Gießen 2007 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 15: Kern- und Teilchen-Astrophysik
HK 15.7: Talk
Tuesday, March 13, 2007, 15:45–16:00, E
Photoactivation of 92Mo and investigation of the short-lived isomer in 91Mo with the new pneumatic delivery system at ELBE — •Martin Erhard1, Daniel Bemmerer1, Roland Beyer1, Paulo Crespo1, Michael Fauth1, Eckart Grosse1,2, Arnd Junghans1, Joakim Klug1, Krasimir Kosev1, Gencho Rusev1, Klaus-Dieter Schilling1, Ronald Schwengner1, and Andreas Wagner1 — 1Institut für Strahlenphysik, Forschungszentrum Dresden-Rossendorf, 01314 Dresden, Germany — 2Institut für Kern- und Teilchenphysik, Tech. Univ. Dresden, 01062 Dresden, Germany
The photodisintegration cross section of the nucleus 92Mo is important for p-process nucleosynthesis. The superconducting electron accelerator ELBE at Forschungszentrum Dresden-Rossendorf provides the possibility to investigate photodisintegration with bremsstrahlung using the photoactivation technique.
The reaction 92Mo(γ ,p)91Nb was studied using the decay of 91mNb with a 60.9 d half-life at ELBE [1]. Now the reaction 92Mo(γ ,n)91Mo has been probed using the new pneumatic delivery system to determine the activity of 91mMo (half-life: 65 s). Since the isomer 91mMo decays also into 91mNb it was necessary to measure this process to separate the (γ ,n) from (γ ,p) contributions.
[1] Erhard, M., Nair, C. et al., PoS (NIC-IX) 056 (2006)