Alpha-induced reaction cross section measurements on Eu-151 for the astrophysical gamma-process
Kiss, G. G.
Guray, R. T.
In order to extend the experimental database relevant for the astrophysical gamma-process towards the unexplored heavier mass region, the cross sections of the Eu-151(alpha, gamma)Tb-155 and Eu-151 (alpha, n)Tb-154 reactions have been measured at low energies between 12 and 17 MeV using the activation technique. The results are compared with the predictions of statistical model calculations and it is found that the calculations overestimate the cross sections by about a factor of 2. A sensitivity analysis shows that this discrepancy is caused by the inadequate description of the alpha+nucleus channel. A factor of 2 reduction of the reaction rate of Eu-151(alpha, gamma)Tb-155 in gamma-process network calculations with respect to theoretical rates using the optical potential by McFadden and Satchler (1966 Nucl. Phys. 84 177) is recommended.
Published inJournal of Physics G: Nuclear and Particle Physics
MetadataShow full item record
Showing items related by title, author, creator and subject.
Ahmed, Rizwan (University of Hertfordshire, 2005)In recent years, simulation modelling of software processes have has promoted as a tool to understand, study, control, and manage software development processes. Claims have been made that simulation models are useful ...
Cholachatpinyo, A.; Fletcher, Ben; Padgett, I.; Crocker, M. (2002)The purpose of this paper is to present a new framework to conceptualise the fashion process called “the fashion transformation process model”. This model integrates much previous research about the fashion process, fills ...
Mass measurements in the vicinity of the r p-process and the nu p-process paths with the Penning trap facilities JYFLTRAP and SHIPTRAP Weber, C.; Elomaa, V. -V.; Ferrer, R.; Froehlich, C.; Ackermann, D.; Aystoe, J.; Audi, G.; Batist, L.; Blaum, K.; Block, M.; Chaudhuri, A.; Dworschak, M.; Eliseev, S.; Eronen, T.; Hager, U.; Hakala, J.; Herfurth, F.; Hessberger, F. P.; Hofmann, S.; Jokinen, A.; Kankainen, A.; Kluge, H. -J.; Langanke, K.; Martin, A.; Martinez-Pinedo, G.; Mazzocco, M.; Moore, I. D.; Neumayr, J. B.; Novikov, Yu. N.; Penttilae, H.; Plass, W. R.; Popov, A. V.; Rahaman, S.; Rauscher, T.; Rauth, C.; Rissanen, J.; Rodriguez, D.; Saastamoinen, A.; Scheidenberger, C.; Schweikhard, L.; Seliverstov, D. M.; Sonoda, T.; Thielemann, F. -K.; Thirolf, P. G.; Vorobjev, G. K. (2008-11)The masses of very neutron-deficient nuclides close to the astrophysical r p- and nu p-process paths have been determined with the Penning trap facilities JYFLTRAP at JYFL/Jyvaskyla and SHIPTRAP at GSI/Darmstadt. Isotopes ...