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237 results on '"Neidherr, D."'

51. Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in $^{217 , 218 , 219}$At revealed by in-source laser spectroscopy

Author

Barzakh, A. E., Cubiss, J. G., Andreyev, A. N., Seliverstov, M. D., Andel, B., Antalic, S., Ascher, P., Atanasov, D., Beck, D., Bieroń, J., Blaum, K., Borgmann, Ch., Breitenfeldt, M., Capponi, L., Cocolios, T. E., Day Goodacre, T., Derkx, X., De Witte, H., Elseviers, J., Fedorov, D. V., Fedosseev, V. N., Fritzsche, S., Gaffney, L. P., George, S., Ghys, L., Hessberger, Fritz-Peter, Huyse, M., Imai, N., Kalaninová, Z., Kisler, D., Köster, U., Kowalska, M., Kreim, S., Lane, J. F. W., Liberati, V., Lunney, D., Lynch, K. M., Manea, V., Marsh, B. A., Mitsuoka, S., Molkanov, P. L., Nagame, Y., Neidherr, D., Nishio, K., Ota, S., Pauwels, D., Popescu, L., Radulov, D., Rapisarda, E., Revill, J. P., Rosenbusch, M., Rossel, R. E., Rothe, S., Sandhu, K., Schweikhard, L., Sels, S., Truesdale, V. L., Van Beveren, C., Van Den Bergh, P., Van Duppen, P., Wakabayashi, Y., Wendt, K. D. A., Wienholtz, F., Whitmore, B. W., Wilson, G. L., Wolf, R. N., and Zuber, K.

Subjects
ddc:530
Abstract

Physical review / C covering nuclear physics 99(5), 054317 (2019). doi:10.1103/PhysRevC.99.054317, Published by Inst., Woodbury, NY

Published
2019
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52. Change in structure between the = 1/2 States in Tl and Au

Author

Cubiss, J.G., Barzakh, A.E., Andreyev, A.N., Al Monthery, M., Althubiti, N., Andel, B., Antalic, S., Atanasov, D., Blaum, K., Cocolios, T.E., Day Goodacre, T., de Groote, R.P., de Roubin, A., Farooq-Smith, G.J., Fedorov, D.V., Fedosseev, V.N., Ferrer, R., Fink, D.A., Gaffney, L.P., Ghys, L., Gredley, A., Harding, R.D., Herfurth, F., Huyse, M., Imai, N., Joss, D.T., Köster, U., Kreim, S., Liberati, V., Lunney, D., Lynch, K.M., Manea, V., Marsh, B.A., Martinez Palenzuela, Y., Molkanov, P.L., Mosat, P., Neidherr, D., O'Neill, G.G., Page, R.D., Procter, T.J., Rapisarda, E., Rosenbusch, M., Rothe, S., Sandhu, K., Schweikhard, L., Seliverstov, M.D., Sels, S., Spagnoletti, P., Truesdale, V.L., Van Beveren, C., Van Duppen, P., Veinhard, M., Venhart, M., Veselský, M., Wearing, F., Welker, A., Wienholtz, F., Wolf, R.N., Zemlyanoy, S.G., and Zuber, K.

Abstract

The first accurate measurements of the α-decay branching ratio and half-life of the Iπ=1/2+ ground state in $^{181}$Tl have been made, along with the first determination of the magnetic moments and I=1/2 spin assignments of the ground states in $^{177,179}$Au. The results are discussed within the complementary systematics of the reduced α-decay widths and nuclear g factors of low-lying, Iπ=1/2+ states in the neutron-deficient lead region. The findings shed light on the unexpected hindrance of the 1/2+→1/2+, $^{181}$Tl→g177Au$^{g}$ α decay, which is explained by a mixing of π3s1/2 and π2d3/2 configurations in $^{177}$Au$^{g}$, whilst $^{181}$Tl$^{g}$ remains a near-pure π3s1/2. This conclusion is inferred from the g factor of $^{177}$Au$^{g}$ which has an intermediate value between those of π3s1/2 and π2d3/2 states. A similar mixed configuration is proposed for the Iπ=1/2+ ground state of $^{179}$Au. This mixing may provide evidence for triaxial shapes in the ground states in these nuclei.

Published
2018

53. Precision Mass Measurements of Cr58-63: Nuclear Collectivity Towards the N=40 Island of Inversion

Author

Mougeot, M, Atanasov, D, Blaum, K, Chrysalidis, K, Goodacre, T Day, Fedorov, D, Fedosseev, V, George, S, Herfurth, F, Holt, JD, Lunney, D, Manea, V, Marsh, B, Neidherr, D, Rosenbusch, M, Rothe, S, Schweikhard, L, Schwenk, A, Seiffert, C, Simonis, J, Stroberg, SR, Welker, A, Wienholtz, F, Wolf, RN, and Zuber, K

Subjects
Science & Technology, SPECTROMETRY, Physics, FEATURES, Physical Sciences, Physics, Multidisciplinary, LASER ION-SOURCE, FACILITY, PENNING TRAP, FORCES, Nuclear Experiment, CALCIUM ISOTOPES
Abstract

The neutron-rich isotopes ^{58-63}Cr were produced for the first time at the ISOLDE facility and their masses were measured with the ISOLTRAP spectrometer. The new values are up to 300 times more precise than those in the literature and indicate significantly different nuclear structure from the new mass-surface trend. A gradual onset of deformation is found in this proton and neutron midshell region, which is a gateway to the second island of inversion around N=40. In addition to comparisons with density-functional theory and large-scale shell-model calculations, we present predictions from the valence-space formulation of the ab initio in-medium similarity renormalization group, the first such results for open-shell chromium isotopes. ispartof: PHYSICAL REVIEW LETTERS vol:120 issue:23 ispartof: location:United States status: published

