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

被引：30

作者：

Larsen, A. C. ^{[1
]}

Guttormsen, M. ^{[1
]}

Schwengner, R. ^{[2
]}

Bleuel, D. L. ^{[3
]}

Goriely, S. ^{[4
]}

Harissopulos, S. ^{[5
]}

Garrote, F. L. Bello ^{[1
]}

Byun, Y. ^{[6
]}

Eriksen, T. K. ^{[1
]}

Giacoppo, F. ^{[1
]}

Gorgen, A. ^{[1
]}

Hagen, T. W. ^{[1
]}

Klintefjord, M. ^{[1
]}

Renstrom, T. ^{[1
]}

Rose, S. J. ^{[1
]}

Sahin, E. ^{[1
]}

Siem, S. ^{[1
]}

Tornyi, T. G. ^{[1
]}

Tveten, G. M. ^{[1
]}

Voinov, A. V. ^{[6
]}

Wiedeking, M. ^{[7
]}

机构：

[1] Univ Oslo, Dept Phys, POB 1048, N-0316 Oslo, Norway

[2] Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany

[3] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

[4] Univ Libre Bruxelles, Inst Astron & Astrophys, Brussels, Belgium

[5] NCSR Demokritos, Inst Nucl & Particle Phys, Athens, Greece

[6] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

[7] IThemba LABS, POB 722, ZA-7129 Somerset West, South Africa

来源：

PHYSICAL REVIEW C | 2016年 / 93卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

PHOTONEUTRON CROSS-SECTIONS; MODEL-CALCULATIONS; STRENGTH FUNCTION; LEVEL DENSITY; ASTROPHYSICS; ELEMENTS; SPECTRA; LIBRARY; NUCLEI; SYSTEM;

D O I：

10.1103/PhysRevC.93.045810

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The nuclear level density and the gamma-ray strength function have been extracted for Y-89 by using the Oslo method on Y-89(p,p gamma')Y-89 coincidence data. The gamma-ray strength function displays a low-energy enhancement consistent with previous observations in this mass region (Mo93-98). 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 Sr-88(p,gamma)Y-89 and Y-88(n,gamma)Y-89 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.

引用

页数：13

共 50 条

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AWAYA, Y
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