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NSR database version of April 11, 2024.

Search: Author = W.R.Plass

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2023JA05      Nucl.Phys. A1033, 122636 (2023)

A.Jacobs, C.Andreoiu, J.Bergmann, T.Brunner, T.Dickel, I.Dillmann, E.Dunling, J.Flowerdew, L.Graham, G.Gwinner, Z.Hockenbery, W.J.Huang, B.Kootte, Y.Lan, K.G.Leach, E.Leistenschneider, D.Lunney, E.M.Lykiardopoulou, V.Monier, I.Mukul, S.F.Paul, W.R.Plass, M.P.Reiter, C.Scheidenberger, R.Thompson, J.L.Tracy, C.Will, M.E.Wieser, J.Dilling, A.A.Kwiatkowski

Improved high-precision mass measurements of mid-shell neon isotopes

ATOMIC MASSES 24,25,26Ne; measured radioactive ion beam (RIB) TOF spectra; deduced mass excess. Comparison with AME2020. TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN), the Multi-Reflection Time-of-Flight Mass-Spectrometer (MR-TOF-MS).

doi: 10.1016/j.nuclphysa.2023.122636
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2023LY01      Phys.Rev. C 107, 024311 (2023)

E.M.Lykiardopoulou, G.Audi, T.Dickel, W.J.Huang, D.Lunney, W.R.Plass, M.P.Reiter, J.Dilling, A.A.Kwiatkowski, for the TITAN Collaboration

Exploring the limits of existence of proton-rich nuclei in the Z=70-82 region

ATOMIC MASSES 148Tb, 150,151,152,153,155Yb, 151Er, 151,153,154,156Lu, 152Ho, 152,156,157Tm, 156,157,159Hf, 157,158,160Ta, 160,161,163W, 161,162,164Re, 164,165,167Os, 165,166,168Ir, 168,169,171Pt, 170,172Au, 172,173,175Hg, 175Tl, 179Pb; analyzed experimental data on mass excess of 151,152,153,155Yb isotopes obtained in 2021BE23 (Phys.Rev.Lett. 127, 112501); deduced mass excess, S(p), S(2p), Thomas-Ehrmann shift. Values obtained by combining α-, β-, and proton-decay energies together with new experimental data on mass of Yb isotopes. Systematics of one and two proton separation energies for Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb isotopic chains. Comparison to AME2020.

doi: 10.1103/PhysRevC.107.024311
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2023MO07      Phys.Lett. B 839, 137833 (2023)

A.Mollaebrahimi, C.Hornung, T.Dickel, D.Amanbayev, G.Kripko-Koncz, W.R.Plass, S.Ayet S.Andres, S.Beck, A.Blazhev, J.Bergmann, H.Geissel, M.Gorska, H.Grawe, F.Greiner, E.Haettner, N.Kalantar-Nayestanaki, I.Miskun, F.Nowacki, C.Scheidenberger, S.Bagchi, D.L.Balabanski, Z.Brencic, O.Charviakova, P.Constantin, M.Dehghan, J.Ebert, L.Grof, O.Hall, M.N.Harakeh, S.Kaur, A.Kankainen, R.Knobel, D.A.Kostyleva, N.Kurkova, N.Kuzminchuk, I.Mardor, D.Nichita, J.-H.Otto, Z.Patyk, S.Pietri, S.Purushothaman, M.P.Reiter, A.-K.Rink, H.Roesch, A.Spataru, G.Stanic, A.State, Y.K.Tanaka, M.Vencelj, H.Weick, J.S.Winfield, M.I.Yavor, J.Zhao

Studying Gamow-Teller transitions and the assignment of isomeric and ground states at N = 50

NUCLEAR REACTIONS Be(124Xe, X), E=800 MeV/nucleon; measured reaction products, ToF. 94Ru, 94Rh, 94mRh, 96,97,97mRu, 97Pd, 97,97mAg, 98Pd, 98Cd, 99Ag, 100Pd, 100Ag, 100Cd, 101In; deduced mass excess and Q-values. Comparison with AME2020 evaluation. The FRS Ion Catcher (FRS-IC) at GSI, Germany.

doi: 10.1016/j.physletb.2023.137833
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2022DA06      Phys.Rev. C 105, L031304 (2022)

B.Das, B.Cederwall, C.Qi, M.Gorska, P.H.Regan, O.Aktas, H.M.Albers, A.Banerjee, M.M.R.Chishti, J.Gerl, N.Hubbard, S.Jazrawi, J.Jolie, A.K.Mistry, M.Polettini, A.Yaneva, S.Alhomaidhi, J.Zhao, T.Arici, S.Bagchi, G.Benzoni, P.Boutachkov, T.Davinson, T.Dickel, E.Haettner, O.Hall, Ch.Hornung, J.P.Hucka, P.R.John, I.Kojouharov, R.Knobel, D.Kostyleva, N.Kuzminchuk, I.Mukha, W.R.Plass, B.S.Nara Singh, J.Vasiljevic, S.Pietri, Zs.Podolyak, M.Rudigier, H.Rosch, E.Sahin, H.Schaffner, C.Scheidenberger, F.Schirru, A.Sharma, R.Shearman, Y.Tanaka, J.Vesic, H.Weick, H.J.Wollersheim, U.Ahmed, A.Algora, C.Appleton, J.Benito, A.Blazhev, A.Bracco, A.M.Bruce, M.Brunet, R.Canavan, A.Esmaylzadeh, L.M.Fraile, G.Hafner, H.Heggen, D.Kahl, V.Karayonchev, R.Kern, A.Korgul, G.Kosir, N.Kurz, R.Lozeva, M.Mikolajczuk, P.Napiralla, R.Page, C.M.Petrache, N.Pietralla, J.-M.Regis, P.Ruotsalainen, L.Sexton, V.Sanchez-Temble, M.Si, J.Vilhena, V.Werner, J.Wiederhold, W.Witt, P.J.Woods, G.Zimba

Nature of seniority symmetry breaking in the semimagic nucleus 94Ru

RADIOACTIVITY 95mPd(β+p)[from 9Be(124Xe, F), E=850 MeV/nucleon];measured Eγ, Iγ, Ep, Ip, γγ-coin, pγ-coin. 94Ru; deduced T1/2 of low-lying excited states, B(E2). Comparison to shell-model calculations. Ions were separated with FRS at GSI and implanted in the Advanced Implantation Detector Array (AIDA), composed of three double-sided silicon strip detectors (DSSSDs) situated at the center of the DEcay SPECtroscopy (DESPEC) setup, comprised of a hybrid array of six triple cluster high-purity germanium (HPGe) detectors and 36 LaBr3(Ce) detectors of the FAst TIMing Array (FATIMA).

doi: 10.1103/PhysRevC.105.L031304
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2022PO02      Phys.Rev. C 105, L041301 (2022)

W.S.Porter, B.Ashrafkhani, J.Bergmann, C.Brown, T.Brunner, J.D.Cardona, D.Curien, I.Dedes, T.Dickel, J.Dudek, E.Dunling, G.Gwinner, Z.Hockenbery, J.D.Holt, C.Hornung, C.Izzo, A.Jacobs, A.Javaji, B.Kootte, G.Kripko-Koncz, E.M.Lykiardopoulou, T.Miyagi, I.Mukul, T.Murbock, W.R.Plass, M.P.Reiter, J.Ringuette, C.Scheidenberger, R.Silwal, C.Walls, H.L.Wang, Y.Wang, J.Yang, J.Dilling, A.A.Kwiatkowski

Mapping the N=40 island of inversion: Precision mass measurements of neutron-rich Fe isotopes