Published
2018

54. Charge radii and electromagnetic moments of $^{195--211}\mathrm{At}$

Author

Cubiss, JG, Barzakh, AE, Seliverstov, MD, Andreyev, AN, Andel, B, Antalic, S, Ascher, P, Atanasov, D, Beck, D, Bieroń, J, Blaum, K, Borgmann, C, Breitenfeldt, M, Capponi, L, Cocolios, TE, Day Goodacre, T, Derkx, X, De Witte, H, Elseviers, J, Fedorov, DV, Fedosseev, VN, Fritzsche, S, Gaffney, LP, George, S, Ghys, L, Heßberger, FP, Huyse, M, Imai, N, Kalaninová, Z, Kisler, D, Köster, U, Kowalska, M, Kreim, S, Lane, JFW, Liberati, V, Lunney, D, Lynch, KM, Manea, V, Marsh, BA, Mitsuoka, S, Molkanov, PL, Nagame, Y, Neidherr, D, Nishio, K, Ota, S, Pauwels, D, Popescu, L, Radulov, D, Rapisarda, E, Revill, JP, Rosenbusch, M, Rossel, RE, Rothe, S, Sandhu, K, Schweikhard, L, Sels, S, Truesdale, VL, Van Beveren, C, Van den Bergh, P, Wakabayashi, Y, Van Duppen, P, Wendt, KDA, Wienholtz, F, Whitmore, BW, Wilson, GL, Wolf, RN, and Zuber, K

Subjects
Nuclear Experiment
Abstract

© 2018 authors. Hyperfine-structure parameters and isotope shifts of At195-211 have been measured for the first time at CERN-ISOLDE, using the in-source resonance-ionization spectroscopy method. The hyperfine structures of isotopes were recorded using a triad of experimental techniques for monitoring the photo-ion current. The Multi-Reflection Time-of-Flight Mass Spectrometer, in connection with a high-resolution electron multiplier, was used as an ion-counting setup for isotopes that either were affected by strong isobaric contamination or possessed a long half-life; the ISOLDE Faraday cups were used for cases with high-intensity beams; and the Windmill decay station was used for short-lived, predominantly α-decaying nuclei. The electromagnetic moments and changes in the mean-square charge radii of the astatine nuclei have been extracted from the measured hyperfine-structure constants and isotope shifts. This was only made possible by dedicated state-of-the-art large-scale atomic computations of the electronic factors and the specific mass shift of atomic transitions in astatine that are needed for these extractions. By comparison with systematics, it was possible to assess the reliability of the results of these calculations and their ascribed uncertainties. A strong deviation in the ground-state mean-square charge radii of the lightest astatine isotopes, from the trend of the (spherical) lead isotopes, is interpreted as the result of an onset of deformation. This behavior bears a resemblance to the deviation observed in the isotonic polonium isotopes. Cases for shape coexistence have been identified in At197,199, for which a significant difference in the charge radii for ground (9/2-) and isomeric (1/2+) states has been observed. ispartof: Physical Review C vol:97 issue:5 status: Published online

Published
2018

55. Precision Mass Measurement of $^{58-63}$Cr: Nuclear Collectivity towards the $N=40$ Island of Inversion

Author

Mougeot, M., Atanasov, D., Blaum, K., Chrysalidis, K., Day Goodacre, T., Fedorov, D., Fedosseev, V., George, S., Herfurth, F., Holt, J.D., Lunney, D., Manea, V., Marsh, B., Neidherr, D., Rosenbusch, M., Rothe, S., Schweikhard, L., Schwenk, A., Seiffert, C., Simonis, J., Stroberg, S.R., Welker, A., Wienholtz, F., Wolf, R.N., Zuber, K., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear Theory (nucl-th), Nuclear Theory, nucl-th, Nuclear Physics - Theory, Physics::Atomic and Molecular Clusters, FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, Nuclear Experiment
Abstract

The neutron-rich isotopes $^{58-63}$Cr were produced for the first time at the ISOLDE facility and their masses were measured with the ISOLTRAP spectrometer. The new values are up to 300 times more precise than those in the literature and indicate significantly different nuclear structure from the new mass-surface trend. A gradual onset of deformation is found in this proton and neutron mid-shell region, which is a gateway to the second island of inversion around \emph{N}=40. In addition to comparisons with density-functional theory and large-scale shell-model calculations, we present predictions from the valence-space formulation of the \emph{ab initio} in-medium similarity renormalization group, the first such results for open-shell chromium isotopes., Comment: 6 pages, 3 figures, 1 table

Published
2018
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56. Precision Mass Measurements of $^{58 – 63}$Cr : Nuclear Collectivity Towards the N = 40 Island of Inversion

Author

Mougeot, M., Atanasov, D., Blaum, K., Chrysalidis, K., Day Goodacre, T., Fedorov, D., Fedosseev, V., George, S., Herfurth, F., Holt, J., Lunney, D., Manea, V., Marsh, B., Neidherr, D., Rosenbusch, M., Rothe, S., Schweikhard, L., Schwenk, A., Seiffert, C., Simonis, J., Stroberg, S., Welker, A., Wienholtz, F., Wolf, R., and Zuber, K.

Subjects
ddc:550, Präzisionsexperimente - Abteilung Blaum, Nuclear Experiment
Abstract

Physical review letters 120(23), 232501 (2018). doi:10.1103/PhysRevLett.120.232501, Published by APS, College Park, Md.

Published
2018
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57. Charge radii and electromagnetic moments of $^{195 – 211}$At

Author

Cubiss, J. G., Barzakh, A. E., Seliverstov, M. D., Andreyev, A. N., Andel, B., Antalic, S., Ascher, P., Atanasov, D., Beck, D., Bieroń, J., Blaum, K., Borgmann, Ch., Breitenfeldt, M., Capponi, L, Cocolios, T. E., Day Goodacre, T., Derkx, X., De Witte, H., Elseviers, J., Fedorov, D. V., Fedosseev, V N, Fritzsche, S., Gaffney, L. P., George, S., Ghys, L., Heßberger, F. P., Huyse, M., Imai, N., Kalaninová, Z., Kisler, D., Köster, U., Kowalska, M., Kreim, S., Lane, J. F. W., Liberati, V., Lunney, D., Lynch, K. M., Manea, V., Marsh, B. A., Mitsuoka, S., Molkanov, P. L., Nagame, Y., Neidherr, D., Nishio, K., Ota, S., Pauwels, D., Popescu, L., Radulov, D., Rapisarda, E., Revill, J. P., Rosenbusch, M., Rossel, R.E., Rothe, S., Sandhu, K., Schweikhard, L., Sels, S., Truesdale, V. L., Van Beveren, C., Van den Bergh, P., Wakabayashi, Y., Van Duppen, P., Wendt, K.D.A., Wienholtz, F., Whitmore, B. W., Wilson, G. L., Wolf, R.N., Zuber, K, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut Laue-Langevin (ILL), ILL, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ddc:530, Physics::Atomic Physics, Präzisionsexperimente - Abteilung Blaum, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

