Giant dipole emission in N/Z asymmetric heavy-ion reactions

Authors
Cinausero, M Gelli, N Viesti, G Lucarelli, F Bazzacco, D Bortignon, PF Brondi, A Fabris, D Farnea, E Fiore, EM Fiore, L Fioretto, E Fornal, B La Rana, G Lunardon, M Napoli, DR Nebbia, G Paticchio, V Prete, G Alvarez, CR Ur, CA Vardaci, E
Citation
M. Cinausero et al., Giant dipole emission in N/Z asymmetric heavy-ion reactions, NUOV CIM A, 111(6-7), 1998, pp. 613-619
Citations number
12
Categorie Soggetti
Physics
Journal title
NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS
ISSN journal
11241861 → ACNP
Volume
111
Issue
6-7
Year of publication
1998
Pages
613 - 619
Database
ISI
SICI code
1124-1861(199806/07)111:6-7<613:GDEINA>2.0.ZU;2-1
Abstract
We have measured the high-energy gamma-ray spectra from the fusion reaction s 130 MeV O-16 + Mo-98 and 240 MeV Ti-48 + Ni-64, populating the Sn-114 and Sn-112 compound nuclei at the excitation energy of 110 MeV. The comparison of the spectra shows a similar to 36% enhancement of the gamma-ray yield i n the Giant Dipole Resonance region (E gamma greater than or equal to 8 MeV ) when the O-16-induced reaction is considered. This enhancement is interpr eted as due to entrance channel effects related to the N/Z asymmetry betwee n the target and the projectile.