Speaker
Dr
Konstantin Stopani
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Description
A number of naturally present nuclei from 74Se to 196Hg lie far from the stellar s- and r-process' trajectories and their abundances can not be explained by nucleosynthesis in neutron capture reactions. These nuclei are known as p-nuclei and photonuclear reactions are believed to be one of the channels of their production [1]. Existing calculation models can not accurately describe p-nuclei abundances and the lack of experimental measurements on these nuclei is a major limiting factor [2].
Measurements of yields of photonuclear reactions in which the 102Pd, 112,114Sn, 106,108Cd, and 92,94Mo nuclei are produced have been performed at the Skobeltsyn Institute of Nuclear Physics of the Moscow State University in the bremsstrahlung energy range of up to 55 MeV using the activation technique. Experimental results are compared with Hauser-Feshbach statistical model calculations and a significant disagreement is found.
Additional studies with photon energy range from reaction threshold to 10 MeV are currently being performed.
[1] M. Arnould and S. Goriely, Physics Reports 384, 1 (2003).
[2] I. Dillmann et al., Phys. Rev. C 81, 015801 (2010).
Primary author
Dr
Konstantin Stopani
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Co-authors
Alexander Kuznetsov
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Boris Ishkhanov
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Nikolay Shvedunov
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Sergey Belyshev
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Vadim Khankin
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Vadim Orlin
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Vera Chetvertkova
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
Vladimir Varlamov
(Moscow State University, Skobeltsyn Institute of Nuclear Physics)
