The Sao Paulo Potential and the 3He Breakup Reaction at 130 MeV on 93Nb and 197Au

Author(s)

Chimanski, E. V. ^[1] ; Souza, L. A. ^[2] ; Carlson, B. V. ^[2]

Affiliation

^[1] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 - USA

^[2] Inst Tecnol Aeronaut, DCTA, Dept Fis, BR-12228900 Sao Jose Dos Campos, SP - Brazil

• Document type: Journal article
• Source: Brazilian Journal of Physics; v. 51, n. 2, SI, p. 323-327, APR 2021.
• Web of Science Citations: 0

Abstract

Nuclear reactions induced by weakly bound nuclei often result in the emission of light particles as products of the projectile breakup. The incident particle is expected to fragment before reaching the interior of the target nuclei, a characteristic that tends to favor forward angular emission. Although the first models developed for such reactions were proposed many decades ago by Udagawa and Tamura, Ichimura, Austern, Vincent, and Kasano, and Hussein and McVoy, to this date most of the attention has been dedicated to the breakup of the deuteron and other very weakly bound systems, while more strongly bound projectiles have not been fully explored. Here, we describe the production of protons and deuterons from the breakup of 3He. The breakup of 3He on two heavy targets, 93Nb and 197Au, is analyzed in this study. However, the incoming energy involved is much larger than that of the standard phenomenological optical potentials available in the literature for the 3He entrance channel. We have overcome this difficulty by using the Sao Paulo potential and adjusting the nuclear diffusivity. The deuteron inclusive spectra were calculated at several angles and compared well with the experimental data. Theoretical proton emission predictions are also given for future reference, since no inclusive measurements were performed for the targets under study. One of our goals is to verify the description of deuteron emission from fast projectiles, for which many partial waves contribute to the scattering process. (AU)

• FAPESP's process: 17/13693-5 - Comparison of preequilibrium nuclear reaction calculations in multistep direct reaction models
• Grantee: Emanuel Vicente Chimanski
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 19/07767-1 - Nuclear reactions with weakly-bound or cluster-structured radioactive and stable nuclei
• Grantee: Leandro Romero Gasques
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 16/07398-8 - Extension of the quantum formalism for direct multistep reactions
• Grantee: Emanuel Vicente Chimanski
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems
• Grantee: Brett Vern Carlson
• Support Opportunities: Research Projects - Thematic Grants