Experimentally constrained (p,γ) y 89 and (n,γ) y 89 reaction rates relevant to p -process nucleosynthesis

The nuclear level density and the γ -ray strength function have been extracted for 89Y by using the Oslo method on 89Y(p,p γ ) 89Y coincidence data. The γ -ray strength function displays a low-energy enhancement consistent with previous observations in this mass region (93–98Mo). Shell-model calcula...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. C, Nuclear physics Nuclear physics, 2016-04
Main Authors: Larsen, Ann-Cecilie, Guttormsen, Magne Sveen, Schwengner, Ronald, Bleuel, Darren L, Goriely, Stephane, Harrisopulos, Sotirios, Bello Garrote, Frank Leonel, Byun, Y, Eriksen, Tomas Kvalheim, Giacoppo, Francesca, Görgen, Andreas, Hagen, Trine Wiborg, Klintefjord, Malin, Renstrøm, Therese, Rose, Sunniva Johanne, Sahin, Eda, Siem, Sunniva, Tornyi, Tamas Gabor, Tveten, Gry Merete, Voinov, Alexander, Wiedeking, Mathis
Format: Article
Language:Norwegian
Citations: Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The nuclear level density and the γ -ray strength function have been extracted for 89Y by using the Oslo method on 89Y(p,p γ ) 89Y coincidence data. The γ -ray strength function displays a low-energy enhancement consistent with previous observations in this mass region (93–98Mo). Shell-model calculations support the conclusion that the observed enhancement is due to strong, low-energy M1 transitions at high excitation energies. The data were further used as input for calculations of the 88Sr(p,γ ) 89Y and 88Y(n,γ ) 89Y cross sections with the TALYS reaction code. Comparison with cross-section data, where available, as well as with values from the BRUSLIB library, shows a satisfying agreement.
ISSN:0556-2813
1089-490X
DOI:10.1103/PhysRevC.93.045810