13-17 October 2014
Das Wormser
Europe/Berlin timezone

Spectroscopy of Element 115 Decay Chains at TASCA (NUSTAR)

15 Oct 2014, 14:40
Rheinsaal (Das Wormser)


Das Wormser


Ulrika Forsberg (Lund University)


During the past decade, a number of correlated alpha-decay chains, which all terminate by spontaneous fission, have been observed in several independent experiments using 48Ca-induced fusion-evaporation reactions on actinide targets. These are interpreted to originate from the production of neutron-rich isotopes with proton numbers Z=113-118. In November 2012, a three-week experiment was conducted at the GSI Helmholtzzentrum für Schwerionenforschung GmbH in Darmstadt, Germany, using high-resolution alpha, electron, X-ray and gamma-ray coincidence spectroscopy to observe alpha-X-ray events to identify uniquely atomic numbers of isotopes in Z=115 decay chains, and to provide the first insight into the structure of these nuclei. The reaction 48Ca+243Am was used, with fusion-evaporation products being focused into the TASISpec set-up, which was coupled to the gas-filled separator TASCA. A beam integral of roughly 7*10^18 48Ca particles led to the observation of 30 correlated alpha decay chains with characteristics similar to those previously published. Results from the experiment will be presented.

Primary author

Ulrika Forsberg (Lund University)

Presentation Materials