Physical review / C 97(5), 054327 (2018). doi:10.1103/PhysRevC.97.054327, Published by Inst., Woodbury, NY

Published
2018
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58. QEC -value determination for Na21→Ne21 and Mg23→Na23 mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at the CERN ISOLDE facility

Author

Karthein, J., primary, Atanasov, D., additional, Blaum, K., additional, Breitenfeldt, M., additional, Bondar, V., additional, George, S., additional, Hayen, L., additional, Lunney, D., additional, Manea, V., additional, Mougeot, M., additional, Neidherr, D., additional, Schweikhard, L., additional, Severijns, N., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2019
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59. Mass measurements of neutron-rich isotopes near N=20 by in-trap decay with the ISOLTRAP spectrometer

Author

Ascher, P., primary, Althubiti, N., additional, Atanasov, D., additional, Blaum, K., additional, Cakirli, R. B., additional, Grévy, S., additional, Herfurth, F., additional, Kreim, S., additional, Lunney, D., additional, Manea, V., additional, Neidherr, D., additional, Rosenbusch, M., additional, Schweikhard, L., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2019
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60. Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in At217,218,219 revealed by in-source laser spectroscopy

Author

Barzakh, A. E., primary, Cubiss, J. G., additional, Andreyev, A. N., additional, Seliverstov, M. D., additional, Andel, B., additional, Antalic, S., additional, Ascher, P., additional, Atanasov, D., additional, Beck, D., additional, Bieroń, J., additional, Blaum, K., additional, Borgmann, Ch., additional, Breitenfeldt, M., additional, Capponi, L., additional, Cocolios, T. E., additional, Day Goodacre, T., additional, Derkx, X., additional, De Witte, H., additional, Elseviers, J., additional, Fedorov, D. V., additional, Fedosseev, V. N., additional, Fritzsche, S., additional, Gaffney, L. P., additional, George, S., additional, Ghys, L., additional, Heßberger, F. P., additional, Huyse, M., additional, Imai, N., additional, Kalaninová, Z., additional, Kisler, D., additional, Köster, U., additional, Kowalska, M., additional, Kreim, S., additional, Lane, J. F. W., additional, Liberati, V., additional, Lunney, D., additional, Lynch, K. M., additional, Manea, V., additional, Marsh, B. A., additional, Mitsuoka, S., additional, Molkanov, P. L., additional, Nagame, Y., additional, Neidherr, D., additional, Nishio, K., additional, Ota, S., additional, Pauwels, D., additional, Popescu, L., additional, Radulov, D., additional, Rapisarda, E., additional, Revill, J. P., additional, Rosenbusch, M., additional, Rossel, R. E., additional, Rothe, S., additional, Sandhu, K., additional, Schweikhard, L., additional, Sels, S., additional, Truesdale, V. L., additional, Van Beveren, C., additional, Van den Bergh, P., additional, Van Duppen, P., additional, Wakabayashi, Y., additional, Wendt, K. D. A., additional, Wienholtz, F., additional, Whitmore, B. W., additional, Wilson, G. L., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2019
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61. The binding energy of 79Cu: probing the structure of the doubly magic 78Ni from only one proton away

Author

Welker, A., Althubiti, N., Atanasov, D., Blaum, K., Cocolios, T., Herfurth, F., Kreim, S., Lunney, D., Manea, V., Mougeot, M., Neidherr, D., Nowacki, F., Poves, A., Rosenbusch, M., Schweikhard, L., Wienholtz, F., Wolf, R., and Zuber, K.

Subjects
Präzisionsexperimente - Abteilung Blaum, Nuclear Experiment
Abstract

The masses of the neutron-rich copper isotopes 75–79Cu are determined using the precision mass spectrometer ISOLTRAP at the CERN-ISOLDE facility. The trend from the new data differs significantly from that of previous results, offering a first accurate view of the mass surface adjacent to the Z=28, N=50 nuclide 78Ni and supporting a doubly magic character. The new masses compare very well with large-scale shell-model calculations that predict shape coexistence in a doubly magic 78Ni and a new island of inversion for Z

Published
2017

62. Binding Energy of Cu 79:Probing the Structure of the Doubly Magic Ni 78 from only One Proton Away

Author

Welker, A., Althubiti, N. A.S., Atanasov, D., Blaum, K., Cocolios, T. E., Herfurth, F., Kreim, S., Lunney, D., Manea, V., Mougeot, M., Neidherr, D., Nowacki, F., Poves, A., Rosenbusch, M., Schweikhard, L., Wienholtz, F., Wolf, R. N., and Zuber, K.

Subjects
Nuclear Experiment
Abstract

The masses of the neutron-rich copper isotopes Cu75-79 are determined using the precision mass spectrometer ISOLTRAP at the CERN-ISOLDE facility. The trend from the new data differs significantly from that of previous results, offering a first accurate view of the mass surface adjacent to the Z=28, N=50 nuclide Ni78 and supporting a doubly magic character. The new masses compare very well with large-scale shell-model calculations that predict shape coexistence in a doubly magic Ni78 and a new island of inversion for Z

Published
2017
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63. Binding Energy of Cu-79: Probing the Structure of the Doubly Magic Ni-78 from Only One Proton Away

Author

Welker, A, Althubiti, NAS, Atanasov, D, Blaum, K, Cocolios, Thomas Elias, Herfurth, F, Kreim, S, Lunney, D, Manea, V, Mougeot, M, Neidherr, D, Nowacki, F, Poves, A, Rosenbusch, M, Schweikhard, L, Wienholtz, F, Wolf, RN, and Zuber, K

Subjects
magic numbers, copper, Nuclear Experiment, radioactive ions, mass spectrometry
Abstract

