212PO 212BI B- DECAY (60.55 M) 1973DA38,1984GE07 20NDS 202009
212PO H TYP=FUL$AUT=K. Auranen and E.A. McCutchan$CIT=NDS 168, 117 (2020)$
212PO2 H CUT=1-Aug-2020$
212PO cB $F-K analysis of 1957Bu34 shows an additional |b{+-} group with
212PO2cB E|b(endpoint)=0.08 MeV, I|b=5% of |b{+-} decay.
212PO cB IB$The intensities of the |b groups have been deduced from the
212PO2cB absolute I|g and the I(|g+ce) balance at each level. The intensities
212PO3cB of |b{+-} delayed |a's from the excited levels, other than from the
212PO4cB 1801 level, are insignificant. In the case of the 1801 level an |a
212PO5cB group with intensity I|a=0.008% {I8} has been considered in I|b
212PO6cB calculation.
212PO cG $The conversion coefficients based on the Ice of 1963Da11 and
212PO2cG 1957Vo22 have been deduced by the evaluator using the adopted I|g and
212PO3cG the E2 multipolarity of the 727.330|g (|a(K)=0.0106 for 1963Da11, and
212PO4cG |a(L)=0.0026 for 1957Vo22).
212PO cG E$From 1973Da38, unless otherwise noted
212PO cG RI$From 1984Ge07 (normalized to I|g per 100 {+212}Bi |b{+-} decays),
212PO2cG unless otherwise noted.
212PO cG $Peaks at E|g|?1300 and E|g=2200 were reported
212PO2cG in early studies (1947Jo05, 1947La24, 1958Ch43). These were not found
212PO3cG by 1960Em01 (E|g=1.34 MeV, I|g|<0.3; E|g=2.20 MeV, I|g|<1.9) and
212PO4cG 1960Gi07 (E|g=1.3 MeV, I|g<0.2; E|g=2.2 MeV, I|g<0.06), nor reported
212PO5cG by later references.
212PO cG MR$From |g|g(|q) of 1982Be09, unless otherwise noted
212PO cG E(A)$From 1979He10
212PO cG E(B)$From 1969Br24
212PO cG E(F)$From 1957Vo22
212PO cG E(G)$From 1982Be09
212PO cG RI(D)$From 1973Da38
212PO c $({+212}Bi |b{+-})({+212}Po |a): 1957Bu34
212PO c $({+212}Bi |b{+-})({+212}Po |a)(t): 1982Be09. The authors measured
212PO2c (100|800)(727.330|g)(|q) isotropic (1969Sc06)
212PO cB IB$other: I|b=8.5% of |b{+-} decay from F-K analysis (1957Bu34)
212PO L 1512.70 8 2+
212PO cL J$(785.37|g)(727.330|g)(|q) shows 2(D+Q)2(Q)0 sequence
212PO2cL (1982Be09,1961Gi05)
212PO G 785.37 8 1.72 2 M1+E2 +0.09 3 0.0387 C
212POF G FLAG=B
212POS G KC=0.0316 5$LC=0.00539 8$MC=0.001266 19$NC=0.000326 5$OC=6.82E-5 10$
212POS G PC=8.84E-6 13
212PO cG RI$Weighted average of 1.05 {I5} (1992Li05), 1.102 {I13} (1984Ge07),
212PO2cG 1.07 {I5} (1983Sc13): I|g(785|g)=1.100 {I12}/0.6406=1.72 {I2}.
212PO cG M$D+Q from |g|g(|q) (1982Be09,1961Gi05); M1+E2 from |a(K)exp=0.033
212PO2cG {I5} (1978Av01). Others: 1963Da11, 1957Vo22
212PO cG MR$other: 0.04 {I3} (1961Gi05)
212PO cG $(727.3|g)(785.4|g)(|q): A{-2}=0.313 {I18}, A{-4}=0.017 {I26}
212PO2cG (1982Be09)
212PO G 1512.7 3 0.45 6 [E2] 0.00344
212POF G FLAG=D
212POS G KC=0.00274 4$LC=0.000483 7$MC=0.0001139 16$NC=2.93E-5 4$OC=6.07E-6 9$
212POS G PC=7.66E-7 11
212PO cG M$|a(K)exp=0.02 (1957Vo22), in disagreement with this multipolarity.
212PO B 1.44 4 7.093 13
212POS B EAV=230.63 61
212PO cB IB$other: I|b=5.5% of |b{+-} decay for E|b(endpoint)=0.93 MeV
212PO2cB from F-K analysis (1957Bu34)
212PO L 1620.738 10 1+
212PO cL J$(893.408|g)(727.330|g)(|q) shows 1(D+Q)2(Q)0 sequence (1982Be09)
212PO G 893.408 5 0.59 3 M1+E2 -0.031 34 0.0278 C
212POF G FLAG=A
212POS G KC=0.0228 4$LC=0.00386 6$MC=0.000907 13$NC=0.000233 4$OC=4.89E-5 7$
212POS G PC=6.33E-6 9
212PO cG M$D+Q from |g|g(|q) (1982Be09); M1+E2 from |a(K)exp=0.025
212PO2cG (1963Da11,1957Vo22).
