LEVEL DENSITIES IN RARE-EARTH NUCLEI

Authors
SIEM S TVETER TS BERGHOLT L GUTTORMSEN M MELBY E REKSTAD J
Citation
S. Siem et al., LEVEL DENSITIES IN RARE-EARTH NUCLEI, ACT PHY P B, 28(1-2), 1997, pp. 419-422
Citations number
7
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA B
ISSN journal
05874254 → ACNP
Volume
28
Issue
1-2
Year of publication
1997
Pages
419 - 422
Database
ISI
SICI code
0587-4254(1997)28:1-2<419:LDIRN>2.0.ZU;2-M
Abstract
An iterative procedure for simultaneous extraction of fine structure i n the level density and the gamma-ray strength function from a set of primary gamma-ray spectra has been developed. Data from the reactions Dy-163(He-3,alpha,gamma)Dy-162 and Yb-173(3He,alpha gamma)(172)yb reve als step like enhancements in the level density in the region below 5 MeV and peaks in the gamma-ray strength function at low gamma-energy ( E(gamma) approximate to 2 - 3.5 MeV). Tentative physical interpretatio ns are presented.