ATOMIC MASSES 63,64,65,65m,66,67,68,69,69m,70Fe; measured time-of-flight; deduced mass excess, S(2n), pairing gap. Systematics of S(2n) values for Z=24–28 isotope chains. Compared to mean-field calculations employing recent Woods-Saxon Hamiltonian and results from the multishell valence-space in-medium similarity renormalization group (VS-IMSRG). Comparison to recommended values from AME2020. TITAN (TRIUMF’s Ion Trap for Atomic and Nuclear science) Multiple-Reflection Time-of- Flight Mass Spectrometer.

doi: 10.1103/PhysRevC.105.L041301
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2022PO06      Phys.Rev. C 106, 024312 (2022)

W.S.Porter, E.Dunling, E.Leistenschneider, J.Bergmann, G.Bollen, T.Dickel, K.A.Dietrich, A.Hamaker, Z.Hockenbery, C.Izzo, A.Jacobs, A.Javaji, B.Kootte, Y.Lan, I.Miskun, I.Mukul, T.Murbock, S.F.Paul, W.R.Plass, D.Puentes, M.Redshaw, M.P.Reiter, R.Ringle, J.Ringuette, R.Sandler, C.Scheidenberger, R.Silwal, R.Simpson, C.S.Sumithrarachchi, A.Teigelhofer, A.A.Valverde, R.Weil, I.T.Yandow, J.Dilling, A.A.Kwiatkowski

Investigating nuclear structure near N=32 and N=34: Precision mass measurements of neutron-rich Ca, Ti, and V isotopes

ATOMIC MASSES 54Ca, 52,54,55,56Ti, 54,55,56,57,58V; measured time-of-flight ion-cyclotron-resonances (ToF-ICR) using TRIUMF-TITAN multiple-reflection time-of-flight mass spectrometer (MR-ToF-MS) and the NSCL(MSU)-LEBIT Penning trap mass spectrometer; deduced mass excesses. Comparison with evaluated data in AME2020, and with valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(2n) values in 46,47,48,49,50,51K, 47,48,49,50,51,52,53,54Ca, 48,49,50,51,52,53,54,55,56,57Sc, 49,50,51,52,53,54,55,56,57Sc, 49,50,51,52,53,54,55,56Ti, 50,51,52,53,54,55,56,57,58,59V, 51,52,53,54,55,56,57,58,59,60Cr.

doi: 10.1103/PhysRevC.106.024312
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2022SP03      Nucl.Instrum.Methods Phys.Res. B522, 32 (2022)

A.Spataru, C.Hornung, T.Dickel, E.Haettner, S.Pietri, S.Ayet San Andres, S.Bagchi, D.L.Balabanski, J.Bergmann, J.Ebert, A.Finley, H.Geissel, F.Greiner, O.Hall, S.Kaur, W.Lippert, I.Miskun, J.-H.Otto, W.R.Plass, A.Prochazka, S.Purushothaman, C.Rappold, A.-K.Rink, C.Scheidenberger, Y.K.Tanaka, H.Toernqvist, H.Weick, J.S.Winfield

First coupling of the FRS particle identification and the FRS-Ion Catcher data acquisition systems: The case of 109In

NUCLEAR REACTIONS 9Be(124Xe, X)109In, E=600 MeV/nucleon; measured reaction products; deduced mass-to-charge spectrum of ground state and two isomeric states. The FRagment Separator (FRS) and the Multiple-Reflection Time-Of-Flight Mass-Spectrometer (MR-TOF-MS) particle identification (PID) systems at GSI.

doi: 10.1016/j.nimb.2022.04.003
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2021BE23      Phys.Rev.Lett. 127, 112501 (2021)

S.Beck, B.Kootte, I.Dedes, T.Dickel, A.A.Kwiatkowski, E.M.Lykiardopoulou, W.R.Plass, M.P.Reiter, C.Andreoiu, J.Bergmann, T.Brunner, D.Curien, J.Dilling, J.Dudek, E.Dunling, J.Flowerdew, A.Gaamouci, L.Graham, G.Gwinner, A.Jacobs, R.Klawitter, Y.Lan, E.Leistenschneider, N.Minkov, V.Monier, I.Mukul, S.F.Paul, C.Scheidenberger, R.I.Thompson, J.L.Tracy, Jr., M.Vansteenkiste, H.-L.Wang, M.E.Wieser, C.Will, J.Yang

Mass Measurements of Neutron-Deficient Yb Isotopes and Nuclear Structure at the Extreme Proton-Rich Side of the N=82 Shell

ATOMIC MASSES 150,151,152,153,154,155,156Yb; measured frequencies, TOF; deduced mass excess values. Comparison with systematics, AME2020 evaluation. TITAN's multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS).

RADIOACTIVITY 151Yb(IT); measured decay products; deduced excitation energy.

doi: 10.1103/PhysRevLett.127.112501
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2021IZ01      Phys.Rev. C 103, 025811 (2021)

C.Izzo, J.Bergmann, K.A.Dietrich, E.Dunling, D.Fusco, A.Jacobs, B.Kootte, G.Kripko-Koncz, Y.Lan, E.Leistenschneider, E.M.Lykiardopoulou, I.Mukul, S.F.Paul, M.P.Reiter, J.L.Tracy, C.Andreoiu, T.Brunner, T.Dickel, J.Dilling, I.Dillmann, G.Gwinner, D.Lascar, K.G.Leach, W.R.Plass, C.Scheidenberger, M.E.Wieser, A.A.Kwiatkowski

Mass measurements of neutron-rich indium isotopes for r-process studies

ATOMIC MASSES 125,126,127,127m,128,128m,129,129m,130,130m,131,131m,132,133,133m,134In; measured time-of-flight spectra using TITAN multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) at ISAC-TRIUMF facility; deduced mass excesses. 127m,128m,129m,130m,131m,133mIn; deduced excitation energies of two isomeric states each in 127In, 128In, 129In, and 131In, and one isomeric state each in 130In and 132In. Comparison with recent measurements, evaluated data in AME-2016 and ENSDF database, and with predictions from theoretical mass models: FRDM2012, HFB-24, WS4, KTUY05, and DZ95. Radioactive indium beams produced in UCx(p, X), E=480 MeV reaction, followed by selective ionization using an ion-guide laser ion source (IG-LIS), and mass separated by ISAC mass separator, and finally sent to MR-TOF-MS system consisting of a helium-filled rf transport system and injection trap, an electrostatic time-of-flight mass analyzer, and a MagneTOF detector. 128,128mIn, 128,128mSn, 128Sb, 128Cs, 128I, 128Te, 128Xe; measured mass spectrum for A=128 nuclei. Systematics of energies of 1/2- isomers in 101,103,105,107,109,111,113,115,117,119,121,123,125,127,129,131,133In. Relevance to future r-process calculations, including the effect of isomers.

doi: 10.1103/PhysRevC.103.025811
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2021MA22      Phys.Rev. C 103, 034319 (2021)

I.Mardor, S.A.Andres, T.Dickel, D.Amanbayev, S.Beck, J.Bergmann, H.Geissel, L.Grof, E.Haettner, C.Hornung, N.Kalantar-Nayestanaki, G.Kripko-Koncz, I.Miskun, A.Mollaebrahimi, W.R.Plass, C.Scheidenberger, H.Weick, S.Bagchi, D.L.Balabanski, A.A.Bezbakh, Z.Brencic, O.Charviakova, V.Chudoba, P.Constantin, M.Dehghan, A.S.Fomichev, L.V.Grigorenko, O.Hall, M.N.Harakeh, J.-P.Hucka, A.Kankainen, O.Kiselev, R.Knobel, D.A.Kostyleva, S.A.Krupko, N.Kurkova, N.Kuzminchuk, I.Mukha, I.A.Muzalevskii, D.Nichita, C.Nociforo, Z.Patyk, M.Pfutzner, S.Pietri, S.Purushothaman, M.P.Reiter, H.Roesch, F.Schirru, P.G.Sharov, A.Spataru, G.Stanic, A.State, Y.K.Tanaka, M.Vencelj, M.I.Yavor, J.Zhao

