Abstract
The β decay of Zn57 and Zn58 was investigated in an experiment at the National Superconducting Cyclotron Laboratory of Michigan State University. For the first time β-delayed proton emission from Zn58 was observed with a branching ratio of 0.7(1)%. The proton-energy spectrum allowed for probing the Gamow-Teller strength distribution above the proton-separation energy in the daughter nucleus. Moreover, the absolute branching ration for delayed-proton emission from Zn57 was found to be compatible with 100%.
| Original language | English |
|---|---|
| Article number | 034305 |
| Journal | Physical Review C |
| Volume | 101 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2020 |
Funding
We wish to acknowledge the National Superconducting Cyclotron Laboratory staff for assisting with the experiments and providing excellent quality radioactive beams. Operation of the NSCL was supported by the National Science Foundation under Grant PHY-1102511. This work was supported by the National Science Center, Poland, under Contract No. UMO-2015/17/B/ST2/00581, by the US Department of Energy, Office of Science, Office of Nuclear Physics, under US DOE Grants No. DE-AC05-00OR22725 (ORNL) and No. DE-FG02-96ER40983 (UTK), by the fund source National Nuclear Security Administration Grant No. DEFC03-03NA00143, and under the Stewardship Science Academic Alliance program through DOE Cooperative Agreement No. DE-FG52-08NA28552 (UTK). A.A.C. acknowledges support by the Polish Ministry of Science and Higher Education through Grant No. 0079/DIA/2014/43 (”Grant Diamentowy”). H.S. acknowledges support by the US National Science Foundation under awards PHY-1430152 (JINA Center for the Evolution of the Elements) and PHY-1102511. P.S. acknowledges support from MCIU/AEI/FEDER _ UE (Spain) under Grant No. PGC2018-093636-B-I00.