Evidence for Coulomb effects on the fusion barrier distribution for deformed projectile nuclei

Journal Article · Tue May 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.054615· OSTI ID:20995301

Nayak, B K; Choudhury, R K; Saxena, A; Sahu, P K; Thomas, R G; Biswas, D C; John, B V; Mirgule, E T; Gupta, Y K; Bhike, M ^[1]; Rajprakash, H G ^[2]

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1. Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai-400 085 (India)
2. Microtron Center, Department of Physics, Mangalore University, Mangalore-574 199 (India)

Coulomb effects during the interaction of light deformed projectile nuclei with a heavy collision partner have been predicted to modify the fusion barrier distribution leading to a hindrance in the sub-barrier fusion cross section. In order to verify this experimentally, we have determined the fusion barrier distributions from the measurement of quasielastic excitation functions for {sup 16}O(spherical)+{sup 115}In, {sup 28}Si(oblate)+ {sup 115}In, and {sup 30}Si(prolate)+ {sup 115}In systems. For {sup 16}O+{sup 115}In system, the fusion barrier distribution is single peaked, whereas for {sup 28}Si+{sup 115}In and {sup 30}Si+{sup 115}In systems, one observes broadening and well defined structures in fusion barrier distribution, which could be explained by coupled-channel calculations performed using the CCFULL code after including deformation and Coulomb effects on the projectile in the field of target nucleus.

• OSTI ID: 20995301
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COUPLED CHANNEL THEORY
DEFORMED NUCLEI
DISTRIBUTION
EXCITATION FUNCTIONS
HEAVY ION REACTIONS
INDIUM 115
OXYGEN 16
SILICON 28
SILICON 30
VISIBLE RADIATION