Mass measurements of As, Se, and Br nuclei, and their implication on the proton-neutron interaction strength toward the N=Z line

ATOMIC MASSES 69As, 70,71Se, 71Br; measured mass-to-charge ratio spectra using the multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) at the Fragment Separator (FRS) at GSI; deduced mass excesses and compared to evaluated data in AME-2016, and proton-neutron interaction (δVpn) for odd-odd nuclei along the N=Z line above Z=29. Isotopes produced via fragmentation in 9Be(124Xe, X), E=982 MeV/nucleon, followed by separation of fragments using FRS separator at GSI.

doi: 10.1103/PhysRevC.103.034319
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2020HO03      Phys.Lett. B 802, 135200 (2020)

C.Hornung, D.Amanbayev, I.Dedes, G.Kripko-Koncz, I.Miskun, N.Shimizu, S.Ayet S.Andres, J.Bergmann, T.Dickel, J.Dudek, J.Ebert, H.Geissel, M.Gorska, H.Grawe, F.Greiner, E.Haettner, T.Otsuka, W.R.Plass, S.Purushothaman, A.-Ka.Rink, C.Scheidenberger, H.Weick, S.Bagchi, A.Blazhev, O.Charviakova, D.Curien, A.Finlay, S.Kaur, W.Lippert, J.-H.Otto, Z.Patyk, S.Pietri, Y.K.Tanaka, Y.Tsunoda, J.S.Winfield

Isomer studies in the vicinity of the doubly-magic nucleus 100Sn: Observation of a new low-lying isomeric state in 97Ag

RADIOACTIVITY 97Ag, 101,103,105,107,109In(IT) [from 9Be(124Xe, X), E=600 MeV/nucleon]; measured decay products, mass-to-charge spectra; deduced mass excess, excitation energies. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2020.135200
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2020RE04      Phys.Rev. C 101, 025803 (2020)

M.P.Reiter, S.Ayet San Andres, S.Nikas, J.Lippuner, C.Andreoiu, C.Babcock, B.R.Barquest, J.Bollig, T.Brunner, T.Dickel, J.Dilling, I.Dillmann, E.Dunling, G.Gwinner, L.Graham, C.Hornung, R.Klawitter, B.Kootte, A.A.Kwiatkowski, Y.Lan, D.Lascar, K.G.Leach, E.Leistenschneider, G.Martinez-Pinedo, J.E.McKay, S.F.Paul, W.R.Plass, L.Roberts, H.Schatz, C.Scheidenberger, A.Sieverding, R.Steinbrugge, R.Thompson, M.E.Wieser, C.Will, D.Welch

Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations

ATOMIC MASSES 80,81,82,83,84,85Ga; measured time-of-flight spectra and mass excesses using the Ion Guide Laser Ion Source (IG-LIS) and Multiple-Reflection Time-of-Flight Mass-Spectrometer and isobar separator (MR-TOF-MS) at TRIUMF-TITAN facility; deduced solar r-process abundances for A=70-140. Comparison with AME-2016 values. Systematics of experimental and theoretical S(2n) values for Z=30-33, N=46-57 isotopes.

doi: 10.1103/PhysRevC.101.025803
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2019AN10      Phys.Rev. C 99, 064313 (2019), Erratum Phys.Rev. C 107, 029901 (2023)

S.A.S.Andres, C.Hornung, J.Ebert, W.R.Plass, T.Dickel, H.Geissel, C.Scheidenberger, J.Bergmann, F.Greiner, E.Haettner, C.Jesch, W.Lippert, I.Mardor, I.Miskun, Z.Patyk, S.Pietri, A.Pihktelev, S.Purushothaman, M.P.Reiter, A.-K.Rink, H.Weick, M.I.Yavor, S.Bagchi, V.Charviakova, P.Constantin, M.Diwisch, A.Finlay, S.Kaur, R.Knobel, J.Lang, B.Mei, I.D.Moore, J.-H.Otto, I.Pohjalainen, A.Prochazka, C.Rappold, M.Takechi, Y.K.Tanaka, J.S.Winfield, X.Xu

High-resolution, accurate multiple-reflection time-of-flight mass spectrometry for short-lived, exotic nuclei of a few events in their ground and low-lying isomeric states

ATOMIC MASSES 93,94Ru, 94Rh, 96,97Pd, 100Ag, 107Cd, 114,116,133,134Te, 114,134Sb, 117,119,133,134I, 119Xe, 124,125,126Cs, 211,212,213Fr, 211Po, 212,213,218,220Rn, 212,217At; 134mSb, 133mTe, 133m,134mI, 134mXe, 211mPo; measured mass excess and isomer energies using multiple-reflection time-of-flight mass spectrometry (MR-TOF-MS) with the FRS Ion Catcher at GSI. Isotopes produced in 9Be(238U, F), E=300, 1000 MeV/nucleon; 9Be(124Xe, X), E=600 MeV/nucleon reactions using FRS separator at GSI. Comparison with AME-2016 evaluation. Systematics of S(2n) values in N=123-136 Pb, Bi, Po, At, Rn, Fr, Ra, Ac, Th isotopes, and compared with theoretical predictions.

doi: 10.1103/PhysRevC.99.064313
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2018LE03      Phys.Rev.Lett. 120, 062503 (2018)

E.Leistenschneider, M.P.Reiter, S.Ayet San Andres, B.Kootte, J.D.Holt, P.Navratil, C.Babcock, C.Barbieri, B.R.Barquest, J.Bergmann, J.Bollig, T.Brunner, E.Dunling, A.Finlay, H.Geissel, L.Graham, F.Greiner, H.Hergert, C.Hornung, C.Jesch, R.Klawitter, Y.Lan, D.Lascar, K.G.Leach, W.Lippert, J.E.McKay, S.F.Paul, A.Schwenk, D.Short, J.Simonis, V.Soma, R.Steinbrugge, S.R.Stroberg, R.Thompson, M.E.Wieser, C.Will, M.Yavor, C.Andreoiu, T.Dickel, I.Dillmann, G.Gwinner, W.R.Plass, C.Scheidenberger, A.A.Kwiatkowski, J.Dilling

Dawning of the N=32 Shell Closure Seen through Precision Mass Measurements of Neutron-Rich Titanium Isotopes

ATOMIC MASSES 51V, 51,52,53,54,55Ti, 52,53,54,55Cr; measured radio frequencies, TOF; deduced mass excesses. Comparison with the AME16 recommended values.

doi: 10.1103/PhysRevLett.120.062503
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2018RE11      Phys.Rev. C 98, 024310 (2018)

M.P.Reiter, S.Ayet San Andres, E.Dunling, B.Kootte, E.Leistenschneider, C.Andreoiu, C.Babcock, B.R.Barquest, J.Bollig, T.Brunner, I.Dillmann, A.Finlay, G.Gwinner, L.Graham, J.D.Holt, C.Hornung, C.Jesch, R.Klawitter, Y.Lan, D.Lascar, J.E.McKay, S.F.Paul, R.Steinbrugge, R.Thompson, J.L.Tracy, M.E.Wieser, C.Will, T.Dickel, W.R.Plass, C.Scheidenberger, A.A.Kwiatkowski, J.Dilling

Quenching of the N=32 neutron shell closure studied via precision mass measurements of neutron-rich vanadium isotopes

ATOMIC MASSES 52,53,54Cr, 51,52,53Ti, 51,52,53,54,55V; measured multiple-reflection time-of-flight mass-Spectrometer and isobar separator (MR-TOF-MS) spectra, time-of-flight ion-cyclotron-resonance (ToF-ICR) resonances, and mass excesses using TRIUMF Ion Trap for Atomic and Nuclear science (TITAN) penning trap; deduced shell gaps for N=26-35 vanadium and calcium isotopes. Comparison with values in AME-2016. Systematics of S(2n) and half-lives for Z=19-24, N=28-36 nuclides. Discussed the evolution of the N=32 neutron shell closure.

