. 148Ce; calculated self-consistent triaxial quadrupole constrained energy surfaces and probability distributions in in the β-γ plane using Axial Skyrme-Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.101.014303
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2020PA26      Phys.Rev. C 102, 014329 (2020)

V.Paziy, L.M.Fraile, H.Mach, B.Olaizola, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, J.-M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters

Fast-timing study of 81Ga from the β decay of 81Zn

RADIOACTIVITY 81Zn(β-), (β-n)[from U(p, F), E=1.4 GeV at CERN PS-Booster (PSB) facility, followed by separation of ionized nuclei using the ISOLDE-RILIS]; measured Eγ, Iγ, b-, βγ- and γγ-coin, half-life of 81Zn decay, level half-lives by βγγ(t) fast-timing technique, β-delayed neutron branching ratio or Pn using HPGe and LaBr3 detectors for γ detection and a plastic scintillator for β detection at CERN-ISOLDE. 80,81Ga(β-); measured half-lives of 80Ga and 81Ga decays. 80,81Ga; deduced levels, J, π, Iβ, logft, B(M1), and B(E2). Comparison with large-scale shell model calculations using the NuShellX@MSU and ANTOINE codes with JUN45 and jj44b interactions. Systematics of low-lying levels in 71,73,75,77,79,81Ga, 79Cu, 83As, 85Br, 87Rb. 81Zn; discussed spin, parity and configuration of the ground state.

doi: 10.1103/PhysRevC.102.014329
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2019OL02      Phys.Rev. C 99, 024321 (2019)

B.Olaizola, L.M.Fraile, H.Mach, F.Nowacki, A.Poves, A.Aprahamian, J.A.Briz, J.Cal-Gonzalez, D.Ghita, U.Koster, W.Kurcewicz, S.R.Lesher, D.Pauwels, E.Picado, D.Radulov, G.S.Simpson, J.M.Udias

Properties of low-lying states in 65Co from lifetime measurements

RADIOACTIVITY 65Fe(β-)[from U(p, F), E=1.4 GeV followed by ionization using a Resonance Ionization Laser Ion Source (RILIS) at ISOLDE-CERN facility]; measured Eγ, Iγ, βγ- and γγ-coin, half-life of 65Fe g.s. from decay curves for γ rays, level half-lives by βγ(t) and βγγ(t) using fast timing technique. 65Co; deduced levels, J, π, β feedings, logft, B(M1), and B(E2). Comparison with large-scale shell model calculations.

NUCLEAR STRUCTURE 65Co; calculated levels, J, π, occupation numbers using shell-model with LNPS effective interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.99.024321
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2019SP03      Phys.Rev. C 100, 014311 (2019)

P.Spagnoletti, G.Simpson, S.Kisyov, D.Bucurescu, J.-M.Regis, N.Saed-Samii, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.de France, C.A.Ur, W.Urban, A.M.Bruce, C.Bernards, F.Drouet, L.M.Fraile, L.P.Gaffney, D.G.Ghita, S.Ilieva, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, C.Larijarni, R.Lica, H.Mach, N.Marginean, V.Paziy, Zs.Podolyak, P.H.Regan, M.Scheck, J.F.Smith, G.Thiamova, C.Townsley, A.Vancraeyenest, V.Vedia, N.Warr, V.Werner, M.Zielinska

Lifetimes and shape-coexisting states of 99Zr

NUCLEAR REACTIONS 235U(n, F), E=cold neutrons from high-flux reactor of the Institut Laue-Langevin; measured Eγ, Iγ, level half-lives by γγ(t) using EXILL-FATIMA Ge and LaBr3(Ce) detector array for fast-timing technique. 99Zr; deduced levels, J, π, B(E2), B(M1), Q(transition), β2, configuration, kinematic moment of inertia for ν3/2[451] band. Systematics of kinematic moments of inertia of ν3/2[411] bands in 99,101,103Zr, 97Sr. Comparison with theoretical calculations using IBFM-1 model, and with previous experimental results.

doi: 10.1103/PhysRevC.100.014311
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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
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2017AN15      Phys.Rev. C 96, 054323 (2017)

S.Ansari, J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, W.Korten, M.Zielinska, M.-D.Salsac, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, H.Mach, L.M.Fraile, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda

Experimental study of the lifetime and phase transition in neutron-rich 98, 100, 102Zr

NUCLEAR REACTIONS 235U(n, F), 241Pu(n, F), E=cold neutrons beam from PF1B, Institut Laue-Langevin (ILL), Grenoble; measured Eγ, γγ-coin, half-lives of the first 2+, 4+ and 6+ levels by fast-timing technique using the EXILL-FATIMA array consisting of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators; fast-timing coincidence events analyzed using method of mirror symmetric centroid difference (MSCD) and generalized centroid difference method (GCDM). 98,100,102Zr; deduced levels, B(E2). Comparison with Interacting Boson model and Monte-Carlo shell-model calculations, and with previous experimental results. Systematics of B(E2) values for the first 2+, 4+ and 6+ states in 96,98,100,102,104,106Zr.

doi: 10.1103/PhysRevC.96.054323
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2017LI06      J.Phys.(London) G44, 054002 (2017)

R.Lica, G.Benzoni, A.I.Morales, M.J.G.Borge, L.M.Fraile, H.Mach, M.Madurga, C.Sotty, V.Vedia, H.De Witte, J.Benito, T.Berry, N.Blasi, A.Bracco, F.Camera, S.Ceruti, V.Charviakova, N.Cieplicka-Orynczak, C.Costache, F.C.L.Crespi, J.Creswell, G.Fernandez-Martinez, H.Fynbo, P.Greenlees, I.Homm, M.Huyse, J.Jolie, V.Karayonchev, U.Koster, J.Konki, T.Kroll, J.Kurcewicz, T.Kurtukian-Nieto, I.Lazarus, S.Leoni, M.Lund, N.Marginean, R.Marginean, C.Mihai, R.Mihai, A.Negret, A.Orduz, Z.Patyk, S.Pascu, V.Pucknell, P.Rahkila, J.M.Regis, F.Rotaru, N.Saed-Samii, V.Sanchez-Tembleque, M.Stanoiu, O.Tengblad, M.Thuerauf, A.Turturica, P.Van Duppen, N.Warr

β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station

RADIOACTIVITY 148,149,150Cs(β-), (β-n)[from U(p, X), E=1.4 GeV at ISOLDE-CERN]; measured reaction products, Eγ, Iγ, βγ-, γγ-coin, half-lives of ground states of 148,149,150Cs, %Pn for the decay of 149Cs, half-lives of levels in 149Ba and 148Ce by βγγ(t). 149Ba; deduced levels, β feedings, multipolarities, half-lives. 148Ce; deduced half-life of the first 2+ state. Comparison with previous experimental half-lives, and with theoretical calculations.

doi: 10.1088/1361-6471/aa6015
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2017MA03      Phys.Rev. C 95, 014313 (2017)

H.Mach, A.Korgul, M.Gorska, H.Grawe, I.Matea, M.Stanoiu, L.M.Fraile, Yu.E.Penionzkevich, F.De Oliveira-Santos, D.Verney, S.Lukyanov, B.Cederwall, A.Covello, Z.Dlouhy, B.Fogelberg, G.De France, A.Gargano, G.Georgiev, R.Grzywacz, A.F.Lisetskiy, J.Mrazek, F.Nowacki, W.A.Plociennik, Zs.Podolyak, S.Ray, E.Ruchowska, M.-G.Saint-Laurent, M.Sawicka, Ch.Stodel, O.Tarasov

Ultrafast-timing lifetime measurements in 94Ru and 96Pd: Breakdown of the seniority scheme in N=50 isotones

NUCLEAR REACTIONS 9Be(112Sn, X), E=64 MeV/nucleon; measured reaction products using LISE3 spectrometer at GANIL, Eγ, level half-lives for the first 2+, 4+ and 6+ states by γγ(t) using fast timing technique with Ge and BaF2 detector combinations. 94Ru, 96Pd; deduced levels, B(E2). Comparison with large-scale shell-model calculations using different interactions. Systematics of B(E2) values in 92Mo, 94Ru, 95Rh, 96Pd and 98Cd.

doi: 10.1103/PhysRevC.95.014313
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2017OL03      Phys.Rev. C 95, 061303 (2017)

B.Olaizola, L.M.Fraile, H.Mach, A.Poves, F.Nowacki, A.Aprahamian, J.A.Briz, J.Cal-Gonzalez, D.Ghita, U.Koster, W.Kurcewicz, S.R.Lesher, D.Pauwels, E.Picado, D.Radulov, G.S.Simpson, J.M.Udias

Search for shape-coexisting 0+ states in 66Ni from lifetime measurements

RADIOACTIVITY 66Co(β-)[from 66Mn -> 66Fe decay, 66Mn from U(p, F), E=1.4 GeV at ISOLDE-CERN facility using RILIS]; measured Eγ, half-life of an excited 0+ state by βγγ(t) method using LaBr3(Ce) crystals and two HPGe detectors for γ rays, and a fast plastic scintillator for beta particles. 66Ni; deduced levels, B(E2). Comparison with large-scale shell model calculations, and with previous experimental data.

doi: 10.1103/PhysRevC.95.061303
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2017OL08      J.Phys.(London) G44, 125103 (2017)

B.Olaizola, L.M.Fraile, H.Mach, A.Poves, A.Aprahamian, J.A.Briz, J.Cal-Gonzalez, D.Ghita, U.Koster, W.Kurcewicz, S.R.Lesher, D.Pauwels, E.Picado, D.Radulov, G.S.Simpson, J.M.Udias

Beta decay of 66Mn to the N = 40 nucleus 66Fe

RADIOACTIVITY 66Mn(β-), (β-n) [from U(p, X), E=1.4 GeV]; measured decay products, Eγ, Iγ; deduced 66Fe T1/2, γ-ray energies and intensities, B(E2), B(M1) limits. Comparison with shell model calculations.

doi: 10.1088/1361-6471/aa915e
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2017RE05      Phys.Rev. C 95, 054319 (2017); Erratum Phys.Rev. C 95, 069902 (2017)

J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, M.Pfeiffer, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, L.M.Fraile, H.Mach, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, W.Korten, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda

Abrupt shape transition at neutron number N=60: B(E2) values in 94, 96, 98Sr from fast γ - γ timing

NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutron beam; measured Eγ, Iγ, level half-lives by fast-timing γγ(t) method using EXILL and FATIMA spectrometer at ILL-Grenoble reactor facility. 94,96,98Sr; deduced levels, B(E2)values. Comparison with previous experimental values, and with Monte Carlo Shell-model calculations.

doi: 10.1103/PhysRevC.95.054319
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2017SP02      Phys.Rev. C 95, 021302 (2017)

P.Spagnoletti, G.S.Simpson, R.Carroll, J.-M.Regis, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.de France, C.A.Ur, W.Urban, A.M.Bruce, F.Drouet, L.M.Fraile, L.P.Gaffney, D.G.Ghita, S.Ilieva, J.Jolie, W.Korten, T.Kroll, C.Larijani, S.Lalkovski, R.Lica, H.Mach, N.Marginean, V.Paziy, Zs.Podolyak, P.H.Regan, M.Scheck, N.Saed-Samii, G.Thiamova, C.Townsley, A.Vancraeyenest, V.Vedia, A.Gargano, P.Van Isacker

Half-life of the 15/2+ state of 135I A test of E2 seniority relations

NUCLEAR REACTIONS 235U(n, F)135I, E=cold neutrons at PF1B facility and high-flux reactor of the ILL-Grenoble; measured prompt Eγ, Iγ, half-life of (15/2+) state in 135I by γγ(t) using EXILL-FATIMA γ-detector array of Clover Ge and LaBr3 detectors. 135I; deduced levels, B(E2), configuration, E2 seniority relations between B(E2) values in neighboring nuclei.

