Nuclear Physics Seminar: Dr. Claus Müller-Gatermann, Argonne National Laboratory


Location: 184 Nieuwland Science Hall

Lifetime measurements of excited nuclear states using plunger devices

Dr. Claus Müller-Gatermann
Argonne National Laboratory

Plunger devices are used worldwide to measure the lifetime of excited nuclear states on  the order of hundreds of femto- to picoseconds. Deduced transition probabilities are used to test and refine nuclear models. These are more sensitive to the nuclear wave function than the excitation energy of the corresponding states. I will give an overview on the method using the Doppler shift of gamma decays to determine lifetimes. If the time allows, the newly established charge-plunger technique will be covered in the talk as well. Specific constrains using plunger devices, different setups and the analysis will be discussed. Within the talk examples will be given from experiments in the neutron-deficient lead regime, which is known for shape-coexistence phenomena.

Hosted by Prof. Aprahamian