doi: 10.1103/PhysRevC.98.024310
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2017GI07      Acta Phys.Pol. B48, 423 (2017)

F.Giacoppo, K.Blaum, M.Block, P.Chhetri, Ch.E.Dullmann, C.Droese, S.Eliseev, P.Filianin, S.Gotz, Y.Gusev, F.Herfurth, F.P.Hessberger, O.Kaleja, J.Khuyagbaatar, M.Laatiaoui, F.Lautenschlager, C.Lorenz, G.Marx, E.Minaya Ramirez, A.Mistry, Yu.N.Novikov, W.R.Plass, S.Raeder, D.Rodriguez, D.Rudolph, L.G.Sarmiento, C.Scheidenberger, L.Schweikhard, P.Thirolf, A.Yakushev

Recent Upgrades of the SHIPTRAP Setup: On the Finish Line Towards Direct Mass Spectroscopy of Superheavy Elements

doi: 10.5506/APhysPolB.48.423
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2016KN02      Phys.Lett. B 754, 288 (2016)

R.Knobel, M.Diwisch, F.Bosch, D.Boutin, L.Chen, C.Dimopoulou, A.Dolinskii, B.Franczak, B.Franzke, H.Geissel, M.Hausmann, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, G.Martinez-Pinedo, M.Matos, M.Mazzocco, G.Munzenberg, S.Nakajima, C.Nociforo, F.Nolden, T.Ohtsubo, A.Ozawa, Z.Patyk, W.R.Plass, C.Scheidenberger, J.Stadlmann, M.Steck, B.Sun, T.Suzuki, P.M.Walker, H.Weick, M.-R.Wu, M.Winkler, T.Yamaguchi

First direct mass measurements of stored neutron-rich 129, 130, 131Cd isotopes with FRS-ESR

ATOMIC MASSES 129,130,131Cd; measured mean velocity of the stored fragments; deduced mass excess values of cadmium isotopes and uncertainties. Comparison with AME 2012 evaluation.

doi: 10.1016/j.physletb.2016.01.039
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2016KN03      Eur.Phys.J. A 52, 138 (2016)

R.Knobel, M.Diwisch, H.Geissel, Yu.A.Litvinov, Z.Patyk, W.R.Plass, C.Scheidenberger, B.Sun, H.Weick, F.Bosch, D.Boutin, L.Chen, C.Dimopoulou, A.Dolinskii, B.Franczak, B.Franzke, M.Hausmann, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, M.Matos, M.Mazzocco, G.Munzenberg, S.Nakajima, C.Nociforo, F.Nolden, T.Ohtsubo, A.Ozawa, J.Stadlmann, M.Steck, T.Suzuki, P.M.Walker, M.Winkler, T.Yamaguchi

New results from isochronous mass measurements of neutron-rich uranium fission fragments with the FRS-ESR-facility at GSI

NUCLEAR REACTIONS 9Be(238U, x), E=410-415 Mev/nucleon; measured reaction products; deduced mass excess for Z=28-62. Compared to AME2012 and other data.

ATOMIC MASSES 68Ge, 91Se, 94Br, 105Y, 106,107Zr, 110Nb, 113Mo, 114,115Tc, 118Ru, 121Rh, 123,124Pd, 126Ag, 138Sb, 141,143I, 149,150Ba, 150,151La, 154Ce, 93Br, 109Nb, 117Ru, 125Ag, 137Sb, 140I; measured correlation between the spread of the revolution time and the number of turns recorded in the ring; deduced mass-excess values.

doi: 10.1140/epja/i2016-16138-6
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2015AK02      Phys.Rev. C 91, 031301 (2015)

A.Akber, M.W.Reed, P.M.Walker, Yu.A.Litvinov, G.J.Lane, T.Kibedi, K.Blaum, F.Bosch, C.Brandau, J.J.Carroll, D.M.Cullen, I.J.Cullen, A.Y.Deo, B.Detwiler, C.Dimopoulou, G.D.Dracoulis, F.Farinon, H.Geissel, E.Haettner, M.Heil, R.S.Kempley, R.Knobel, C.Kozhuharov, J.Kurcewicz, N.Kuzminchuk, S.Litvinov, Z.Liu, R.Mao, C.Nociforo, F.Nolden, W.R.Plass, Zs.Podolyak, A.Prochazka, C.Scheidenberger, D.Shubina, M.Steck, Th.Stohlker, B.Sun, T.P.D.Swan, G.Trees, H.Weick, N.Winckler, M.Winkler, P.J.Woods, T.Yamaguchi

Increased isomeric lifetime of hydrogen-like 192mOs

RADIOACTIVITY 192mOs(IT)[from 9Be(197Au, X), E=478-492 MeV/nucleon]; measured half-life of the highly-charged stored ions using Schottky mass spectrometry in Experimental Storage Ring (ESR) of the isomeric state of 192Os at UNILAC and SIS-18 heavy-ion accelerators of GSI. Discussed increased half-life of the hydrogen-like ions of isomeric state as compared to that of the neutral ions.

doi: 10.1103/PhysRevC.91.031301
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2015DI03      Phys.Lett. B 744, 137 (2015)

T.Dickel, W.R.Plass, S.Ayet San Andres, J.Ebert, H.Geissel, E.Haettner, C.Hornung, I.Miskun, S.Pietri, S.Purushothaman, M.P.Reiter, A.-K.Rink, C.Scheidenberger, H.Weick, P.Dendooven, M.Diwisch, F.Greiner, F.Heisse, R.Knobel, W.Lippert, I.D.Moore, I.Pohjalainen, A.Prochazka, M.Ranjan, M.Takechi, J.S.Winfield, X.Xu

First spatial separation of a heavy ion isomeric beam with a multiple-reflection time-of-flight mass spectrometer

NUCLEAR REACTIONS Be(238U, X)211Po, E=1000 MeV/nucleon; measured reaction products; deduced mass spectrum of 211Po ions in the ground and isomeric states, isomer excitation energy. Comparison with available data.

doi: 10.1016/j.physletb.2015.03.047
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2013CH12      Phys.Rev.Lett. 110, 122502 (2013)

L.Chen, P.M.Walker, H.Geissel, Yu.A.Litvinov, K.Beckert, P.Beller, F.Bosch, D.Boutin, L.Caceres, J.J.Carroll, D.M.Cullen, I.J.Cullen, B.Franzke, J.Gerl, M.Gorska, G.A.Jones, A.Kishada, R.Knobel, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, Z.Liu, S.Mandal, F.Montes, G.Munzenberg, F.Nolden, T.Ohtsubo, Z.Patyk, W.R.Plass, Zs.Podolyak, S.Rigby, N.Saito, T.Saito, C.Scheidenberger, E.C.Simpson, M.Shindo, M.Steck, B.Sun, S.J.Williams, H.Weick, M.Winkler, H.-J.Wollersheim, T.Yamaguchi

Direct Observation of Long-Lived Isomers in 212Bi

NUCLEAR REACTIONS Be(238U, X)212Bi, E=670 MeV/nucleon; measured revolution frequency; deduced isomeric states excitation energies, level scheme, T1/2. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.110.122502
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2013DR04      Eur.Phys.J. A 49, 13 (2013)

C.Droese, D.Ackermann, L.-L.Andersson, K.Blaum, M.Block, M.Dworschak, M.Eibach, S.Eliseev, U.Forsberg, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, G.Marx, E.Minaya Ramirez, D.Nesterenko, Yu.N.Novikov, W.R.Plass, D.Rodriguez, D.Rudolph, C.Scheidenberger, L.Schweikhard, S.Stolze, P.G.Thirolf, C.Weber

High-precision mass measurements of 203-207Rn and 213Ra with SHIPTRAP

NUCLEAR REACTIONS Dy(48Ca, 204Rn), (48Ca, 205Rn), (48Ca, 206Rn), (48Ca, 207Rn), E=4.4 MeV/nucleon;170Er(48Ca, 213Ra), E=4.4 MeV;170Er(40Ar, 203Rn), (40Ar, 204Rn), (40Ar, 205Rn), E=4.7 MeV/nucleon;160Gd(50Ti, 204Rn), (40Ar, 205Rn), (40Ar, 206Rn), E=4.55 MeV/nucleon; measured evaporation residues, frequency ratio using tandem Penning trap spectrometer SHIPTRAP; deduced σ, mass excess, 2n separation energy; calculated σ using statistical model code HIVAP. Compared with AME; 2n separation energy compared with trends for Pb, Po, Rn, Ra.

