138BA 138CS B- DECAY (2.91 M) 1971CA21 17NDS 201711
138BA H TYP=FUL$AUT=JUN CHEN$CIT=NDS 146, 1 (2017)$CUT=30-Sep-2017$
138BA DG CC$FROM BrIcc v2.3a (10-Sep-2014) 2008Ki07, "Frozen Orbitals" appr.
138BA c 1971Ca21: Source of {+138}Cs was produced via the thermal-neutron
138BA2c induced fissions of {+235}U and also the {+138}Ba(n,p) reaction,
138BA3c at CEN, Grenoble. |g and X rays were detected with Ge(Li) detectors
138BA4c (FWHM=1.2 keV at 122 keV, 3-4 keV at 1333 keV) and NaI(Tl) detectors;
138BA5c |b particles and conversion electrons were detected by a |b detector.
138BA6c Measured E|g, I|g, E|b, |b|g-coin, |g|g-coin, |b|g(t). Deduced levels,
138BA7c J, |p, half-life, decay branching, conversion coefficient, |g-ray
138BA8c multipolarity. Systematics of neighboring isotones.
138BA c 1978Au08: Measured E|g, I|g. Deduced levels.
138BA d 1970Ca26: Measured E|g, I|g, |g|g-coin, |b|g(t). Deduced T{-1/2},
138BA2d |g-ray branchings. superseded by 1971Ca21
138BA c Others: 1997Gr09, 1994He33, 1992Gr21
138BA c See also {+138}Cs IT decay (2.91 min)
138BA c All data are from 1971Ca21, unless otherwise noted.
138BA cB IB$From I(|g+ce) intensity balance at each level, with conversion
138BA2cB coefficients calculated using the BrIcc program.
138BA cG RI$Absolute intensity per 100 decays through this branch
138BA cG M,MR$From Adopted Gammas
138BA cL E$From a least-squares fit to |g-ray energies.
138BA cL J$From Adopted Levels
138CS P 79.9 3 6- 2.91 M 10 5375 9
138CS cP J,T$From Adopted Levels of {+138}Cs
138CS cP QP$From 2017Wa10
138BA N 1.0 0.19 3 5.26
138BA cN BR$From %IT=81 {I3}, weighted average of 81.5 {I+25-30} (at 68.3%
138BA2cN confidence level) from 1978Au08 and 75 {I8} from 1971Ca21, deduced from
138BA3cN growth curves of 463|g, 1436|g, and 1010|g. Other: %IT=81.5 {I+50-140}
138BA4cN from 1978Au08 at 99.7% confidence level. The 1010|g is not fed in
138BA5cN |b{+-} decay of 2.9-min {+138}Cs, but follows the |b{+-} decay of the
138BA6cN {+138}Cs ground state (1978Au08,1971Ca21).
138BA PN 1.0 3
138BA L 0.0 0+ STABLE
138BA L 1436.0 2 2+
138BA G 1436.0 2 100 E2 9.17E-4
138BAS G KC=0.000742 11$LC=9.37E-5 14$MC=1.92E-5 3
138BAS G NC=4.14E-6 6$OC=6.34E-7 9$PC=4.62E-8 7$IPC=5.73E-5 8
138BA L 1899.0 2 4+
138BA G 463.0 2 99 5 E2 0.01221
138BAS G KC=0.01023 15$LC=0.001576 23$MC=0.000329 5
138BAS G NC=7.01E-5 10$OC=1.035E-5 15$PC=6.11E-7 9
138BA L 2090.7 26+ 0.8 US 1
138BA cL T$from |b|g(t) in 1971Ca21
138BA B 14.4 25 6.73 8
138BAS B EAV=1401.4 42
138BA G 191.7 2 80 4 E2 0.199
138BAS G KC=0.1531 22$LC=0.0361 6$MC=0.00773 12
138BAS G NC=0.001623 24$OC=0.000226 4$PC=8.05E-6 12
138BA L 2203.2 3 6+
138BA B 2.0 5 7.5 1
138BAS B EAV=1349.1 42
138BA G 112.5 3 8 1M1+E2 -0.25 2 0.739 13
138BAS G KC=0.618 11$LC=0.096 3$MC=0.0200 6
138BAS G NC=0.00428 13$OC=0.000638 17$PC=3.98E-5 7
138BA L 2307.8 3 4+
138BA G 408.8 2 M1+E2 -0.23 +7-10 0.0216 4
138BAS G KC=0.0186 4$LC=0.00243 4$MC=0.000500 7
138BAS G NC=0.0001078 16$OC=1.650E-5 24$PC=1.202E-6 25
138BA G 871.8 3 E2 0.00245
138BAS G KC=0.00210 3$LC=0.000281 4$MC=5.79E-5 9
138BAS G NC=1.243E-5 18$OC=1.88E-6 3$PC=1.298E-7 19
138BA L 2415.2 35+
138BA B 2.8 6 7.3 1
138BAS B EAV=1250.7 42
138BA G 107.5 3 1.0 5[M1] 0.803 13
138BAS G KC=0.687 11$LC=0.0922 15$MC=0.0190 3
138BAS G NC=0.00411 7$OC=0.000628 11$PC=4.53E-5 8
138BA G 212.0 3 2.8 5(M1) 0.1221
138BAS G KC=0.1047 16$LC=0.01384 21$MC=0.00285 5
138BAS G NC=0.000616 9$OC=9.43E-5 14$PC=6.87E-6 10
138BA G 324.5 3 6.2 10M1+E2 -7.8 +17-260.0353
138BAS G KC=0.0290 5$LC=0.00505 8$MC=0.001063 16
138BAS G NC=0.000226 4$OC=3.26E-5 5$PC=1.666E-6 25
138BA G 516.2 5 3.2 10M1+E2 -0.11 4 0.0121218
138BAS G KC=0.01043 15$LC=0.001343 20$MC=0.000276 4
138BAS G NC=5.96E-5 9$OC=9.14E-6 14$PC=6.75E-7 10