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6 results on '"Hermann Wollnik"'

1. New mass anchor points for neutron-deficient heavy nuclei from direct mass measurements of radium and actinium isotopes

Author

Hiroari Miyatake, Kouji Morimoto, Daiya Kaji, Kosuke Morita, M. MacCormick, Y. Ito, Mikael Reponen, Peter Schury, J.Y. Moon, A. Takamine, S. Kimura, T. Niwase, Akira Ozawa, Hermann Wollnik, Hiroyuki Koura, Michiharu Wada, Hiromitsu Haba, Marco Rosenbusch, I. Murray, T. Tanaka, Institut de Physique Nucléaire d'Orsay (IPNO), 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), 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 de Physique Nucléaire d'Orsay ( IPNO ), 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
Physics, Isotope, 010308 nuclear & particles physics, chemistry.chemical_element, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Mass spectrometry, 01 natural sciences, 7. Clean energy, Ion, Nuclear physics, Radium, Actinium, Recoil, chemistry, 0103 physical sciences, Neutron, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), 010306 general physics, Spectroscopy, Nuclear Experiment
Abstract

The masses of the exotic isotopes $^{210\ensuremath{-}214}\mathrm{Ac}$ and $^{210\ensuremath{-}214}\mathrm{Ra}$ have been measured with a multireflection time-of-flight mass spectrograph. These isotopes were obtained in flight as fusion-evaporation products behind the gas-filled recoil ion separator GARIS-II at RIKEN. The new direct mass measurements serve as an independent and direct benchmark for existing $\ensuremath{\alpha}\text{\ensuremath{-}}\ensuremath{\gamma}$ spectroscopy data in this mass region. Further, new mass anchor points are set for U and Np nuclei close to the $N=126$ shell closure for a future benchmark of the $Z=92$ subshell for neutron-deficient heavy isotopes. Our mass results are in general in good agreement with the previously indirectly determined mass values. Together with the measurement data, reasons for possible mass ambiguities from decay-data links between ground states are discussed.

Published
2018

2. High Precision Mass Measurements of Intermediate-mass Neutron-deficient Nuclei via MRTOF-MS

Author

M. MacCormick, Y. X. Watanabe, Kouji Morimoto, Peter Schury, Daiya Kaji, Michiharu Wada, J.Y. Moon, A. Takamine, S. Kimura, Yoshikazu Hirayama, I. Murray, Y. Ito, Marco Rosenbusch, T. Tanaka, Hiromitsu Haba, M. Mukai, Hiroari Miyatake, Hermann Wollnik, Takashi Hashimoto, Hendrik Schatz, Akira Ozawa, Institut de Physique Nucléaire d'Orsay (IPNO), 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
Nuclear physics, Materials science, 010308 nuclear & particles physics, 0103 physical sciences, Neutron, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010306 general physics, 01 natural sciences, 7. Clean energy
Abstract

International audience; Precision mass measurements of ^63Cu, ^64–66Zn, ^65–67Ga, ^65–67Ge, ^67As, ^79,81Br, ^79Kr, ^80,81Rb, and ^79,80Sr were performed with a multireflection time-of-flight mass spectrograph. The masses of these nuclides were determined by the single reference method using isobaric references. In order to obtain precise results, time-of-flight drift compensations were performed and a phenomenological fit function was employed. Consequently, in the case of ^65Ga, a mass uncertainty of 2.1 keV, corresponding to a relative precision of \(\delta m/m = 3.5 \times 10^{ - 8}\), was obtained and the mass value is in excellent agreement with the 2016 Atomic Mass Evaluation.

Published
2017

3. Isospin Dependence in Odd-Even Staggering of Nuclear Binding Energies

Author

Yu. A. Litvinov, C. Kozhuharov, G. Münzenberg, K. E. G. Lobner, F. Nolden, Y. N. Novikov, F. Attallah, Marc Hausmann, T. J. Bürvenich, H. J. Kluge, O. Klepper, T. Radon, Hermann Wollnik, K. Beckert, M. Steck, Stefan Typel, C. Scheidenberger, B. Franzke, Z. Patyk, M. Falch, F. Bosch, D. G. Madland, Joachim A. Maruhn, Hans Geissel, T. Kerscher, G. Audi, 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
nuclear binding energy, Proton, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 21.10.Dr, 21.60.-n, 25.70.Mn, Binding energy, General Physics and Astronomy, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Nuclear physics, Nuclear Theory (nucl-th), 0103 physical sciences, Nuclide, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Nuclear shell model, Observable, nuclear mass, nuclear shell model, Isospin, Pairing, Nuclear binding energy, Atomic physics
Abstract