NUCLEAR STRUCTURE 134Te, 135I; calculated levels, J, π, B(E2) by large-scale shell-model calculations; deduced large two-body component of the E2 operator, whereas small energy shifts due to the three-body component of the effective interaction.

doi: 10.1103/PhysRevC.95.021302
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2017VE05      Phys.Rev. C 96, 034311 (2017)

V.Vedia, V.Paziy, L.M.Fraile, H.Mach, W.B.Walters, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, B.Olaizola, J.-M.Regis, M.Rudigier, T.Sava, G.S.Simpson, M.Stanoiu, L.Stroe

Search for the 73Ga ground-state doublet splitting in the β decay of 73Zn

RADIOACTIVITY 73Zn(β-)[from U(p, F), E=1.4 GeV]; measured Eγ, Iγ, βγ- and γγ-coin, half-life of 73Zn from γ-decay curves, level half-lives by fast-timing βγγ(t) technique using Resonance Ionization Laser Ion Source (RILIS) and magnetic high-resolution mass separator (HRS) at ISOLDE-CERN. 73Ga; deduced levels, ground state doublet, J, π, β feedings, logft, B(M1), B(E2). 73Zn(IT); measured Eγ, half-life of the isomer; deduced no evidence for a 42-keV transition from the isomer. Comparison with previous measurements, and with shell-model calculations. Systematics of level structure in 71,73,75Ga.

doi: 10.1103/PhysRevC.96.034311
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2016BO19      Phys.Lett. B 760, 273 (2016)

G.Bocchi, S.Leoni, B.Fornal, G.Colo, P.F.Bortignon, S.Bottoni, A.Bracco, C.Michelagnoli, D.Bazzacco, A.Blanc, G.de France, M.Jentschel, U.Koster, P.Mutti, J.-M.Regis, G.Simpson, T.Soldner, C.A.Ur, W.Urban, L.M.Fraile, R.Lozeva, B.Belvito, G.Benzoni, A.Bruce, R.Carroll, N.Cieplicka-Orynczak, F.C.L.Crespi, F.Didierjean, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, B.Melon, D.Mengoni, B.Million, A.Nannini, D.Napoli, B.Olaizola, V.Paziy, Zs.Podolyak, P.H.Regan, N.Saed-Samii, B.Szpak, V.Vedia

The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb

NUCLEAR REACTIONS 235U, 241Pu(n, F)133Sb, E low; measured fission products, Eγ, Iγ; deduced energy levels, J, π, level T1/2, B(Eλ). Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2016.06.065
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2016IL01      Phys.Rev. C 94, 034302 (2016)

S.Ilieva, Th.Kroll, J.-M.Regis, N.Saed-Samii, A.Blanc, A.M.Bruce, L.M.Fraile, G.de France, A.-L.Hartig, C.Henrich, A.Ignatov, M.Jentschel, J.Jolie, W.Korten, U.Koster, S.Lalkovski, R.Lozeva, H.Mach, N.Marginean, P.Mutti, V.Paziy, P.H.Regan, G.S.Simpson, T.Soldner, M.Thurauf, C.A.Ur, W.Urban, N.Warr

Measurement of picosecond lifetimes in neutron-rich Xe isotopes

NUCLEAR REACTIONS 235U, 241Pu(n, F), E=cold neutron; measured Eγ, Iγ, γγ-coin, level half-lives for the first 2+, 4+ and 6+ states by γγ(t) and recoil-distance Doppler shift method using plunger device. EXILL and FATIMA detector arrays used at ILL-Grenoble facility. 138,140,142Xe; deduced levels, J, π, B(E2). Comparison with previous experimental results, and shell-model calculations. Systematics of B(E2) values for the first 2+ states in 132,134,136,138,140,142,144Xe.

doi: 10.1103/PhysRevC.94.034302
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2016MA40      Eur.Phys.J. A 52, 172 (2016)

H.Mach, A.Lindroth, E.Ruchowska, J.Kvasil, B.Fogelberg, K.Gulda, A.J.Aas, M.J.G.Borge, I.S.Grant, E.Hagebo, W.Kurcewicz, T.Martinez, B.Rubio, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen

On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra

RADIOACTIVITY 223Fr(β-)[from 223Rn]; measured β-decay of (3/2)- and (5/2)- states (50 and 80 keV) Eγ, Iγ(t) using BaF2 crystal for timing and two Ge, Eβ, Iβ(t) using ΔE NE111A, βγ-coin; deduced time-delayed βγ(t) spectrum, T1/2, B(E1), B(E2), B(M1) for K=3/2 band states below 250 keV, intrinsic electric dipole moment D0; calculated T1/2, γ transition probabilities, B(E1), B(E2), B(M1), average electric dipole moment for 223,224Ra (and compared with available data for Ra isotopes), quadrupole and octupole vibration energies in 222,224Ra, structure of intrinsic states.

doi: 10.1140/epja/i2016-16172-4
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2016OL06      Phys.Rev. C 94, 054318 (2016)

B.Olaizola, H.Mach, L.M.Fraile, J.Benito, M.J.G.Borge, R.Boutami, P.A.Butler, Z.Dlouhy, H.O.U.Fynbo, P.Hoff, S.Hyldegaard, H.B.Jeppesen, A.Jokinen, C.Jollet, A.Korgul, U.Koster, Th.Kroll, W.Kurcewicz, F.Marechal, J.Mrazek, T.Nilsson, W.A.Plociennik, E.Ruchowska, R.Schuber, W.Schwerdtfeger, M.Sewtz, G.S.Simpson, M.Stanoiu, O.Tengblad, P.G.Thirolf, D.T.Yordanov

High-sensitivity study of levels in 30Al following β decay of 30Mg

RADIOACTIVITY 30Mg(β-), (β-n)[from U(p, F), E=1.4 GeV at CERN-ISOLDE]; measured Eγ, Iγ, Eβ, Iβ, βγ-, βγγ-coin, level half-lives by βγγ(t) fast timing method. 30Al; deduced levels, J, π, B(M1). Comparisons with shell-model calculations.

doi: 10.1103/PhysRevC.94.054318
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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
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2015RU09      Phys.Rev. C 92, 034328 (2015)

E.Ruchowska, H.Mach, M.Kowal, J.Skalski, W.A.Plociennik, B.Fogelberg

Search for octupole correlations in 147Nd

RADIOACTIVITY 147Pr(β-)[from 236U(n, F), E=thermal followed by mass separation of A=147 fragments]; measured Eγ, Iγ, γγ-coin, half-life of 147Pr ground state, level half-lives by βγγ(t) at OSIRIS-Studsvik facility. 147Nd; deduced levels, J, π, B(E2), B(M1), B(E1), B(M2), bands, electric dipole moment, single-quasiparticle configurations with nonzero octupole deformation. Calculated potential energy surfaces in (β2, β3) plane, and electric dipole moments.

doi: 10.1103/PhysRevC.92.034328
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2014LI32      Phys.Rev. C 90, 014320 (2014)

R.Lica, N.Marginean, D.G.Ghita, H.Mach, L.M.Fraile, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Marginean, B.Olaizola, V.Paziy, J.M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters

Low-lying isomeric states in 80Ga from the β- decay of 80Zn

RADIOACTIVITY 80Zn(β-)[from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, γγ-, βγ-coin, half-life of 708-keV level in 80Zn by βγγ(t) at ISOLDE-CERN facility. 80Ga; deduced levels, ordering of the ground state and long-lived isomer, J, π, conversion coefficient, multipolarities, β feedings, logft, reduced transition probabilities. Comparison with shell model calculations using jj44bpn and JUN45 interactions.

doi: 10.1103/PhysRevC.90.014320
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2014MA01      Hyperfine Interactions 223, 147 (2014)

H.Mach, L.M.Fraile

Fast life-time measurements on fission products

doi: 10.1007/s10751-012-0613-8
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2014RE15      Phys.Rev. C 90, 067301 (2014)

J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, M.Pfeiffer, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, L.M.Fraile, H.Mach, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, M.Thurauf, S.Lalkovski, D.Ivanova, S.Kisyov, W.Korten, M.-D.Salsac, M.Zielinska, N.Marginean, D.G.Ghita, R.Lica, C.M.Petrache, A.Astier, R.Leguillon

B(E2;2+1 → 0+1) value in 90Kr

NUCLEAR REACTIONS 235U(n, F), E=cold; measured prompt-fission Eγ, γγγ-coin, half-life of first 2+ state in 90Kr by fast timing technique using segmented array of Ge and Ce-doped LaBr3 detectors (EXILL and FATIMA) at ILL, Grenoble facility. 90Kr; deduced level, B(E2) of first 2+ state. Systematics of B(E2) values of first 2+ states in 86,88,90,92,94,96Kr. Comparison with IBM-2 calculations.

doi: 10.1103/PhysRevC.90.067301
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2014RE16      Nucl.Instrum.Methods Phys.Res. A763, 210 (2014)

