Nuclear Seminar

Ultra-fast time-delayed measurements of level lifetimes at closed shell nuclei - the possibility of measurements at NSL

Dr. Henryk Mach
University of Notre Dame

Monday, September 18, 2006   4:00 p.m.   NSH 124
(Refreshments served prior to seminar in NSH 124)

 

Knowledge of absolute transition rates and dynamic moments provides an important insight into the structure of nuclei and allow for a critical verification of theoretical models. Although the main techniques to study transition rates and level lifetimes, especially for the proton-rich and stable nuclei, are the Coulomb excitation and Doppler shift measurements, yet ultra fast timing techniques [1] represent unique experimental tools that allow to study dynamical moments in very exotic, mainly neutron-rich nuclei in a large number of cases where the other techniques cannot be applied or, importantly, provide an independent verification of results obtained by other techniques in cases when the results are discrepant. This presentation will provide a summary of the recent time-delayed measurements on the exotic nuclei just below ¹⁰⁰Sn and above ¹³²Sn. The possibility of application of this technique at NSL will be discussed.