Variation of variance of fission fragment mass distribution: a probe to study the dynamics of fusion-fission reactions
Journal Article
·
· AIP Conference Proceedings
- Variable Energy Cyclotron Centre, 1/AF, Bidhannagar, Kolkata 700064 (India)
Fragment mass distributions in fusion-fission reactions of light projectiles (12C, 16O and 19F) on thorium and bismuth targets in near and below Coulomb barrier energies are investigated. Precise and systematic measurements of mass distribution shows a sudden anomalous increase in variances of mass distributions ({sigma}{sub m}{sup 2}) near Coulomb barrier energies for all three projectiles with deformed thorium target, in contrast to a smooth variation of {sigma}{sub m}{sup 2} with energy for spherical bismuth target. Microscopic effects due to change in entrance channel shape compactness for projectiles hitting the polar region of prolate thorium target is postulated to reach a almost symmetric saddle without complete fusion for events of anomalous fragment widths.
- OSTI ID:
- 21056772
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 891; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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