Temperature dependence of the width of the giant dipole resonance in Sn-120 and Pb-208

被引：188
作者：
Ormand, WE
Bortignon, PF
Broglia, RA
机构：
[1] OAK RIDGE NATL LAB,DIV PHYS,OAK RIDGE,TN 37831
[2] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY
[3] IST NAZL FIS NUCL,I-20133 MILAN,ITALY
[4] UNIV COPENHAGEN,NIELS BOHR INST,DK-2100 COPENHAGEN O,DENMARK
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.77.607
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The giant-dipole resonance (GDR) in Sn-120 and Pb-208 is studied as a function of excitation energy, angular momentum, and intrinsic width. Theoretical evaluations of the full width at half maximum (FWHM) for the GDR strength function, are compared with recent experimental data and are found to be in overall agreement. Differences observed between Sn-120 and Pb-208,, attributed to strong shell corrections in Pb-208 favoring spherical shapes at low temperatures. At high temperature, the FWHM in Sn-120 exhibits effects due to the evaporation width of the compound nucleus.
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页码：607 / 610
页数：4
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