121XE 121CS EC DECAY (155 S) 1991GE02 10NDS 201006
121XE H TYP=FUL$AUT=S. OHYA$CIT=NDS 111, 1619 (2010)$CUT=20-Jan-2009$
121XE c 1991Ge02: La(p,spall) E=600 MeV, on-line ms; measured |g, |g|g,
121XE2c |g|g(t). La({+3}He,spall) E=280 MeV on-line ms; measured ce with Si
121XE3c detector with magnetic |b{++} shield, |b{++} with 4|p|b plastic scin.
121XE4c Authors proposed level scheme in the mixed decays of {+121}Cs (155 s)
121XE5c and {+121}Cs (122 s) and also showed selected levels in the decay of
121XE6c {+121}Cs (122 s).
121XE c 1981So06: {+124}Xe(p,4n) E=52 MeV, E|g, I|g, |g|g, E|b{++}, I|b{++},
121XE2c x/|g ratio, deduced decay scheme.
121XE c 1984PaZZ: measured Q(|b{++})=5.21 MeV {I22} from shape-fitting
121XE2c procedure (a different method from F-K analysis)
121XE c 1975We23: La(p,3pxn) E=600 MeV ms; measured |g in coincidence with
121XE2c |b{++}
121XE c Decay scheme is from evaluator based on that in 1991Ge02.
121XE2c Evaluator assumed no direct |e+|b{++} feeding from {+121}Cs |e
121XE3c decay (155 s) to the levels at 179.44 keV and 196.081 keV which are
121XE4c strongly fed from {+121}Cs 9/2(+) state, and also assumed no direct
121XE5c |e+|b{++} feeding from {+121}Cs |e decay (122 s) to the levels at
121XE6c 153.95 keV, 239.74 keV, 264.5 keV, 427.12 keV and 449.85 keV which are
121XE7c strongly fed from {+121}Cs 3/2(+) state. See {+121}Cs |e decay (122 s).
121XE8c The decay scheme of {+121}Cs g.s. |e+|b{++} decay is still tentative
121XE9c due to similarity of half-lives of g.s. and the isomeric state
121XE cL E E(levels) are based on a least-squares fit to E(|g's)
121XE cL J From adopted levels
121XE cL T From |g|g(t)
121XE cG CC Normalized to |a(K)exp=0.303 for 153.9|g (E2 theory)
121XE cG RI$Evaluator has removed the contribution from {+121}Cs |e decay
121XE2cG (122 s). Evaluator assumed no direct |e+|b{++} feeding from {+121}Cs |e
121XE3cG decay (155 s) to the levels at 179.44 keV and 196.081 keV which are
121XE4cG strongly fed from {+121}Cs 9/2(+) state, and also assumed no direct
121XE5cG |e+|b{++} feeding from {+121}Cs |e decay (122 s) to the levels at
121XE6cG 153.95 keV, 239.74 keV, 264.5 keV, 427.12 keV and 449.85 keV which are
121XE7cG strongly fed from {+121}Cs 3/2(+) state. See {+121}Cs |e decay (122 s)
121XE cG Unplaced |g's are not assigned to g.s. or
121XE2cG isomeric state
121CS P 0 3/2(+) 155 S 4 5372 18
121XE N 0.033 15 1.00 1.00 45
121XE cN NR from |SI(|g+ce) to g.s. + I(|e+|b{++} to g.s.)=100.
