Photodisintegration studies on p-nuclei: The case of Mo and Sm isotopes

Details Photodisintegration studies on p-nuclei: The case of Mo and Sm isotopes Photodisintegration studies on p-nuclei: The case of Mo and Sm isotopes

2007-10-26

arxiv.org/abs/0710.5086v1

J.Phys.G35:014036,2008

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 3 figures

Scientific paper

10.1088/0954-3899/35/1/014036

In explosive stellar environments like supernovae, the temperatures are high enough for the production of heavy neutron-deficient nuclei, the socalled p-nuclei. Up to now, the knowledge of the reaction rates of p-nuclei is based on theoretical parameterizations using statistical model calculations. At the bremsstrahlung facility of the superconducting electron accelerator ELBE of FZ Dresden-Rossendorf, we aim to measure the photodisintegration rates of heavy nuclei experimentally. Photoactivation measurements on the astrophysically relevant p-nuclei 92Mo and 144Sm have been performed with bremsstrahlung end-point energies from 10.0 to 16.5 MeV. First experiments on the short-lived decays following the reaction 144Sm(gamma,n) are carried out using a pneumatic delivery system for rapid transport of activated samples. The activation yields are compared with calculations using cross sections from recent Hauser-Feshbach models.

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