121SN 121IN B- DECAY (23.1 S) 1976FO02 10NDS 201006
121SN H TYP=FUL$AUT=S. OHYA$CIT=NDS 111, 1619 (2010)$CUT=20-Jan-2009$
121SN c The decay scheme is that proposed by 1976Fo02 based
121SN2c on energy sums and |g|g-coincidence data
121SN cL E E(levels) are based on a least-squares fit to the
121SN2cL E(|g's) of 1976Fo02
121SN cL J From adopted levels
121IN P 0.0 9/2+ 23.1 S 6 3363 27
121SN N 1.00 7 1.0 1.0 1.0
121SN cN NR$From the assumption of 100% |b{+-} feeding to 926 level. Feedings to
121SN2cN 6.3 and 664 levels can be neglected. The intensity balance at 664 level
121SN3cN suggests negligible direct |b{+-} feeding, and log| {Ift}=6.5 for
121SN4cN feeding of the 6.3 level gives I(|b{+-})=2.5%. This log| {Ift} is
121SN5cN characteristic of 11/2- to 9/2+ transitions in this mass region.
121SN PN 3
121SN G 1092.8 4 0.34 3
121SN L 0.0 3/2+ 27.03 H 4
121SN L 6.30 6 11/2- 43.9 Y 5 M1
121SN G 6.29 8 [M4] 8.7E10 10 S
121SNS G LC=5.6E10 6$MC=2.6E10 3$NC+=4.7E9 6
121SNS G NC=4.7E9 6$OC=1.38E7 14
121SN cG E from energy difference between 919.28|g and 925.57|g
121SN cG M from decay scheme
121SN cG TI$The isomeric 6.30 level is fed in 11.3% {I6} of the decays of
121SN2cG {+121}In |b{+-} decay (23.1 s). See {+121}Sn IT decay and {+121}Sn
121SN3cG |b{+-} decay (43.9 y) for radiation from this isomer.
121SN L 60.34 2 1/2+
121SN G 60.34 2 M1 2.40 0.22 4
121SNS G K/T=0.609 5$L/T=0.0782 13$M/T=0.0154 3$N+/T=0.00313 6
121SNS G N/T=0.00288 5$O/T=0.000249 5
121SN cG M from |a(L)exp=0.20 {I5}
121SN cG TI expected from 808|g-60|g cascade
121SN L 663.62 6 7/2-,9/2-
121SN G 657.32 7 7.1 5 M1,E2 C
121SNS G CC=0.0038 3$KC=0.0033 3$LC=0.000411 21$MC=8.1E-5 4$NC+=1.64E-5 10
121SNS G NC=1.51E-5 8$OC=1.29E-6 12
121SN cG M$|a(K)exp=0.009 {I5} allows mult=M1, E2, M2, or E3. The placement in
121SN2cG in the decay scheme requires DPI=no, so mult=M1,E2
121SN L 869.23 5 5/2+
121SN G 808.7 2 0.22 4
121SN G 869.31 101.1 1
121SN L 925.58 5 7/2+ 0.25 NS 6
121SN cL T from (|b)(925.57|g)(t) (1976Fo02)
121SN B 100 10 4.33 5 C
121SNS B EAV=984 13
121SN G 56.35 2 0.19 2 M1+E2 0.68 17 5.9 10
121SNS G KC=4.5 7$LC=2.5 8$MC=0.51 16$NC+=0.09 3
121SNS G NC=0.09 3$OC=0.0031 7
121SN cG M$from |a deduced intensity balance at 869 level in {+121}In |b{+-}
121SN2cG decay (23.1 s)
121SN G 261.96 3 7.9 5 E1 0.01230 C
121SNS G KC=0.01069 15$LC=0.001301 19$MC=0.000253 4$NC+=5.12E-5 8
121SNS G NC=4.73E-5 7$OC=3.88E-6 6
121SN cG M from |a(K)exp=0.008 {I4}
121SN G 919.28 7 4.2 3
121SN G 925.57 7 87 6 (E2) C
121SNS G CC=0.001531 22$KC=0.001328 19$LC=0.0001644 23$MC=3.21E-5 5$NC+=6.54E-6
121SNS G NC=6.03E-6 9$OC=5.11E-7 8
121SN cG M from |a(K)exp=0.0012 {I4} and decay scheme