39K     39AR B- DECAY (268 Y)         1965ST09,1950BR66         18NDS    201803
 39K   H TYP=FUL$AUT=JUN CHEN$CIT=NDS 149, 1 (2018)$CUT=1-Jan-2018$
 39K  c  1965St09: measured parent T{-1/2}
 39K  c  1950Br66: measured E|b, end-point energy=565 keV {I5}.
 39K  c  1952Ze01: measured parent T{-1/2}
 39K  c  2002Go28: measured E|b
 39K  c  2007Be13: measured specific activity in natural argon.
 39K  D  PRODUCTION OF 39AR BY NEUTRONS ON ^KCl (1952ZE01), BY NEUTRON
 39K 2D  CAPTURE IN 38AR (1952KA44)
 39AR  P 0            7/2-             268 Y     8              565       5
 39AR cP J,T$From Adopted Levels of {+39}Ar.
 39AR cP QP$From 2017Wa10
 39K   N                       1.0       1.0
 39K   L 0            3/2+
 39K  cL J$from Adopted Levels
 39K   B 565       5  100                 10.10  2                           1U
 39K S B EAV=218.8 21
 39K  cB E$from end-point energy=565 {I5} (1950Br66)
 39K  cB IB$1950Br66 measured less than 0.1% branching for E|g>300 keV,
 39K 2cB indicating all |b decays feeding ground state