Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Nukleare Astrophysik
HK 33.3: Vortrag
Dienstag, 5. März 2013, 14:45–15:00, HSZ-403
Doppler Shift Attenuation Method: Results of the commissioning experiment 32S(3He,4He)31S* of the new setup at the Maier-Leibnitz-Laboratory — •Clemens Herlitzius and Shawn Bishop — Physik Department E12, Technische Universität München, Garching, Germany
A new setup has been built to measure the lifetimes of excited states in nuclei, using the Doppler shift attenuation method (DSAM).
In the astrophysical context, lifetime measurements are important to determine reaction rates indirectly, if a direct measurement is not feasible. Resonant (p,γ) reaction rates are a valuable input for reaction rate network calculations that study the production of intermediate mass elements in e.g. classical nova events.
The method and the setup will be presented. The analysis and the results of the commissioning experiment 32S(3He,4He)31S* will be shown, where the lifetime of the first excited state in 31S has been determined.
This research was supported by the DFG cluster of excellence ’Origin and Structure of the Universe’ (www.universe-cluster.de).