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Bonn 2010 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 15: Struktur und Dynamik von Kernen III

HK 15.3: Talk

Tuesday, March 16, 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.

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