ADOPTED LEVELS, GAMMAS for 165Tb
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 194, 460 (2024) | Cutoff date: 31-Oct-2022
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=3023.4 keV 17 | S(n)= 6555.2 keV 24 | S(p)= 8184.1 keV 18 | Q(α)= -1222 keV 11 | ||
| Reference: 2021WA16 |
| References: | |||
| A | 9Be(238U,Fγ) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0 | A | (3/2+) | 2.11 m 10 % β- = 100 | |||||
| 55 4 | A | (5/2+) | 55 4 | 100 | (M1) | 0 | (3/2+) | |
| 131 5 | A | (7/2+) | 76 2 | 100 | (M1) | 55 | (5/2+) | |
| 207 5 | A | (7/2-) | 0.81 µs 8 % IT = 100 | 76 2 152 2 | 38 5 100 16 | (E1) (E1) | 131 55 | (7/2+) (5/2+) |
Jπ(level): As given by 2017Gu08 in 9Be(238U,Fγ), based on configuration assignment for the g.s. and the 0.81-μs isomer. Other Jπ assignments from multipolarity assignments
M(γ): Assigned by 2017Gu08 in 9Be(238U,Fγ), based on intensity balances
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 55 | (5/2+) | 55 4 | (M1) | 12.3 | α=12.3 13 | |
| 131 | (7/2+) | 76 2 | (M1) | 4.8 | α=4.8 4 | |
| 207 | (7/2-) | 0.81 µs 8 % IT = 100 | 76 2 | (E1) | 0.62 | B(E1)(W.u.)=1.40E-7 +29-24, α=0.62 5 |
| (7/2-) | 0.81 µs 8 % IT = 100 | 152 2 | (E1) | 0.098 | B(E1)(W.u.)=4.6E-8 6, α=0.098 4 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0 | (3/2+) | 2.11 m 10 % β- = 100 | Configuration=π3/2[411] (2017Gu08); systematics of Z=65 deformed odd-A nuclei. |
| 207 | (7/2-) | 0.81 µs 8 % IT = 100 | Configuration=π7/2[523] (2017Gu08). |
| E(level) | E(gamma) | Comments |
| 131 | 76 | E(γ): Multiply placed |
| 207 | 76 | E(γ): Multiply placed |
Mass measurement: 2020Vi04
1983Gr02: 165Tb produced and identified in SF decay of 252Cf followed by separation of terbium fraction by liquid chromatographic technique. Measured Eγ, Iγ from 165Tb decay to 165Dy
From x-ray and γ-ray spectra, 1998Ic02 suggest that a 50.3-keV γ ray in 165Tb is associated with the β decay of 165Gd to 165Tb
Theoretical calculations: 2019No05
Q-value: S(2n)=12136 4, S(2p)=18593.0 18 (2021Wa16).