ADOPTED LEVELS, GAMMAS for 164Gd
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 147, 1 (2018) | Cutoff date: 30-Nov-2017
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=2300 keV SY | S(n)= 6530 keV SY | S(p)= 10580 keV SY | Q(α)= -1960 keV SY | ||
| Reference: 2017WA10 |
| References: | |||
| A | 164Eu β- decay (4.15 S) | B | 164Gd IT decay (0.580 μs) |
| C | 252Cf SF decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC | 0+ | 45 s 3 % β- = 100 | |||||
| 73.27 5 | ABC | (2+) | 2.77 ns 14 | 73.27 5 | 100 | (E2) | 0.0 | 0+ |
| 241.4 4 | ABC | (4+) | 168.4 4 | 100 | (E2) | 73.27 | (2+) | |
| 502.7 5 | A C | (6+) | 261.3 | | 241.4 | (4+) | ||
| 851.7 6 | C | (8+) | 349.0 | | 502.7 | (6+) | ||
| 1035.4 4 | B | (3+) | 794? 961.9 4 | 100 | [M1] | 241.4 73.27 | (4+) (2+) | |
| 1095.8 4 | B | (4-) | 0.580 µs 23 % IT = 100 | 60.2 854.7 5 | 14 3 100 11 | [E1] [E1] | 1035.4 241.4 | (3+) (4+) |
| 1283.0 7 | C | (10+) | 431.3 | | 851.7 | (8+) | ||
| 1793.6 7 | C | (12+) | 510.6 | | 1283.0 | (10+) | ||
| 2376.4 8 | C | (14+) | 582.8 | | 1793.6 | (12+) | ||
E(level): From Eγ data, assuming Δ(Eγ)=0.3 keV when not stated
Jπ(level): Yrast band assignment for positive-parity states
E(γ): From 252Cf SF decay unless otherwise stated
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
| Band 1 - g.s. band | |||||||
| 0.0 | 0+ | 45 s 3 % β- = 100 | |||||
| 73.27 5 | (2+) | 2.77 ns 14 | 73.27 5 | 100 | (E2) | 0.0 | 0+ |
| 241.4 4 | (4+) | 168.4 4 | 100 | (E2) | 73.27 | (2+) | |
| 502.7 5 | (6+) | 261.3 | | 241.4 | (4+) | ||
| 851.7 6 | (8+) | 349.0 | | 502.7 | (6+) | ||
| 1283.0 7 | (10+) | 431.3 | | 851.7 | (8+) | ||
| 1793.6 7 | (12+) | 510.6 | | 1283.0 | (10+) | ||
| 2376.4 8 | (14+) | 582.8 | | 1793.6 | (12+) | ||
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 73.27 | (2+) | 2.77 ns 14 | 73.27 5 | (E2) | 8.13 | B(E2)(W.u.)=198 +11-9, α=8.13 12 |
| 241.4 | (4+) | 168.4 4 | (E2) | 0.400 | α=0.400 7 | |
| 1095.8 | (4-) | 0.580 µs 23 % IT = 100 | 60.2 | [E1] | 1.124 | α=1.124 22 |
| (4-) | 0.580 µs 23 % IT = 100 | 854.7 5 | [E1] | 0.00154 | α=0.00154 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 0+ | 45 s 3 % β- = 100 | E(level): g.s. band. |
| 73.27 | (2+) | 2.77 ns 14 | E(level): g.s. band. |
| 241.4 | (4+) | E(level): g.s. band. | |
| 502.7 | (6+) | E(level): g.s. band. | |
| 851.7 | (8+) | E(level): g.s. band. | |
| 1283.0 | (10+) | E(level): g.s. band. | |
| 1793.6 | (12+) | E(level): g.s. band. | |
| 2376.4 | (14+) | E(level): g.s. band. |
| E(level) | E(gamma) | Comments |
| 73.27 | 73.27 | E(γ): from 164Eu β- decay I(γ): assumed value M(γ): As assigned by 2017Yo01 in 164Gd IT decay, based on transition intensity balances and ΔJπ |
| 241.4 | 168.4 | E(γ): from 164Gd IT decay M(γ): As assigned by 2017Yo01 in 164Gd IT decay, based on transition intensity balances and ΔJπ |
1988Gr14, 1990An31: 164Gd produced in 252Cf SF decay. The assignment is based on the observation of Tb K| x ray-lines, produced in the daughter nucleus due to internal conversion.
For theoretical nuclear structure calculations, consult NSR database, for about 20 references. These are listed in the ENSDF dataset as document records.
Q-value: Estimated uncertainties (syst,2017Wa10): ΔQ(β-)=140, ΔS(n)=100, ΔS(p)=120, ΔQ(α)=100 (2017Wa10).
Q-value: S(2n)=11640 100, S(2p)=19820 220 (syst,2017Wa10)