ADOPTED LEVELS for 49Ar

Author: T. W. Burrows |  Citation: Nucl. Data Sheets 109, 1879 (2008) |  Cutoff date: 14-Jul-2008 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=1.28×104 keV SYS(n)= 2.5×103 keV SYS(p)= 2.01×104 keV SYQ(α)= -1.53×104 keV SY
Reference: 2012WA38

General Comments:

2003We09: U(p,F) E=1.4 GeV. Isotopes extracted, mass separated, and implanted into an aluminized mylar tape; implantation point in center of cylindrical 4π neutron long counter consisting of 12 parallel-coupled 3He pc’s embedded in a paraffin moderator. β-’s detected by a 1.5-mm plastic detector. Measured β-(t), n(t), and β-n(t). Analysis of time spectra restricted to data from a doubly charged 49Ar beam; beam gate set to 200 ms after every proton pulse and a 20 ms delay; 3 h measurement (1320 proton pulses on target).

Other: 1988GuZV

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

Q-value: Q(β-n)=3.91 MeV 30 (2003Au03. Systematics)




E(level)
(keV)
T1/2(level)
  0.0 170 ms 50 
% β- = 100
% β-n = 65 20

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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