Temperature dependence of the giant dipole resonance width in Pb-208

被引：47
|
作者：
Ramakrishnan, E
Azhari, A
Beene, JR
Charity, RJ
Halbert, ML
Hua, PF
Kryger, RA
Mueller, PE
Pfaff, R
Sarantites, DG
Sobotka, LG
Thoennessen, M
VanBuren, G
Varner, RL
Yokoyama, S
机构：
[1] MICHIGAN STATE UNIV,NATL SUPERCOND CYCLOTRON LAB,E LANSING,MI 48824
[2] MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824
[3] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831
[4] WASHINGTON UNIV,DEPT CHEM,ST LOUIS,MO 63130
来源：
PHYSICS LETTERS B | 1996年 / 383卷 / 03期
基金：
美国国家科学基金会;
关键词：
giant dipole resonance; hot nuclei; statistical model; shell effects;
D O I：
10.1016/0370-2693(96)00746-0
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The evolution of the giant dipole resonance (GDR) in hot Pb-208 nuclei was studied by measuring high energy gamma-rays from the decay of the resonance built on excited states. Nuclei in the excitation energy range of 40-110 MeV were populated by inelastic scattering of 40 MeV/nucleon alpha-particles. The GDR width was observed to increase systematically from 4 MeV at the ground state to similar to 8 MeV at the highest excitation energy.
引用
收藏
页码：252 / 257
页数：6
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