212PO cG $(727.3|g)(893.4|g)(|q): A{-2}=-0.284 {I37}, A{-4}=-0.042 {I52}
212PO2cG (1982Be09)
212PO G 1620.50 10 2.29 5 (M1) 0.00620
212POF G FLAG=B
212POS G KC=0.00494 7$LC=0.000824 12$MC=0.000193 3$NC=4.97E-5 7$OC=1.041E-5 15$
212POS G PC=1.353E-6 19
212PO cG RI$Weighted average of 1.44 {I9} (1992Li05), 1.49 {I3} (1984Ge07),
212PO2cG 1.38 {I8} (1983Sc13): I|g(1620.5|g)=1.47 {I3}/0.6406=2.29 {I5}.
212PO cG M$|a(K)exp=0.0050 (1963Da11), 0.0062 (1957Vo22).
212PO B 1.86 4 6.748 11
212POS B EAV=192.44 60
212PO cB IB$other: I|b=6% of |b{+-} decay for E|b(endpoint)=0.67 MeV from
212PO2cB F-K analysis (1957Bu34)
212PO L 1679.450 14 2+
212PO cL J$(952.120|g)(727.330|g)(|q) shows 2(D+Q)2(Q)0 sequence (1982Be09)
212PO G 952.120 11 0.26 5 M1+E2 +0.65 50 0.019 5
212POF G FLAG=DA
212POS G KC=0.015 4$LC=0.0027 6$MC=0.00063 13$NC=0.00016 4$OC=3.4E-5 7$
212POS G PC=4.4E-6 10
212PO cG M$D+Q from |g|g(|q) (1982Be09); (M1+E2) from |a(K)exp=0.039 (1957Vo22)
212PO cG $(727.3|g)(952.1|g)(|q): A{-2}=0.474 {I59}, A{-4}=0.097 {I82}
212PO2cG (1982Be09)
212PO G 1679.7 5 0.09 2 [E2] 0.00291
212POF G FLAG=D
212POS G KC=0.00227 4$LC=0.000391 6$MC=9.19E-5 13$NC=2.36E-5 4$OC=4.91E-6 7$
212POS G PC=6.23E-7 9
212PO B 0.23 3 7.51 6
212POS B EAV=172.18 59
212PO L 1800.9 2 0+ H
212PO G 180.2 0.005 2 [M1] 2.08
212POF G FLAG=G
212POS G KC=1.692 24$LC=0.298 5$MC=0.0704 10$NC=0.0181 3$OC=0.00379 6$
212POS G PC=0.000490 7
212PO cG E$other: E|g=190, I|g=0.3 (1960Gi07)
212PO cG RI$measured relative to I|g(176.68 {+212}Pb |b{+-} decay) (1982Be09)
212PO G 1073.6 2 0.025 3 [E2] 0.00642
212POF G FLAG=G
212POS G KC=0.00510 8$LC=0.001002 14$MC=0.000240 4$NC=6.16E-5 9$OC=1.269E-5 18$
212POS G PC=1.557E-6 22
212PO cG RI$I|g(1078.62)/I|g(1073.6)=35.7 {I35} (1982Be09)
212PO cG M$measured Ice (|a(K)exp|<0.2 (1963Da11), |a(K)exp=0.2 (1957Vo22))
212PO2cG are in disagreement with this assignment.
212PO G 1800.2 E0 0.0064 6
212POF G FLAG=F
212PO cG M$no photon observed
212PO cG TI$Ice(K) measured relative to Ice(K)(2614.5|g {+208}Pb), corrected
212PO2cG for Ice(K)(1806|g), Ice(L+M+)(1800.2|g), pair production (1982Be09).
212PO B 0.030 6 8.05 9
212POS B EAV=131.53 56
212PO L 1805.96 10 2+ H
212PO cL J$(1078.62|g)(727.330|g)(|q) shows 2(D+Q)2(Q)0 sequence (1982Be09).
212PO G 1078.62 10 0.88 3 M1+E2 -0.135 35 0.01693
212POF G FLAG=B
212POS G KC=0.01386 22$LC=0.00234 4$MC=0.000549 9$NC=0.0001413 22$OC=2.96E-5 5$
212POS G PC=3.84E-6 6
212PO cG RI$Weighted average of 0.555 {I41} (1992Li05), 0.563 {I19}
212PO2cG (1984Ge07), 0.58 {I4} (1983Sc13): I|g(1078.6|g)=0.564
212PO3cG {I16}/0.6406=0.88 {I3}.
212PO cG M$D+Q from |g|g(|q) (1982Be09); (M1+E2) from |a(K)exp=0.014
212PO2cG (1963Da11,1957Vo22)
212PO cG $(727.3|g)(1078.6|g)(|q): A{-2}=0.147 {I27}, A{-4}=-0.003 {I39}
212PO2cG (1982Be09)
212PO G 1806.0 5 0.14 3 [E2] 0.00261
212POF G FLAG=D
212POS G KC=0.00200 3$LC=0.000338 5$MC=7.94E-5 12$NC=2.04E-5 3$OC=4.24E-6 6$
212POS G PC=5.40E-7 8
212PO cG M$(Ice(K)=0.003 {I1} (1963Da11))/(I|g=0.14 {I3}) gives |a(K)exp=0.02
212PO2cG {I1}, not in agreement with E2 assignment.
212PO B 0.66 3 6.695 21
212POS B EAV=129.88 56
212PO cB IB$other: I|b=9% of |b{+-} decay for E|b(endpoint)=0.45 MeV
212PO2cB from F-K analysis (1957Bu34)