151GD 151TB EC DECAY (25 S) 1978AL15 09NDS 200901
151GD H TYP=FUL$AUT=BALRAJ SINGH$CIT=NDS 110, 1 (2009)$CUT=20-Nov-2008$
151GD c The decay of the {+151}Tb isomeric state was identified by observing
151GD2c five |g rays which belong to {+151}Gd and are not seen in the |e decay
151GD3c of the ground state of {+151}Tb: 326.1, 379.7, 504.4, 522.4 and
151GD4c 830.5~keV. On this basis 1978Al15 propose possible |e feeding to three
151GD5c states: at 705.8, 902.1 and 1210~keV. However, the 705-keV level is
151GD6c known to have a very strong decay branch to the ground state (see
151GD7c {+151}Gd 'adopted gammas'). 1978Al15 do not observe this strong |g ray,
151GD8c only the much weaker 326|g. Therefore, the evaluator suggests that the
151GD9c 326|g does not belong to {+151}Tb |e decay (25~s)
151GD cG RI$Intensity per 100 decay of {+151}Dy
151GD cL J$See 'adopted levels'
151TB P 99.56 6 (11/2-) 25 S 3 2565 4
151GD N 33.8 18 0.066 20 15.15
151GD cN NR$From intensity balance assuming zero ground state feeding.
151GD cN BR$%|e+%|b{++}=6.6~{I20}, from I(|g+ce)(22.9|g)+I(|g+ce)(72.5|g) (|g's
151GD2cN in {+151}Tb from it decay) and I(|g+ce)(379|g in {+151}Gd from |e
151GD3cN decay)
151GD PN 3
151GD L 0.0 7/2-
151GD L 379.7 9/2-
151GD E 0.14 7 1.7 8 4.8324 1.8 10
151GDS E EAV= 573.97 6$CK= 0.7721$CL= 0.1154$CM+= 0.03345
151GD G 379.70 6 2.83 15M1(+E2) 0.041 11
151GDS G KC=0.034 10$LC=0.0055 7$MC=0.00121 12$NC+=0.00032 4
151GDS G NC=0.00028 3$OC=4.2E-5 6$PC=2.4E-6 9
151GD L 705.8 11/2- ?
151GD G 705.8 S
151GD cG RI$I|g(706)|>I|g (504) is expected
151GD L 902.1 13/2-
151GD E 0.020 7 1.5 5 4.6521 1.5 7
151GDS E EAV= 344.20 6$CK= 0.8259$CL= 0.1249$CM+= 0.03625
151GD G 522.40 100.68 6
151GD L 1210.2 11/2-
151GD E 0.006220 3.812 4.0720 3.8 17
151GDS E EAV= 208.58 6$CK= 0.8339$CL= 0.1274$CM+= 0.03704
151GD G 504.50 200.23 7
151GD G 830.50 101.48 10