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Measurements of astrophysical neutron capture cross sections via the inverse reaction

Horvath, A. and Galonsky, A. and Carlin, N. and Deak, F. and Gomi, T. and Guimaraes, V. and Higurashi, Y. and Hiroshi, K. and Ieki, K. and Iwata, Y. and Kiss, A. and Kolata, J. and Rauscher, T. and Schelin, H. and von Schwarzenberg, J. and Seres, Z. and Takeuchi, S. and Typel, S. and Warner, R. and Weiner, J.. (2003) Measurements of astrophysical neutron capture cross sections via the inverse reaction. Nuclear physics. A, Nuclear and hadronic physics, Vol. 719 , S. 9C-12C.

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Official URL: http://edoc.unibas.ch/dok/A5839272

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Abstract

Neutron capture of short-lived isotopes can be important within several astrophysical environments. The laboratory investigation of these reactions can be difficult since these isotopes cannot form a target. We used radioactive beams and measured the inverse reaction instead. Particularly we used C-15 and Li-9 beams to measure the C-14(n,gamma)C-15, and Li-8(n, gamma)Li-9 reactions. We determined the reaction rates within the astrophysically interesting temperature range. Our data for the C-14 capture rises quickly up to 8mub and then it decreases by a factor of two at 1 MeV. We investigated neutron capture by 8 Li which is one possible leak of the bridging reaction Li-8(alpha, n)B-11 of the A=8 gap. We found that this leak is lower than the theoretical expectations.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:North Holland
ISSN:0375-9474
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:14 Sep 2012 07:18
Deposited On:14 Sep 2012 06:45

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