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Neutron induced reactions on (41)Ca are interesting from a nuclear physics point of view as well as for astrophysics applications. Since no experimental cross-section determination were available for the (41)Ca(n(th),p)(41)K and (41)Ca(n(th),alpha)(38)Ar reactions, a series of dedicated measurements were performed at the high flux reactor of the Institut Laue-Langevin in Grenoble. This undertaking was however seriously hampered by the rareness of enriched (41)Ca and problems associated with the production and assaying of the samples. For the (41)Ca(n(th),p)(41)K reaction cross-section a value of (7 +/- 2) mb was obtained. In the case of the (41)Ca(n(th),alpha)(38)Ar reaction, the transition to the ground-state in (38)Ar with a cross-section sigma(n(th),alpha(0)) = (42 +/- 6) mb, the most prominent decay going to the first excited state in (38)Ar with a cross-section sigma(n(th),alpha(1)) = (130 +/- 25) mb. Also (41)Ca(N(th),gamma alpha)(38)Ar transitions have been observed with a cross-section of (10 +/- 2) mb. The primary gamma transitions are likely to have a M1-multipolarity.

Additional information

Authors: WAGEMANS C, University of Gent, Department of Subatomic and Radiation Physics (BE);BIEBER R, JRC Geel (BE);GELTENBORT P, Institute Laue-Langevin, Grenoble (FR)
Bibliographic Reference: Article: Physics Review C (1997)
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