학술논문
COMPETING DECAY MODES OF A HIGH-SPIN ISOMER IN THE PROTON-UNBOUND NUCLEUS 158 Ta.
Document Type
Article
Author
Source
Subject
*ISOMERS
*EXCITATION energy (In situ microanalysis)
*HALF-life (Nuclear physics)
*NUCLEAR spin
TANTALUM isotopes
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Language
ISSN
0587-4254
Abstract
An isomeric state at high spin and excitation energy was recently observed in the proton-unbound nucleus 158Ta. This state was observed to decay by both α and γ decay modes. The large spin change required to decay via γ-ray emission incurs a lifetime long enough for α decay to compete. The α decay has an energy of 8644(11) keV, which is among the highest observed in the region, a partial half-life of 440(70) µs and changes the spin by 11ħ. In this paper, additional evidence supporting the assignment of this α decay to the high-spin isomer in 158Ta will be presented. [ABSTRACT FROM AUTHOR]