The masses of the neutron-rich copper isotopes 75–79Cu are determined using the precision mass spectrometer ISOLTRAP at the CERN-ISOLDE facility. The trend from the new data differs significantly from that of previous results, offering a first accurate view of the mass surface adjacent to the Z=28, N=50 nuclide 78Ni and supporting a doubly magic character. The new masses compare very well with large-scale shell-model calculations that predict shape coexistence in a doubly magic 78Ni and a new island of inversion for Z

Published
2017

64. Spectroscopy of the long-lived excited state in the neutron-deficient nuclides 195Po, 197Po, 199Po by precision mass measurements

Author

Althubiti, NA, Atanasov, D, Blaum, K, Cocolios, TE, Goodacre, T Day, Farooq-Smith, GJ, Fedorov, DV, Fedosseev, VN, George, S, Herfurth, F, Heyde, Kristiaan, Kreim, S, Lunney, D, Lynch, KM, Manea, V, Marsh, BA, Neidherr, D, Rosenbusch, M, Rossel, RE, Rothe, S, Schweikhard, L, Seliverstov, MD, Welker, A, Wienholtz, F, Wolf, RN, and Zuber, K

Subjects
CHARGE RADII, Physics and Astronomy, NUCLEI, MOMENTS, ISOTOPES, SPECTROMETER, PENNING TRAP, Nuclear Experiment, LASER SPECTROSCOPY, ISOLTRAP, ISOLDE, INTRUDER STATES
Abstract

Direct mass measurements of the low-spin 3/2(-) and high-spin 13/2(+) states in the neutron-deficient isotopes Po-195 and Po-197 were performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN. These measurements allow the determination of the excitation energy of the isomeric state arising from the nu i(13/2) orbital in Po-195,Po-197. Additionally, the excitation energy of isomeric states of lead, radon, and radium isotopes in this region were obtained from alpha-decay chains. These excitation energies complete the knowledge of the energy systematics in the region and confirm that the 13/2(+) states remain isomeric, independent of the number of valence neutrons.

Published
2017

65. Binding Energy of $^{79}\mathrm{Cu}$: Probing the Structure of the Doubly Magic $^{78}\mathrm{Ni}$ from Only One Proton Away

Author

Welker, A, Althubiti, N A S, Atanasov, D, Blaum, K, Cocolios, T E, Herfurth, F, Kreim, S, Lunney, D, Manea, V, Mougeot, M, Neidherr, D, Nowacki, F, Poves, A, Rosenbusch, M, Schweikhard, L, Wienholtz, F, Wolf, R N, Zuber, K, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)

Subjects
Nuclear Physics - Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

International audience; The masses of the neutron-rich copper isotopes Cu75–79 are determined using the precision mass spectrometer ISOLTRAP at the CERN-ISOLDE facility. The trend from the new data differs significantly from that of previous results, offering a first accurate view of the mass surface adjacent to the Z=28, N=50 nuclide Ni78 and supporting a doubly magic character. The new masses compare very well with large-scale shell-model calculations that predict shape coexistence in a doubly magic Ni78 and a new island of inversion for Z

Published
2017
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66. Spectroscopy of the long-lived excited state in the neutron-deficient nuclides $^{195,197,199}$Po by precision mass measurements

Author

Althubiti, N., Atanasov, D., Blaum, K., Cocolios, T., Goodacre, T., Farooq-Smith, G., Fedorov, D., Fedosseev, V., George, S., Herfurth, F., Heyde, K., Kreim, S., Lunney, D., Lynch, K., Manea, V., Marsh, B., Neidherr, D., Rosenbusch, M., Rossel, R., Rothe, S., Schweikhard, L., Seliverstov, M., Welker, A., Wienholtz, F., Wolf, R., Zuber, K., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), ISOLTRAP, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
FOS: Physical sciences, Nuclear Physics - Experiment, Präzisionsexperimente - Abteilung Blaum, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, Nuclear Experiment
Abstract

Direct mass measurements of the low-spin 3/2− and high-spin 13/2+ states in the neutron-deficient isotopes Po195 and Po197 were performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN. These measurements allow the determination of the excitation energy of the isomeric state arising from the νi13/2 orbital in Po195,197. Additionally, the excitation energy of isomeric states of lead, radon, and radium isotopes in this region were obtained from α-decay chains. These excitation energies complete the knowledge of the energy systematics in the region and confirm that the 13/2+ states remain isomeric, independent of the number of valence neutrons. Direct mass measurements of the low-spin $3/2^{(-)}$ and high-spin $13/2^{(+)}$ states in the neutron-deficient isotopes $^{195}$Po, $^{197}$Po, and high-spin $13/2^{(+)}$ state in $^{199}$Po were performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN. These measurements allow the determination of the excitation energy of the isomeric state arising from the $\nu$i$_{13/2}$ orbital in $^{195,197}$Po. Additionally, the excitation energy of isomeric states of lead, radon, and radium isotopes in this region were obtained from $\alpha$-decay chains. The new excitation energies complete the knowledge of the energy systematics in the region and confirm for the first time that the $13/2^{(+)}$ states remain isomeric, independent of the number of valence neut

Published
2017
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68. Erratum: Masses of exotic calcium isotopes pin down nuclear forces

Author

Wienholtz, F., Beck, D., Blaum, K., Borgmann, Ch., Breitenfeldt, M., Cakirli, R. B., George, S., Herfurth, F., Holt, J. D., Kowalska, M., Kreim, S., Lunney, D., Manea, V., Menéndez, J., Neidherr, D., Rosenbusch, M., Schweikhard, L., Schwenk, A., Simonis, J., Stanja, J., Wolf, R. N., and Zuber, K.

