ADOPTED LEVELS for 261Lr

Author: Agda Artna-cohen |  Citation: Nucl. Data Sheets 88, 155 (1999) |  Cutoff date: 31-Jul-1999 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1.76×103 keV SYS(n)= 6.79×103 keV SYS(p)= 3.3×103 keV SYQ(α)= 8.14×103 keV SY
Reference: 2012WA38

General Comments:

Calculations, compilations:

g.s. properties: 1997Mo25, 1995Mo29

Single-particle Nilsson levels: 1994Cw02

1994Cw02 calculate the following single-particle level sequence: g.s. 1/2[521], 0.07 MeV 7/2[514], 0.15 MeV 9/2[624], 0.62 MeV 7/2[633], 0.62 MeV 5/2[512]

Assignment: 254Es+22Ne, ms, ion chem; observed SF (1989HuZU). 248Cm(18O,5n)261Rf(ε); Lr ion chem. Observed SF (1991HeZT).

Q-value: Note: Current evaluation has used the following Q record

Q-value: Estimated ΔQ(β-)=230, ΔS(n)=230, ΔS(p)=300, ΔQ(α)=200 (1995Au04)




E(level)
(keV)
T1/2(level)
  0.0 39 m 12 
% SF = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0 39 m 12 
% SF = ?
Calculated T1/2(SF)≈5 h (1989Mo03).

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