Photonuclear and radiative-capture reaction rates for nuclear astrophysics and transmutation: 92-100Mo, 88Sr, 90Zr, and 139La

被引：19

作者：

Beard, M. ^{[1
,2
]}

Frauendorf, S. ^{[1
,2
]}

Kaempfer, B. ^{[1
,3
]}

Schwengner, R. ^{[1
]}

Wiescher, M. ^{[2
]}

机构：

[1] Helmholtz Zentrum Dresden Rossendorf, Inst Strahlenphys, D-01314 Dresden, Germany

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[3] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany

来源：

PHYSICAL REVIEW C | 2012年 / 85卷 / 06期

基金：

美国国家科学基金会;

关键词：

PHOTONEUTRON CROSS-SECTIONS; GIANT-DIPOLE RESONANCE; LEVEL DENSITY FORMULA; FINITE NUCLEI; MODEL; STRENGTH; SCATTERING; STATES; WIDTH;

D O I：

10.1103/PhysRevC.85.065808

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：

Experimental photoabsorption cross sections for the nuclei Mo-92,Mo-94,Mo-96,Mo-98,Mo-100, Sr-88, Zr-90, and La-139 are used as an input for calculations of (gamma, n), (gamma, p), and (gamma, alpha), as well as (n, gamma), (p, gamma), and (alpha, gamma) cross sections and reaction rates at energies and temperatures relevant for nucleosynthesis network models and transmutation projects. The calculations are performed with the statistical-model code TALYS. The results are compared with those obtained by using different analytic standard parametrizations of gamma-ray strength functions implemented in TALYS and with an energy-damped double-Lorentzian model. The radiative capture reaction cross sections are enhanced by the pygmy resonances in Sr-88, Zr-90, and La-139.

引用

页数：19

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