Bonn 2010 – wissenschaftliches Programm
HK 15.3: Vortrag
Dienstag, 16. März 2010, 14:30–14:45, HG II
First direct Penning trap mass measurements on nobelium and lawrencium — •Christian Droese — Universität Greifswald
The mass measurements of the three nobelium isotopes 252−254No and the lawrencium isotope 255Lr measured with the Penning trap mass spectrometer SHIPTRAP/GSI have been evaluated. These were the first direct mass measurements of transfermium elements ever performed. The results mark the first step in the exploration of masses of even heavier nuclides which is planned at SHIPTRAP. The main objective is to measure the endpoints of alpha-decay chains starting from superheavy nuclei in the region of the predicted island of stability. The SHIPTRAP results were compared with previous measurements based on alpha-decay chains and new literature values were obtained.