196PB 196BI EC DECAY (240 S) 1987VA09,1984VA11,1976CH3007NDS 200706
196PB H TYP=FUL$AUT=Huang Xiaolong$CIT=NDS 108, 1093 (2007)$CUT=1-Jan-2006$
196PB D $UPDATE ON DECAY FROM HIGH SPIN STATE.
196PB c $1987Va09 present a composite decay scheme for the 308-s and 240-s
196PB2c isomers. The evaluators have attempted to separate the decay schemes
196PB3c on the basis of intensity balance and assuming that the two isomers
196PB4c populate levels with different range of spins. The 308-s isomer
196PB5c populating the low spin levels (J|<4), and 240-s isomer populating
196PB6c the high-spin levels (J|>7). The low-lying levels, however, will be
196PB7c seen in the decay of all activities.
196PB c $Because of some unplaced |g rays the decay scheme is incomplete.
196PB c $1987Va09: sources produced in reaction {+16}O on nat Re, E({+16}O)<210
196PB2c MeV. Mass separation. Measured E|g, I|g, x-rays (Ge detectors, FWHM=2.0
196PB3c keV at 1332 keV, FWHM=580 eV at 122 keV), E(ce), Ice (Si(Li), FWHM=2.5
196PB4c keV at 624 keV), |g|g coin, ce|g coin, triparameter coin.
196PB c $1976Ch30: prepared by {+185}Re({+16}O,5n) and {+187}Re({+16}O,7n),
196PB2c E({+16}O)<210 MeV; and {+181}Ta({+22}Ne,7n), E({+22}Ne)=150 MeV.
196PB c $Others: 1971ChYB, 1971BrZC, 1973KhZY.
196PB cL E$From a least-squares fit to |g-ray
196PB2cL energies of 1987Va09.
196PB cL J$From {+196}Pb adopted levels, except as noted.
196PB cL T$From 1961Sv01, 1957An53
196PB cG M$From {+196}Pb adopted gammas,except as noted.
196PB cG E$From 1987Va09.
196PB2cG See {+196}Bi |e decay (308 s) for unplaced |g's.
196PB cG RI$Intensities are relative to 100 for 1049.4|g with {+196}Bi |e
196PB2cG decay (high-spin + low-spin).
196BI P 271 5 (10-) 240 S 3 7352 28
196BI cP T$From mean half-life of 372|g, 338|g and 138|g (1987Va09).
196BI cP E${+196}Bi adopted levels.
196PB N 2.16 9 2.16 9 0.742 251.347708
196PB cN NR$calculated from |SI(|g+ce)=100% to g.s., assuming no
196PB2cN (|e+|b{++})-feeding to the {+196}Pb g.s.
196PB PN 1 3
196PB L 0.0 0+ 37 M 3
196PB L 1049.23 172+
196PB G 1049.4 2 45.7 18E2 0.00608 C
196PBS G KC=0.00486 7$LC=0.000927 13$MC=0.000220 3$NC+=6.78E-5 10
196PB3 G ELC=0.00093 9 $ EMC=0.0004 1 $
196PB cG RI$|DI{-|g} from 665.4|g of 3042 level (evaluators).
196PB L 1142.87 230+
196PB cL J$1143|g is E0; T, coincidence with Pb K| x ray
196PB2cL and absence of coincidence with 1049|g.
196PB G 1142.7 3 E0 0.044 11
196PB cG M$from comparison of |g and ce- spectrum.
196PB cG E$1143.4 {I2} keV from 1984Va11.
196PB L 1449.93 182+
196PB cL J$1450|g to g.s. is E2.
196PB G 306.9 3 0.04 1 E2 0.1081 @C
196PBS G KC=0.0617 9$LC=0.0348 5$MC=0.00892 13$NC+=0.00270 4
196PB3 G EKC=0.18 3 $ ELC=0.020 3 $
196PB cG $B(E2; 307|g)/B(E2; 1450|g)=377 (1984Va11).
196PB cG M$this transition has a doublet structure.
196PB G 400.9 2 0.3 1 E0+M1+E2 0.12 8 C
196PBB G EKC=0.29 2 $ ELC=0.068 9 $ EMC=0.012 3 $
196PB cG $The conversion coefficient of the 401|g shows the
196PB2cG presence of a strong E0 component.
196PBS G KC=0.10 7$LC=0.020 7$MC=0.0049 15$NC+=0.0015 5
196PB G 1449.7 3 0.3 1 E2 0.00335 C
196PBS G KC=0.00269 4$LC=0.000464 7$MC=0.0001089 16$NC+=8.26E-5 12
196PB3 G EKC=0.0026 4 $
196PB L 1738.62214+
196PB cL $Placed in {+196}Bi low spin |e decay also. I|g deduced from
196PB2cL intensity balance and branching ratios at 1739-keV level.
