ADOPTED LEVELS for 223At

Author: E. Browne |  Citation: Nucl. Data Sheets 93, 846 (2001) |  Cutoff date: 1-May-2001 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=3038 keV 16S(n)= 5596 keV 22S(p)= 6.35×103 keV 5Q(α)= 4.72×103 keV SY
Reference: 2012WA38

General Comments:

223At activity was produced by spallation of 600-MeV photons on targets of 232Th. Assignment to 223At is based on mass separation. The disintegration rate was determined by measuring the β- activity with a 4π plastic scintillator detector (1989Bu09).

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




E(level)
(keV)
T1/2(level)
  0.0 50 s 7 
% β- = 100

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
  0.0 50 s 7 
% β- = 100
%α≈0.008, estimated by evaluator from systematics of T1/2(α) in 213At, 215At, 217At, and 219At. Alpha particles were not seen.
E(level): %α≈0.008, estimated by evaluator from systematics of T1/2(α) in 213At, 215At, 217At, and 219At. Alpha particles were not seen.

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