ADOPTED LEVELS, GAMMAS for 166Tb
Author: Coral M. Baglin | Citation: Nucl. Data Sheets 109, 1103 (2008) | Cutoff date: 1-Mar-2008
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=4.70×103 keV 7 | S(n)= 5.39×103 keV SY | S(p)= 8.7×103 keV SY | Q(α)= -1.61×103 keV 10 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 166Gd β- decay | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
| 0.0 | A | (2-) | 25.1 s 21 % β- = 100 | ||||
| 40.00 16 | A | (-) | 40.0 2 | 100 | 0.0 | (2-) | |
| 158.80 16 | A | 118.8 2 158.8 2 | 100 27 100 27 | 40.00 0.0 | (-) (2-) | ||
| 694.8 3 | A | 536.0 2 | 100 | 158.80 | |||
| 1015.50 23 | A | 975.5 3 1015.5 3 | 84 21 100 | 40.00 0.0 | (-) (2-) | ||
E(level): From least-squares fit to Eγ.
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | (2-) | 25.1 s 21 % β- = 100 | Jπ(level): The g.s. configuration is likely to Be (π 3/2[411])#(ν 1/2[521]) based on Jπ(g.s.)=3/2+ for neighboring Tb isotopes and Jπ(g.s.)=1/2- for the n=101 isotones 169Er, 171Yb and 173Hf, so Jπ=1- or 2- is expected for 166Tb; log f1ut<8.5 to 2+ and (3-), log ft=6.8 (log f1ut=8.5 3) to 4+. |
| E(level) | E(gamma) | Comments |
Production: 238U(p,F) E=15.5 MeV, Gas-jet coupled JAERI-ISOL (1996Ic01,2005Ic02).
Q-value: Note: Current evaluation has used the following Q record 4695 70 5170 syst 8580 syst-1540 syst 2003Au03,2007Ha57
Q-value: Uncertainty in S(n), S(p), Q(α) is 220, 510 and 310, respectively (2003Au03).