C Nair et al 2008 J. Phys. G: Nucl. Part. Phys. 35 014036 doi:10.1088/0954-3899/35/1/014036
Photodisintegration studies on p-nuclei: the case of Mo and sm isotopes
C Nair1, A R Junghans1, M Erhard1, D Bemmerer1, R Beyer1, P Crespo1, E Grosse1,2, M Fauth1, K Kosev1, G Rusev1, K D Schilling1, R Schwengner1 and A Wagner1
Show affiliationsIn explosive stellar environments like supernovae, the temperatures are high enough for the production of heavy neutron-deficient nuclei, the so-called 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(γ,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.
- PACS
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25.20.-x Photonuclear reactions
26.30.-k Nucleosynthesis in novae, supernovae, and other explosive environments
26.50.+x Nuclear physics aspects of novae, supernovae, and other explosive environments
27.60.+j 90(less-than-or-equal-to)A(less-than-or-equal-to)149
- Subjects
- Dates
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Issue 1 (January 2008)
Received 29 June 2007
Published 13 December 2007
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Photodisintegration studies on p-nuclei: the case of Mo and sm isotopes
C Nair et al 2008 J. Phys. G: Nucl. Part. Phys. 35 014036
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