ATOMIC MASSES 203,204,205,206,207Rn, 213Ra; measured frequency ratio, number of resonances; deduced mass. Compared with AME 2003.

doi: 10.1140/epja/i2013-13013-0
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2013PU02      Europhys.Lett. 104, 42001 (2013)

S.Purushothaman, M.P.Reiter, E.Haettner, P.Dendooven, T.Dickel, H.Geissel, J.Ebert, C.Jesch, W.R.Plass, M.Ranjan, H.Weick, F.Amjad, S.Ayet, M.Diwisch, A.Estrade, F.Farinon, F.Greiner, N.Kalantar-Nayestanaki, R.Knobel, J.Kurcewicz, J.Lang, I.D.Moore, I.Mukha, C.Nociforo, M.Petrick, M.Pfutzner, S.Pietri, A.Prochazka, A.-K.Rink, S.Rinta-Antila, C.Scheidenberger, M.Takechi, Y.K.Tanaka, J.S.Winfield, M.I.Yavor

First experimental results of a cryogenic stopping cell with short-lived, heavy uranium fragments produced at 1000 MeV/u

doi: 10.1209/0295-5075/104/42001
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2013SH30      Phys.Rev. C 88, 024310 (2013)

D.Shubina, R.B.Cakirli, Yu.A.Litvinov, K.Blaum, C.Brandau, F.Bosch, J.J.Carroll, R.F.Casten, D.M.Cullen, I.J.Cullen, A.Y.Deo, B.Detwiler, C.Dimopoulou, F.Farinon, H.Geissel, E.Haettner, M.Heil, R.S.Kempley, C.Kozhuharov, R.Knobel, J.Kurcewicz, N.Kuzminchuk, S.A.Litvinov, Z.Liu, R.Mao, C.Nociforo, F.Nolden, Z.Patyk, W.R.Plass, A.Prochazka, M.W.Reed, M.S.Sanjari, C.Scheidenberger, M.Steck, Th.Stohlker, B.Sun, T.P.D.Swan, G.Trees, P.M.Walker, H.Weick, N.Winckler, M.Winkler, P.J.Woods, T.Yamaguchi, C.Zhou

Schottky mass measurements of heavy neutron-rich nuclides in the element range 70≤Z≤79 at the GSI Experimental Storage Ring

ATOMIC MASSES 181,183Lu, 185,186Hf, 187,188Ta, 189,190,191W, 192,193Re, 195Os; measured masses by Schottky mass spectrometry (SMS) technique using FRS-ESR facility at GSI. 181Hf, 181,182,183,185Ta, 184,186,187W, 189,191Re, 188,190,192,193Os, 191Ir, 194,196Pt, 196Au; measured Schottky frequency spectra for calibration purpose; deduced mass excesses, and compared with AME-2003. 179Lu, 182,182mHf, 184Ta, 186,187,188,190m,192mRe, 189,190m,191,194Os, 190,192,193,194,195Ir, 191Pt; measured Schottky frequency spectra. Bare, H- or He-like isotopes produced in 9Be(197Au, X) reaction using E(197Au)=469.35 MeV/nucleon beam from UNILAC and SIS-18 accelerators at GSI. Investigated correlations between S(2n) and energies of first 2+ states in even-even N=84-124, Z=62-78 isotopes; deduced collectivity. Systematics of S(2n) values for even N=100-124, odd Z=67-77.

doi: 10.1103/PhysRevC.88.024310
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2012CH19      Nucl.Phys. A882, 71 (2012)

L.Chen, W.R.Plass, H.Geissel, R.Knobel, C.Kozhuharov, Yu.A.Litvinov, Z.Patyk, C.Scheidenberger, K.Siegien-Iwaniuk, B.Sun, H.Weick, K.Beckert, P.Beller, F.Bosch, D.Boutin, L.Caceres, J.J.Carroll, D.M.Cullen, I.J.Cullen, B.Franzke, J.Gerl, M.Gorska, G.A.Jones, A.Kishada, J.Kurcewicz, S.A.Litvinov, Z.Liu, S.Mandal, F.Montes, G.Munzenberg, F.Nolden, T.Ohtsubo, Zs.Podolyak, R.Propri, S.Rigby, N.Saito, T.Saito, M.Shindo, M.Steck, P.M.Walker, S.Williams, M.Winkler, H.-J.Wollersheim, T.Yamaguchi

New results on mass measurements of stored neutron-rich nuclides in the element range from Pt to U with the FRS-ESR facility at 360-400 MeV/u

NUCLEAR REACTIONS 9Be(238U, F), E=670 MeV/nucleon; measured reaction fragments using fragment separator, fragment mass using SMS (Schottky Mass Spectrometry); calculated mass excess;deduced neutron-rich exotic fragments mass using FFT of Schottky frequency spectra, mass excess systematic deviations from modern mass models. Compared with AME03 tables.

ATOMIC MASSES 128Sn, 133Sb, 136Te, 144La, 146Ce, 202Au, 207Hg, 220At, 224,225,226,227,229Fr, 229,230,231,232Ac, 235Th, 235,236,237,238Pa, 202Pt, 213Tl, 217,218Bi, 219,220,221,222Po, 221,222,223,224At, 223,224,225,226,227,228Rn, 228,230,231Fr, 231,232,233,234Ra, 233,234,235,236Ac, 236,237Th; measured revolution frequency spectra; deduced mass excess and their uncertainties, systematic deviations of up to 1500 keV from modern mass models. Comparison with available data.

doi: 10.1016/j.nuclphysa.2012.03.002
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2012MI27      Science 337, 1207 (2012)

E.Minaya-Ramirez, D.Ackermann, K.Blaum, M.Block, C.Droese, C.E.Dullmann, M.Dworschak, M.Eibach, S.Eliseev, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, G.Marx, M.Mazzocco, D.Nesterenko, Y.N.Novikov, W.R.Plass, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, C.Weber

Direct Mapping of Nuclear Shell Effects in the Heaviest Elements

ATOMIC MASSES 252,253,254,255No, 255,256Lr; measured time-of-flight ion-cyclotron-resonance; deduced frequency ratios, mass excess. Comparison with theoretical calculations, SHIPTRAP results.

doi: 10.1126/science.1225636
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2012RE19      Phys.Rev. C 86, 054321 (2012)

M.W.Reed, P.M.Walker, I.J.Cullen, Yu.A.Litvinov, D.Shubina, G.D.Dracoulis, K.Blaum, F.Bosch, C.Brandau, J.J.Carroll, D.M.Cullen, A.Y.Deo, B.Detwiler, C.Dimopoulou, G.X.Dong, F.Farinon, H.Geissel, E.Haettner, M.Heil, R.S.Kempley, R.Knobel, C.Kozhuharov, J.Kurcewicz, N.Kuzminchuk, S.Litvinov, Z.Liu, R.Mao, C.Nociforo, F.Nolden, W.R.Plass, Zs.Podolyak, A.Prochazka, C.Scheidenberger, M.Steck, Th.Stohlker, B.Sun, T.P.D.Swan, G.Trees, H.Weick, N.Winckler, M.Winkler, P.J.Woods, F.R.Xu, T.Yamaguchi

