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You searched for subject:(Fusion cross sections). Showing records 1 – 2 of 2 total matches.

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1. Bourgin, Dominique. Réactions de fusion entre ions lourds par effet tunnel quantique : le cas des collisions entre calcium et nickel : Heavy-ion fusion reactions through quantum tunneling : collisions between calcium and nickel isotopes.

Degree: Docteur es, Physique, 2016, Université de Strasbourg

Les réactions de fusion-évaporation et de transfert de nucléons entre ions lourds à des énergies proches de la barrière de Coulomb jouent un rôle essentiel dans l’étude de la structure nucléaire et des mécanismes de réaction. Dans le cadre de cette thèse, deux expériences de fusion-évaporation et de transfert de nucléons ont été réalisées au Laboratoire National de Legnaro en Italie : 40Ca+58Ni et 40Ca+64Ni. Dans une première expérience, les sections efficaces de fusion de 40Ca+58,64Ni ont été mesurées à des énergies au-dessus et en dessous de la barrière de Coulomb et ont été interprétées à l’aide de calculs en voies couplées et Hartree-Fock dépendants du temps (TDHF). Les résultats montrent l’importance de l’excitation à un phonon octupolaire dans le noyau 40Ca et les excitations à un phonon quadripolaire dans les noyaux 58Ni et 64Ni, ainsi que l’importance des voies de transfert de nucléons dans le système riche en neutrons 40Ca+64Ni. Dans une expérience complémentaire, les probabilités de transfert de nucléons de 40Ca+58,64Ni ont été mesurées dans le même domaine d’énergie que l’expérience précédente et ont été interprétées en effectuant des calculs TDHF+BCS. Les résultats confirment l’importance des voies de transfert de nucléons dans 40Ca+64Ni. Une description conjointe des probabilités de transfert de nucléons et des sections efficaces de fusion a été réalisée pour les deux réactions étudiées en utilisant une approche en voies couplées.

Heavy-ion fusion-evaporation and nucleon transfer reactions at energies close to the Coulomb barrier play an essential role in the study of nuclear structure and reaction dynamics. In the framework of this PhD thesis, two fusion-evaporation and nucleon transfer experiments have been performed at the Laboratori Nazionali di Legnaro in Italy : 40Ca+58Ni and 40Ca+64Ni. In a first experiment, fusion cross sections for 40Ca+58,64Ni have been measured from above to below the Coulomb barrier and have been interpreted by means of coupled-channels and Time-Dependent Hartree-Fock (TDHF) calculations. The results show the importance of the one-phonon octupole excitation in the 40Ca nucleus and the one-phonon quadrupole excitations in the 58Ni and 64Ni nuclei, as well as the importance of the nucleon transfer channels in the neutron-rich system 40Ca+64Ni. In a complementary experiment, nucleon transfer probabilities for 40Ca+58,64Ni have been measured in the same energy region as the previous experiment and have been interpreted by performing TDHF+BCS calculations. The results confirm the importance of nucleon transfer channels in 40Ca+64Ni. A simultaneous description of the nucleon transfer probabilities and the fusion cross sections has been performed for both reactions, using a coupled-channels approach.

Advisors/Committee Members: Courtin, Sandrine (thesis director).

Subjects/Keywords: Réactions de fusion-évaporation; Sections efficaces de fusion; Distributions de barrières; Calculs en voies couplées; Calculs Hartree-Fock dépendants du temps; Réactions de transfert de nucléons; Distributions de la chaleur de réaction; Probabilités de transfert de nucléons; Fusion-evaporation reactions; Fusion cross sections; Barrier distributions; Coupled- channels calculations; Time-dependent Hartree-Fock calculations; Nucleon transfer reactions; Q-value distributions; Nucleon transfer probabilities; 539.7

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Bourgin, D. (2016). Réactions de fusion entre ions lourds par effet tunnel quantique : le cas des collisions entre calcium et nickel : Heavy-ion fusion reactions through quantum tunneling : collisions between calcium and nickel isotopes. (Doctoral Dissertation). Université de Strasbourg. Retrieved from http://www.theses.fr/2016STRAE023

Chicago Manual of Style (16th Edition):

Bourgin, Dominique. “Réactions de fusion entre ions lourds par effet tunnel quantique : le cas des collisions entre calcium et nickel : Heavy-ion fusion reactions through quantum tunneling : collisions between calcium and nickel isotopes.” 2016. Doctoral Dissertation, Université de Strasbourg. Accessed August 18, 2019. http://www.theses.fr/2016STRAE023.

MLA Handbook (7th Edition):

Bourgin, Dominique. “Réactions de fusion entre ions lourds par effet tunnel quantique : le cas des collisions entre calcium et nickel : Heavy-ion fusion reactions through quantum tunneling : collisions between calcium and nickel isotopes.” 2016. Web. 18 Aug 2019.

Vancouver:

Bourgin D. Réactions de fusion entre ions lourds par effet tunnel quantique : le cas des collisions entre calcium et nickel : Heavy-ion fusion reactions through quantum tunneling : collisions between calcium and nickel isotopes. [Internet] [Doctoral dissertation]. Université de Strasbourg; 2016. [cited 2019 Aug 18]. Available from: http://www.theses.fr/2016STRAE023.

Council of Science Editors:

Bourgin D. Réactions de fusion entre ions lourds par effet tunnel quantique : le cas des collisions entre calcium et nickel : Heavy-ion fusion reactions through quantum tunneling : collisions between calcium and nickel isotopes. [Doctoral Dissertation]. Université de Strasbourg; 2016. Available from: http://www.theses.fr/2016STRAE023


University of the Western Cape

2. Mira, Joele Paulus. Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV .

Degree: 2008, University of the Western Cape

The objective of this project is to study the production of Li, Be and B isotopes emitted in the interaction of 12C with 12C at incident energies of 200 and 400 MeV.The energies of these produced fragments were measured with a detector telescope consisting of two silicon detectors at the incident energy of 200 MeV while a third silicon detector was added for the measurements at 400 MeV. Advisors/Committee Members: Förtsch, S.V (advisor), Lindsay, R (advisor).

Subjects/Keywords: Double differential cross-sections; Nucleon coalescence; Fragmentation; Break-up fusion; Pre-equilibrium; Evaporation; FLUKA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Mira, J. P. (2008). Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/2734

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Mira, Joele Paulus. “Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV .” 2008. Thesis, University of the Western Cape. Accessed August 18, 2019. http://hdl.handle.net/11394/2734.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Mira, Joele Paulus. “Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV .” 2008. Web. 18 Aug 2019.

Vancouver:

Mira JP. Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV . [Internet] [Thesis]. University of the Western Cape; 2008. [cited 2019 Aug 18]. Available from: http://hdl.handle.net/11394/2734.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mira JP. Production of Li, Be and B nuclei in the interaction of 12C with 12C at incident energies of 200 and 400 MeV . [Thesis]. University of the Western Cape; 2008. Available from: http://hdl.handle.net/11394/2734

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.