Abstract
Beta-delayed-neutron () spectroscopy was performed using the Beta-decay Paul Trap and an array of radiation detectors. The branching ratios and energy spectra for and were obtained by measuring the time of flight of recoil ions emerging from the trapped ion cloud. These nuclei are located at the edge of an isotopic region identified as having branching ratios that impact the -process abundance pattern around the peak. For and branching ratios of , and were determined, respectively. The energy spectra obtained for and are compared with results from direct neutron measurements, and the energy spectrum for has been measured for the first time.
- Received 13 March 2019
- Revised 13 December 2019
- Accepted 27 January 2020
DOI:https://doi.org/10.1103/PhysRevC.101.025806
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