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Eikonal phase shift analyses of carbon–carbon scattering

Publication: Canadian Journal of Physics
June 1983

Abstract

A high-energy double-folding optical potential approximation to the exact nucleus–nucleus multiple-scattering series is used to determine eikonal phase shifts for carbon –carbon scattering at 204.2, 242.7, and 288.6 MeV. The double-folding potentials are obtained by folding the energy-dependent free nucleon–nucleon interaction with densities for the projectile and target obtained by unfolding the finite nucleon charge density from harmonic-well carbon charge distributions. The charge parameters for the latter are taken from the results of electron scattering experiments. Predictions for total, reaction, and elastic differential cross sections, using standard partial wave analysis for the scattering of identical particles, are made and compared with recent experimental results. Excellent agreement is obtained although there are no arbitrarily adjusted parameters in the theory.

Résumé

On utilise l'approximation du potentiel optique avec interaction microscopique à haute énergie à la série de diffusion multiple noyau–noyau exacte pour déterminer les déphasages eikonaux lors de la diffusion carbone–carbone à 204,2 242,7 et 288,8 MeV. On obtient les potentiels avec interaction microscopique en croisant l'interaction nucléon–nucléon libres dépendante de l'énergie avec les densités du projectile et de la cible; ces densités sont évaluées a partir de la densité de charge du nucléon fini tirée des distributions de charge du carbone avec un puits harmoniquc. Ces derniers paramètres de charge sont tirés des résultats expérimentaux de diffusion d'électrons. On effectue, à partir de la décomposition standard en ondes partielles pour la diffusion de particules idéatiques, les prédictions pour les sections efficaces totale, de réaction et différentielle élastique; ces prédictions sont comparées avec des résultats expérimentaux récents. Nous obtenons un accord excellent même si la théorie ne contient pas de paramètres à ajuster arbitrairement. [Traduit par le journal]

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cover image Canadian Journal of Physics
Canadian Journal of Physics
Volume 61Number 6June 1983
Pages: 867 - 871

History

Version of record online: 12 February 2011

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Cited by

1. Optical potential for light nuclei and momentum-space eikonal phase function
2. Elastic differential cross sections for space radiation applications
3. Finite sum expressions for elastic and reaction cross sections
4. Transport Methods and Interactions for Space Radiations
5. Theoretical antideuteron-nucleus absorptive cross sections
6. Inelastic 12 C( 12 C, 12 C) 12 C scattering via the Glauber optical potential at E/A=30 MeV and 85 MeV

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