ADOPTED LEVELS for 261Db

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-)=-3.76×103 keV SYS(n)= 7.49×103 keV SYS(p)= 2.19×103 keV SYQ(α)= 9.22×103 keV SY
Reference: 2012WA38

General Comments:

Calculations, compilations:

Favored α decay: 1993Bu09

g.s. properties: 1997Mo25, 1995Mo29

Single-particle Nilsson levels: 1994Cw02

1994Cw02 calculate the following single-particle level sequence: g.s. 9/2[624], 0.22 MeV 5/2[512], 0.30 MeV 1/2[521], 0.31 MeV 7/2[514]

Assignment: 250Cf(15N,4n), 249Bk(16O,4n), parent of 257Lr (1971Gh01); 243Am(22Ne,4n) excit, angular distribution of recoil atoms, excit (1971Fl02); 250Cf(15N,4n), 243Am(22Ne,4n), parent of 257Lr (1998La30)

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

Q-value: Estimated ΔQ(β-)=400, ΔS(n)=400, ΔS(p)=300, ΔQ(α)=100 (1995Au04)




E(level)
(keV)
T1/2(level)
  0.0 1.8 s 4 
% α ≥ 82
% SF ≤ 18

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0 1.8 s 4 
% α ≥ 82
% SF ≤ 18
Calculated: T1/2(ε+β+)>100 s, T1/2(α)=1.8 s (1997Mo25); T1/2(SF)≈1×102 s (1988Lo03).

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