ADOPTED LEVELS for 50Co
Authors: Jun Chen and Balraj Singh | Citation: Nucl. Data Sheets 157, 1 (2019) | Cutoff date: 15-Apr-2019
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-13449 keV 48 | S(n)= 15820 keV SY | S(p)= 170 keV SY | Q(α)= -7490 keV SY | ||
| Reference: 2017WA10 |
| References: | |||
| A | 50Ni ε decay (18.5 MS) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
| 0 | (6+) | 38.8 ms 2 % ε = 100 % εp = 70.5 7 % EC2P = ? | |
| 4835 47 | A | (0)+ | % p = 100 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (6+) | 38.8 ms 2 % ε = 100 % εp = 70.5 7 % EC2P = ? | T=(2) %εp=70.5 7 is most likely total delayed proton decay, including possible ε2p decay, deduced from time spectrum of events with energy >900 keV in the charged-particle spectrum. Possible small contributions from delayed-α and delayed-2p decays are ignored. Other: 54 13 (1996Fa09). Only two proton peaks detected. E(level): %εp=70.5 7 is most likely total delayed proton decay, including possible ε2p decay, deduced from time spectrum of events with energy >900 keV in the charged-particle spectrum. Possible small contributions from delayed-α and delayed-2p decays are ignored. Other: 54 13 (1996Fa09). Only two proton peaks detected. |
1987Po04: first identification of 50Co isotope. Fragmentation reaction used to produce 50Co isotope at GANIL facility. Primary beam: 58Ni at 55 MeV/nucleon; target: natural Ni and Al. Fragment separator: LISE. Identification: magnetic rigidity, tof, ΔE, E.
1996Fa09: experiment at FRS in GSI. Fragmentation reaction with 58Ni primary beam of 650 MeV/nucleon and beryllium target. Identification by tof, position information, magnetic field values and energy loss. Implantation into a Si telescope of 7 detectors. Coincidences between fragments and protons.
2007Do17: fragmentation reaction used to produce 50Ni isotope at SISSE/LISE3 facility in GANIL. Primary beam: 58Ni26+ at 74.5 MeV/nucleon; target=natural Ni. Fragment separator=α-LISE3. Identification by energy loss, residual energy and time-of-flight measurements using two micro-channel plate (MCP) detectors and Si detectors. Double-sided silicon-strip detectors (DSSSD) and a thick Si(Li) detector were used to detect implanted events, charged particles and β particles. γ rays were detected by Ge detectors. Coincidences measured between charged particles, β rays and γ rays.
2016Or03: 50Co produced in Ni(58Ni,X),E=74.5 MeV/nucleon reaction at GANIL.
Q-value: Q(β-) from mass excess of -17585 41 for 50Co and -4136 25 for 50Ni (2007Do17, IMME analysis). Other: -13510 640 (syst, 2017Wa10)
Q-value: Estimated ΔS(n)=640, ΔS(p)=400, ΔQ(α)=570 (2017Wa10)
Q-value: Q(εp)=12700 400, S(2n)=35270 640, S(2p)=2910 400 (syst, 2017Wa10). Q(ε2p)=10614 400 (syst, deduced by evaluator from mass excesses in 2017Wa10)