196PB G 288.7 2 0.6 2 E2 0.1298 C
196PBS G KC=0.0712 10$LC=0.0439 7$MC=0.01130 17$NC+=0.00341 5
196PB G 689.3 2 41.5 13E2 0.01422
196PBS G KC=0.01081 16$LC=0.00259 4$MC=0.000629 9$NC+=0.000193 3
196PB3 G ELC=0.0026 4 $ EMC=0.0009 2 $
196PB L 1797.96 245-
196PB G 59.2 3 31 3 E1 0.376 8
196PBS G LC=0.287 6$MC=0.0683 14$NC+=0.0202 4
196PB G 748.8 2 3.3 4 E3 0.0312
196PB cG $|a(K)=0.0208, |a(L)=0.00754
196PB3 G EKC=0.024 3 $
196PB cG CC$E3 |a(theory)'s mult. By 0.975 {I10} (Cf. 1990Ne01)
196PBS G KC=0.0211 3$LC=0.00762 11$MC=0.00192 3$NC+=0.000589 9
196PB L 2170.2 37-
196PB E 5.4 15 5.6 15 6.65 12 11 3
196PBS E EAV=2000 13$CK=0.408 4$CL=0.0728 7$CM+=0.02367 22
196PB G 372.2 2 43.3 10E2 0.0626 C
196PBS G KC=0.0396 6$LC=0.01724 25$MC=0.00437 7$NC+=0.001325 19
196PB3 G ELC=0.017 2 $EMC=0.0058 9 $
196PB cG RI$From intensity balance at 1797.9 level.
196PB L 2308.6 49-
196PB E 6.9 10 7.8 12 6.48 7 14.7 22
196PBS E EAV=1937 13$CK=0.426 4$CL=0.0761 7$CM+=0.02474 23
196PB G 138.4 2 10.1 4 E2 1.67 C
196PBS G KC=0.366 6$LC=0.971 15$MC=0.256 4$NC+=0.0766 12
196PB3 G ELC=1.2 1 $ EMC=0.28 3 $
196PB cG RI$imbalance with 337.5|g 15.2 and 283.2|g 1.5
196PB L 2334.7 48-
196PB cL J$from systematics of the 8- state in {+192}Pb, {+194}Pb and
196PB2cL 165|g to 7- (1987Va09).
196PB cL $From high spin |e-decay, |g to high spin.
196PB E 3.2 6 3.7 6 6.80 8 6.9 12
196PBS E EAV=1925 13$CK=0.430 4$CL=0.0767 7$CM+=0.02495 23
196PB G 164.5 2 1.3 2 M1 2.29
196PBS G KC=1.87 3$LC=0.322 5$MC=0.0754 11$NC+=0.0234 4
196PB L 2591.8 48-
196PB cL J$422|g to 7- is E1, 283|g to 9-.
196PB E 4.8 6 6.6 8 6.51 5 11.4 13
196PBS E EAV=1807 13$CK=0.465 4$CL=0.0832 8$CM+=0.02703 24
196PB cE LOGFT$log| {If{+1u}t}=7.6 {I4}
196PB G 283.2 2 1.5 2 M1 0.503 C
196PBS G KC=0.412 6$LC=0.0703 10$MC=0.01647 24$NC+=0.00511 8
196PB G 421.7 2 7.7 4 E2 0.0449 C
196PBS G KC=0.0300 5$LC=0.01124 16$MC=0.00283 4$NC+=0.000859 13
196PBB G EKC=0.019 9 $
196PB L 2646.1 410+
196PB E 10.2 6 14.4 9 6.16 3 24.6 15
196PBS E EAV=1783 13$CK=0.473 4$CL=0.0845 8$CM+=0.02749 24
196PB G 337.5 2 15.2 4 E1 0.0225
196PBS G KC=0.0185 3$LC=0.00309 5$MC=0.000721 11$NC+=0.000220 4
196PB3 G ELC=0.004 1 $
196PB L 3088.1 4 9-,(10-)
196PB cL J$(9,10)- from 496|g M1+(E2) to 8-.
196PB E 1.4 3 2.8 5 6.79 9 4.2 8
196PBS E EAV=1582 13$CK=0.537 5$CL=0.0963 8$CM+=0.0313 3
196PB G 496.3 2 2.8 4 M1+(E2) 0.89 0.0752
196PBS G KC=0.0601 9$LC=0.01150 17$MC=0.00273 4$NC+=0.000844 12
196PB cG $|a(K)exp=0.062 {I9},|a(L)exp=0.018 {I4}
196PB cG M$From |a(K)exp
196PB cG MR$from |a(K)exp and |a(L)exp.
196PB3 G EKC=0.062 9 $ ELC=0.018 4 $
196PB cG CC$|a(K)exp+|a(L)exp=0.080 {I10}
196PB L 3395.1 410-
196PB E 0.36 11 0.9 3 7.20 14 1.3 4
196PBS E EAV=1444 13$CK=0.582 5$CL=0.1046 8$CM+=0.0341 3
196PB G 306.9 3 0.3 1 M1 0.404 @
196PBB G EKC=0.18 3 $ ELC=0.020 3 $
196PB cG CC$|a=0.4176 for M1, |a=0.1093 for E2.
196PBS G KC=0.330 5$LC=0.0564 8$MC=0.01320 19$NC+=0.00410 6
196PB G 749.0 2 0.4 LT
196PB G 803.1 5 0.2 1 E2 0.01033
196PBS G KC=0.00804 12$LC=0.001745 25$MC=0.000420 6$NC+=0.0001290 19