Published
2013
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69. Change in structure between the I = 1/2 states in 181Tl and 177,179Au

Author

Cubiss, J.G., primary, Barzakh, A.E., additional, Andreyev, A.N., additional, Al Monthery, M., additional, Althubiti, N., additional, Andel, B., additional, Antalic, S., additional, Atanasov, D., additional, Blaum, K., additional, Cocolios, T.E., additional, Day Goodacre, T., additional, de Groote, R.P., additional, de Roubin, A., additional, Farooq-Smith, G.J., additional, Fedorov, D.V., additional, Fedosseev, V.N., additional, Ferrer, R., additional, Fink, D.A., additional, Gaffney, L.P., additional, Ghys, L., additional, Gredley, A., additional, Harding, R.D., additional, Herfurth, F., additional, Huyse, M., additional, Imai, N., additional, Joss, D.T., additional, Köster, U., additional, Kreim, S., additional, Liberati, V., additional, Lunney, D., additional, Lynch, K.M., additional, Manea, V., additional, Marsh, B.A., additional, Martinez Palenzuela, Y., additional, Molkanov, P.L., additional, Mosat, P., additional, Neidherr, D., additional, O'Neill, G.G., additional, Page, R.D., additional, Procter, T.J., additional, Rapisarda, E., additional, Rosenbusch, M., additional, Rothe, S., additional, Sandhu, K., additional, Schweikhard, L., additional, Seliverstov, M.D., additional, Sels, S., additional, Spagnoletti, P., additional, Truesdale, V.L., additional, Van Beveren, C., additional, Van Duppen, P., additional, Veinhard, M., additional, Venhart, M., additional, Veselský, M., additional, Wearing, F., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R.N., additional, Zemlyanoy, S.G., additional, and Zuber, K., additional

Published
2018
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70. Precision Mass Measurements of Cr58–63 : Nuclear Collectivity Towards the N=40 Island of Inversion

Author

Mougeot, M., primary, Atanasov, D., additional, Blaum, K., additional, Chrysalidis, K., additional, Goodacre, T. Day, additional, Fedorov, D., additional, Fedosseev, V., additional, George, S., additional, Herfurth, F., additional, Holt, J. D., additional, Lunney, D., additional, Manea, V., additional, Marsh, B., additional, Neidherr, D., additional, Rosenbusch, M., additional, Rothe, S., additional, Schweikhard, L., additional, Schwenk, A., additional, Seiffert, C., additional, Simonis, J., additional, Stroberg, S. R., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2018
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71. Charge radii and electromagnetic moments of At195–211

Author

Cubiss, J. G., primary, Barzakh, A. E., additional, Seliverstov, M. D., additional, Andreyev, A. N., additional, Andel, B., additional, Antalic, S., additional, Ascher, P., additional, Atanasov, D., additional, Beck, D., additional, Bieroń, J., additional, Blaum, K., additional, Borgmann, Ch., additional, Breitenfeldt, M., additional, Capponi, L., additional, Cocolios, T. E., additional, Day Goodacre, T., additional, Derkx, X., additional, De Witte, H., additional, Elseviers, J., additional, Fedorov, D. V., additional, Fedosseev, V. N., additional, Fritzsche, S., additional, Gaffney, L. P., additional, George, S., additional, Ghys, L., additional, Heßberger, F. P., additional, Huyse, M., additional, Imai, N., additional, Kalaninová, Z., additional, Kisler, D., additional, Köster, U., additional, Kowalska, M., additional, Kreim, S., additional, Lane, J. F. W., additional, Liberati, V., additional, Lunney, D., additional, Lynch, K. M., additional, Manea, V., additional, Marsh, B. A., additional, Mitsuoka, S., additional, Molkanov, P. L., additional, Nagame, Y., additional, Neidherr, D., additional, Nishio, K., additional, Ota, S., additional, Pauwels, D., additional, Popescu, L., additional, Radulov, D., additional, Rapisarda, E., additional, Revill, J. P., additional, Rosenbusch, M., additional, Rossel, R. E., additional, Rothe, S., additional, Sandhu, K., additional, Schweikhard, L., additional, Sels, S., additional, Truesdale, V. L., additional, Van Beveren, C., additional, Van den Bergh, P., additional, Wakabayashi, Y., additional, Van Duppen, P., additional, Wendt, K. D. A., additional, Wienholtz, F., additional, Whitmore, B. W., additional, Wilson, G. L., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2018
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72. Erratum: Nuclear deformation in the A≈100 region: Comparison between new masses and mean-field predictions [Phys. Rev. C 96 , 014310 (2017)]

Author

de Roubin, A., primary, Atanasov, D., additional, Blaum, K., additional, George, S., additional, Herfurth, F., additional, Kisler, D., additional, Kowalska, M., additional, Kreim, S., additional, Lunney, D., additional, Manea, V., additional, Minaya Ramirez, E., additional, Mougeot, M., additional, Neidherr, D., additional, Rosenbusch, M., additional, Schweikhard, L., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2018
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73. Binding Energy of Cu79 : Probing the Structure of the Doubly Magic Ni78 from Only One Proton Away

Author

Welker, A., primary, Althubiti, N. A. S., additional, Atanasov, D., additional, Blaum, K., additional, Cocolios, T. E., additional, Herfurth, F., additional, Kreim, S., additional, Lunney, D., additional, Manea, V., additional, Mougeot, M., additional, Neidherr, D., additional, Nowacki, F., additional, Poves, A., additional, Rosenbusch, M., additional, Schweikhard, L., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2017
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74. Nuclear deformation in the A≈100 region: Comparison between new masses and mean-field predictions

Author

de Roubin, A., primary, Atanasov, D., additional, Blaum, K., additional, George, S., additional, Herfurth, F., additional, Kisler, D., additional, Kowalska, M., additional, Kreim, S., additional, Lunney, D., additional, Manea, V., additional, Minaya Ramirez, E., additional, Mougeot, M., additional, Neidherr, D., additional, Rosenbusch, M., additional, Schweikhard, L., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2017
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75. Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region

Author

Manea, V., primary, Ascher, P., additional, Atanasov, D., additional, Barzakh, A. E., additional, Beck, D., additional, Blaum, K., additional, Borgmann, Ch., additional, Breitenfeldt, M., additional, Cakirli, R. B., additional, Cocolios, T. E., additional, Day Goodacre, T., additional, Fedorov, D. V., additional, Fedosseev, V. N., additional, George, S., additional, Herfurth, F., additional, Kowalska, M., additional, Kreim, S., additional, Litvinov, Yu. A., additional, Lunney, D., additional, Marsh, B., additional, Neidherr, D., additional, Rosenbusch, M., additional, Rossel, R. E., additional, Rothe, S., additional, Schweikhard, L., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2017
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76. Precision mass measurements of cesium isotopes—new entries in the ISOLTRAP chronicles