J.-M.Regis, G.S.Simpson, A.Blanc, G.de France, M.Jentschel, U.Koster, P.Mutti, V.Paziy, N.Saed-Samii, T.Soldner, C.A.Ur, W.Urban, A.M.Bruce, F.Drouet, L.M.Fraile, S.Ilieva, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, G.Pascovici, Zs.Podolyak, P.H.Regan, O.J.Roberts, J.F.Smith, C.Townsley, A.Vancraeyenest, N.Warr

Germanium-gated γ-γ fast timing of excited states in fission fragments using the EXILL and FATIMA spectrometer

NUCLEAR REACTIONS 235U(n, F), E cold; 35Cl, 48Ti(n, γ), E thermal; measured reaction products, Eγ, Iγ. 100Zr; deduced energy levels, J, π, T1/2. Comparison with available data.

doi: 10.1016/j.nima.2014.06.004
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2013OL06      Phys.Rev. C 88, 044306 (2013)

B.Olaizola, L.M.Fraile, H.Mach, A.Aprahamian, J.A.Briz, J.Cal-Gonzalez, D.Ghita, U.Koster, W.Kurcewicz, S.R.Lesher, D.Pauwels, E.Picado, A.Poves, D.Radulov, G.S.Simpson, J.M.Udias

β- decay of 65Mn to 65Fe

RADIOACTIVITY 65Mn(β-), (β-n)[from U(p, X), E=1.4 GeV, RILIS]; measured Eγ, Iγ, Eβ, βγ-, βγγ-, γγ-coin, βγγ(t), half-life of 65Mn ground state, half-lives of 65Fe levels by fast timing, β-delayed neutron emission probability Pn at ISOLDE, CERN facility. 65Fe; deduced levels, isomer, J, π, multipolarity, B(M1), B(E1), B(E2), β feedings, logft. 64Fe, 64Co, 65mFe, 65Ni(β-); measured Eγ, Iγ of selected γ rays to deduce ground state β feeding in the decay of 65Mn to 65Fe. Comparison with shell-model calculations. 64Fe; deduced levels populated by β-n decay mode. Systematics of energies and B(E2) values of first 2+ states in Z=24, 26, 28, N=34-46 nuclei.

doi: 10.1103/PhysRevC.88.044306
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2012AL11      Phys.Rev. C 86, 025801 (2012); Pub.Note. Phys.Rev. C 86, 029901 (2012)

S.Almaraz-Calderon, W.P.Tan, A.Aprahamian, B.Bucher, A.Roberts, M.Wiescher, C.R.Brune, T.N.Massey, N.Ozkan, R.T.Guray, H.Mach

Level structure of 18Ne and its importance in the 14O(α, p)17F reaction rate

NUCLEAR REACTIONS 16O(3He, n), E=15 MeV; measured neutron and charged particle spectra, (particle)n-coin, neutron time-of-flight spectrum, p(θ), branching ratios for proton, 2p and α decays of excited states. 18Ne; deduced levels, resonances, J, π, decay modes, widths. 14,16O, 17F; populated g.s. from p, 2p and α decays of 18Ne resonances, and first excited state in 17F from p decay of 18Ne resonances. 14O(α, p)17F, T=0.1-5 GK; calculated reaction rates of astrophysical interest for Hot CNO cycles and their breakout paths towards the rp process. Comparison with previous studies.

doi: 10.1103/PhysRevC.86.025801
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2011WI09      Phys.Rev. C 84, 014329 (2011); Pub.Note JOUR PRVCA 84 029903 (2011)

K.Wimmer, U.Koster, P.Hoff, Th.Kroll, R.Krucken, R.Lutter, H.Mach, Th.Morgan, S.Sarkar, M.Saha-Sarkar, W.Schwerdtfeger, P.C.Srivastava, P.G.Thirolf, P.Van Isacker

Identification of the slow E3 transition 136Csm136Cs with conversion electrons

NUCLEAR REACTIONS U(p, X)136mCs, E=1.4 GeV; measured Eγ, Iγ, E(ce), I(ce), γ(ce)-coin, isomer half-life, conversion coefficients. 136Cs; deduced levels, J, π, multipolarity, level scheme of isomer decay, B(E3), B(M4). Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.84.014329
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2010RU09      Eur.Phys.J. A 45, 1 (2010)

E.Ruchowska, W.A.Plociennik, H.Mach, K.Gulda, B.Fogelberg, H.Gausemel, L.M.Fraile, W.Kurcewicz, K.Mezilev, M.Sanchez-Vega

Quenching of the E1 strength in 149Nd

RADIOACTIVITY 149Pr(β-) [from 235U(n, F), E=thermal and subsequent decays]; measured Eγ, Iγ(t), γγ-coin, βγ-coin. 149Nd; deduced levels, J , π, isomeric transition, T1/2, band structure, B(E1), nuclear dipole moment; calculated deformation.

doi: 10.1140/epja/i2010-10979-9
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2010TA17      Nucl.Phys. A834, 679c (2010)

W.P.Tan, S.Almaraz, A.Aprahamian, B.Bucher, J.Gorres, H.Mach, M.Wiescher, C.Brune, Z.Heinen, T.Massey

α-Induced Reaction Rates for Accreting Compact Stars

NUCLEAR REACTIONS 16O, 28Si(3He, n), E=15 MeV; measured ToF neutron σ(E). 18Ne, 30S; deduced energies of levels.

doi: 10.1016/j.nuclphysa.2010.01.123
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2009MA22      Acta Phys.Pol. B40, 477 (2009)

H.Mach, A.-M.Baluyut, E.Ruchowska, U.Koster, L.M.Fraile, R.Boutami, H.Bradley, N.Braun, C.Fransen, J.Jolie, J.Nyberg, V.Ugryumov

Structure of Heavy Fe Nuclei at the Point of Transition at N ∼ 37

RADIOACTIVITY 63Mn(β-);measured Eγ, Iγ;deduced level scheme, Jπ, T1/2, B(M1).


2009SC11      Phys.Rev.Lett. 103, 012501 (2009)

W.Schwerdtfeger, P.G.Thirolf, K.Wimmer, D.Habs, H.Mach, T.R.Rodriguez, V.Bildstein, J.L.Egido, L.M.Fraile, R.Gernhauser, R.Hertenberger, K.Heyde, P.Hoff, H.Hubel, U.Koster, T.Kroll, R.Krucken, R.Lutter, T.Morgan, P.Ring

Shape Coexistence Near Neutron Number N = 20: First Identification of the E0 Decay from the Deformed First Excited Jπ = 0+ State in 30Mg

RADIOACTIVITY 30Na(β-); measured Eγ, Iγ; deduced J, π, monopole strength, partial E0 lifetime. Comparison with beyond mean field calculations.

doi: 10.1103/PhysRevLett.103.012501
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2008BO29      Nucl.Phys. A811, 244 (2008)

R.Boutami, M.J.G.Borge, H.Mach, W.Kurcewicz, L.M.Fraile, K.Gulda, A.J.Aas, L.M.Garcia-Raffi, G.Lovhoiden, T.Martinez, B.Rubio, J.L.Tain, O.Tengblad

Nuclear structure of 231Ac

RADIOACTIVITY 231Fr, 231Ra(β-) [from 238U(p, X), E=1 GeV and subsequent mass separation]; measured Eγ, Iγ, Eβ, γγ-, βγ-coin, T1/2; deduced log ft. 231Ac deduced levels, J, π, ICC, multipolarities, B(E1), B(M1), T1/2. Mini-orange spectrometer. Advanced Time Delayed βγγ(t) method.

doi: 10.1016/j.nuclphysa.2008.08.005
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2008SA05      Eur.Phys.J. A 35, 159 (2008)

M.Sanchez-Vega, H.Mach, R.B.E.Taylor, B.Fogelberg, A.Lindroth, A.J.Aas, P.Dendooven, A.Honkanen, M.Huhta, G.Lhersonneau, M.Oinonen, J.M.Parmonen, H.Penttila, J.Aysto, J.R.Persson, J.Kurpeta

Studies of quadrupole collectivity in the γ-soft 106Ru

RADIOACTIVITY 106Tc(β+) [from 238U(p, F), E=25 MeV]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2, B(E2) using advanced time-delayed method. 106Ru deduced levels, J, π, T1/2. Comparison with various models.

doi: 10.1140/epja/i2007-10530-3
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2008SM01      Phys.Rev. C 77, 014309 (2008)

D.L.Smith, H.Mach, H.Penttila, H.Bradley, J.Aysto, V.-V.Elomaa, T.Eronen, D.G.Ghita, J.Hakala, M.Hauth, A.Jokinen, P.Karvonen, T.Kessler, W.Kurcewicz, H.Lehmann, I.D.Moore, J.Nyberg, S.Rahaman, J.Rissanen, J.Ronkainen, P.Ronkanen, A.Saastamoinen, T.Sonoda, O.Steczkiewicz, C.Weber

Lifetime measurements of the negative-parity 7- and 8- states in 122Cd

RADIOACTIVITY 122Ag(β-) [from 238U(p, F), E=50 MeV]; measured Eγ, Iγ, γγ-coin, lifetimes. 122Cd; deduced levels, B(M1), B(E1), B(E2), half-lives using Advanced Time-delayed βγγ(t) method. Comparison with 124Sn, 126Te.

doi: 10.1103/PhysRevC.77.014309
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2007BO48      Eur.Phys.J. Special Topics 150, 87 (2007)

R.Boutami, M.J.G.Borge, H.Mach, L.M.Fraile, K.Gulda, A.J.Aas, L.M.Garcia-Raffi, E.Hagebo, W.Kurcewicz, G.Lovhoiden, T.Martinez, B.Rubio, J.L.Tain, O.Tengblad

Structure of 231Ac: Measurements of level half-lives

RADIOACTIVITY 231Ra(β-) [from U(p, X), E=1 GeV]; measured Eγ, Iγ, γγ-coin, conversion electrons. 231Ac; deduced level energies, lifetimes.

doi: 10.1140/epjst/e2007-00273-9
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2007FO02      Phys.Rev. C 75, 054308 (2007)

B.Fogelberg, K.A.Mezilev, V.I.Isakov, K.I.Erokhina, H.Mach, E.Ramstrom, H.Gausemel

Neutron separation energies at N = 83 and the isomer position in 136I

RADIOACTIVITY 135,136Te(β-); measured Eβ, Eγ, βγ-coinc. Deduced β endpoint energies and mass excess.

