The new element 112
The new element 112 was produced and identified unambiguously in an experiment at SHIP, GSI Darmstadt. Two decay chains of the isotope277112 were observed in irradiations of208Pb targets with70Zn projectiles of 344 MeV kinetic energy. The isotope decays by emission of α particles with a half-life of (240−90+430)µs. Two different α energies of (11,649±20) keV and (11,454±20) keV were measured for the two observed decays. The cross-section measured in three weeks of irradiations is (1.0−0.4+1.8) pb.
PACS21.10.Dr 23.60.+e 25.70.-Z 27.90.+b
- 2.S. Hofmann, Proc. Int. Conf. On Low Energy Nuclear Dynamics, St. Petersburg, 1995, p. 305Google Scholar
- 3.R. Smolanczuk and A. Sobiczewski, Proc. Int. Conf. On Low Energy Nuclear Dynamics, St. Petersburg, 1995, p. 313Google Scholar
- 10.M. Schädel et al.: GSI Annual Report 1995Google Scholar
- 11.Yu.A. Lazarev et al., Dubna Report No. E7-95-552, subm. for publ. to Phys. Rev. CGoogle Scholar