ADOPTED LEVELS, GAMMAS for 208Fr
Author: M. J. Martin | Citation: Nucl. Data Sheets 108,1583 (2007) | Cutoff date: 1-Jun-2007
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=-4381 keV 20 | S(n)= 7893 keV 21 | S(p)= 1320 keV 15 | Q(α)= 6785 keV 24 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 212Ac α decay | B | 9Be(238U,X) |
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | M(γ) | Final Levels | |
| 0.0 | AB | 7+ | 59.1 s 3 % ε = 11 3 % α = 89 3 | ||||
| 633 | B | (9+) | 633 | 0.0 | 7+ | ||
| 827 | B | (10-) | ≈ 200 ns | 194 | [E1] | 633 | (9+) |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| 0.0 | 7+ | 59.1 s 3 % ε = 11 3 % α = 89 3 | μ=4.75 10 (1985Co24,1986Ek02,2005St24), Q=0.00 4 (1985Co24,2005St24) Isotope shift: Δ<r2>=-0.20804 12 relative to 212Fr (1987Co19). This replaces the earlier result by the same authors (1985Co24). |
No SF isomers with 2 ns|<T1/2|<2000 s (σ>0.07 μb) observed from search for fission fragments following bombardment of 197Au with 85- to 165-MeV 16O (1970Bj02).
Q-value: Note: Current evaluation has used the following Q record -4379 49 7895 67 1323 53 6772 3 2003Au03