Author

Atanasov, D, primary, Beck, D, additional, Blaum, K, additional, Borgmann, Ch, additional, Cakirli, R B, additional, Eronen, T, additional, George, S, additional, Herfurth, F, additional, Herlert, A, additional, Kowalska, M, additional, Kreim, S, additional, Litvinov, Yu A, additional, Lunney, D, additional, Manea, V, additional, Neidherr, D, additional, Rosenbusch, M, additional, Schweikhard, L, additional, Wienholtz, F, additional, Wolf, R N, additional, and Zuber, K, additional

Published
2017
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77. Constraining the neutron star crust via mass measurements

Author

Althubiti, N, Ascher, P, Atanasov, D, Aymard, F, Bastin, B, Blaum, K, Beck, D, Breitenfeldt, M, Cakirli, R B, Chauveau, P, Cocolios, T E, De France, G, De Oliveira, F, Delahaye, P, Eliseev, S, Eronen, T, George, S, Gulminelli, F, Herfurth, F, Herlert, A, Kowalska, M, Kreim, S, Litvinov, Yu A, Lunney, D, MacCormick, M, Manea, V, Minaya Ramirez, E, Naimi, S, Neidherr, D, Rosenbusch, M, de Roubin, A, Savajols, H, Schweikhard, L, Welker, A, Wienholtz, F, Wolf, R N, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2015

78. Ge and Se beam developments for constraining the neutron star crust via mass measurements

Author

Althubiti, N, Ascher, P, Atanasov, D, Aymard, F, Bastin, B, Blaum, K, Beck, D, Breitenfeldt, M, Cakirli, R B, Chauveau, P, Cocolios, T E, De France, G, De Oliveira, F, Delahaye, P, Eliseev, S, Eronen, T, George, S, Gulminelli, F, Herfurth, F, Herlert, A, Kowalska, M, Kreim, S, Litvinov, Yu A, Lunney, D, MacCormick, M, Manea, V, Minaya Ramirez, E, Naimi, S, Neidherr, D, Rosenbusch, M, de Roubin, A, Savajols, H, Schweikhard, L, Welker, A, Wienholtz, F, Wolf, R N, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2015

81. In-source laser spectroscopy of mercury isotopes

Author

Gaffney, Liam Paul, Day Goodacre, Thomas, Andreyev, Andrei, Seliverstov, Maxim, Althubiti, N, Andel, B, Antalic, S, Atanasov, D, Barzakh, A E, Blaum, K, Billowes, J, Cocolios, T E, Cubiss, J, Farooq-Smith, G, Fedorov, D V, Fedosseev, V N, Ferrer, R, Flanagan, K T, Ghys, L, Granados, C, Gottberg, A, Herfurth, F, Huyse, M, Jenkins, D G, Kisler, D, Kreim, S, Kron, T, Kudryavtsev, Yu, Lunney, D, Lynch, K M, Marsh, B A, Manea, V, Mendonca, T M, Molkanov, P L, Neidherr, D, Raabe, R, Ramos, J P, Raeder, S, Rapisarda, E, Rosenbusch, M, Rossel, R E, Rothe, S, Schweikhard, L, Sels, S, Stora, T, Tsekhanovich, I, Van Beveren, C, Van Duppen, P, Veinhard, M, Wadsworth, R, Welker, A, Wienholtz, F, Wendt, K, Wilson, G L, Witkins, S, Wolf, R, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2014

82. Search for $\beta$-transitions with the lowest decay energy for a determination of the neutrino mass

Author

Eliseev, S, Althubiti, N, Ascher, P, Atanasov, D, Blaum, K, Böhm, Ch, Borgmann, Ch, Breitenfeldt, M, Cakirli, R B, Cocolios, T E, Eronen, T, Filianin, P, George, S, Goncharov, M, Herfurth, F, Herlert, A, Kisler, D, Kowalska, M, Kreim, S, Litvinov, Yu A, Lunney, D, Manea, V, Minaya Ramirez, E, Naimi, S, Neidherr, D, Novikov, Yu, Rosenbusch, M, de Roubin, A, Schweikhard, L, Wienholtz, F, Welker, A, Wolf, R N, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2014

83. Penning-trap mass measurements with ISOLTRAP

Author

Ascher, P, Atanasov, D, Blaum, K, Boehm, Ch, Borgmann, Ch, Breitenfeldt, M, Cakirli, R B, Cocolios, T E, Eliseev, S, Eronen, T, George, S, Herfurth, F, Herlert, A, Kisler, D, Kowalska, M, Kreim, S, Litvinov, Yu A, Lunney, D, Manea, V, Minaya-Ramirez, E, Naimi, S, Neidherr, D, Rosenbusch, M, Schweikhard, L, Wienholtz, F, Welker, A, Wolf, R N, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2014

84. High precision mass measurements of odd-odd T=1 nuclides for the study of the Isobaric Multiplet Mass Equation

Author

MacCormick, M, Ascher, P, Atanasov, D, Blaum, K, Boehm, Ch, Borgmann, Ch, Breitenfeldt, M, Cakirli, R B, Cocolios, T E, Eliseev, S, Eronen, T, George, S, Herfurth, F, Herlert, A, Kisler, D, Kowalska, M, Kreim, S, Litvinov, Yu A, Lunney, D, Manea, V, Minaya Ramirez, E, Naimi, S, Neidherr, D, Rosenbusch, M, de Roubin, A, Schweikhard, L, Welker, A, Wienholtz, F, Wolf, R N, Zuber, K, Jokinen, A, and Moore, I D

Subjects
Detectors and Experimental Techniques
Published
2014

85. Yield study and optimization of nuclear isotopes for cancer treatment and diagnostics with ISOLTRAP/CERN

Author

Welker, A., primary, Althubiti, N.A.S, additional, Atanasov, D., additional, Blaum, K., additional, Herfurth, F., additional, Kreim, S., additional, Koester, U., additional, Lunney, D., additional, Mougeot, M., additional, Manea, V., additional, Neidherr, D., additional, Rosenbusch, M., additional, Schweikhard, L., additional, Wienholtz, F., additional, Wolf, R., additional, and Zuber, K., additional