doi: 10.1103/PhysRevC.75.054308
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2007IS05      Phys.Atomic Nuclei 70, 818 (2007)

V.I.Isakov, K.I.Erokhina, H.Mach, B.Fogelberg, A.Korgul, K.A.Mezilev, E.Ramstrom

Isomeric and Two-Quasiparticle States in the Neutron-Excess Odd-Odd Nucleus 134Sb

NUCLEAR STRUCTURE 134Sb; calculated level energies and B(E2) using random phase approximation.

doi: 10.1134/S1063778807050031
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2007KO66      Eur.Phys.J. A 32, 25 (2007)

A.Korgul, H.Mach, B.A.Brown, A.Covello, A.Gargano, B.Fogelberg, W.Kurcewicz, E.Werner-Malento, R.Orlandi, M.Sawicka

On the unusual properties of the 282 keV state in 135Sb

RADIOACTIVITY 135Sn(β-) [from 235U(n, X), E=thermal]; measured Eγ, Iγ, βγ, γγ-coinc. 135Sb deduced T1/2, B(M1), B(E2).

doi: 10.1140/epja/i2007-10363-0
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2007MA40      Acta Phys.Pol. B38, 1213 (2007)

H.Mach, L.M.Fraile, O.Arndt, A.Blazhev, N.Boelaert, M.J.G.Borge, R.Boutami, H.Bradley, N.Braun, B.A.Brown, P.A.Butler, A.Covello, Z.Dlouhy, C.Fransen, H.O.U.Fynbo, A.Gargano, Ch.Hinke, P.Hoff, A.Joinet, A.Jokinen, J.Jolie, U.Koster, A.Korgul, K.-L.Kratz, T.Kroll, W.Kurcewicz, J.Nyberg, E.-M.Reillo, E.Ruchowska, W.Schwerdtfeger, G.S.Simpson, M.Stanoiu, O.Tengblad, P.G.Thirolf, W.B.Walters

The Single-Particle and Collective Features in the Nuclei Just Above 132Sn

RADIOACTIVITY 136Sn(β-); measured Eγ, Iγ, γγ-coinc. 135Sb deduced levels, B(E2).


2007WH01      Phys.Rev. C 76, 057303 (2007)

E.R.White, H.Mach, L.M.Fraile, U.Koster, O.Arndt, A.Blazhev, N.Boelaert, M.J.G.Borge, R.Boutami, H.Bradley, N.Braun, Z.Dlouhy, C.Fransen, H.O.U.Fynbo, Ch.Hinke, P.Hoff, A.Joinet, A.Jokinen, J.Jolie, A.Korgul, K.-L.Kratz, T.Kroll, W.Kurcewicz, J.Nyberg, E.-M.Reillo, E.Ruchowska, W.Schwerdtfeger, G.S.Simpson, M.Stanoiu, O.Tengblad, P.G.Thirolf, V.Ugryumov, W.B.Walters

Lifetime measurement of the 167.1 keV state in 41Ar

RADIOACTIVITY 41Cl(β-) [from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, γγ-coin, βγγ-coin, βγ(t). 41Ar; measured half-lives of isomeric states; deduced levels, J, π, multipolarities, B(E2), B(M1).

doi: 10.1103/PhysRevC.76.057303
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2006BO33      Phys.Scr. T125, 180 (2006)

M.J.T.Borge, R.Boutami, L.M.Fraile, K.Gulda, W.Kurcewicz, H.Mach, T.Martinez, B.Rubio, O.Tengblad, and for the IS322 Collaboration

Beta decay half-life of 231Ra

RADIOACTIVITY 231Ra(β-) [from U(p, X)]; measured Eγ, Iγ, T1/2.

doi: 10.1088/0031-8949/2006/T125/040
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2006GR19      Eur.Phys.J. A 27, Supplement 1, 257 (2006)

H.Grawe, A.Blazhev, M.Gorska, R.Grzywacz, H.Mach, I.Mukha

Nuclear structure far off stability - Implications for nuclear astrophysics

doi: 10.1140/epja/i2006-08-040-7
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2006RU07      Phys.Rev. C 73, 044326 (2006)

E.Ruchowska, W.A.Plociennik, J.Zylicz, H.Mach, J.Kvasil, A.Algora, N.Amzal, T.Back, M.G.Borge, R.Boutami, P.A.Butler, J.Cederkall, B.Cederwall, B.Fogelberg, L.M.Fraile, H.O.U.Fynbo, E.Hagebo, P.Hoff, H.Gausemel, A.Jungclaus, R.Kaczarowski, A.Kerek, W.Kurcewicz, K.Lagergren, E.Nacher, B.Rubio, A.Syntfeld, O.Tengblad, A.A.Wasilewski, L.Weissman

Nuclear structure of 229Th

RADIOACTIVITY 229Ac(β-) [from 238U(p, X) and subsequent decay]; measured prompt and delayed Eγ, Iγ, βγ-, γγ-coin. 229Th deduced levels, J, π, T1/2, transition probabilities, rotational band features. Potential energy surface calculations, quasiparticle-plus-phonon model calculations.

doi: 10.1103/PhysRevC.73.044326
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2005CA02      Eur.Phys.J. A 23, 201 (2005)

M.Caamano, P.M.Walker, P.H.Regan, M.Pfutzner, Zs.Podolyak, J.Gerl, M.Hellstrom, P.Mayet, M.N.Mineva, A.Aprahamian, J.Benlliure, A.M.Bruce, P.A.Butler, D.Cortina Gil, D.M.Cullen, J.Doring, T.Enqvist, C.Fox, J.Garces Narro, H.Geissel, W.Gelletly, J.Giovinazzo, M.Gorska, H.Grawe, R.Grzywacz, A.Kleinbohl, W.Korten, M.Lewitowicz, R.Lucas, H.Mach, C.D.O'Leary, F.De Oliveira, C.J.Pearson, F.Rejmund, M.Rejmund, M.Sawicka, H.Schaffner, C.Schlegel, K.Schmidt, K.-H.Schmidt, P.D.Stevenson, Ch.Theisen, F.Vives, D.D.Warner, C.Wheldon, H.J.Wollersheim, S.Wooding, F.Xu, O.Yordanov

Isomers in neutron-rich A ≈ 190 nuclides from 208Pb fragmentation

NUCLEAR REACTIONS Be(208Pb, X), E=1 GeV/nucleon; measured fragments isotopic yields, delayed Eγ, γγ-, (particle)γ-coin; deduced isomer production ratios.

RADIOACTIVITY 188Ta, 190W, 192,193Re, 195Os, 197,198Ir, 200,201,202Pt, 203Au(IT) [from Be(208Pb, X)]; measured Eγ, Iγ, γγ-coin, T1/2. 188Ta, 190W, 192,193Re, 195Os, 197,198Ir, 200,201,202Pt, 203Au deduced transitions. 190W, 200,201,202Pt deduced levels, J, π. 174,175Er, 185Hf, 191,194Re, 199Ir(IT) [from Be(208Pb, X)]; measured Eγ, Iγ.

doi: 10.1140/epja/i2004-10079-7
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2005GI17      Phys.Rev. C 72, 044308 (2005)

A.Giannatiempo, A.Perego, P.Sona, A.Nannini, H.Mach, B.Fogelberg, M.J.G.Borge, O.Tengblad, L.M.Fraile, A.J.Aas, K.Gulda

Spectroscopy and lifetime measurements of states in 76Kr populated in 76Rb decay

RADIOACTIVITY 76Rb(β+), (EC) [from Nb(p, X)]; measured Eγ, Iγ, E(ce), I(ce), γγ-, βγ-coin; deduced log ft. 76Kr deduced levels J, π, T1/2, ICC. 76Rb deduced ground state J, π.

doi: 10.1103/PhysRevC.72.044308
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2005IS13      Yad.Fiz. 68, 1545 (2005); Phys.Atomic Nuclei 68, 1487 (2005)

V.I.Isakov, H.Mach, B.Fogelberg, K.I.Erokhina, A.J.Aas, E.Hagebo

Structure of States and Transition Rates in the Even-Even N = 82 Nucleus 136Xe

NUCLEAR STRUCTURE 136Xe; calculated levels, J, π, B(M1), B(E2). Quasiparticle RPA and shell model methods.

doi: 10.1134/1.2053332
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2005KO40      Eur.Phys.J. A 25, Supplement 1, 123 (2005)

A.Korgul, H.Mach, B.A.Brown, A.Covello, A.Gargano, B.Fogelberg, R.Schuber, W.Kurcewicz, E.Werner-Malento, R.Orlandi, M.Sawicka

On the structure of the anomalously low-lying 5/2+ state of 135Sb

RADIOACTIVITY 135Sn(β-) [from 235U(n, F), E=thermal]; measured Eγ, Iγ, βγ-coin following decay of mass-separated sources. 135Sb deduced levels, J, π, T1/2, B(M1), configurations. Comparison with shell model calculations.

doi: 10.1140/epjad/i2005-06-040-2
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2005MA81      J.Phys.(London) G31, S1421 (2005)

H.Mach, P.M.Walker, R.Julin, M.Leino, S.Juutinen, M.Stanoiu, Zs.Podolyak, R.Wood, A.M.Bruce, T.Back, J.A.Cameron, B.Cederwall, J.Ekman, B.Fogelberg, P.T.Greenlees, M.Hellstrom, P.Jones, W.Klamra, K.Lagergren, A.-P.Leppanen, P.Nieminen, R.Orlandi, J.Pakarinen, P.Rahkila, D.Rudolph, G.Simpson, J.Uusitalo, C.Wheldon

Application of ultra-fast timing techniques to the study of exotic and weakly produced nuclei

RADIOACTIVITY 32Na, 80Ga(β-); measured Eγ, Iγ, γγ-, βγ-coin. 32Mg, 80Ge levels deduced T1/2. Ultra-fast timing techniques.

NUCLEAR REACTIONS 40Ca(14N, n2p), E not given; measured Eγ, Iγ, γγ-coin. 51Mn levels deduced T1/2. Ultra-fast timing techniques.

