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Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):

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";
Vortrag: VI European Summer School on Experimental Nuclear Astrophysics, Acireale , Italien; 18.09.2011 - 27.09.2011; in: "PoS (ENAS 6)", Proceedings of Science, 148/015 (2011), ISSN: 1824-8039; S. 1 - 8.



Kurzfassung englisch:
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.

Schlagworte:
Nuclear data, Neutron cross sections, Charged particle reactions, Diamond detector, CVD, alpha-nucleus potential, n_TOF, CERN


Elektronische Version der Publikation:
http://publik.tuwien.ac.at/files/PubDat_206826.pdf


Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.