On the limit of nuclear stability — The region of double magic100Sn and bound-state β-decay of187Re75+ |
| |
Authors: | P Kienle |
| |
Institution: | 1. Physik-Department E12, Technische Universit?t München, James-Franck-Str., 85748, Garching, Germany
|
| |
Abstract: | Experiments which led to the discovery of the heaviest, self-conjugated double magic nucleus100Sn and the bound-state β-decay of completely ionized187Re are presented.100Sn was produced by fragmentation of 1.1 A GeV124Xe beams, separated and implanted in a 4π Si-stack detector. From its decay a half-lifeT
1/2=0.94(+0.54, −0.27) s and a β+ endpoint energy ofE
β=3.4(+0.7, −0.3) MeV were determined for the 0+−1+ Gamov-Teller transition. Completely stripped187Re75+ was produced and stored in a coolerring with an energy of 351 A MeV for several hours. The products of bound-state β-decay
of187Re75+ were detected by two independent methods, which allowed to determine a half-life ofT
1/2=33±6 y for this decay, which is of importance for the calibration of the Re/Os nucleosynthesis chronometer. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|