NUCLEAR STRUCTURE 48V; analyzed data; deduced levels T1/2. Ultra-fast timing techniques.

doi: 10.1088/0954-3899/31/10/007
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2005MA96      Eur.Phys.J. A 25, Supplement 1, 105 (2005)

H.Mach, L.M.Fraile, O.Tengblad, R.Boutami, C.Jollet, W.A.Plociennik, D.T.Yordanov, M.Stanoiu, M.J.G.Borge, P.A.Butler, J.Cederkall, Ph.Dessagne, B.Fogelberg, H.Fynbo, P.Hoff, A.Jokinen, A.Korgul, U.Koster, W.Kurcewicz, F.Marechal, T.Motobayashi, J.Mrazek, G.Neyens, T.Nilsson, S.Pedersen, A.Poves, B.Rubio, E.Ruchowska, and the ISOLDE Collaboration

New structure information on 30Mg, 31Mg and 32Mg

RADIOACTIVITY 30,31,32Na(β-); 31,32Na(β-n); measured Eγ, Iγ, γγ-, βγ-coin. 30,31,32Mg deduced levels T1/2. Ultra-fast timing techniques.

doi: 10.1140/epjad/i2005-06-159-0
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2005SY01      Eur.Phys.J. A 23, 481 (2005)

A.Syntfeld, H.Mach, W.Kurcewicz, B.Fogelberg, N.Amzal, J.Galy, K.Gulda, A.Korgul, A.Lindroth, W.A.Plociennik, M.Sanchez-Vega, W.Urban

The β-decay of 147Cs to 147Ba

RADIOACTIVITY 147Cs(β-) [from 235U(n, F)]; measured β-delayed Eγ, Iγ, γγ-, (X-ray)γ-coin, T1/2. 147Ba deduced levels, J, π, T1/2, B(M1), B(E2).

doi: 10.1140/epja/i2004-10112-y
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2004FO06      Phys.Rev. C 70, 034312 (2004)

B.Fogelberg, H.Gausemel, K.A.Mezilev, P.Hoff, H.Mach, M.Sanchez-Vega, A.Lindroth, E.Ramstrom, J.Genevey, J.A.Pinston, M.Rejmund

Decays of 131In, 131Sn, and the position of the h11/2 neutron hole state

RADIOACTIVITY 131mSn, 131mIn(β-); measured Eγ, Eβ, βγ-coin; deduced Qβ, logft. 131In, 131Sn deduced levels, J, π. Mass-separated sources.

doi: 10.1103/PhysRevC.70.034312
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2004GA24      Phys.Rev. C 69, 054307 (2004)

H.Gausemel, B.Fogelberg, T.Engeland, M.Hjorth-Jensen, P.Hoff, H.Mach, K.A.Mezilev, J.P.Omtvedt

Decay of 127In and 129In

RADIOACTIVITY 127,129In(β-) [from 235U(n, F)]; measured Eβ, Eγ, γγ-, βγ-coin following ground-state and isomer decays. 127,129In deduced isomeric states energies, T1/2. 127,129Sn deduced levels, J, π, isomers T1/2. Comparison with shell model predictions.

doi: 10.1103/PhysRevC.69.054307
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2004GA44      Phys.Rev. C 70, 037301 (2004)

H.Gausemel, K.A.Mezilev, B.Fogelberg, P.Hoff, H.Mach, E.Ramstrom

Decay properties and Qβ value of 82As

RADIOACTIVITY 82,82mAs(β-) [from 235U(n, F)]; measured Eγ, Eβ, γγ-, βγ-coin; deduced log ft, Qβ. 82Se levels deduced β-feeding intensities.

doi: 10.1103/PhysRevC.70.037301
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2004GE11      Eur.Phys.J. A 20, 93 (2004)

G.Georgiev, G.Neyens, M.Hass, D.L.Balabanski, C.Bingham, C.Borcea, N.Coulier, R.Coussement, J.M.Daugas, G.de France, M.Gorska, H.Grawe, R.Grzywacz, M.Lewitowicz, H.Mach, I.Matea, F.de Oliveira Santos, R.D.Page, M.Pfutzner, Yu.E.Penionzhkevich, Z.Podolyak, P.H.Regan, K.Rykaczewski, M.Sawicka, N.A.Smirnova, Yu.Sobolev, M.Stanoiu, S.Teughels, K.Vyvey

g-factors of isomeric states in the neutron-rich nuclei

RADIOACTIVITY 67Ni, 69Cu(IT) [from Be(76Ge, X)]; measured Eγ, Iγ(θ, H, t). 67Ni, 69Cu deduced isomeric states g factors. Time-dependent perturbed angular distribution method.

doi: 10.1140/epja/i2002-10328-9
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2004IS07      Eur.Phys.J. A 20, 397 (2004)

V.I.Isakov, K.A.Mezilev, K.I.Erokhina, B.Fogelberg, H.Mach, E.Ramstrom

On the magnitude of single-particle proton and neutron separation energies in the chains of isotopes and isotones near closed shells

NUCLEAR STRUCTURE Z=49-92; calculated one-nucleon separation energies near closed shells. 78Ni; calculated single-particle energies. 56,78Ni; calculated particle densities.

doi: 10.1140/epja/i2003-10168-1
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2004IS14      Yad.Fiz. 67, 1850 (2004); Phys.Atomic Nuclei 67, 1823 (2004)

V.I.Isakov, K.I.Erokhina, B.Fogelberg, H.Mach, M.Sanchez-Vega

On the Isotopic Dependence of the Mean Spin-Orbit Field in Nuclei

NUCLEAR STRUCTURE 48Ca, 132Sn, 208Pb; calculated single-particle level energies, isotopic dependence of mean spin-orbit field.

NUCLEAR REACTIONS 48Ca(polarized p, n), E not given; calculated analyzing power, role of spin-orbit term, absorption effects. Comparison with data.

doi: 10.1134/1.1811185
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2004SY01      Eur.Phys.J. A 20, 359 (2004)

A.Syntfeld, H.Mach, W.Plociennik, W.Kurcewicz, B.Fogelberg

First structure information on the exotic 149La from the β--decay of 149Ba

RADIOACTIVITY 149Ba(β-) [from 235U(n, F)]; measured Eγ, Iγ, γγ-, (X-ray)γ-coin. 149La deduced levels, J, π, configurations, deformation. Mass separator.

doi: 10.1140/epja/i2003-10192-1
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2003MA50      Nucl.Phys. A719, 213c (2003)

H.Mach, M.Lewitowicz, M.Stanoiu, F.Becker, J.Blomqvist, M.J.G.Borge, R.Boutami, B.Cederwall, Z.Dlouhy, B.Fogelberg, L.M.Fraile, G.Georgiev, H.Grawe, R.Grzywacz, P.I.Johansson, W.Klamra, S.Lukyanov, M.Mineva, J.Mrazek, G.Neyens, F.de Oliveira-Santos, M.Pfutzner, Yu.E.Penionzhkevich, E.Ramstrom, M.Sawicka

Coupling of valence particles/holes to 68, 70Ni studied via measurements of the B(E2) strength in 67, 69, 70Ni and 71Cu

NUCLEAR REACTIONS 9Be(76Ge, X)67Ni/69Ni/70Ni/71Cu, E=60 MeV/nucleon; measured prompt and delayed Eγ, Iγ, γγ-, (fragment)γ-coin. 67,69,70Ni, 71Cu deduced levels T1/2, B(E2). Comparison with model predictions.

doi: 10.1016/S0375-9474(03)00920-5
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2003PO10      Nucl.Instrum.Methods Phys.Res. A511, 354 (2003)

Zs.Podolyak, P.M.Walker, H.Mach, G.de France, G.Sletten, F.Azaiez, J.M.Casandjian, B.Cederwall, D.M.Cullen, Zs.Dombradi, G.D.Dracoulis, L.M.Fraile, S.Franchoo, H.Fynbo, M.Gorska, Y.Kopatch, G.J.Lane, S.Mandal, L.Milechina, J.Molnar, C.O'Leary, W.Plociennik, V.Pucknell, P.Raddon, N.Redon, E.Ruchowska, M.Stanoiu, O.Tengblad, C.Wheldon, R.Wood

γ-ray spectroscopy with a 8He beam

NUCLEAR REACTIONS 208Pb(8He, 4n), E=28 MeV; measured Eγ, Iγ, γγ-coin. 212Po deduced transitions. Exogam array.

doi: 10.1016/S0168-9002(03)01951-X
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2003SA02      Eur.Phys.J. A 16, 51 (2003)

M.Sawicka, J.M.Daugas, H.Grawe, S.Cwiok, D.L.Balabanski, R.Beraud, C.Bingham, C.Borcea, M.La Commara, G.de France, G.Georgiev, M.Gorska, R.Grzywacz, M.Hass, M.Hellstrom, Z.Janas, M.Lewitowicz, H.Mach, I.Matea, G.Neyens, C.O'Leary, F.de Oliveira Santos, R.D.Page, M.Pfutzner, Zs.Podolyak, K.Rykaczewski, M.Stanoiu, J.Zylicz

Isomeric decay of 67Fe -- Evidence for deformation

RADIOACTIVITY 67mFe(IT) [from 9Be(76Ge, X)]; measured Eγ, Iγ, T1/2. 67Fe deduced isomeric level energy, possible J, π, deformation, configuration. Mass separator, comparisons with model predictions.

doi: 10.1140/epja/i2002-10073-1
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2003SA40      Phys.Rev. C 68, 044304 (2003)

M.Sawicka, R.Grzywacz, I.Matea, H.Grawe, M.Pfutzner, J.M.Daugas, M.Lewitowicz, D.L.Balabanski, F.Becker, G.Belier, C.Bingham, C.Borcea, E.Bouchez, A.Buta, M.La Commara, E.Dragulescu, G.de France, G.Georgiev, J.Giovinazzo, M.Gorska, F.Hammache, M.Hass, M.Hellstrom, F.Ibrahim, Z.Janas, H.Mach, P.Mayet, V.Meot, F.Negoita, G.Neyens, F.de Oliveira Santos, R.D.Page, O.Perru, Zs.Podolyak, O.Roig, K.P.Rykaczewski, M.G.Saint-Laurent, J.E.Sauvestre, O.Sorlin, M.Stanoiu, I.Stefan, C.Stodel, Ch.Theisen, D.Verney, J.Zylicz

Low energy levels in 72Ni

RADIOACTIVITY 70,72Co(β-) [from Ta(86Kr, X)]; measured β-delayed Eγ, Iγ, βγ-coin, T1/2; deduced log ft. 70,72Ni deduced levels, J, π. Comparison with model predictions.

