CrossRef enabled

PAC Archives

Archive →

Pure Appl. Chem., 2009, Vol. 81, No. 7, pp. 1331-1343

http://dx.doi.org/10.1351/PAC-REP-08-03-05

Published online 2009-05-19

INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY
INORGANIC CHEMISTRY DIVISION

INTERNATIONAL UNION OF PURE AND APPLIED PHYSICS
IUPAC/IUPAP JOINT WORKING PARTY ON DISCOVERY OF ELEMENTS

Discovery of the element with atomic number 112 (IUPAC Technical Report)

Robert C. Barber1, Heinz W. Gäggeler2, Paul J. Karol3*, Hiromichi Nakahara4, Emanuele Vardaci5 and Erich Vogt6

1 Department of Physics and Astronomy, University of Manitoba, Manitoba R3T 2N2, Canada
2 Paul Scherrer Institute, CH-5232 Villigen, Switzerland
3 Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA
4 Chemistry Department, Tokyo Metropolitan University, Tokyo 192-03, Japan
5 University of Naples “Federico II” and Istituto Nazionale di Fisica Nucleare, Napoli, Italy
6 TRIUMF, Vancouver, BC V6T 1W5, Canada

Abstract: The IUPAC/IUPAP Joint Working Party (JWP) on the priority of claims to the discovery of new elements has reviewed the relevant literature pertaining to several claims. In accordance with the criteria for the discovery of elements previously established by the 1992 IUPAC/IUPAP Transfermium Working Group (TWG), and reiterated by the 1999 and 2003 IUPAC/IUPAP JWPs, it was determined that the 1996 and 2002 claims by the Hofmann et al. research collaborations for the discovery of the element with atomic number 112 at Gesellschaft für Schwerionenforschung (GSI) share in the fulfillment of those criteria. A synopsis of Z = 112 experiments and related efforts is presented. A subsequent report will address identification of higher-Z elements including those of odd atomic number.