Phys. Rev. Lett. 83, 1104–1107 (1999)Observation of Superheavy Nuclei Produced in the Reaction of 86Kr with 208PbSee Also: Editorial Note
See accompanying Physics Focus Following a prediction by Smolańczuk [Phys. Rev. C 59, 2634 (1999)], we searched for superheavy element formation in the bombardment of 208Pb with 449-MeV 86Kr ions. We have observed three decay chains, each consisting of an implanted heavy atom and six subsequent α decays, correlated in time and position. In these decay chains, a rapid (ms) sequence of high energy α particles ( Eα≥10MeV) indicates the decay of a new high- Z element. The observed chains are consistent with the formation of 293118 and its decay by sequential α-particle emission to 289116, 285114, 281112, 277110, 273Hs ( Z = 108) and 269Sg ( Z = 106). The production cross section is 2.2-0.8+2.6pb. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.1104
DOI:
10.1103/PhysRevLett.83.1104
PACS:
25.70.Jj, 27.90.+b
See AlsoEditorial Note: V. Ninov, K. E. Gregorich, W. Loveland, A. Ghiorso, D. C. Hoffman, D. M. Lee, H. Nitsche, W. J. Swiatecki, U. W. Kirbach, C. A. Laue, J. L. Adams, J. B. Patin, D. A. Shaughnessy, D. A. Strellis, and P. A. Wilk, Editorial Note: Observation of Superheavy Nuclei Produced in the Reaction of 86Kr with 208Pb [Phys. Rev. Lett. 83, 1104 (1999)], Phys. Rev. Lett. 89, 039901 (2002). |
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