doi: 10.1103/PhysRevC.68.044304
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2003SY01      Phys.Rev. C 68, 024304 (2003)

A.Syntfeld, H.Mach, W.Kurcewicz, B.Fogelberg, W.Plociennik, E.Ruchowska

Search for quenching of the electric dipole moment D0 in 149Ce

RADIOACTIVITY 149La(β-) [from 235U(n, F)]; measured β-delayed Eγ, Iγ(t). 149Ce deduced levels T1/2, B(E1), electric dipole moments. Mass-separated source.

doi: 10.1103/PhysRevC.68.024304
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2002GE16      J.Phys.(London) G28, 2993 (2002)

G.Georgiev, G.Neyens, M.Hass, D.L.Balabanski, C.Bingham, C.Borcea, N.Coulier, R.Coussement, J.M.Daugas, G.De France, F.de Oliveira Santos, M.Gorska, H.Grawe, R.Grzywacz, M.Lewitowicz, H.Mach, I.Matea, R.D.Page, M.Pfutzner, Yu.E.Penionzhkevich, Z.Podolyak, P.H.Regan, K.Rykaczewski, M.Sawicka, N.A.Smirnova, Y.G.Sobolev, M.Stanoiu, S.Teughels, K.Vyvey

g factor measurements of μs isomeric states in neutron-rich nuclei around 68Ni produced in projectile-fragmentation reactions

NUCLEAR REACTIONS 9Be(76Ge, X)67mNi/69mCu, E=61.4 MeV/nucleon; measured Eγ, Iγ(θ, H, t) following isomeric state decay. 67Ni, 69Cu levels deduced g factors. Time-dependent perturbed angular distribution method.

doi: 10.1088/0954-3899/28/12/308
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2002GU15      Nucl.Phys. A703, 45 (2002)

K.Gulda, W.Kurcewicz, A.J.Aas, M.J.G.Borge, D.G.Burke, B.Fogelberg, I.S.Grant, E.Hagebo, N.Kaffrell, J.Kvasil, G.Lovhoiden, H.Mach, A.Mackova, T.Martinez, G.Nyman, B.Rubio, J.L.Tain, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

The Nuclear Structure of 229Th

RADIOACTIVITY 229Ac(β-) [from 232Th(p, 4p) and 238U(p, 6p4n) and subsequent decay]; measured Eγ, Iγ, E(ce), I(ce), T1/2, βγ(t), (ce)γ-, γγ-coin. 229Th deduced levels, J, π, ICC, multipolarities, rotational bands, B(E1), B(E2), B(M1), dipole moments. Mini-orange spectrometer, advanced fast-timing techniques. Comparison with quasiparticle-phonon model predictions.

doi: 10.1016/S0375-9474(01)01456-7
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2002IS04      Eur.Phys.J. A 14, 29 (2002)

V.I.Isakov, K.I.Erokhina, H.Mach, M.Sanchez-Vega, B.Fogelberg

On the Difference between Proton and Neutron Spin-Orbit Splittings in Nuclei

NUCLEAR STRUCTURE 16O, 40Ca, 100,132Sn, 208Pb; calculated single-particle level energies, isotopic dependence of spin-orbit splitting. Several models compared.

doi: 10.1007/s10050-002-8786-1
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2002KO53      Eur.Phys.J. A 15, 181 (2002)

A.Korgul, H.Mach, B.Fogelberg, W.Urban, W.Kurcewicz, T.Rzaca-Urban, P.Hoff, H.Gausemel, J.Galy, J.L.Durell, W.R.Phillips, A.G.Smith, B.J.Varley, N.Schulz, I.Ahmad, L.R.Morss, M.Gorska, V.I.Isakov, K.I.Erokhina, J.Blomqvist, F.Andreozzi, F.Coraggio, A.Covello, A.Gargano

The neutron and proton two-particle nucleus 134Sb: New low-spin states observed in the decay of 134Sn and an estimate of the energy of the 7- isomer

RADIOACTIVITY 134Sn(β-) [from 238U(n, F)]; measured Eγ, Iγ, γγ-, βγ-coin. 134Sb deduced levels, possible J, π, configurations. Mass separator. Comparisons with model predictions.

doi: 10.1140/epja/i2001-10250-8
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2002NE07      Nucl.Phys. A701, 403c (2002)

G.Neyens, G.Georgiev, R.Grzywacz, M.Hass, F.de Oliveira Santos, M.Lewitowicz, D.L.Balabanski, C.Bingham, C.Borcea, N.Coulier, R.Coussement, J.M.Daugas, G.De France, G.Goldring, M.Gorska, H.Grawe, C.O'Leary, I.Macovei, H.Mach, R.Page, M.Pfutzner, Yu.-E.Penionzhkevich, Z.Podolyak, P.H.Regan, K.Rykaczewski, M.Sawicka, N.A.Smirnova, Yu.Sobolev, S.Teughels, K.Vyvey

g-Factors of Isomers Around N ≈ 40, Z ≈ 28 from Time-Dependent Larmor Precession on Spin-Aligned Projectile-Like Fragments

RADIOACTIVITY 69mCu(IT) [from 9Be(76Ge, X)]; measured Eγ, Iγ(θ, H, t). 69Cu levels deduced g factors. Time differential perturbed angular distribution method.

doi: 10.1016/S0375-9474(01)01618-9
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2002PF01      Phys.Rev. C65, 064604 (2002)

M.Pfutzner, P.H.Regan, P.M.Walker, M.Caamano, J.Gerl, M.Hellstrom, P.Mayet, K.-H.Schmidt, Zs.Podolyak, M.N.Mineva, A.Aprahamian, J.Benlliure, A.M.Bruce, P.A.Butler, D.Cortina Gil, D.M.Cullen, J.Doring, T.Enqvist, C.Fox, J.Garces Narro, H.Geissel, W.Gelletly, J.Giovinazzo, M.Gorska, H.Grawe, R.Grzywacz, A.Kleinbohl, W.Korten, M.Lewitowicz, R.Lucas, H.Mach, C.D.O'Leary, F.De Oliveira, C.J.Pearson, F.Rejmund, M.Rejmund, M.Sawicka, H.Schaffner, Ch.Schlegel, K.Schmidt, Ch.Theisen, F.Vives, D.D.Warner, C.Wheldon, H.J.Wollersheim, S.Wooding

Angular Momentum Population in the Fragmentation of 208Pb at 1 GeV/nucleon

NUCLEAR REACTIONS Be(208Pb, X), E=1 GeV/nucleon; measured fragment yields, delayed Eγ, Iγ, (fragment)γ-coin; deduced isomeric ratios. 174,175,176Hf, 175,176,179,180Ta, 180,181,182W, 181,185Re deduced transitions, isomers T1/2, angular momentum distributions. Fragment separator.

doi: 10.1103/PhysRevC.65.064604
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2002SH08      Phys.Rev. C65, 034313 (2002)

J.Shergur, B.A.Brown, V.Fedoseyev, U.Koster, K.L.Kratz, D.Seweryniak, W.B.Walters, A.Wohr, D.Fedorov, M.Hannawald, M.Hjorth-Jensen, V.Mishin, B.Pfeiffer, J.J.Ressler, H.O.U.Fynbo, P.Hoff, H.Mach, T.Nilsson, K.Wilhelmsen-Rolander, H.Simon, A.Bickley, and the ISOLDE Collaboration

β-Decay Studies of 135-137Sn using Selective Resonance Laser Ionization Techniques

RADIOACTIVITY 135,136,137Sn(β-), (β-n) [from U(p, X)]; measured β-delayed neutron spectra, Eγ, Iγ, γγ-coin, T1/2; deduced delayed neutron emission probabilities. 135Sb deduced levels, J, π, β-branching ratio. Resonance laser ionization, mass separator.

RADIOACTIVITY 137Sb(β-), (β-n); estimated T1/2 and %P(n) from extrapolation.

doi: 10.1103/PhysRevC.65.034313
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2002SY01      Nucl.Phys. A710, 221 (2002)

A.Syntfeld, H.Mach, R.Kaczarowski, W.Kurcewicz, W.Plociennik, W.Urban, B.Fogelberg, P.Hoff

Study of 149Ce levels populated in the β- decay of 149La and signature splitting of the neutron i13/2 band

RADIOACTIVITY 149La(β-) [from 235U(n, F)]; measured Eγ, Iγ, γγ-coin. 149Ce deduced levels, J, π, ICC, rotational bands, signature splitting. Comparison with model predictions.

doi: 10.1016/S0375-9474(02)01132-6
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2001BO34      Nucl.Phys. A690, 227c (2001)

M.J.G.Borge, L.M.Fraile, W.Kurcewicz, H.Mach, for the IS322 Collaboration

Octupole Correlations Beyond the Island of Deformation Centered at A = 225

RADIOACTIVITY 231Fr(β-); analyzed data. 231Ra deduced transitions B(E1), octupole correlation features. Level systematics in neighboring nuclides discussed.

doi: 10.1016/S0375-9474(01)01046-6
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2001ER09      Part. and Nucl., Lett. 107, 5 (2001)

K.I.Erokhina, V.I.Isakov, B.Fogelberg, H.Mach

On the Properties of the N = 82 Even-Even Nuclei

NUCLEAR STRUCTURE 132Sn, 134Te, 136Xe, 138Ba, 140Ce, 142Nd, 144Sm, 146Gd; calculated levels, J, π, transitions B(E2), B(E3), B(E4). RPA approach, comparisons with data.


