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

Abstract

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.

Authors:
; ; ; ; ; ; ; ; ;  [1];  [2]
  1. Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai-400 085 (India)
  2. Microtron Center, Department of Physics, Mangalore University, Mangalore-574 199 (India)
Publication Date:
OSTI Identifier:
20995301
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.75.054615; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

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., and Rajprakash, H. G.. Evidence for Coulomb effects on the fusion barrier distribution for deformed projectile nuclei. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.054615.
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., & Rajprakash, H. G.. Evidence for Coulomb effects on the fusion barrier distribution for deformed projectile nuclei. United States. doi:10.1103/PHYSREVC.75.054615.
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., and Rajprakash, H. G.. Tue . "Evidence for Coulomb effects on the fusion barrier distribution for deformed projectile nuclei". United States. doi:10.1103/PHYSREVC.75.054615.
@article{osti_20995301,
title = {Evidence for Coulomb effects on the fusion barrier distribution for deformed projectile nuclei},
author = {Nayak, B. K. and Choudhury, R. K. and Saxena, A. and Sahu, P. K. and Thomas, R. G. and Biswas, D. C. and John, B. V. and Mirgule, E. T. and Gupta, Y. K. and Bhike, M. and Rajprakash, H. G.},
abstractNote = {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.},
doi = {10.1103/PHYSREVC.75.054615},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}