Activation method combined with characteristic X-ray counting: a possibility to measure (α,γ) cross sections on heavy p-nuclei
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 813731
Author(s) Kiss, G. G.; Szuecs, T.; Gyuerky, Gy.; Fueloep, Zs.; Farkas, J.; Kertesz, Zs.; Somorjai, E.; Laubenstein, M.; Froehlich, C.; Rauscher, T.
Author(s) at UniBasel Rauscher, Thomas
Year 2011
Title Activation method combined with characteristic X-ray counting: a possibility to measure (α,γ) cross sections on heavy p-nuclei
Journal Nuclear physics. A, Nuclear and hadronic physics
Volume 867
Number 1
Pages / Article-Number 52-65
Keywords NUCLEAR REACTIONS Tm+169(alpha, gamma), (alpha, n), E=11.5-17.5 MeV, measured E gamma, I gamma, E(K X-ray), I (K X-ray), deduced sigma. Activation method with HPCe and LEPS detectors
Abstract For an improved modeling of the astrophysical nucleosynthesis of p-nuclei, low energy cross section data of alpha-induced reactions on heavy isotopes are needed. Technical difficulties hamper the experimental determination of these cross sections, therefore the relevant experimental data are almost completely missing. Here we present a new method for the cross section measurements, the activation technique based on the detection of characteristic X-ray radiation. The feasibility of the method is illustrated through the measurement of the Tm-169(alpha, gamma)Lu-173 and Tm-169(alpha, n)Lu-172 reaction cross sections. Despite the relatively long half-life of the reaction products (T-1/2 = 500 and 6.7 days, respectively) it was possible to measure the cross section of the Tm-169(alpha, gamma)Lu-173 reaction between E-c.m. = 13.16 and 17.08 MeV. The Tm-169(alpha, n)Lu-172 reaction cross section was derived from close above the threshold up to E-c.m.. = 17.08 MeV. Details of the new method and the experimental results are presented. (C) 2011 Elsevier B.V. All rights reserved.
Publisher North Holland
ISSN/ISBN 0375-9474
edoc-URL http://edoc.unibas.ch/dok/A5844708
Full Text on edoc No
Digital Object Identifier DOI 10.1016/j.nuclphysa.2011.07.003
ISI-Number WOS:000295544500004
Document type (ISI) Article
 
   

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