121XE2cN I(|e+|b{++} to g.s.)=54% {I24} measured value from |g{+|+}, I(|b{++})
121XExcN (1991Ge02)
121XE PN 3
121XE G 59.3 5 4 1
121XE G 337.2 3 7 3
121XE G 361.7 3 6 2
121XE G 445.4 3 4 1
121XE G 646.8 3 12 3
121XE G 674.8 2 7 2
121XE G 690.5 2 8 4
121XE G 797.9 4 8 2
121XE G 841.9 7 7 2
121XE G 850.5 3 10 3
121XE G 867.2 4 6 2
121XE G 881.2 3 5 2
121XE G 891.6 3 7 2
121XE G 900.2 3 8 2
121XE G 905.4 4 4 2
121XE G 914.3 3 10 2
121XE G 922.6 3 7 4
121XE G 936.6 3 12 2
121XE G 949.2 3 8 3
121XE G 986.3 4 6 3
121XE G 1060.3 4 8 3
121XE G 1076.7 4 8 3
121XE G 1115.0 8 7 4
121XE G 1140.3 4 30 5
121XE G 1179.8 5 5 2
121XE G 1255.2 5 6 3
121XE G 1276.4 6 10 3
121XE G 1396.2 5 7 3
121XE G 1416.5 5 10 3
121XE G 1432.7 5 40 6
121XE G 1458.0 6 8 3
121XE G 1497.7 6 8 3
121XE G 1511.1 6 8 3
121XE L 0 5/2(+) 40.1 M 20
121XE E 49 22 5.2 23 5.5 3 54 24
121XES E EAV=1994.4 86$CK=0.0828 10$CL=0.01097 13$CM+=0.00298 4
121XE L 153.9611 (1/2+) 80 NS 15
121XE E 12 5 1.4 6 6.1 3 13 6
121XES E EAV=1921.4 86$CK=0.0911 11$CL=0.01207 14$CM+=0.00328 4
121XE G 153.9 2 455 15 E2 0.397
121XES G KC=0.301 5$LC=0.0766 12$MC=0.01615 25$NC+=0.00357 6
121XES G NC=0.00323 5$OC=0.000344 6
121XE cG M from K/L=3.9 {I4}
121XE cG $|a(K)(E2)=0.303 is used as normalization
121XE L 179.4413 7/2(+)
121XE G 179.4 2 81 8 M1 0.1606
121XES G KC=0.1381 20$LC=0.0180 3$MC=0.00366 6$NC+=0.000852 13
121XES G NC=0.000757 11$OC=9.47E-5 14
121XE cG M from |a(K)exp=0.15 {I2}, K/L=7.4 {I4}
121XE L 196.0816 7/2(-) 8 NS 2
121XE G 196.0 2 74 7 E1 0.0325
121XES G KC=0.0281 4$LC=0.00358 6$MC=0.000723 11$NC+=0.0001662 24
121XES G NC=0.0001482 22$OC=1.80E-5 3
121XE cG From |a(K)exp=0.030 {I3}, K/L=8.2 {I9}
121XE L 239.7713 (3/2+)
121XE E 9 4 1.1 6 6.2 3 10 5
121XES E EAV=1880.7 86$CK=0.0962 12$CL=0.01275 15$CM+=0.00346 4
121XE G 85.9 3 62 4 M1 1.267 22
121XES G KC=1.087 19$LC=0.1438 25$MC=0.0292 5$NC+=0.00680 12
121XES G NC=0.00605 11$OC=0.000754 13
121XE cG M from |a(K)exp=1.2 {I2}, K/L=7 {I1}
121XE G 239.6 2 232 14 M1 0.0736
121XES G KC=0.0634 9$LC=0.00820 12$MC=0.001664 24$NC+=0.000388 6
121XES G NC=0.000344 5$OC=4.31E-5 7
121XE cG M from |a(K)exp=0.075 {I15}, K/L=7.5 {I8}
121XE L 355.7715 (5/2-)
121XE E 3.5 17 0.48 23 6.5 3 4.0 19
121XES E EAV=1825.8 86$CK=0.1036 13$CL=0.01374 17$CM+=0.00373 5
121XE G 159.7 2 50 3 M1 0.221
121XES G KC=0.190 3$LC=0.0249 4$MC=0.00505 8$NC+=0.001175 17
121XES G NC=0.001044 15$OC=0.0001305 19
121XE cG M from |a(K)exp=0.20 {I2}, K/L|?8
121XE G 355.9 2 70 4 E1
121XES G CC=0.00672 10$KC=0.00581 9$LC=0.000726 11$MC=0.0001464 21$NC+=3.39E-5 5
121XES G NC=3.02E-5 5$OC=3.72E-6 6
121XE cG M from |a(K)exp=0.007 {I3}
121XE L 427.1217 (3/2+,5/2+)
121XE E 3.3 16 0.48 23 6.5 3 3.8 18
121XES E EAV=1792.1 85$CK=0.1086 13$CL=0.01439 18$CM+=0.00391 5