The FRS-ESR facility at GSI provides unique conditions for precision measurements of large areas on the nuclear mass surface in a single experiment. Values for masses of 604 neutron-deficient nuclides (30, Physics Review Letters 95 (2005) 042501 http://link.aps.org/abstract/PRL/v95/e042501

Published
2005

4. Rosetta Orbiter Spectrometer for Ion and Neutral Analysis—ROSINA

Author

B. Wilken, E. Kopp, Stefano Livi, E. G. Shelley, D. T. Young, J. H. Waite, Lennard A. Fisk, Fritz Gliem, Hermann Wollnik, Peter Wurz, Tamas I. Gombosi, Joachim Woch, G. R. Carignan, Stephen A. Fuselier, H. Rème, A. G. Ghielmetti, J. L. Bertaux, E. Arijs, A. Korth, Hans Balsiger, Jean-Jacques Berthelier, Kathrin Altwegg, Christian Mazelle, J. A. Sauvaud, Peter Bochsler, Peter Eberhardt, Physikalisches Institut [Bern], Universität Bern [Bern], Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Service d'aéronomie (SA), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude des environnements terrestre et planétaires (CETP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Space Physics Research Laboratory [Ann Arbor] (SPRL), University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Lockheed Martin Advanced Technology Center (ATC), Technische Universität Braunschweig = Technical University of Braunschweig [Braunschweig], Max-Planck-Institut für Aeronomie (MPI Aeronomie), Max-Planck-Gesellschaft, Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Lockheed Martin Palo Alto Research Laboratories, Lockheed Martin Corporation, Space Science Division [San Antonio], Southwest Research Institute [San Antonio] (SwRI), Physikalisches Institut [Gießen], Justus-Liebig-Universität Gießen (JLU), Universität Bern [Bern] (UNIBE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), and Justus-Liebig-Universität Gießen = Justus Liebig University (JLU)

Subjects
Physics, Atmospheric Science, Ion flow, 010504 meteorology & atmospheric sciences, Resolution (mass spectrometry), Spectrometer, Aerospace Engineering, Astronomy and Astrophysics, 7. Clean energy, 01 natural sciences, law.invention, Astrobiology, Ion, Orbiter, Geophysics, 13. Climate action, Space and Planetary Science, law, [SDU]Sciences of the Universe [physics], 0103 physical sciences, Wide dynamic range, High mass, General Earth and Planetary Sciences, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences
Abstract

International audience; The Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) will answer outstanding questions concerning the main objectives of the mission. To accomplish the very demanding objectives, ROSINA will have unprecedented capabilities, including: very wide mass range from 1 amu to >300 amu; very high mass resolution (ability to resolve CO from N2 and 13C from 12CH); very wide dynamic range and high sensitivity; the ability to determine cometary gas and ion flow velocities and temperatures.

Published
1998

5. Direct mass measurements on francium isotopes and deduced masses for odd-Z neighbouring elements

Author

Francois Touchard, C. Thibault, M. Epherre, G. Huber, Hermann Wollnik, R. Klapisch, G. Audi, 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), ISOLDE, and Lorgeril, Jocelyne

Subjects
Physics, Nuclear and High Energy Physics, Isotope, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], 010308 nuclear & particles physics, chemistry.chemical_element, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Mass spectrometry, 7. Clean energy, 01 natural sciences, Atomic mass, Francium, Nuclear physics, Mass, chemistry, 0103 physical sciences, Atomic physics, 010306 general physics
Abstract

The masses of 204–210, 212Fr and 224–228Fr have been determined with direct on-line mass spectrometry. From previously known Qa values, the masses of 28 isotopes of Pa, Ac, At, Bi and Tl are deduced. All these experimental masses are compared with the current mass predictions.

Published
1980

6. Energy and angular distributions for Ar ions penetrating solids

Author

G. Münzenberg, Hans Geissel, Hermann Wollnik, K.B. Winterbon, W. Mittig, Th. Schwab, A. Gillibert, P. Armbruster, R.E. Olson, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, 010506 paleontology, Nuclear and High Energy Physics, Energy loss, Spectrometer, Scattering, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Ion, 0103 physical sciences, Stopping power (particle radiation), Atomic physics, Nuclear Experiment, 010306 general physics, Instrumentation, Energy (signal processing), ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences
Abstract

Precise energy and angular distributions of 85.38 MeV/u Ar ions in solids are measured with the high-resolution spectrometer SPEG at GANIL. The nonuniformities of the target thickness were investigated with a laser-interferometric method. Stopping power, energy loss straggling, and angular scattering data are presented and compared with experimental data and theories.

Published
1989

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