corner
corner
APS » Journals » Phys. Rev. C » Volume 60 » Issue 6
< Previous Article | Next Article >

Phys. Rev. C 60, 064624 (1999) [5 pages]

Effective widths and effective number of phonons of multiphonon giant resonances

Download: PDF (70 kB) Buy this article Export: BibTeX or EndNote (RIS)

L. F. Canto1, B. V. Carlson2, M. S. Hussein3, and A. F. R. de Toledo Piza3
1Instituto de Física, Universidade do Rio de Janeiro, CP 68528, 21945-970 Rio de Janeiro RJ, Brazil
2Departamento de Física, Instituto Tecnológico de Aeronáutica - CTA, 12228-900 São José dos Campos, SP, Brazil
3Instituto de Física, Universidade de São Paulo, C.P. 66318, 05315-970 São Paulo, Brazil

Received 6 May 1999; published 22 November 1999

We discuss the origin of the difference between the harmonic value of the width of the multiphonon giant resonances and the smaller observed value. Analytical expressions are derived for both the effective width and the average cross section. The contribution of the Brink-Axel mechanism in resolving the discrepancy is pointed out.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.60.064624
DOI:
10.1103/PhysRevC.60.064624
PACS:
24.30.Cz, 21.10.Re, 24.60.Ky, 25.70.De
 
< Previous Article | Next Article >