Near-barrier quasielastic scattering as a sensitive tool to derive nuclear matter diffuseness

Journal Article · Mon Aug 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.84.024601· OSTI ID:21596665

Crema, E; Simoes, R F; Barioni, A ^[1]; Otomar, D R; Monteiro, D S; Lubian, J; Gomes, P R. S. ^[2]; Ono, L K ^[3]; Shorto, J M. B. ^[4]

---

1. Departamento de Fisica Nuclear, Instituto de Fisica da Universidade de Sao Paulo, Travessa R da Rua do Matao, 187, 05508-090, Sao Paulo, Sao Paulo (Brazil)
2. Instituto de Fisica, Universidade Federal Fluminense, Avenida Litoranea s/n, Gragoata, Niteroi, Rio de Janeiro, 24210-340 (Brazil)
3. Physics Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, Florida 32816 (United States)
4. Instituto de Pesquisas Energeticas e Nucleares, IPEN/CNEN, Avenida Lineu Prestes, 2242, 05508-000, Sao Paulo, Sao Paulo (Brazil)

Quasielastic excitation functions for the {sup 16,18}O + {sup 60}Ni systems were measured at energies near and below the Coulomb barrier, at the backward angle {theta}{sub LAB} = 161 deg. The corresponding quasielastic barrier distributions were derived. The data were compared with predictions from coupled channel calculations using a double-folding potential as a bare potential. For the {sup 16}O-induced scattering, good agreement was obtained for the barrier distribution by using the projectile default nuclear matter diffuseness obtained from the Sao Paulo potential systematic, that is, 0.56 fm. However, for the {sup 18}O-induced scattering, good agreement was obtained only when the projectile nuclear matter diffuseness was changed to 0.62 fm. Therefore, in this paper we show how near-barrier quasielastic scattering can be used as a sensitive tool to derive nuclear matter diffuseness.

• OSTI ID: 21596665
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 84; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB FIELD
COUPLED CHANNEL THEORY
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
ELECTRIC FIELDS
EXCITATION FUNCTIONS
FUNCTIONS
HEAVY ION REACTIONS
MATTER
NICKEL 60 TARGET
NUCLEAR MATTER
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
OXYGEN 18 REACTIONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
TARGETS