Fusion versus breakup: Observation of large fusion suppression for Be-9+Pb-208

Citation
M. Dasgupta et al., Fusion versus breakup: Observation of large fusion suppression for Be-9+Pb-208, PHYS REV L, 82(7), 1999, pp. 1395-1398
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
82
Issue
7
Year of publication
1999
Pages
1395 - 1398
Database
ISI
SICI code
0031-9007(19990215)82:7<1395:FVBOOL>2.0.ZU;2-L
Abstract
Complete fusion excitation functions for Be-9 + Pb-208 have been measured t o high precision at near barrier energies. The experimental fusion barrier distribution extracted from these data allows reliable prediction of the ex pected complete fusion cross sections. However, the measured cross sections are only 68% of those predicted. The large cross sections observed for inc omplete fusion products support the interpretation that this suppression of fusion is caused by Be-9 breaking up into charged fragments before reachin g the fusion barrier. implications for the fusion of radioactive nuclei are discussed. [S0031-9007(99)08474-4].