Talks and Poster Presentations (with Proceedings-Entry):
C. Weiß, G. Badurek, E. Berthoumieux, M. Calviani, E. Chiaveri, D. Dobos, E. Griesmayer, C. Guerrero, E. Jericha, F. Käppeler, H. Leeb, T. Rauscher, V. Vlachoudis:
"A CVD diamond detector for (n,α) cross-section measurements";
Talk: VI European Summer School on Experimental Nuclear Astrophysics,
Acireale , Italien;
09-18-2011
- 09-27-2011; in: "PoS (ENAS 6)",
Proceedings of Science,
148/015
(2011),
ISSN: 1824-8039;
1
- 8.
English abstract:
In astrophysics, the determination of the optical α-nucleus potential for low α-particle energies, crucial in understanding the origin of the stable isotopes, has turned out to be a challenge. Theory still cannot predict the optical potentials required for the calculation of the astrophysical reaction rates in the Hauser-Feshbach statistical model and there is scant experimental information on reactions with α particles at the relevant astrophysical energies. Measurements of (n, α) cross-sections offer a good opportunity to study the α channel.
At the n_TOF experiment at CERN, a prototype detector, based on the chemical vapor deposition (CVD) diamond technology, has been recently developed for (n, α) measurements. A reference measurement of the 10B(n, α)7Li reaction was performed in 2011 at n_TOF as a feasibility study for this detector type.
The results of this measurement and an outline for future experiments are presented here.
Keywords:
Nuclear data, Neutron cross sections, Charged particle reactions, Diamond detector, CVD, alpha-nucleus potential, n_TOF, CERN
Electronic version of the publication:
http://publik.tuwien.ac.at/files/PubDat_206826.pdf
Created from the Publication Database of the Vienna University of Technology.