Bohrium Properties

Description

Bohrium is a synthetic element that is not present in the environment at all. The first convincing synthesis was in 1981 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Gesellschaft für Schwerionenforschung (Institute for Heavy Ion Research, GSI) in Darmstadt using the Dubna reaction. In 1989, the GSI team successfully repeated the reaction during their efforts to measure an excitation function. During these experiments, ²⁶¹Bh was also identified in the 2n evaporation channel and it was confirmed that ²⁶²Bh exists as two states - a ground state and an isomeric state. The IUPAC/IUPAP Transfermium Working Group report in 1992 officially recognised the GSI team as discoverers of bohrium.