The β decay of neutron-rich Cu74 has been studied at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. By using a high-resolution mass separator a purified Cu74 beam was obtained, thus allowing decay through its isobar chain to stable Ge74 without any decay chain member dominating. A total of 170γ rays were associated with Cu74β decay with 111 placed in the Zn74 level scheme. Updated β feeding intensities and estimated log(ft) values are presented, and new Jπ assignments are proposed using shell model calculations. The progression of simulated total absorption γ-ray spectroscopy (TAGS) based on proposed levels and β-feeding values from previous measurements to this evaluation are presented and demonstrate the need for a TAGS measurements for this and similar decays.
Publication Source (Journal or Book title)
Physical Review C
Tracy, J., Winger, J., Rasco, B., Silwal, U., Siwakoti, D., Rykaczewski, K., Grzywacz, R., Batchelder, J., Bingham, C., Brewer, N., Cartegni, L., Ciemny, A., Fijałkowska, A., Gross, C., Jost, C., Karny, M., Kolos, K., Korgul, A., Królas, W., Liu, Y., Madurga, M., Mazzocchi, C., Mendez, A., Miernik, K., Miller, D., Padgett, S., Paulauskas, S., Stracener, D., Wolińska-Cichocka, M., Rajabali, M., & Zganjar, E. (2018). Updated β -decay measurement of neutron-rich Cu 74. Physical Review C, 98 (3) https://doi.org/10.1103/PhysRevC.98.034309