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Your search keyword '"Smit F.D., Lindsay R., Foertsch S.V."' showing total 5 results
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5 results on '"Smit F.D., Lindsay R., Foertsch S.V."'

1. Angular distribution of protons emitted from oriented nuclei : toward imaging single-particle wave functions

Author

N. Carjan, D. D. Strottman, Patrick Talou, Chambon, Pascale, and Smit F.D. Lindsay R. Foertsch S.V.

Subjects
Physics, Matrix (mathematics), Wave–particle duality, Metastability, Nuclear Theory, Nuclear structure, Observable, Nuclear Experiment, Nucleon, Wave function, Quantum, Computational physics
Abstract

A major drawback of most quantum mechanical measurements is that they produce only quantities averaged over coordinates or time; nuclear physics is no exception. There is, however, an observable (the angular distribution with respect to the deformation axis of single nucleons emitted from metastable states in oriented nuclei) that is directly related to the spatial distribution of the single-particle wave function, as will be shown in this paper. It will also be argued that measuring probability densities of nucleons in nuclei (not only matrix elements) is more promising and that it should become a new trend in evaluating our understanding of nuclear structure in the future.

Published
2000

2. High-Spin States in the Transitional Palladium Nuclei Observed in Heavy-Ion Induced Fission

Author

E. Gueorguieva, N. Schulz, T. Kutsarova, P. Petkow, H. Sergolle, M. G. Porquet, Josette Duprat, Anna Wilson, S. Bouneau, R. Lucas, A. Minkova, F. Hoellinger, I. Deloncle, C. Bourgeois, B. J. P. Gall, Ts. Venkova, C. Gautherin, F. Azaiez, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (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 de Physique Nucléaire d'Orsay (IPNO), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Smit F.D. Lindsay R. Foertsch S.V.

Subjects
Physics, Spin states, 010308 nuclear & particles physics, Fission, Nuclear Theory, Radiochemistry, Gamma ray, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Molecular physics, Spectral line, 0103 physical sciences, Potential energy surface, Quasiparticle, Nuclear fusion, Nuclear Experiment, 010306 general physics, Spontaneous fission
Abstract

The low-spin collective excitations of even-even Pd nuclei in the A ≈ 110 mass region indicate a structural transition from an anharmonic vibrator to a gamma-soft rotor. This observation is supported by recent calculations of the potential energy surfaces using different types of mean field approaches. In particular, prolate-to-oblate shape transition has been predicted at 111Pd [1]. Experimental evidence for a shape change or shape coexistence can be obtained by high-spin studies of these transitional nuclei. Band crossings in the odd-N Pd nuclei are especially important to understand the origin of the alignments. No band structures built on the low-lying states were known in heavier odd Pd nuclei (A≥109). High-spin states in these nuclei cannot be populated using fusion-evaporation reactions. The heavier neutron-rich 112,114,116Pd nuclei have been studied from spontaneous fission of 252Cf [2]. In this work the less neutron-rich Pd nuclei have been produced as fission fragments following the fusion reactions 28Si + 176Yb at 145 MeV. The 28Si beam was provided by the Vivitron accelerator in Strasbourg. Gamma rays were recorded with the EUROGAM2 array [3]. The level schemes were constructed by examining γ- spectra extracted from two and three dimensional matrices.

Published
2000
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3. Systematics of terminating configurations in A $\approx$ 100 Pd nuclei

Author

Nyako, B.M., Gizon, J., Gizon, A., Timar, J., Zolnai, L., Perez, G.E., Dombradi, Zs., Sohler, D., Boston, A.J., Joss, D.T., Paul, E.S., Semple, A.T., O'Brien, N.J., Parry, C.M., Afanasjev, A.V., Ragnarsson, I., bibliotheque, LPSC, Smit F.D. Lindsay R. Foertsch S.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
documents supplier, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Use distribution, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], mathematical model
Abstract

This article synthesizes our published works as far as articles circulation of a documents supplier is concerned. It explains the mathematical model and recall the main results obtained. New ones complete previous ones and show a wider prospect of our model fixing it to former results which refer to bibliometric works about mathematical models of circulation.

Published
2000

4. In-beam gamma spectroscopy of very neutron-rich nuclei at GANIL

Author

C. Borcea, S. Leenhardt, I. Deloncle, M. G. Saint-Laurent, Z. Dlouhy, Yu-E. Penionzhkevich, M. Lewitowicz, O. Sorlin, M. Belleguic, M. J. Lopez, A. Gillibert, C. Donzaud, Ch. Bourgeois, F. Pougheon, H. Savajols, J. M. Daugas, F. Azaiez, M. Stanoiu, M. G. Porquet, F. de Oliveira, J. C. Angélique, S. Grévy, J. Kiener, Josette Duprat, D. Guillemaud-Mueller, A.C. Mueller, N. L. Achouri, J. E. Sauvestre, Yu. Sobolev, W. Shuying, Institut de Physique Nucléaire d'Orsay (IPNO), 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), 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)-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), Smit F.D. Lindsay R. Foertsch S.V., 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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Robert, Suzanne

Subjects
Physics, Isotope, 010308 nuclear & particles physics, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Theory, Gamma ray, Coulomb excitation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Condensed Matter Physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Nuclear physics, Excited state, 0103 physical sciences, Neutron, Gamma spectroscopy, Atomic physics, Nuclear Experiment, 010306 general physics, Ground state, Mathematical Physics, Beam (structure)
Abstract

The structure of nuclei far from stability can be investigated by means of in-beam gamma spectroscopy using both stable and radioactive beams. Two such experiments have been recently performed at GANIL. i) Secondary beams of neutron-rich Ge, Zn and Ni isotopes around N=40 were produced from the fragmentation of a primary 86 Kr beam, and analyzed by means of the LISE3 spectrometer. For the transitions between the 0+ ground state and the first 2+ state, B(E2) values have been extracted from Coulomb excitation cross-section measurement. Some of the obtained results related to the effectiveness of the N=40 spherical sub-shell closure are discussed. ii) In-beam γ-spectroscopy of neutron-rich nuclei around 32Mg produced by fragmentation of 36S have been performed recently. Gamma decay of relatively higher excited states have been measured in a large number of exotic light nuclei. Preliminary results obtained in a number of neutron-rich nuclei around N=20 are presented.

Published
1999

5. News ideas in nuclear structure physics

Author

Rowley, N., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Smit F.D., Lindsay R., Foertsch S.V., Heyd, Yvette, and Smit F.D., Lindsay R., Foertsch S.V.

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Published
1999

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