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Your search keyword '"Pillet, N."' showing total 17 results
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17 results on '"Pillet, N."'

6. Delayedγ-ray and conversion-electron spectroscopy ofA=97fission fragments

Author

Rudigier, M., primary, Simpson, G. S., additional, Daugas, J. M., additional, Blazhev, A., additional, Fransen, C., additional, Gey, G., additional, Hackstein, M., additional, Jolie, J., additional, Köster, U., additional, Malkiewicz, T., additional, Materna, T., additional, Pfeiffer, M., additional, Ramdhane, M., additional, Régis, J.-M., additional, Rother, W., additional, Thomas, T., additional, Warr, N., additional, Wilmsen, D., additional, Le Bloas, J., additional, and Pillet, N., additional

Published
2013
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12. Collective structure of theN=40isotones

Author

Gaudefroy, L., primary, Obertelli, A., additional, Péru, S., additional, Pillet, N., additional, Hilaire, S., additional, Delaroche, J. -P., additional, Girod, M., additional, and Libert, J., additional

Published
2009
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17. Description of nuclear systems with a self-consistent configuration-mixing approach: Theory, algorithm, and application to the 12C test nucleus.

Author

Robin, C., Pillet, N., Arteaga, D. Peña, and Berger, J.-F.

Subjects
*PHYSICS periodicals, *NUCLEAR structure, *SELF-consistent field theory, *GREEN'S functions
Abstract

Background: Although self-consistent multiconfiguration methods have been used for decades to address the description of atomic and molecular many-body systems, only a few trials have been made in the context of nuclear structure. Purpose: This work aims at the development of such an approach to describe in a unified way various types of correlations in nuclei in a self-consistent manner where the mean-field is improved as correlations are introduced. The goal is to reconcile the usually set-apart shell-model and self-consistent mean-field methods. Method: This approach is referred to as "variational multiparticle-multihole configuration mixing method." It is based on a double variational principle which yields a set of two coupled equations that determine at the same time the expansion coefficients of the many-body wave function and the single-particle states. The solution of this problem is obtained by building a doubly iterative numerical algorithm. Results: The formalism is derived and discussed in a general context, starting from a three-body Hamiltonian. Links to existing many-body techniques such as the formalism of Green's functions are established. First applications are done using the two-body D1S Gogny effective force. The numerical procedure is tested on the 12C nucleus to study the convergence features of the algorithm in different contexts. Ground-state properties as well as single-particle quantities are analyzed, and the description of the first 2+ state is examined. Conclusions: The self-consistent multiparticle-multihole configuration mixing method is fully applied for the first time to the description of a test nucleus. This study makes it possible to validate our numerical algorithm and leads to encouraging results. To test the method further, we will realize in the second article of this series a systematic description of more nuclei and observables obtained by applying the newly developed numerical procedure with the same Gogny force. As raised in the present work, applications of the variational multiparticle-multihole configuration mixing method will, however, ultimately require the use of an extended and more constrained Gogny force. [ABSTRACT FROM AUTHOR]

Published
2016
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