Published
2016
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86. Probing the N=32 Shell Closure below the Magic Proton Number Z=20: Mass Measurements of the Exotic Isotopes K-52,K-53

Author

Rosenbusch, M, Ascher, P, Atanasov, D, Barbieri, C, Beck, D, Blaum, K, Borgmann, C, Breitenfeldt, M, Cakirli, RB, Cipollone, A, George, S, Herfurth, F, Kowalska, M, Kreim, S, Lunney, D, Manea, V, Navratil, P, Neidherr, D, Schweikhard, L, Soma, V, Stanja, J, Wienholtz, F, Wolf, RN, Zuber, K, Rosenbusch, M, Ascher, P, Atanasov, D, Barbieri, C, Beck, D, Blaum, K, Borgmann, C, Breitenfeldt, M, Cakirli, RB, Cipollone, A, George, S, Herfurth, F, Kowalska, M, Kreim, S, Lunney, D, Manea, V, Navratil, P, Neidherr, D, Schweikhard, L, Soma, V, Stanja, J, Wienholtz, F, Wolf, RN, and Zuber, K

Published
2015

87. Collective degrees of freedom of neutron-rich A ≈ 100 nuclei and the first mass measurement of the short-lived nuclide 100Rb

Author

Manea, V., Atanasov, D., Beck, D., Blaum, K., Borgmann, C., Cakirli, R., Eronen, T., George, S., Herfurth, F., Herlert, A., Kowalska, M., Kreim, S., Litvinov, Y., Lunney, D., Neidherr, D., Rosenbusch, M., Schweikhard, L., Wienholtz, F., Wolf, R., and Zuber, K.

Subjects
Nuclear Theory, Physics::Atomic Physics, Nuclear Experiment
Abstract

The mass surface in the A ∼ 100 region of the nuclear chart is extended by the measurement of the 98–100Rb isotopes with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The mass of 100Rb is determined for the first time. The studied nuclides mark the known low-Z frontier of the shape transition at N=60. To describe the shape evolution towards the krypton isotopic chain, a theoretical analysis is presented in the framework of the Hartree-Fock-Bogoliubov approach. The importance of the pairing interaction for describing the extent and strength of the region of quadrupole deformation is emphasized. A later transition to large prolate deformation or, alternatively, the predominance of oblate deformation is proposed as explanation for the different behavior of the krypton isotopes. Octupole collectivity is explored as a possible mechanism for the evolution of two-neutron separation energies around N=56.

Published
2013

88. Plumbing neutron stars to new depths with the binding energy of the rare isotope 82Zn: F. Wienholtz, K. Zuber

Author

Wolf, R.N., Beck, D., Blaum, Klaus, Bohm, C., Borgmann, Ch., Breitenfeldt, Martin, Chamel, Nicolas, Goriely, Stéphane, Herfurth, Frank, Kowalska, Magdalena, Kreim, Susanne, Lunney, David, Manea, V., Minaya Ramirez, E., Naimi, Sarah, Neidherr, D., Pearson, Michael J., Rosenbusch, Marco, Schweikhard, Lutz, Stanja, J., Wienholtz, F., and Zuber, K.

Subjects
Physique atomique et nucléaire, Astrophysique
Abstract

info:eu-repo/semantics/published

Published
2013

89. Offline commissioning of the old and new HITRAP RFQ

Author

Maier, M., Dermati, K., Trebis, M., Vormann, H., Vorobjev, G., Yaramyshev, S., Werle, P., Herfurth, F., Kammer, E., König, M., Kotovskiy, N., Müller, M., Neidherr, D., Repnow, R., and Scheurich, E.

Published
2013

91. Collective degrees of freedom of neutron-rich A approximate to 100 nuclei and the first mass measurement of the short-lived nuclide Rb-100

Author

Manea, V., Atanasov, D., Beck, D., Blaum, K., Borgmann, C., B. Cakirli, R., Eronen, T., George, S., Herfurth, F., Herlert, A., Kowalska, M., Kreim, S., A. Litvinov, Yu., Lunney, D., Neidherr, D., Rosenbusch, M., Schweikhard, L., Wienholtz, F., N. Wolf, R., Zuber, K., Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), CSNSM SNO, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM)

Subjects
CHARGE RADII, ATOMIC-NUCLEI, Nuclear Theory, GROUND-STATE PROPERTIES, MEAN-FIELD MODELS, RAMSEY METHOD, PENNING TRAP, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], LASER-SPECTROSCOPY, SPECTROMETRY, ISOTOPES, Physics::Atomic Physics, SHELL-MODEL DESCRIPTION, Nuclear Experiment
Abstract

The mass surface in the A similar to 100 region of the nuclear chart is extended by the measurement of the Rb98-100 isotopes with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The mass of Rb-100 is determined for the first time. The studied nuclides mark the known low-Z frontier of the shape transition at N = 60. To describe the shape evolution towards the krypton isotopic chain, a theoretical analysis is presented in the framework of the Hartree-Fock-Bogoliubov approach. The importance of the pairing interaction for describing the extent and strength of the region of quadrupole deformation is emphasized. A later transition to large prolate deformation or, alternatively, the predominance of oblate deformation is proposed as explanation for the different behavior of the krypton isotopes. Octupole collectivity is explored as a possible mechanism for the evolution of two-neutron separation energies around N = 56.

