ADOPTED LEVELS, GAMMAS for 158W
Authors: B. Singh and N. Nica | Citation: ENSDF | Cutoff date: 31-DEC-2017
Full ENSDF file | Adopted Levels (PDF version)
| S(n)= 12234 keV SY | S(p)= 1328 keV SY | Q(α)= 6613 keV 3 | |||
| Reference: 2017WA10 |
| References: | |||
| A | 159Re p decay (20 μs) | B | 162Os α decay (2.1 MS) |
| C | 102Pd(58Ni,2nγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | Final Levels | |
| 0.0 | ABC | 0+ | 1.25 ms 21 % α = 100 | |||
| 913 | C | (2+) | 913 | 0.0 | 0+ | |
| 1679 | C | (4+) | 766 | 913 | (2+) | |
| 1888 8 | C | (8+) | 0.143 ms 19 % IT = ? % α ≈ 100 % 2p ≤ 0.17 | |||
| 2048 | C | (6+) | 369 | 1679 | (4+) | |
| 2846 | C | (10+) | 958 | 1888 | (8+) | |
| 3690 | C | (12+) | 844 | 2846 | (10+) | |
| 4165 | C | (14+) | 475 | 3690 | (12+) | |
| 4368 | C | (16+) | 203 | 4165 | (14+) | |
E(level): From Eγ values, except that the isomer energy is based on observed Eα from its decay
Jπ(level): From 2017Jo09, based on yrast sequences built on g.s. and the (8+) isomer, and shell-model configurations
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | Final Levels | |||
| Band 1 - γ cascade based on g.s. | |||||||
| 913 | (2+) | ||||||
| 1679 | (4+) | 766 | 913 | (2+) | |||
| 2048 | (6+) | 369 | 1679 | (4+) | |||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | Final Levels | |||
| Band 2 - γ cascade based on (8+) isomer. | |||||||
| 1888 8 | (8+) | 0.143 ms 19 % IT = ? % α ≈ 100 % 2p ≤ 0.17 | |||||
| 2846 | (10+) | 958 | 1888 | (8+) | |||
| 3690 | (12+) | 844 | 2846 | (10+) | |||
| 4165 | (14+) | ||||||
| 4368 | (16+) | 203 | 4165 | (14+) | |||
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 913 | (2+) | E(level): Proposed configuration=νf7/22 (2017Jo09). | |
| 1679 | (4+) | E(level): Proposed configuration=νf7/22 (2017Jo09). | |
| 1888 | (8+) | 0.143 ms 19 % IT = ? % α ≈ 100 % 2p ≤ 0.17 | %2p branch at 90% confidence level, corresponding to partial T1/2|>85 ms for 2p-decay mode (2017Jo09). E(level): %2p branch at 90% confidence level, corresponding to partial T1/2|>85 ms for 2p-decay mode (2017Jo09). |
| 2048 | (6+) | E(level): Proposed configuration=νf7/22 (2017Jo09). | |
| 2846 | (10+) | E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09). E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09). | |
| 3690 | (12+) | E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09). | |
| 4165 | (14+) | E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09). | |
| 4368 | (16+) | E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09). E(level): Proposed configuration=πh11/22~#νf7/22, based on shell-model calculations (2017Jo09). |
Levels: With S(2p)(158W)=390 340 (syst,2017Wa10), all the observed excited states are expected to be unbound towards two-proton emission, but no evidence has been found for this decay mode for the decay of the (8+) isomer
Q-value: ΔS(n)=500, ΔS(p)=335 (2017Wa10)
Q-value: S(2p)=394 syst 335, Q(ε)=7534 syst 358, Q(εp)=7982 syst 358 (2017Wa10)