121XE G 273.2 3 5 1
121XE G 427.1 2 109 7 (M1,E2) 0.0153 13
121XES G KC=0.0130 12$LC=0.00180 3$MC=0.000367 6$NC+=8.47E-5 14
121XES G NC=7.55E-5 12$OC=9.2E-6 4
121XE cG M$(M1,E2)+E0? from |a(K)exp=0.023 {I4}, K/L=6 {I2}
121XE L 449.8412(5/2+)
121XE E 3.8 17 0.6 3 6.4 3 4.4 20
121XES E EAV=1781.4 85$CK=0.1102 14$CL=0.01461 18$CM+=0.00396 5
121XE G 210.1 2 22 2 [E2] 0.1360
121XES G KC=0.1082 16$LC=0.0221 4$MC=0.00462 7$NC+=0.001032 15
121XES G NC=0.000929 14$OC=0.0001028 15
121XE cG M assumed E2 to deduce |a
121XE G 270.2 2 50 4 M1 0.0536
121XES G KC=0.0461 7$LC=0.00595 9$MC=0.001206 17$NC+=0.000281 4
121XES G NC=0.000250 4$OC=3.13E-5 5
121XE cG M from |a(K)exp=0.06 {I2}, K/L=9
121XE G 295.8 2 43 3 (E2) 0.0438
121XES G KC=0.0360 5$LC=0.00619 9$MC=0.001282 19$NC+=0.000290 5
121XES G NC=0.000260 4$OC=2.98E-5 5
121XE cG M from |a(K)exp=0.04 {I1}, K/L=5 {I1}
121XE G 450.1 2 10 3
121XE cG This |g is placed from 449.85 and 646.1 levels in {+121}Cs
121XE2cG |e+|b{++} decay (122 s)
121XE L 497.2 5
121XE E 0.26 13 0.040 20 7.6 3 0.30 15
121XES E EAV=1759.0 85$CK=0.1137 14$CL=0.01508 19$CM+=0.00409 5
121XE G 343.2 4 9 2
121XE L 553.0316
121XE E 0.3 3 0.06 6 7.4 5 0.4 4
121XES E EAV=1732.7 85$CK=0.1181 15$CL=0.01565 20$CM+=0.00425 6
121XE G 373.8 3 11 2
121XE G 398.8 3 14 2
121XE G 553.0 3 36 5
121XE L 619.9116
121XE E 1.5 8 0.26 13 6.7 3 1.8 9
121XES E EAV=1701.1 85$CK=0.1235 16$CL=0.01638 21$CM+=0.00445 6
121XE G 380.1 3 8 2
121XE G 466.0 3 12 3
121XE G 619.9 2 34 5
121XE L 661.0615
121XE E 2.2 10 0.39 18 6.5 3 2.6 12
121XES E EAV=1681.7 85$CK=0.1270 16$CL=0.01685 21$CM+=0.00457 6
121XE G 108.0 2 20 3 M1 0.660
121XES G KC=0.566 9$LC=0.0747 12$MC=0.01517 23$NC+=0.00353 6
121XES G NC=0.00314 5$OC=0.000392 6
121XE cG M from |a(K)exp=0.4 {I1}, K/L=12 {I6}
121XE G 481.6 3 20 4
121XE G 661.1 2 35 4
121XE L 682.4118
121XE E 0.9 5 0.17 9 6.9 3 1.1 6
121XES E EAV=1671.7 85$CK=0.1289 16$CL=0.01710 22$CM+=0.00464 6
121XE G 326.8 2 11 3
121XE G 486.1 3 15 6
121XE G 682.3 3 7 3
121XE L 696.5014
121XE E 1.6 8 0.29 14 6.7 3 1.9 9
121XES E EAV=1665.1 85$CK=0.1302 17$CL=0.01727 22$CM+=0.00469 6
121XE G 456.6 3 21 3 @
121XE G 542.6 2 18 3
121XE G 696.5 2 18 4
121XE L 737.4421
121XE E 1.1 6 0.20 11 6.8 3 1.3 7
121XES E EAV=1645.8 85$CK=0.1339 17$CL=0.01776 23$CM+=0.00482 6
121XE G 497.6 2 29 5
121XE G 558.3 4 10 6
121XE L 946.2 4
121XE E 0.19 12 0.04 3 7.5 4 0.23 15
121XES E EAV=1547.8 85$CK=0.1551 21$CL=0.0206 3$CM+=0.00559 8
121XE G 393.2 3 7 3
121XE cG This |g is placed from 657.6 level in {+121}Cs |e+|b{++}
121XE2cG decay (122 s)
121XE L 1117.6 4
121XE E 0.5 3 0.1 1 7.0 4 0.6 4
121XES E EAV=1467.5 85$CK=0.1756 24$CL=0.0233 4$CM+=0.00633 9
121XE G 456.6 5 10 4 @
121XE G 564.5 5 8 3