Fission and gamma-ray decay of the238U shape isomer |
| |
| Authors: | M. Steinmayer K. E. G. Löbner L. Corradi U. Lenz U. Quade P. R. Pascholati K. Rudolph W. Schomburg |
| |
| Affiliation: | 1. Sektion Physik, Universit?t München, Am Coulombwall 1, W-8046, Garching, Federal Republic of Germany
2. Max-Planck Institut für extraterrestrische Physik, W-8046, Garching, Federal Republic of Germany
|
| |
| Abstract: | The decay of the238U superdeformed shape isomer has been reinvestigated by detecting for the first time simultaneously the fission and the gamma-back decay. An electrostatic deflection system has been used to transport the238mU recoils, produced in a238U(d, pn) reaction with a pulsed beam of 18 MeV deuterons, in front of a detector set-up consisting of three ion-implanted solidstate detectors and a Ge(Li) gamma-detector. The gamma-back decay has been measured in coincidence with conversion electrons of the 2+  0+ transition deexciting the first rotational state in238U. Two gamma-transitions of 2.513 MeV and 1.878 MeV have been observed with half-lives consistent with the result obtained for the decay by delayed fissionT1/2=(298±18) ns.Dedicated to Prof. Dr. P. Kienle on the occasion of his 60th birthday |
| |
| Keywords: | KeywordHeading" >PACS 23.20.Ck 23.20.Lv 25.85.Ge 27.90.+b |
| 本文献已被 SpringerLink 等数据库收录！ |
|