Long-lived isomers in neutron-rich Z=72-76 nuclides

NUCLEAR REACTIONS Be(197Au, X)183Hf/184Hf/186Hf/186Ta/187Ta, 186W/190W/190Re/192Re/194Re/194Ir/194Os/195Os/196Pt, E=478-492 MeV/nucleon; measured Schottky mass and frequency spectra, ion revolution frequencies, survival curves of ions, isomer energies and half-lives of highly charged (helium-like, hydrogen-like, and bare) ions, γ spectra. FRS and ESR at UNILAC-SIS accelerator facility in GSI. 183,184,186Hf, 186,187Ta, 186W, 190,192,194Re, 195Os; deduced levels, isomers, J, π, configuration, decay modes. Comparison with potential energy surface, and multi-quasiparticle (MQP) calculations. 186Ta, 192Re; calculated 2qp levels. Systematics of theoretical and experimental 2qp 8- isomers and 4qp levels in 170,172,174,176,178,180,182,184,186,188,190Hf.

doi: 10.1103/PhysRevC.86.054321
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2012RE22      J.Phys.:Conf.Ser. 381, 012058 (2012)

M.W.Reed, P.M.Walker, I.J.Cullen, Yu.A.Litvinov, K.Blaum, F.Bosch, C.Brandau, J.J.Carroll, D.M.Cullen, A.Y.Deo, B.Detwiler, C.Dimopoulou, G.D.Dracoulis, F.Farinon, H.Geissel, E.Haettner, M.Heil, R.S.Kempley, R.Knobel, C.Kozhuharov, J.Kurcewicz, N.Kuzminchuk, S.Litvinov, Z.Liu, R.Mao, C.Nociforo, F.Nolden, W.R.Plass, A.Prochazka, C.Scheidenberger, D.Shubina, M.Steck, Th.Stohlker, B.Sun, T.P.D.Swan, G.Trees, H.Weick, N.Winckler, M.Winkler, P.J.Woods, T.Yamaguchi

Technique for Resolving Low-lying Isomers in the Experimental Storage Ring (ESR) and the Occurrence of an Isomeric State in 192Re

doi: 10.1088/1742-6596/381/1/012058
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2011HA08      Phys.Rev.Lett. 106, 122501 (2011)

E.Haettner, D.Ackermann, G.Audi, K.Blaum, M.Block, S.Eliseev, T.Fleckenstein, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, S.Rahaman, T.Rauscher, D.Rodriguez, H.Schatz, C.Scheidenberger, L.Schweikhard, B.Sun, P.G.Thirolf, G.Vorobjev, M.Wang, C.Weber

Mass Measurements of Very Neutron-Deficient Mo and Tc Isotopes and Their Impact on rp Process Nucleosynthesis

ATOMIC MASSES 81Rb, 80,81,84Sr, 86Zr, 85Nb, 85,86,87Mo, 87Tc; measured frequency ratios; deduced masses, proton separation energies, possible limitations for rp astrophysical process. Comparison with AME03, Penning trap mass measurement.

doi: 10.1103/PhysRevLett.106.122501
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2010BL03      Hyperfine Interactions 196, 225 (2010)

M.Block, D.Ackermann, K.Blaum, C.Droese, M.Dworschak, M.Eibach, S.Eliseev, T.Fleckenstein, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, A.Popeko, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.K.Vorobyev, C.Weber

Penning trap mass measurements of transfermium elements with SHIPTRAP

ATOMIC MASSES 252,253,254No; measured cyclotron resonance curves; deduced masses.

doi: 10.1007/s10751-010-0161-z
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2010BL04      Nature(London) 463, 785 (2010)

M.Block, D.Ackermann, K.Blaum, C.Droese, M.Dworschak, S.Eliseev, T.Fleckenstein, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, A.Popeko, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.K.Vorobyev, C.Weber

Direct mass measurements above uranium bridge the gap to the island of stability

ATOMIC MASSES 252,253,254No; measured masses by Penning-trap method at GSI, using 133Cs as standard.

doi: 10.1038/nature08774
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2010CH19      Phys.Lett. B 691, 234 (2010)

L.Chen, W.R.Plass, H.Geissel, R.Knobel, C.Kozhuharov, Yu.A.Litvinov, Z.Patyk, C.Scheidenberger, K.Siegien-Iwaniuk, B.Sun, H.Weick, K.Beckert, P.Beller, F.Bosch, D.Boutin, L.Caceres, J.J.Carroll, D.M.Cullen, I.J.Cullen, B.Franzke, J.Gerl, M.Gorska, G.A.Jones, A.Kishada, J.Kurcewicz, S.A.Litvinov, Z.Liu, S.Mandal, F.Montes, G.Munzenberg, F.Nolden, T.Ohtsubo, Zs.Podolyak, R.Propri, S.Rigby, N.Saito, T.Saito, M.Shindo, M.Steck, P.Ugorowski, P.M.Walker, S.Williams, M.Winkler, H.-J.Wollersheim, T.Yamaguchi

Discovery and investigation of heavy neutron-rich isotopes with time-resolved Schottky spectrometry in the element range from thallium to actinium

NUCLEAR REACTIONS Be(238U, X)236Ac/224At/222Po/221Po/213Tl, E=670 MeV/nucleon; measured revolution frequency of the cooled fragments; deduced T1/2. Comparison with theoretical models, Darmstadt storage-cooler ring ESR.

ATOMIC MASSES 236Ac, 224At, 222Po, 221Po, 213Tl; measured revolution frequency of the cooled fragments; deduced atomic masses.

doi: 10.1016/j.physletb.2010.05.078
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2010DW01      Phys.Rev. C 81, 064312 (2010)

M.Dworschak, M.Block, D.Ackermann, G.Audi, K.Blaum, C.Droese, S.Eliseev, T.Fleckenstein, E.Haettner, F.Herfurth, F.P.Hessberger, S.Hofmann, J.Ketelaer, J.Ketter, H.-J.Kluge, G.Marx, M.Mazzocco, Yu.N.Novikov, W.R.Plass, A.Popeko, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.K.Vorobyev, M.Wang, C.Weber

Penning trap mass measurements on nobelium isotopes

ATOMIC MASSES 252,253,254No; measured cyclotron frequencies using SHIPTRAP Penning-trap system; deduced mean frequency ratios and mass excesses. Comparison with AME2003 and re-evaluation.

ATOMIC MASSES 232U, 236,238Pu, 240,241,242Cm, 244,245,246Cf, 248,249,250Fm, 252,253,254No, 256,257,258Rf, 260,261,262Sg, 264,265,266Hs, 268,269,270Ds; compiled and evaluated mass excesses.

NUCLEAR REACTIONS 206,207,208Pb(48Ca, 2n)252No/253No/254No, E=4.55 MeV/nucleon; measured production σ.

doi: 10.1103/PhysRevC.81.064312
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2010KU02      Acta Phys.Pol. B41, 525 (2010)

J.Kurcewicz, F.Bosch, H.Geissel, Yu.A.Litvinov, N.Winckler, K.Beckert, P.Beller, D.Boutin, C.Brandau, L.Chen, C.Dimopoulou, H.G.Essel, B.Fabian, T.Faestermann, A.Fragner, B.Franzke, E.Haettner, M.Hausmann, S.Hess, P.Kienle, R.Knobel, C.Kozhuharov, S.A.Litvinov, L.Maier, M.Mazzocco, F.Montes, A.Musumarra, C.Nociforo, F.Nolden, Z.Patyk, W.R.Plass, A.Prochazka, R.Reda, R.Reuschl, C.Scheidenberger, M.Steck, T.Stohlker, B.Sun, K.Takahashi, S.Torilov, M.Trassinelli, H.Weick, M.Winkler

Studies of Two-body β-Decays at the FRS-ESR Facility

RADIOACTIVITY 205Hg, 207Tl(β-) [from Be(208Pb, X), E=750 MeV/nucleon];140Pr, 142Pm, 122I(EC) [from Be(152Sm, X), E=508 MeV/nucleon];measured time evolution of the Schottky noise, revolution frequencies; deduced decay rates, Q-values, time-dependent decay constant.