2001FR05      Nucl.Phys. A686, 71 (2001)

L.M.Fraile, M.J.G.Borge, H.Mach, R.Boutami, A.J.Aas, B.Fogelberg, L.M.Garcia-Raffi, I.S.Grant, K.Gulda, E.Hagebo, W.Kurcewicz, J.Kvasil, M.J.Lopez, G.Lovhoiden, T.Martinez, B.Rubio, J.L.Tain, O.Tengblad, and the ISOLDE Collaboration

Persistence of Octupole Correlations in 231Ra

RADIOACTIVITY 231Fr(β-) [from 238U(p, 2n6p)]; measured Eγ, Iγ, E(ce), I(ce), γγ-, (ce)γ-coin, T1/2. 231Ra deduced levels, J, π, ICC, multipolarities, rotational bands, B(E1), B(E2). Quasiparticle-plus-phonon model, BaF2 detectors, mini-orange spectrometer.

doi: 10.1016/S0375-9474(00)00572-8
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2001GE13      Yad.Fiz. 64, No 7, 1258 (2001); Phys.Atomic Nuclei 64, 1181 (2001)

G.Georgiev, D.L.Balabanski, C.Bingham, C.Borcea, N.Coulier, R.Coussement, J.M.Daugas, G.De France, F.de Oliveira Santos, G.Goldring, M.Gorska, H.Grawe, R.Grzywacz, M.Hass, C.O'Leary, M.Lewitowicz, H.Mach, I.Macovei, R.Page, M.Pfutzner, Yu.E.Penionzhkevich, Zs.Podolyak, P.H.Regan, K.Rykaczewski, M.Sawicka, N.A.Smirnova, Yu.G.Sobolev, M.Stanoiu, S.Teughels, K.Vyvey, G.Neyens

Measurement of the g Factors of Isomers Near the Proposed N ≈ 40 Subshell Closure

NUCLEAR REACTIONS 9Be(76Ge, X)69mCu/67mNi/66mCo, E=61.4 MeV/nucleon; measured Eγ, Iγ(θ, H, t), (particle)γ-coin. 69Cu deduced transitions g factors, isomer T1/2, level configurations. Time-dependent perturbed angular correlation.

doi: 10.1134/1.1389539
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2001KA50      Acta Phys.Pol. B32, 2485 (2001)

R.Kaczarowski, W.Plociennik, A.Syntfeld, H.Mach, W.Kurcewicz, B.Fogelberg, P.Hoff

Total Routhian Surface Calculations for Neutron-Rich 149Ce

NUCLEAR STRUCTURE 149Ce; calculated total Routhian surfaces, angular momentum vs rotational frequency. Comparison with data.


2001KO45      Phys.Rev. C64, 021302 (2001)

A.Korgul, H.Mach, B.Fogelberg, W.Urban, W.Kurcewicz, V.I.Isakov

Structure Information on the r-Process Nucleus 135Sn

RADIOACTIVITY 135Sn(β-) [from 238U(n, F)]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2. 135Sb deduced levels, possible J, π. Online fission-product mass separator. Astrophysical r-process and level systematics in neighboring nuclides discussed. Comparisons with model predictions.

doi: 10.1103/PhysRevC.64.021302
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2001MA25      Acta Phys.Pol. B32, 887 (2001)

H.Mach

Advanced Nuclear Spectroscopy Near 132Sn


2001MI22      Eur.Phys.J. A 11, 9 (2001)

M.N.Mineva, M.Hellstrom, M.Bernas, J.Gerl, H.Grawe, M.Pfutzner, P.H.Regan, M.Rejmund, D.Rudolph, F.Becker, C.R.Bingham, T.Enqvist, B.Fogelberg, H.Gausemel, H.Geissel, J.Genevey, M.Gorska, R.Grzywacz, K.Hauschild, Z.Janas, I.Kojouharov, Y.Kopatch, A.Korgul, W.Korten, J.Kurcewicz, M.Lewitowicz, R.Lucas, H.Mach, S.Mandal, P.Mayet, C.Mazzocchi, J.A.Pinston, Zs.Podolyak, H.Schaffner, Ch.Schlegel, K.Schmidt, K.Summerer, H.J.Wollersheim

A New μs Isomer in 136Sb Produced in the Projectile Fission of 238U

RADIOACTIVITY 134,135Te, 136Sb(IT) [from 9Be(238U, X)]; measured Eγ, Iγ, T1/2. 136Sb deduced isomeric level J, π. Fragment separator.

NUCLEAR REACTIONS 9Be(238U, X), E=750 MeV/nucleon; measured delayed Eγ, Iγ, (fragment)γ-coin. 134,135Te, 136Sb deduced isomers T1/2. 136Sb deduced isomeric level J, π. Fragment separator.

doi: 10.1007/s100500170091
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2001SH12      Nucl.Phys. A682, 493c (2001)

J.Shergur, M.Hannawald, D.Seweryniak, H.Fynbo, U.Koester, A.Woehr, D.Fedorov, V.Fedoseyev, V.Mishin, P.Hoff, J.Ressler, A.Bickley, B.Pfeiffer, H.Simon, T.Nilsson, H.Mach, K.Wilhelmsen Rolander, H.Ravn, K.-L.Kratz, W.Walters, and the ISOLDE Collaboration

Decay of 135, 136Sn Isolated by Use of a Laser Ion Source and Evidence for a More Harmonic-Oscillator-Like Nuclear Potential

RADIOACTIVITY 135Sn(β-); measured Eβ, Eγ, β-delayed neutron spectra, T1/2. 136Sn(β-); measured T1/2. 134,135Sb deduced levels, J, π. Level systematics in neighboring nuclides discussed.

doi: 10.1016/S0375-9474(00)00678-3
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2000GA38      Eur.Phys.J. A 8, 331 (2000)

J.Galy, B.Fogelberg, F.Storrer, H.Mach

Yields of Products from Fast Neutron-Induced Fission of 233U Measured by Means of an Isotope Separator On-Line (ISOL) System

NUCLEAR REACTIONS 233U(n, F), E=1.2 MeV; measured Eγ, fission fragment yields. Comparison with fission induced on 235,238U and theoretical calculations. Heated target.

doi: 10.1007/s100500070086
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2000HO32      Hyperfine Interactions 129, 141 (2000)

P.Hoff, P.Baumann, A.Huck, A.Knipper, G.Walter, G.Marguier, B.Fogelberg, A.Lindroth, H.Mach, M.Sanchez-Vega, R.B.E.Taylor, P.van Duppen, A.Jokinen, M.Lindroos, M.Ramdhane, W.Kurcewicz, B.Jonson, G.Nyman, Y.Jading, K.-L.Kratz, A.Wohr, G.Lovhoiden, T.F.Thorsteinsen, J.Blomqvist, and the ISOLDE Collaboration

Nuclear spectroscopy at 133Sn

RADIOACTIVITY 133,134In(β-), (β-n) [from 238U(p, F), E=1 GeV]; measured Eγ, Iγ, En, In, βγ-, γγ-, nγ-coin. 133Sn deduced levels, J, π, single particle levels and configurations. Comparisons with Shell Model calculations.

doi: 10.1023/A:1012661816716
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2000IS13      Yad.Fiz. 63, No 10, 1828 (2000); Phys.Atomic Nuclei 63, 1740 (2000)

V.I.Isakov, K.A.Mezilev, Yu.N.Novikov, K.I.Erokhina, B.Fogelberg, H.Mach

Mass-Surface Predictions Near the Doubly Magic Nuclide 78Ni

NUCLEAR STRUCTURE 75,76,77,78Fe, 76,77,78,79Co, 77,78,79,80Ni, 78,79,80,81Cu, 79,80,81,82Zn; calculated one-, two-neutron separation energies, Qβ. Implications for astrophysical r-process discussed.

doi: 10.1134/1.1320143
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2000IS15      Part. and Nucl., Lett. 102, 44 (2000)

V.I.Isakov, K.I.Erokhina, B.Fogelberg, Yu.N.Novikov, H.Mach, K.A.Mezilev

On the Mass Surface and the Properties of Nuclides Close to Hypothetic Doubly Magic Lead-164

NUCLEAR STRUCTURE 160,161,162,163,164Hg, 161,162,163,164,165Tl, 162,163,164,165,166Pb, 163,164,165,166,167Bi, 164,165,166,167,168Po; calculated binding energy, decay energies. 164Pb; calculated single-particle energies. 164,208Pb; calculated proton and neutron densities, radii.


2000PO26      Phys.Lett. 491B, 225 (2000)

Zs.Podolyak, P.H.Regan, M.Pfutzner, J.Gerl, M.Hellstrom, M.Caamano, P.Mayet, Ch.Schlegel, A.Aprahamian, J.Benlliure, A.M.Bruce, P.A.Butler, D.Cortina Gil, D.M.Cullen, J.Doring, T.Enqvist, F.Rejmund, C.Fox, J.Garces Narro, H.Geissel, W.Gelletly, J.Giovinazzo, M.Gorska, H.Grawe, R.Grzywacz, A.Kleinbohl, W.Korten, M.Lewitowicz, R.Lucas, H.Mach, M.Mineva, C.D.O'Leary, F.De Oliveira, C.J.Pearson, M.Rejmund, M.Sawicka, H.Schaffner, K.Schmidt, Ch.Theisen, P.M.Walker, D.D.Warner, C.Wheldon, H.J.Wollersheim, S.C.Wooding, F.R.Xu

Isomer Spectroscopy of Neutron Rich 190W116

NUCLEAR REACTIONS Be(208Pb, X), E=1 GeV/nucleon; measured fragment isotopic yields, delayed Eγ, Iγ, γγ-, (fragment)γ-coin. 190W deduced levels, J, π, isomer T1/2. Fragment separator. Cranked mean-field calculations, comparisons with neighboring nuclides.

RADIOACTIVITY 190W(IT) [from Be(208Pb, X)]; measured Eγ, Iγ, γγ-coin. 190W deduced levels, J, π, isomer T1/2. Cranked mean-field calculations, comparisons with neighboring nuclides.

doi: 10.1016/S0370-2693(00)01051-0
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2000SC32      Phys.Scr. T88, 72 (2000)

C.Schlegel, P.H.Regan, M.Pfutzner, J.Gerl, M.Hellstrom, Zs.Podolyak, M.Caamano, P.Mayet, A.Aprahamian, J.Benlliure, A.M.Bruce, P.A.Butler, D.Cortina Gil, D.M.Cullen, J.Doring, T.Enqvist, F.Farget, C.Fox, J.Garces Narro, W.Gelletly, J.Giovinazzo, M.Gorska, H.Grawe, R.Grzywacz, A.Kleinbohl, W.Korten, M.Lewitowicz, R.Lucas, H.Mach, M.Mineva, C.O'Leary, F.De Oliveira, C.J.Pearson, M.Rejmund, M.Sawicka, H.Schaffner, K.Schmidt, Ch.Theisen, P.M.Walker, D.D.Warner, C.Wheldon, H.J.Wollersheim, S.Wooding, F.Xu

K-Isomers in Very Neutron-Rich Nuclei Around Mass 180

NUCLEAR REACTIONS 208Pb(208Pb, X), E=1 GeV/nucleon; measured Eγ, Iγ(t), (fragment)γ-coin. 179,190W deduced levels, J, π, isomeric states. Fragment separator.

doi: 10.1238/Physica.Topical.088a00072
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1999AA03      Nucl.Phys. A654, 499 (1999)

A.J.Aas, H.Mach, J.Kvasil, M.J.G.Borge, B.Fogelberg, I.S.Grant, K.Gulda, E.Hagebo, P.Hoff, W.Kurcewicz, A.Lindroth, G.Lovhoiden, A.Machova, T.Martinez, B.Rubio, M.Sanchez-Vega, J.F.Smith, J.L.Tain, R.B.E.Taylor, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

Quenched E1 Transition Rates in 231Th

RADIOACTIVITY 231Ac(β-); measured Eγ, Iγ, βγ-, γγ-coin, T1/2. 231Th deduced levels T1/2, B(λ), rotational bands. Fast-timing βγγ(t) method, quasiparticle-plus-phonon model.

doi: 10.1016/S0375-9474(99)00307-3
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1999FO01      Phys.Rev.Lett. 82, 1823 (1999)

B.Fogelberg, K.A.Mezilev, H.Mach, V.I.Isakov, J.Slivova

Precise Atomic Mass Values Near 132Sn: The resolution of a puzzle

RADIOACTIVITY 131,132Sn, 131,132,133Sb, 132,133,134Te, 132,133,134,135I, 133,135Xe(β-); measured βγ-coin; deduced Qβ, mass excess. 131,132In, 133,134Sn, 134Sb(β-); analyzed data; deduced Qβ, mass excess. Comparison with previous results, theory. Shell model analysis.

