ADOPTED LEVELS for 253Lr
Authors: E. Browne, J. K. Tuli | Citation: Nucl. Data Sheets 114, 1041 (2013) | Cutoff date: 1-Mar-2012
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=-4980 keV SY | S(n)= 8233 keV SY | S(p)= 1584 keV SY | Q(α)= 8918 keV 20 | ||
Reference: 2012WA38 |
References: | |||
A | 257Db α decay (2.3 S) | B | 257Db α decay (0.67 S) |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) |
0.0 | A | (7/2-) | 0.57 s +7-6 % α ≈ 98.7 % SF ≈ 1.3 |
0+Y | B | (1/2-) | 1.49 s +30-21 % α = 92 5 % SF = 8 5 |
107 18 | A | (9/2-) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0+Y | (1/2-) | 1.49 s +30-21 % α = 92 5 % SF = 8 5 | %α: from measured %SF=8 5 (2001He35). |
Calculations, compilations:
g.s. properties: 1997Mo25, 1995Mo29, 2004Pa40
Single-particle Nilsson levels: 1994Cw02, 2004Pa40
Half-lives for α and β decay: 1997Mo25
1994Cw02 have calculated the following single-particle level sequence: g.s., 7/2[514]; 0.04 MeV, 1/2[521]; 0.15 MeV, 9/2[624]; 0.69 MeV, 5/2[512]; 0.88 MeV, 7/2[633].
2004Pa40 have calculated following single-particle level sequence 0.09 MeV, 9/2[624]; 0.10 MeV, 1/2[521]; 0.56 MeV, 5/2[512]; 0.71 MeV, 7/2[633]; 1.08 MeV, 3/2[521].
Assignment:
205Tl(50Ti,2n)257Db(α), parent of 249Md (1985He22,1986He28) granddaughter of 261Bh (1989Mu09)
Q-value: 2012Wa38: ΔQ(β-)=457 syst, ΔS(n)=312 syst, ΔS(p)=202 syst