Published
2013
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92. Seeking the purported magic number N= 32 with high-precision mass spectrometry

Author

Kreim, S, Beck, D, Blaum, K, Bohm, Ch, Borgmann, Ch, Breitenfeldt, M, Cakirli, R B, Herfurth, F, Kowalska, M, Litvinov, Y, Lunney, D, Manea, V, Naimi, S, Neidherr, D, Rosenbusch, M, Schweikhard, L, Stanja, J, Stora, Th, Wienholtz, F, Wolf, R N, and Zuber, K

Subjects
Detectors and Experimental Techniques
Abstract

Accounting for the appearance of new magic numbers represents an exacting test for nuclear models. Binding energies o er a clear signature for the presence (or dis- appearance) of shell closures. To determine the strength of the purported N = 32 shell closure, we propose using the Penning-trap spectrometer ISOLTRAP for mass measure- ments of N = 34 isotones 58 Cr ( Z = 24), 55 Sc ( Z = 21) and 54 Ca ( Z = 20), as well as the N = 32 isotones 53 Sc and 52 Ca. We also propose measuring the mass of 60 Cr to test the shell model prediction of a new magic number at N = 34. In addition to the Penning-trap system at ISOLTRAP, we intend to use the newly commissioned multi-re ection time-of- ight mass separator, which enables direct mass measurements on nuclei with half-lives below 50 ms.

Published
2011

93. Search for new candidates for the neutrino-oriented mass determination by electron-capture

Author

Beck, D, Blaum, K, Block, M, Boehm, Ch, Borgmann, Ch, Breitenfeldt, M, Eliseev, S, Fedoseev, V, George, S, Herfurth, F, Herlert, A, Kluge, H -J, Kowalska, M, Kreim, S, Lunney, D, Manea, V, Naimi, S, Neidherr, D, Novikov, Yu N, Rosenbusch, M, Schwarz, S, Schweikhard, L, Seliverstov, M, Sokolov, A, Stanja, J, Wienholtz, F, Wolf, R N, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2011

95. Precision Mass Measurements ofCd129–131and Their Impact on Stellar Nucleosynthesis via the Rapid Neutron Capture Process

Author

Atanasov, D., primary, Ascher, P., additional, Blaum, K., additional, Cakirli, R. B., additional, Cocolios, T. E., additional, George, S., additional, Goriely, S., additional, Herfurth, F., additional, Janka, H.-T., additional, Just, O., additional, Kowalska, M., additional, Kreim, S., additional, Kisler, D., additional, Litvinov, Yu. A., additional, Lunney, D., additional, Manea, V., additional, Neidherr, D., additional, Rosenbusch, M., additional, Schweikhard, L., additional, Welker, A., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2015
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97. Masses of r-process waiting-point nuclides

Author

Beck, D, Blaum, K, Boehm, Ch, Borgmann, Ch, Breitenfeldt, M, Cakirli, R B, George, S, Herfurth, F, Herlert, A, Kowalska, M, Kreim, S, Lunney, D, Naimi, S, Neidherr, D, Rosenbusch, M, Schwarz, S, Schweikhard, L, Wolf, N R, and Zuber, K

Subjects
Detectors and Experimental Techniques
Published
2010

98. Probing theN=32Shell Closure below the Magic Proton NumberZ=20: Mass Measurements of the Exotic IsotopesK52,53

Author

Rosenbusch, M., primary, Ascher, P., additional, Atanasov, D., additional, Barbieri, C., additional, Beck, D., additional, Blaum, K., additional, Borgmann, Ch., additional, Breitenfeldt, M., additional, Cakirli, R. B., additional, Cipollone, A., additional, George, S., additional, Herfurth, F., additional, Kowalska, M., additional, Kreim, S., additional, Lunney, D., additional, Manea, V., additional, Navrátil, P., additional, Neidherr, D., additional, Schweikhard, L., additional, Somà, V., additional, Stanja, J., additional, Wienholtz, F., additional, Wolf, R. N., additional, and Zuber, K., additional

Published
2015
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99. Massenmessungen zur Untersuchung der Kernstruktur von Kr und Ag an Isoltrap

Author

Borgmann, C., Audi, G., Beck, D., Blaum, K., Böhm, C., Breitenfeldt, M., Fink, D., George, S., Herfurth, F., Herlert, A., Kowalska, M., Kreim, S., Lunney, D., Naimi, S., Neidherr, D., Rosenbusch, M., Schwarz, S., Schweikhard, L., CSNSM SNO, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and Hadrossek, Christine

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

Mit dem Penningfallen-Massenspektrometer Isoltrap am Isotopen-Separator Isolde (Cern) können die Massen von kurzlebigen Radionukliden mit relativen Genauigkeiten von 10−8 gemessen werden. 2009 wurden unter anderem die Massen und damit die Kernbindungsenergien von 96,97Kr und 122−124Ag bestimmt. Ziel dieser Messungen war die Untersuchungen der Kernstruktur, außerdem ermöglichen sie Tests der Genauigkeit von Massenmodellen. Durch die neuen Massenwerte für neutronenreiche Silbernuklide wurden zuvor beobachtete Auffälligkeiten in den Zweineutronenseparationsenergien der Silber-Isotopenkette korrigiert. Ihr Verhalten entspricht nun wie erwartet dem für sphärische Kerne. Die erstmals gemessenen Krypton-Massen liefern einen wichtigen Beitrag in der Diskussion um den plötzlichen Wechsel von sphärischen zu deformierten Kernen in der Region um A = 100. Im Rahmen dieses Beitrags werden die oben erwähnten Messungen vorgestellt.

Published
2010

100. A new route for neutrino mass determination using the electron capture of 194Hg

Author

Beck, D., Blaum, K., Böhm, C., Breitenfeldt, M., Eliseev, S., Fedoseev, V., George, S., Herfurth, F., Herlert, A., Kowalska, M., Lunney, D., Naimi, S., Neidherr, D., Novikov, Y., Schwarz, S., Schweikhard, L., Seliverstov, M., Zuber, K., CSNSM SNO, Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Experiment, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

The electron neutrino mass is of highest importance for many fields of physics. To measure the neutrino mass, beta-decay spectra are typically used. Here an alternative way to determine the neutrino mass, using an electron capture in 194Hg will be presented. Direct mass measurements of 194Hg and its daughter nucleus 194Au were performed at the high-precision Penning trap mass spectrometer ISOLTRAP at the ISOLDE facility (CERN). The QEC-value obtained by the mass difference of these nuclei leads to the conclusion that the K-capture is forbidden, thus an L-capture is assumed. For further investigations a measurement using a cryogenic micro-calorimeter is suggested. From this, a de-excitation spectrum is obtained which can be compared to the QEC-value in order to determine the neutrino mass.

Published
2010

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