2010RE07      Phys.Rev.Lett. 105, 172501 (2010)

M.W.Reed, I.J.Cullen, P.M.Walker, Yu.A.Litvinov, K.Blaum, F.Bosch, C.Brandau, J.J.Carroll, D.M.Cullen, A.Y.Deo, B.Detwiller, C.Dimopoulou, G.D.Dracoulis, F.Farinon, H.Geissel, E.Haettner, M.Heil, R.S.Kempley, R.Knobel, C.Kozhuharov, J.Kurcewicz, N.Kuzminchuk, S.Litvinov, Z.Liu, R.Mao, C.Nociforo, F.Nolden, W.R.Plass, A.Prochazka, C.Scheidenberger, M.Steck, Th.Stohlker, B.Sun, T.P.D.Swan, G.Trees, H.Weick, N.Winckler, M.Winkler, P.J.Woods, T.Yamaguchi

Discovery of Highly Excited Long-Lived Isomers in Neutron-Rich Hafnium and Tantalum Isotopes through Direct Mass Measurements

NUCLEAR REACTIONS 9Be(197Au, X)183Hf/184Hf/186Hf/186Ta/187Ta, E=478-492 MeV/nucleon; measured Schottky frequency spectra of ions stored in an ESR storage ring; deduced T1/2, J, π, isomer region near N=116.

doi: 10.1103/PhysRevLett.105.172501
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2010SU11      Phys.Lett. B 688, 294 (2010)

B.Sun, R.Knobel, H.Geissel, Yu.A.Litvinov, P.M.Walker, K.Blaum, F.Bosch, D.Boutin, C.Brandau, L.Chen, I.J.Cullen, A.Dolinskii, B.Fabian, M.Hausmann, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, Z.Liu, M.Mazzocco, J.Meng, F.Montes, G.Munzenberg, A.Musumarra, S.Nakajima, C.Nociforo, F.Nolden, T.Ohtsubo, A.Ozawa, Z.Patyk, W.R.Plass, C.Scheidenberger, M.Steck, T.Suzuki, H.Weick, N.Winckler, M.Winkler, T.Yamaguchi

Direct measurement of the 4.6 MeV isomer in stored bare 133Sb ions

NUCLEAR REACTIONS 9Be(238U, F)133Sb, E=411 MeV/nucleon; measured mass, survival time in FRS using IMS technique. 133Sb; deduced isomeric level energy, T1/2, J, π.

doi: 10.1016/j.physletb.2010.04.020
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2010SU18      Nucl.Phys. A834, 476c (2010)

B.Sun, F.Bosch, D.Boutin, C.Brandau, L.Chen, C.Dimopoulou, B.Fabian, H.Geissel, R.Knobel, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, Yu.A.Litvinov, J.Meng, G.Munzenberg, C.Nociforo, F.Nolden, W.R.Plass, C.Scheidenberger, M.Steck, P.M.Walker, H.Weick, N.Winckler, M.Winkler

Precise measurement of nuclear isomers in the storage ring at GSI

ATOMIC MASSES 125Ce, 133Sb; analyzed isomer masses and experimental possibilities.

doi: 10.1016/j.nuclphysa.2010.01.069
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2009CH08      Phys.Rev.Lett. 102, 122503 (2009)

L.Chen, Yu.A.Litvinov, W.R.Plass, K.Beckert, P.Beller, F.Bosch, D.Boutin, L.Caceres, R.B.Cakirli, J.J.Carroll, R.F.Casten, R.S.Chakrawarthy, D.M.Cullen, I.J.Cullen, B.Franzke, H.Geissel, J.Gerl, M.Gorska, G.A.Jones, A.Kishada, R.Knobel, C.Kozhuharov, S.A.Litvinov, Z.Liu, S.Mandal, F.Montes, G.Munzenberg, F.Nolden, T.Ohtsubo, Z.Patyk, Zs.Podolyak, R.Propri, S.Rigby, N.Saito, T.Saito, C.Scheidenberger, M.Shindo, M.Steck, P.Ugorowski, P.M.Walker, S.Williams, H.Weick, M.Winkler, H.-J.Wollersheim, T.Yamaguchi

Schottky Mass Measurement of the 208Hg Isotope: Implication for the Proton-Neutron Interaction Strength around Doubly Magic 208Pb

ATOMIC MASSES 208Hg; measured atomic mass using time resolved Schottky mass spectrometry.

doi: 10.1103/PhysRevLett.102.122503
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2009SU04      Int.J.Mod.Phys. E18, 346 (2009)

B.Sun, R.Knobel, Yu.A.Litvinov, S.Nakajima, H.Geissel, J.Meng, K.Beckert, F.Bosch, D.Boutin, C.Brandau, L.Chen, I.J.Cullen, C.Dimopoulou, B.Fabian, M.Hausmann, O.Klepper, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, M.Mazzocco, F.Montes, G.Munzenberg, A.Musumara, C.Nociforo, F.Nolden, T.Ohtsubo, A.Ozawa, Z.Patyk, W.R.Plass, C.Scheidenberger, M.Steck, T.Suzuki, P.M.Walker, H.Weick, N.Winckler, M.Winkler, T.Yamaguchi

Large-scale mass measurements of short-lived nuclides with the isochronous mass spectrometry at GSI

doi: 10.1142/S0218301309012379
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2009WI09      Phys.Lett. B 679, 36 (2009)

N.Winckler, H.Geissel, Yu.A.Litvinov, K.Beckert, F.Bosch, D.Boutin, C.Brandau, L.Chen, C.Dimopoulou, H.G.Essel, B.Fabian, T.Faestermann, A.Fragner, E.Haettner, S.Hess, P.Kienle, R.Knobel, C.Kozhuharov, S.A.Litvinov, M.Mazzocco, F.Montes, G.Munzenberg, C.Nociforo, F.Nolden, Z.Patyk, W.R.Plass, A.Prochazka, R.Reda, R.Reuschl, C.Scheidenberger, M.Steck, T.Stohlker, S.Yu.Torilov, M.Trassinelli, B.Sun, H.Weick, M.Winkler

Orbital electron capture decay of hydrogen- and helium-like 142Pm ions

RADIOACTIVITY 142Pm(EC), (β+) [from 9Be(152Sm, X), E=607.4 MeV/nucleon]; measured Schottky frequency spectra of ions in a storage ring; deduced T1/2.

doi: 10.1016/j.physletb.2009.07.019
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008RA03      Phys.Rev.Lett. 100, 012501 (2008)

C.Rauth, D.Ackermann, K.Blaum, M.Block, A.Chaudhuri, Z.Di, S.Eliseev, R.Ferrer, D.Habs, F.Herfurth, F.P.Hessberger, S.Hofmann, H.-J.Kluge, G.Maero, A.Martin, G.Marx, M.Mukherjee, J.B.Neumayr, W.R.Plass, S.Rahaman, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.Vorobjev, C.Weber

First Penning Trap Mass Measurements beyond the Proton Drip Line

ATOMIC MASSES 144,145,146,147Ho, 147,148Tm; measured masses using the SHIPTRAP penning trap mass spectrometer.

doi: 10.1103/PhysRevLett.100.012501
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2008SU19      Nucl.Phys. A812, 1 (2008)

B.Sun, R.Knobel, Yu.A.Litvinov, H.Geissel, J.Meng, K.Beckert, F.Bosch, D.Boutin, C.Brandau, L.Chen, I.J.Cullen, C.Dimopoulou, B.Fabian, M.Hausmann, C.Kozhuharov, S.A.Litvinov, M.Mazzocco, F.Montes, G.Munzenberg, A.Musumarra, S.Nakajima, C.Nociforo, F.Nolden, T.Ohtsubo, A.Ozawa, Z.Patyk, W.R.Plass, C.Scheidenberger, M.Steck, T.Suzuki, P.M.Walker, H.Weick, N.Winckler, M.Winkler, T.Yamaguchi

Nuclear structure studies of short-lived neutron-rich nuclei with the novel large-scale isochronous mass spectrometry at the FRS-ESR facility

ATOMIC MASSES 33Al, 79,80Ga, 82,83Ge, 83,84,85,86As, 86,87,88,89Se, 88,89,90Br, 96,97Rb, 99,100,101Y, 105,106,107Nb, 110,111,112Tc, 113,115Ru, 118Rh, 119,120Pd, 122,123Ag, 125Cd, 131Sn, 132,133,135Sb, 134,135,137,138Te, 137,139,140,141I, 140,141,143Xe, 146Ba; measured masses using isochronous mass spectrometry technique; deduced two-neutron separation and neutron shell gap energies. Comparison with AME-2003, other data and various nuclear mass models.

