ADOPTED LEVELS, GAMMAS for 199At

Author: Balraj Singh |  Citation: Nucl. Data Sheets 108, 79 (2007) |  Cutoff date: 15-Oct-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-7.32×103 keV 7S(n)= 1.017×104 keV SYS(p)= 639 keV 19Q(α)= 6777.2 keV 12
Reference: 2012WA38

References:
  A  203Fr α decay (0.549 S)  B  203Fr α decay (60 MS):?
  C  (HI,xnγ) 

General Comments:

199At first identified by 1967Tr06 in 185Re(20Ne,6n) and 187Re(20Ne,8N) reactions at E=100-200 MeV

Discussions on nuclear structure effects on α anisotropy: 2002De24, 1996Sc35, 1995Ro39, 1992Be52, 1988Be44, 1988Wo11, 1986Wo03

Mass measurement; mass mapping: 1999Sc46, 2002No01

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

Q-value: Q(εp)=3260 60 (2003Au03)







E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
    0A C (9/2-) 7.03 s 15 
% ε = 10 5
% α = 90 5
 
  0+X? B  (1/2+)    
  573  C (13/2+) 0.58 µs 13    573

Back to top

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
    0(9/2-) 7.03 s 15 
% ε = 10 5
% α = 90 5
Branching from 1980Ew03 (%α given as 92 +3-8).

Back to top