ADOPTED LEVELS, GAMMAS for 76Ni
Authors: Balraj Singh, Jun Chen and Ameenah R. Farhan | Citation: Nucl. Data Sheets 194, 3 (2024) | Cutoff date: 8-Jan-2024
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=8790 keV SY | S(n)= 6020 keV SY | S(p)= 18920 keV SY | Q(α)= -15370 keV SY | ||
| Reference: 2021WA16 |
| References: | |||
| A | 76Co β- decay (16 MS) | B | 76Co β- decay (21.7 MS) |
| C | 76Ni IT decay (547.8 NS) | D | 1H(77Cu,2pγ) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABCD | 0+ | 234.7 ms 27 % β- = 100 % β-n = 14.0 36 | |||||
| 990.15 25 | ABCD | (2+) | 990.14 25 | 100 | 0.0 | 0+ | ||
| 1920.2 4 | BCD | (4+) | 930.00 25 | 100 | 990.15 | (2+) | ||
| 2275.6 5 | BC | (6+) | 355.43 25 | 100 | 1920.2 | (4+) | ||
| 2418.2 5 | BC | (8+) | 547.8 ns 33 % IT = 100 | 142.58 25 | 100 | [E2] | 2275.6 | (6+) |
| 2994.7 5 ? | A | (0+,2+) | 2004.5 4 ? | | 990.15 | (2+) | ||
| 3431 50 ? | D | 2441 50 ? | 100 | 990.15 | (2+) | |||
| 3828 69 ? | D | 2838 69 ? | 100 | 990.15 | (2+) | |||
| 4147 35 | D | (4+,5+) | 2227 35 | 100 | 1920.2 | (4+) | ||
E(level): From Eγ values
Jπ(level): From comparison with shell-model calculations (2005Ma59,2015So23), and systematics of even-even nuclei in this mass region
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - Yrast band | |||||||
| 0.0 | 0+ | 234.7 ms 27 % β- = 100 % β-n = 14.0 36 | |||||
| 990.15 25 | (2+) | 990.14 25 | 100 | 0.0 | 0+ | ||
| 1920.2 4 | (4+) | 930.00 25 | 100 | 990.15 | (2+) | ||
| 2275.6 5 | (6+) | 355.43 25 | 100 | 1920.2 | (4+) | ||
| 2418.2 5 | (8+) | 547.8 ns 33 % IT = 100 | 142.58 25 | 100 | [E2] | 2275.6 | (6+) |
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 2418.2 | (8+) | 547.8 ns 33 % IT = 100 | 142.58 25 | [E2] | 0.1482 | B(E2)(W.u.)=1.01 14, α=0.1482, α(K)=0.1319 21, α(L)=0.01417 23, α(M)=0.00197 3, α(N)=7.34E-5 12 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 234.7 ms 27 % β- = 100 % β-n = 14.0 36 | α total of 1441 implants were detected, and 43 correlated βn coincidences were observed (2010Ho12). E(level): Yrast band. |
| 990.15 | (2+) | E(level): Yrast band. | |
| 1920.2 | (4+) | E(level): Yrast band. | |
| 2275.6 | (6+) | E(level): Yrast band. | |
| 2418.2 | (8+) | 547.8 ns 33 % IT = 100 | Configuration=νg9/22 (2004Sa13). E(level): Yrast band. |
| E(level) | E(gamma) | Comments |
| 990.15 | 990.14 | E(γ): Weighted averages of values from 76Co β- decay (21.7 ms) and 76Ni IT decay (547.8 ns) |
| 1920.2 | 930.00 | E(γ): Weighted averages of values from 76Co β- decay (21.7 ms) and 76Ni IT decay (547.8 ns) |
| 2275.6 | 355.43 | E(γ): Weighted averages of values from 76Co β- decay (21.7 ms) and 76Ni IT decay (547.8 ns) |
| 2418.2 | 142.58 | E(γ): Weighted averages of values from 76Co β- decay (21.7 ms) and 76Ni IT decay (547.8 ns) |
| 2994.7 | 2004.5 | E(γ): from 76Co β- decay (16 ms) |
| 3431 | 2441 | E(γ): From 1H(77Cu,2pγ) (2019El02) |
| 3828 | 2838 | E(γ): From 1H(77Cu,2pγ) (2019El02) |
| 4147 | 2227 | E(γ): From 1H(77Cu,2pγ) (2019El02) |
1987Ar21: some evidence of 76Ni production from mass separation of fission products from 235U(n,F)
1995En07: 76Ni production in 9Be(238U,F) E=750 MeV/nucleon; fragment recoil separator at GSI facility, time-of-flight and energy loss measurements of fission products. Cross section for production=14 nb
1998Am04: 76Ni produced by fragmentation of 86Kr beam at 500 MeV/nucleon and identified by mass and time-of-flight measurements at GSI facility.
2005Ho08: fragmentation of 86Kr34+ beam at 140 MeV/nucleon on Be target at Coupled cyclotron facility at NSCL, A1900 fragment separator. Measured half-life.
2010Ho12: 9Be(86Kr,X) E=140 MeV/nucleon; fully-ionized 86Kr beam, A1900 fragment separator at NSCL facility using Bρ-ΔE-Bρ method. After separation, the mixed beam was implanted into the NSCL β-counting system (BCS) consisting of stacks of Si PIN detectors, a double-sided Si strip detector (DSSD) for implantation of ions, and six single-sided Si strip detectors (SSSD) followed by two Si PIN diodes. The identification of each implanted event was made from energy loss, time-of-flight information and magnetic rigidity. The implantation detector measured time and position of ion implantations and β decays. Neutrons were detected with NERO detector. Measured β- and βn-correlated events with ion implants; half-life of 76Ni and delayed-neutron emission probability. This work is from the same group as 2005Ho08
2014Xu07 (also 2014XuZZ): 76Ni produced in 9Be(238U,X), E=345 MeV/nucleon at RIBF-RIKEN facility. Identification of 76Ni nuclei was made on the basis of magnetic rigidity, time-of-flight and energy loss of the fragments using BigRIPS fragment separator. Measured heavy fragment, β and γ spectra using wide-range active silicon strip stopper array (WAS3ABi) for β and ion detection, and EUROBALL-RIKEN Cluster array for γ detection. Decay curves were obtained from time differences between implantation and correlated β decays.
2023Li18, 2014Ts02, 2010Is04, 2006An27, 2003La05: theoretical structure calculations for even-A Ni isotopes.
Theoretical calculations: 85 primary references for structure and 17 for decay characteristics retrieved from the NSR database (www.nndc.bnl.gov/nsr/) are listed in this dataset under ’document’ records.
Q-value: Estimated uncertainties (2021Wa16): 300 for Q(β-), 360 for S(n), 500 for S(p), 580 for Q(α)
Q-value: Q(β-n)=4210 300, S(2n)=9630 360, S(2p)=36110 580 (syst,2021Wa16)