Abstract
The nuclide was produced in the reaction at beam energies of 125.9, 130.6, and 135.3 MeV. Decay properties of were investigated with a rotating wheel apparatus for and spontaneous fission (SF) spectrometry under low background conditions attained by a gas-jet transport system coupled to the RIKEN gas-filled recoil ion separator. Based on genetically correlated and -SF decay chains, a total of 23 chains were assigned to and its daughter nuclide and granddaughter . The half-life of was measured to be which is an order of magnitude longer than the literature data. The -particle energies of disperse widely in the range of . The maximum production cross section for the reaction was determined to be pb at 130.6 MeV, whereas the upper limit for the () reaction was pb at 121.2 MeV. These cross sections are discussed by comparing with the literature data as well as the theoretical calculations.
1 More- Received 11 June 2020
- Accepted 30 July 2020
DOI:https://doi.org/10.1103/PhysRevC.102.024625
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