ADOPTED LEVELS, GAMMAS for 207Fr
Authors: F.G. Kondev, S. Lalkovski | Citation: Nucl. Data Sheets 112, 707 (2011) | Cutoff date: 1-Aug-2010
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-6.38×103 keV 6 | S(n)= 9.67×103 keV 4 | S(p)= 1018 keV 23 | Q(α)= 6893 keV 20 | ||
Reference: 2012WA38 |
References: | |||
A | 211Ac α decay | B | 181Ta(30Si,4nγ) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
0 | AB | 9/2- | 14.8 s 1 % ε = 5 2 % α = 95 2 | |||||
599.6 5 | B | (13/2-) | 599.6 5 | 100 | [E2] | 0 | 9/2- | |
1154.8 7 | B | (17/2-) | 555.2 5 | 100 | (E2) | 599.6 | (13/2-) | |
1808.5 9 | B | (21/2-) | 653.7 5 | 100 | 1154.8 | (17/2-) | ||
1885.2 9 | B | 730.4 5 | 100 | 1154.8 | (17/2-) |
E(level): From a least-squares fit to Eγ
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | M(γ) | Final Levels | |
Band 1 - Weakly collective structure based on the (π h9/2)+1 | |||||||
0 | 9/2- | 14.8 s 1 % ε = 5 2 % α = 95 2 | |||||
599.6 5 | (13/2-) | 599.6 5 | 100 | [E2] | 0 | 9/2- | |
1154.8 7 | (17/2-) | 555.2 5 | 100 | (E2) | 599.6 | (13/2-) | |
1808.5 9 | (21/2-) | 653.7 5 | 100 | 1154.8 | (17/2-) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0 | 9/2- | 14.8 s 1 % ε = 5 2 % α = 95 2 | μ=+3.89 8 (1985Co24,2005St24), Q=-0.16 5 (1985Co24,2005St24) Δ<r2>=-0.21794 16 relative to 212Fr (1987Co19, supersedes 1985Co24). The uncertainty is statistical only. Uncertainty in density and calibration add a few percent (1987Co19). E(level): Δ<r2>=-0.21794 16 relative to 212Fr (1987Co19, supersedes 1985Co24). The uncertainty is statistical only. Uncertainty in density and calibration add a few percent (1987Co19). Weakly collective structure based on the (π h9/2)+1. |
599.6 | (13/2-) | E(level): Weakly collective structure based on the (π h9/2)+1. | |
1154.8 | (17/2-) | E(level): Weakly collective structure based on the (π h9/2)+1. | |
1808.5 | (21/2-) | E(level): Weakly collective structure based on the (π h9/2)+1. |
E(level) | E(gamma) | Comments |
599.6 | 599.6 | M(γ): A2=-0.04 4 (2008Ha39). The A2 value is inconsistent with the proposed stretched E2 assignment in 2008Ha39, where a possible contamination from a transition of similar energy in 204At is suggested |
1154.8 | 555.2 | M(γ): A2=+0.67 12 (2008Ha39). |
SF isomer with T1/2>8 ns was reported by 1969Ru08, but not confirmed by 1970Bj02
Q-value: Note: Current evaluation has used the following Q record -6380 80 9.67×103 6 1020 50 6900 50 2003Au03