ATOMIC MASSES 131,132Sn, 131,132,133Sb, 132,133,134Te, 132,133,134,135I, 133,135Xe(β-); measured βγ-coin; deduced Qβ, mass excess. 131,132In, 133,134Sn, 134Sb(β-); analyzed data; deduced Qβ, mass excess. Comparison with previous results, theory. Shell model analysis.

doi: 10.1103/PhysRevLett.82.1823
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1999FR33      Nucl.Phys. A657, 355 (1999)

L.M.Fraile, A.J.Aas, M.J.G.Borge, B.Fogelberg, L.M.Garcia-Raffi, I.S.Grant, K.Gulda, E.Hagebo, W.Kurcewicz, J.Kvasil, G.Lovhoiden, H.Mach, A.Mackova, T.Martinez, B.Rubio, J.L.Tain, A.G.Teijeiro, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

Octupole Correlations in 229Ra

RADIOACTIVITY 229Fr(β-) [from 238U(p, 4n6p)]; measured Eγ, Iγ, I(ce), γγ-coin, T1/2. 229Ra deduced levels, J, π, ICC, multipolarities, rotational bands, B(λ). Ge, Si(Li) detectors, mini-orange spectrometer, quasiparticle-plus-phonon model.

doi: 10.1016/S0375-9474(99)00330-9
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1999LI18      Phys.Rev.Lett. 82, 4783 (1999)

A.Lindroth, B.Fogelberg, H.Mach, M.Sanchez-Vega, J.Bielcik

Octupole Vibration and Influence of Shell Effects on the E1 Transition Rates in 140Xe

RADIOACTIVITY 140I(β-) [from neutron-induced fission]; measured Eγ, Iγ, E(ce), I(ce), γγ-, (ce)γ-coin following β-decay. 140Xe deduced levels, J, π, T1/2, B(λ), possible octupole band. Mass-separated sources.

doi: 10.1103/PhysRevLett.82.4783
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1999NO05      Eur.Phys.J. A 6, 1 (1999)

A.Nowak, W.Urban, W.Kurcewicz, T.Rzaca-Urban, H.Mach, B.Fogelberg, J.L.Durell, M.J.Leddy, M.A.Jones, W.R.Phillips, A.G.Smith, B.J.Varley, M.Bentaleb, E.Lubkiewicz, N.Schulz, I.Ahmad, L.R.Morss

New Excitation Scheme of 139Cs

RADIOACTIVITY 248Cm(SF); measured Eγ, Iγ, γγ-coin. 139Xe(β-); measured Eγ, Iγ(t), γγ-coin. 139Cs deduced levels, possible J, π. Eurogam 2 aray. Level systematics in nearby isotones discussed.

doi: 10.1007/s100500050309
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1999SA31      Phys.Rev. C60, 024303 (1999)

M.Sanchez-Vega, B.Fogelberg, H.Mach, R.B.E.Taylor, A.Lindroth, J.Blomqvist, A.Covello, A.Gargano

Single-Proton and Core-Coupled States in 133Sb

RADIOACTIVITY 133Sn(β-) [from 235U(n, F)]; measured Eγ, Iγ, γγ-coin, γγ(t) following β-decay; deduced log ft, γ-branching ratios. 133Sb deduced levels, J, π. Comparison with shell-model predictions.

doi: 10.1103/PhysRevC.60.024303
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1998SA22      Phys.Rev.Lett. 80, 5504 (1998)

M.Sanchez-Vega, B.Fogelberg, H.Mach, R.B.E.Taylor, A.Lindroth, J.Blomqvist

First Identification of the d3/2 State and Measurements of Single Proton Transition Rates in 133Sb

RADIOACTIVITY 133Sn(β-); measured Eγ, Iγ, γγ-coin, γγ(t). 133Sb deduced levels, J, π, branching ratios, B(M2), single-particle proton state. Comparison with 209Bi data.

doi: 10.1103/PhysRevLett.80.5504
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1997HO15      Phys.Rev. C56, 2865 (1997)

P.Hoff, J.P.Omtvedt, B.Fogelberg, H.Mach, M.Hellstrom

The Z = 52 and N = 84 Nucleus 136Te: Low spin states observed in the decay of 136Sb

RADIOACTIVITY 136Sb(β-); measured Eγ, Iγ, γγ-, βγ-coin, log ft. 136Sb deduced ground state J, π. 136Te deduced levels, J, π, configurations. Data from other N=84 nuclei compared.

doi: 10.1103/PhysRevC.56.2865
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1997KU20      Nucl.Phys. A621, 827 (1997)

W.Kurcewicz, I.S.Grant, K.Gulda, A.J.Aas, J.Billowes, M.J.G.Borge, D.G.Burke, P.A.Butler, J.F.C.Cocks, B.Fogelberg, S.J.Freeman, G.D.Jones, E.Hagebo, P.Hoff, J.Honsi, A.Lindroth, G.Lovhoiden, H.Mach, T.Martinez, R.A.Naumann, K.Nybo, G.Nyman, H.Ravn, B.Rubio, J.Simpson, A.G.Smith, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

The Nuclear Structure of 227Fr

RADIOACTIVITY 227Rn(β-) [from 232Th(p, n5p), E=1 GeV]; measured Eγ, Iγ, I(ce), T1/2, βγγ(t), γγ-coin. 227Fr deduced levels, J, π, ICC, γ-multipolarity, rotational bands, B(λ). Ge, Si(Li), BGO, plastic, BaF2 detectors, mini-orange spectrometer.

doi: 10.1016/S0375-9474(97)00190-5
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1996AA01      Nucl.Phys. A611, 281 (1996)

A.J.Aas, H.Mach, M.J.G.Borge, B.Fogelberg, I.S.Grant, K.Gulda, E.Hagebo, W.Kurcewicz, J.Kvasil, A.Lindroth, T.Martinez, D.Nosek, B.Rubio, J.F.Smith, K.Steffensen, J.L.Tain, O.Tengblad, T.F.Thorsteinsen, and the ISOLDE Collaboration

Enhanced and Quenched B(E1) Transition Rates between Parity Doublet Bands in 227Ra

RADIOACTIVITY 227Fr(β-); measured βγγ(t). 227Ra deduced levels, J, π, T1/2, K, B(λ), band structure. Quasiparticle-plus-phonon model, Coriolis coupling.

doi: 10.1016/S0375-9474(96)00312-0
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1996HO16      Phys.Rev.Lett. 77, 1020 (1996)

P.Hoff, P.Baumann, A.Huck, A.Knipper, G.Walter, G.Marguier, B.Fogelberg, A.Lindroth, H.Mach, M.Sanchez-Vega, R.B.E.Taylor, P.Van Duppen, A.Jokinen, M.Lindroos, M.Ramdhane, W.Kurcewicz, B.Jonson, G.Nyman, Y.Jading, K.-L.Kratz, A.Wohr, G.Lovhoiden, T.F.Thorsteinsen, J.Blomqvist, and the ISOLDE Collaboration

Single-Neutron States in 133Sn

RADIOACTIVITY 133,134In(β-), (β-n) [from 238U(p, F), E=1 GeV]; measured Eγ, γγ-, βγ-coin, β-delayed neutron spectrum, T1/2, β-delayed neutron probability. 133Sn deduced levels, J, π, single particle levels, configurations. Comparison with Shell Model results.

doi: 10.1103/PhysRevLett.77.1020
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1995FO20      Phys.Scr. T56, 79 (1995)

B.Fogelberg, M.Hellstrom, D.Jerrestam, H.Mach, J.Blomqvist, A.Kerek, L.O.Norlin, J.P.Omtvedt

The Doubly Closed Shell Nucleus 132Sn: Collectivity and p-h states

RADIOACTIVITY 132In(β-) [from 235U(n, F), E=thermal]; measured γγ-coin, βγγ(t). 132Sn deduced levels, J, π, T1/2, collectivity, other shape features. Model comparison.

doi: 10.1088/0031-8949/1995/T56/012
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1995MA02      Phys.Rev. C51, 500 (1995)

H.Mach, D.Jerrestam, B.Fogelberg, M.Hellstrom, J.P.Omtvedt, K.I.Erokhina, V.I.Isakov

Structure of the p-h Nucleus 132Sb

RADIOACTIVITY 132Sn(β-) [from 235U(n, F)132In(β+-decay), E=thermal]; measured βγ(t), γγ(θ), I(ce). 132Sb deduced levels, J, π, δ(E2/M1), B(λ), γ-branching, T1/2, ICC. Model comparison.

doi: 10.1103/PhysRevC.51.500
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1995MA03      Phys.Rev. C51, 509 (1995)

H.Mach, B.Fogelberg

Lifetime of the 2+1 State in 154Gd and Deduction of the α Coefficient for the 2+1 → 0+1 Transition

RADIOACTIVITY 154Eu(β-); measured βγ(t), βγγ(t). 154Gd level deduced T1/2, ICC.

doi: 10.1103/PhysRevC.51.509
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