206PB 210PO A DECAY 1964EiZZ,1973Go39 25NDS 202503
206PB H TYP=FUL$AUT=F.G. KONDEV$CIT=NDS 201, 346 (2025)$CUT=21-Jan-2025$
206PB c 1964EiZZ: Resistance-bridge type calorimeter. Three series of
206PB2c measurements 1954-1958 (47 observations), 1963-1964 (78 observations)
206PB3c and 1964 (19 observations) were carried out
206PB c 1973Go39: magnetic spectrograph at BIPM; chemically purified {+210}Po
206PB2c source; absolute E|a measurement
206PB c Others: 1933Ro03, 1934Le01, 1951Gr15, 1951St75, 1952Ba20, 1952De08,
206PB2c 1952Ri14, 1952Ru08, 1953Co64, 1953Cu46, 1954Br07, 1955Ha09, 1955Ro30,
206PB3c 1956As46, 1956Sh24, 1957Ag15, 1957Ov09, 1957Ov10, 1958Ba45, 1958Wh09,
206PB4c 1960Br20, 1960Fe04, 1961Be13, 1961Ry05, 1962Br22, 1963Ru04, 1964Wa19,
206PB5c 1973Go39, 1974Br22, 1975Fi09, 1975Ra10, 1975Ra11, 1977Sc07, 1978Ov03,
206PB6c 1991Ry01, 1999Oh02, 2015Zh41, 2018Sh12, 2023Av04
206PB cA HF$r{-0}({+206}Hg)=1.40879 {I4} is calculated from HF(5304.33|a)=1.0.
206PB cL E,J,T$From adopted levels.
206PB cG E,M$From adopted gammas
206PB cG $X rays are produced primarily by shake-off of electrons
206PB2cG during the passage of |a particles through the atom. The measured
206PB3cG I(K| x ray)/I|a values are 2.28|*10{+-6} {I20} (1999Oh02),
206PB4cG 1.65|*10{+-6} {I17} (1975Ra10), 1.97|*10{+-6} {I13} (1975Fl09),
206PB5cG 1.5|*10{+-6} {I5} (1951Gr15), 2.0|*10{+-6} {I4} (1952Ba20),
206PB6cG 1.6|*10{+-6} {I5} (1952Ri14), 1.5|*10{+-6} {I3} (1957Ov10), and
206PB7cG 2.0|*10{+-6} {I5} (1974Br22); For I(L| x ray)/I|a see 1952Ri14,
206PBxcG 1952Ru08, 1974Br22, 1975Fi09, 1975Ra11, and 1977Sc07. For I(M x
206PBxcG ray)/I|a see 1963Ru04.
206PB N 1.0 1.0
206PB PN 3
210PO P 0.0 0+ 138.3763 D25 5407.53 7
210PO cP T$Weighted average of 138.3749 d {I6}, 138.3832 d {I11} and 138.3726 d
210PO2cP {I6} in 1964EiZZ [calorimetry], supersedes 138.4005 d {I58} (1954Ei20).
210PO3cP Others: 138.37 d {I3} (1953Cu46) and 138.40 d {I21}
210PO4cP (2015Zh41, 700 d long measurement) [|a counting]
210PO cP QP$From 2021Wa16
206PB L 0.0 0+ STABLE
206PB A 5304.33 7 100 1.000
206PB cA E$From the evaluation of 1991Ry01, based on 1973Go39 results.
206PB2cA Others: 5298 keV {I6} (1933Ro03), 5298.8 keV {I21} (1934Le01),
206PB3cA 5300.6 keV {I26} (1954Br07), 5304.3 keV {I29} (1953Co64), 5297.8 keV
206PB4cA {I15} (1957Ag15), 5305.4 keV {I10} (1958Wh09), 5308.6 keV {I30}
206PB5cA (1960Br20), 5302.5 keV {I15} (1961Be13), and 5304.9 keV {I6} (1961Ry05)
206PB L 803.043 25 2+ 8.17 PS 8
206PB A 4516.58 100.00123321 1.232 21
206PB cA E$From Q(|a) and E(level). Measured: 4525 keV {I5} (1960Fe04).
206PB cA IA$From I|g(803.04|g) and |a(tot). Directly measured
206PB2cA I|a(4516.58|a)/I|a(5304.33|a)=1.070|*10{+-5} {I21} (1958Ba45) and
206PB3cA 8.83|*10{+-6} {I47} (1999Oh02).
206PB G 803.04 3 0.00122022E2 0.0103214
206PBS G KC=0.00804 12$LC=0.001745 25$MC=0.000420 6$NC+=0.0001290 18
206PBS G NC=0.0001065 15$OC=2.06E-5 3$PC=1.89E-6 3
206PB cG RI$Weighted average of 0.00121 {I6} (1955Ha09), 0.0012 {I1} (1955Ro30),
206PB2cG 0.00121 {I8} (1956As46), 0.00122 {I9} (1957Ov09), 0.00132 {I8}
206PB3cG (1957Ov09), 0.00115 {I9} (2018Sh12) and 0.00122 {I3} (2023Av04).
206PB4cG Others: 0.00180 {I14} (1951Gr15), 0.0016 {I2} (1952Ri14), and
206PB5cG 0.0012 {I2} (1956Sh24). Indirect measurements: 0.001059 {I21} and
206PB6cG 0.000874 {I47} from I|a(4516.58|a) and |a(tot) in 1958Ba45 and
206PB7cG 1999Oh02, respectively
206PB cG M$|a(K)exp=0.0081 {I14} (1999Oh02)
206PB L 1166.4 3 0+ 0.75 NS 4
206PB A 4441.1 5 6E-7 LT 5.9 GT
206PB cA E$From Q(|a) and E(level)
206PB cA IA$From non-observation of ce in 1978Ov03