NUCLEAR REACTIONS 9Be(238U, X)79Ga/80Ga/81Ge/82Ge/84As/85As/86Se/87Se/88Se/89Br/90Br/91Kr/92Kr/93Kr/94Rb/95Rb/96Sr/97Sr/98Sr/99Y/100Y/101Zr/102Zr/104Nb/105Nb/106Nb/107Mo/108Mo/110Tc/111Tc/114Ru/116Rh/119Pd, E=411 MeV/nucleon; measured TOF spectrum; deduced yields.

doi: 10.1016/j.nuclphysa.2008.08.013
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2008WE10      Phys.Rev. C 78, 054310 (2008)

C.Weber, V.-V.Elomaa, R.Ferrer, C.Frohlich, D.Ackermann, J.Aysto, G.Audi, L.Batist, K.Blaum, M.Block, A.Chaudhuri, M.Dworschak, S.Eliseev, T.Eronen, U.Hager, J.Hakala, F.Herfurth, F.P.Hessberger, S.Hofmann, A.Jokinen, A.Kankainen, H.-J.Kluge, K.Langanke, A.Martin, G.Martinez-Pinedo, M.Mazzocco, I.D.Moore, J.B.Neumayr, Yu.N.Novikov, H.Penttila, W.R.Plass, A.V.Popov, S.Rahaman, T.Rauscher, C.Rauth, J.Rissanen, D.Rodriguez, A.Saastamoinen, C.Scheidenberger, L.Schweikhard, D.M.Seliverstov, T.Sonoda, F.-K.Thielemann, P.G.Thirolf, G.K.Vorobjev

Mass measurements in the vicinity of the r p-process and the ν p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP

ATOMIC MASSES 84Y, 87Zr, 88,89Mo, 88,89,90,91,92Tc, 90,91,92,93Ru, 92,93,94,95Rh, 94,95,95m,96Pd; measured masses. Comparison with evaluated data.

doi: 10.1103/PhysRevC.78.054310
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2007BL16      Eur.Phys.J. D 45, 39 (2007)

M.Block, D.Ackermann, K.Blaum, A.Chaudhuri, Z.Di, S.Eliseev, R.Ferrer, D.Habs, F.Herfurth, F.P.Hessberger, S.Hofmann, H.-J.Kluge, G.Maero, A.Martin, G.Marx, M.Mazzocco, M.Mukherjee, J.B.Neumayr, W.R.Plass, W.Quint, S.Rahaman, C.Rauth, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, G.Vorobjev, C.Weber

Towards direct mass measurements of nobelium at SHIPTRAP

doi: 10.1140/epjd/e2007-00189-2
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2007LI40      Hyperfine Interactions 173, 55 (2007)

Yu.A.Litvinov, H.Geissel, K.Beckert, P.Beller, F.Bosch, D.Boutin, C.Brandau, L.Chen, R.Knobel, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, M.Mazzocco, G.Munzenberg, C.Nociforo, F.Nolden, W.R.Plass, C.Scheidenberger, M.Steck, B.Sun, H.Weick, M.Winkler

Direct mass measurements of neutron-deficient 152Sm projectile fragments at the FRS-ESR facility

doi: 10.1007/s10751-007-9542-3
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2007RA37      Eur.Phys.J. Special Topics 150, 329 (2007)

C.Rauth, D.Ackermann, G.Audi, M.Block, A.Chaudhuri, S.Eliseev, F.Herfurth, F.P.Hessberger, S.Hofmann, H.-J.Kluge, A.Martin, G.Marx, M.Mukherjee, J.B.Neumayr, W.R.Plass, S.Rahaman, D.Rodriguez, L.Schweikhard, P.G.Thirolf, G.Vorobjev, C.Weber

Direct mass measurements around A=146 at SHIPTRAP

ATOMIC MASSES 143,147Tb, 143,144,145,146,147,148Dy, 144,145,146,147,148Ho, 146,147,148Er, 147,148Tm; measured masses using the SHIPTRAP penning trap mass spectrometer. Compared results to previous results.

doi: 10.1140/epjst/e2007-00339-8
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2007SU07      Eur.Phys.J. A 31, 393 (2007)

B.Sun, Yu.A.Litvinov, P.M.Walker, K.Beckert, P.Beller, F.Bosch, D.Boutin, C.Brandau, L.Chen, C.Dimopoulou, H.Geissel, R.Knobel, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, M.Mazzocco, J.Meng, C.Nociforo, F.Nolden, W.R.Plass, C.Scheidenberger, M.Steck, H.Weick, M.Winkler

Discovery of a new long-lived isomeric state in 125Ce

ATOMIC MASSES 69Ge, 125Ce; measured masses. 125Ce deduced long-lived isomeric state, excitation energy, T1/2.

doi: 10.1140/epja/i2006-10252-0
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2006GE23      Hyperfine Interactions 173, 49 (2006)

H.Geissel, R.Knobel, Yu.A.Litvinov, B.Sun, K.Beckert, P.Beller, F.Bosch, D.Boutin, C.Brandau, L.Chen, B.Fabian, M.Hausmann, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, M.Mazzocco, F.Montes, G.Munzenberg, A.Musumarra, C.Nociforo, F.Nolden, W.R.Plass, C.Scheidenberger, M.Steck, H.Weick, M.Winkler

A new experimental approach for isochronous mass measurements of short-lived exotic nuclei with the FRS-ESR facility

doi: 10.1007/s10751-007-9541-4
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2006RA38      Int.J. Mass Spectrom. 251, 146 (2006)

S.Rahaman, M.Block, D.Ackermann, D.Beck, A.Chaudhuri, S.Eliseev, H.Geissel, D.Habs, F.Herfurth, F.P.Hessberger, S.Hofmann, G.Marx, M.Mukherjee, J.B.Neumayr, M.Petrick, W.R.Plass, W.Quint, C.Rauth, D.Rodriguez, C.Scheidenberger, L.Schweikhard, P.G.Thirolf, C.Weber

On-line commissioning of SHIPTRAP

ATOMIC MASSES 147,148Er, 147Ho; measured masses and time of flight using the Penning-trap mass spectrometer SHIPTRAP. Nuclides produced at SHIP facility.

doi: 10.1016/j.ijms.2006.01.049
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2006SC37      Hyperfine Interactions 173, 61 (2006)

C.Scheidenberger, K.Beckert, P.Beller, F.Bosch, C.Brandau, D.Boutin, L.Chen, B.Franzke, H.Geissel, R.Knobel, C.Kozhuharov, J.Kurcewicz, S.A.Litvinov, Yu.A.Litvinov, M.Mazzocco, G.Munzenberg, F.Nolden, W.R.Plass, M.Steck, B.Sun, H.Weick, M.Winkler

Isobar separation at FRS-ESR - a development towards pure isomeric stored beams

doi: 10.1007/s10751-007-9543-2
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