Eur. Phys. J. A (2000) 8: 521-535
https://doi.org/10.1007/s100500070075

Decay properties of neutron-deficient nuclei in the region Z = 86–92

¹ Gesellschaft für Schwerionenforschung mbH, D-64220, Darmstadt, Germany
² Institut für Physik, Johannes Gutenberg-Universität Mainz, D-55099, Mainz, Germany
³ E.O. Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
⁴ Physics Department, University of Jyväskylä, FIN-40351, Jyväskylä, Finland
⁵ Department od Nuclear Physics, Comenius University, SK-84215, Bratislava, Slovakia
⁶ Frank Laboratory of Neutron Physics, JINR, 141 980, Dubna, Russia
⁷ Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK
⁹ Instituut voor Kern-en Stralingsfysika, Katholieke Universiteit Leuven, B-3001, Leuven, Belgium
⁸ Flerov Laboratory of Nuclear Reactions, JINR, 141 980, Dubna, Russia

^* e-mail: f.p.hessberger@gsi.de

Received: 5 April 2000
Published online: 15 August 2000

Abstract

Neutron deficient isotopes of elements Z = 86–92 have been produced by heavy-ion fusion reactions ¹²C + ²⁰⁸Pb, ²⁰⁹Bi, ²²Ne + ²⁰⁸Pb, ⁵¹V + ¹⁷⁰Er, and ⁵⁰Ti + ¹⁷⁰Er. The evaporation residues were investigated by means of α- and α-γ-spectroscopy after in-flight separation from the projectile beam by the velocity filter SHIP and implantation into a 16-strip position-sensitive Si-detector. New or improved decay data for ^225,226U, ^216,217m,218Pa, ^215,216,217Th, ^{214,215,216,216m}Ac, ²¹⁴Ra and ²¹³Rn have been obtained.