Ununtrium - Isotopes of Ununtrium, Ununtrium-278, Ununtrium-279, Ununtrium-280, Ununtrium-281, Ununtrium-282, Ununtrium-283, Ununtrium-284 (Paperback)

Chapters: Isotopes of Ununtrium, Ununtrium-278, Ununtrium-279, Ununtrium-280, Ununtrium-281, Ununtrium-282, Ununtrium-283, Ununtrium-284, Ununtrium-285, Ununtrium-286, Ununtrium-287. Source: Wikipedia. Pages: 37. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: Ununtrium - The first report of ununtrium was in August 2003 when it was identified as a decay product of ununpentium. These results were published on February 1, 2004, by a team composed of Russian scientists at Dubna (Joint Institute for Nuclear Research), and American scientists at the Lawrence Livermore National Laboratory. On July 23, 2004, a team of Japanese scientists at RIKEN detected a single atom of Uut using the cold fusion reaction between bismuth-209 and zinc-70. They published their results on September 28, 2004. Support for their claim appeared in 2004 when scientists at the Institute of Modern Physics (IMP) identified Bh as decaying with identical properties to their single event (see bohrium). The RIKEN team produced a further atom on April 2, 2005, although the decay data was different from the first chain, and may be due to the formation of a meta-stable isomer. The Dubna-Livermore collaboration has strengthened their claim for the discovery of ununtrium by conducting chemical experiments on the decay daughter Db. In experiments in Jun 2004 and Dec 2005, the Dubnium isotope was successfully identified by milking the Db fraction and measuring any SF activities. Both the half-life and decay mode were confirmed for the proposed Db which lends support to the assignment of Z=115 and Z=113 to the parent and daughter nuclei. Theoretical estimates of alpha-decay half-lives of alpha-decay chains from element 113 are in good agreement with the experimental data. The element with atomic number 113 is historically known as eka...More: http: //booksllc.net/?id=77474