Neutron-induced reactions contributing to the background in γ-ray astrophysics missions -: art. no. 064615

被引:11
|
作者
Coszach, R [1 ]
Duhamel, P
Galster, W
Jean, P
Leleux, P
Meulders, JP
Vanhorenbeeck, J
Vedrenne, G
von Ballmoos, P
机构
[1] Catholic Univ Louvain, Inst Phys Nucl, B-1348 Louvain, Belgium
[2] Free Univ Brussels, Inst Astron & Astrophys, B-1050 Brussels, Belgium
[3] Univ Toulouse 3, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse, France
来源
PHYSICAL REVIEW C | 2000年 / 61卷 / 06期
关键词
D O I
10.1103/PhysRevC.61.064615
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
Nuclear reactions induced by neutrons lead to the delayed emission of gamma rays contributing to the instrumental background in gamma-ray astrophysics missions in space. The cross sections for the reactions Al-27(n,2p)Na-26, Al-27(n,alpha)Na-24, and Fe-56(n,p)Mn-56 were measured up to a neutron energy of 50 or 65 MeV. A simple model was developed that allows one to extrapolate cross sections to higher energies. The magnitude of the instrumental background lines induced in the detectors of ESA's future INTEGRAL mission is deduced from our measurements.
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页数:6
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