ADOPTED LEVELS for 263Sg

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-)=-4.3×103 keV SYS(n)= 6.25×103 keV SYS(p)= 3.36×103 keV SYQ(α)= 9.40×103 keV 6
Reference: 2012WA38

References:
  A  267Hs α decay 

General Comments:

Calculations, compilations:

g.s. properties: 1997Mo25, 1995Mo29

Favored α decay: 1993Bu09

Pion emission: 1991Io03

Single-particle Nilsson levels: 1994Cw02

1994Cw02 calculate the following single-particle level sequence: g.s. 7/2[613], 0.00 MeV 11/2[725], 0.01 MeV 3/2[622], 0.03 MeV 1/2[620], 0.12 MeV 9/2[615]

Assignment: 249Cf(18O,4n), parent of 259Rf, grandparent of 255No, α-α-α correlation (1974Gh04,1994Gr08) 249Cf(18O,4n), excit, observed SF (1979Dr07) 238U(34S,5n)267Hs α, daughter of 267Hs from α-α correlation (1995Og02)

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

Q-value: Estimated ΔQ(β-)=400, ΔS(n)=300, ΔS(p)=220, ΔQ(α)=100 (1995Au04)





E(level)
(keV)
XREF T1/2(level)
      0.0  1.0 s 2 
% α > 70
% SF < 30
      0.0+XA  
  130+XA  
      0.0+Y  0.12 s
% IT = ?
% α = ?

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.0 1.0 s 2 
% α > 70
% SF < 30
Calculated: T1/2(α)=2 s, T1/2(ε+β+)=60 s, T1/2(SF)=20 s, deduced from Q values (1995KoZL); T1/2(α)≈0.1 s (1990Ha26); T1/2(SF)≈400 s, T1/2(α)≈30 s (1988Lo03).
      0.0+Y 0.12 s
% IT = ?
% α = ?
Reported as a member of α chain from 271110 (1997Ho03,1997Ho13). 1997Au04 cites T1/2=0.36 s 13 from an earlier report by same authors.
E(level): Reported as a member of α chain from 271110 (1997Ho03,1997Ho13). 1997Au04 cites T1/2=0.36 s 13 from an earlier report by same authors.

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