Eur. Phys. J. A (2004) 22: 429-442
https://doi.org/10.1140/epja/i2004-10101-2

Decay studies of ^214-216Ac by α- γ- γ-coincidences

¹ Gesellschaft für Schwerionenforschung mbH, D-64220, Darmstadt, Germany
² Institut für Physik, Johannes Gutenberg-Universität Mainz, D-55099, Mainz, Germany
³ Institut für Kernphysik, Johann Wolfgang Goethe-Universität, D-60486, Frankfurt am Main, Germany

^* e-mail: P.Kuusiniemi@gsi.de

Received: 13 April 2004
Accepted: 3 November 2004
Published online: 23 November 2004

Abstract

The α-decay fine structure of ²¹⁴Ac, ²¹⁵Ac and ²¹⁶Ac has been studied using the α-γ-coincidence technique. The nuclei were produced by ²⁰⁹Bi( ¹²C, xn)^221-xAc-reactions. Evaporation residues were separated in-flight from the primary beam using the velocity filter SHIP at GSI, Darmstadt. The separated nuclei were implanted into a position-sensitive 16-strip PIPS Si detector and their subsequent decays were measured. In these studies new and improved decay data for ^214-216Ac were obtained.