Radiative fusion from very symmetric reactions:: the giant dipole resonance in the 179Au nucleus

被引：27

作者：

Camera, F ^{[1
]}

Bracco, A

Nanal, V

Carpenter, MP

Della Vedova, F

Leoni, S

Million, B

Mantovani, S

Pignanelli, M

Wieland, O

Back, BB

Heinz, AM

Janssens, RVF

Jenkins, D

Khoo, TL

Kondev, FG

Lauritsen, T

Lister, CJ

McClintock, B

Mitsuoka, S

Moore, EF

Seweryniak, D

Siemssen, RH

Van Swol, RJ

Hofman, D

Thoennessen, M

Eisenman, K

Heckman, P

Seitz, J

Varner, R

Halbert, M

Dioszegi, I

Lopez-Martens, A

机构：

[1] Univ Milan, Milan, Italy

[2] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[3] Argonne Natl Lab, Argonne, IL 60459 USA

[4] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[5] Univ Illinois, Chicago, IL 60607 USA

[6] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[7] Michigan State Univ, Dept Phys Astron, E Lansing, MI 48824 USA

[8] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[9] Joint Inst Heavy Ion Res, Oak Ridge, TN 37831 USA

[10] SUNY Stony Brook, Stony Brook, NY 11794 USA

[11] CNRS, IN2P3, CSNSM, F-91405 Orsay, France

来源：

PHYSICS LETTERS B | 2003年 / 560卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(03)00403-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The spectra of high-energy gamma rays emitted by the Giant Dipole Resonance (GDR) built on moderately excited states associated with the evaporation of 0, 1 and 2 nucleons were measured in the Zr-90 + Y-89 symmetric fusion reaction. The radiative fusion data suggest statistical emission from the compound nucleus. In addition, the analysis of the high-energy gamma-ray spectra associated with the different evaporation channels at the present temperature of 0.7 MeV and spin range 15-20 h show a fairly narrow width of 5.0 +/- 0.35 MeV. This value is smaller than what would be expected in a nucleus where shell effects do not play a role. (C) 2003 Published by Elsevier Science B.V.

引用

页码：155 / 160

页数：6

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