206TL 210BI A DECAY (3.04E+6 Y) 1975TUZW,1976TUZY,1969LA1825NDS 202503
206TL H TYP=FUL$AUT=F.G. KONDEV$CIT=NDS 201, 346 (2025)$CUT=21-Jan-2025$
206TL c 1975TuZW,1976TuZY: {+210}Bi isomer produced by {+209}Bi(n,|g) reaction
206TL2c with chemical and isotope separations. Half-life measurement included
206TL3c isotopic assay and grid chamber. Measured: |a, |g and ce singles,
206TL4c and |g|g and |a-|g coincidences with Si and Ge detectors.
206TL c 1969La18: {+210}Bi isomer produced by {+209}Bi(n,|g) reaction
206TL2c with, and without, isotope separation and by chemical extraction of
206TL3c {+210}Pb from the source. Measured: |g singles and |g|g
206TL4c coincidences with Ge, Si(Li), and NaI detectors, and |a singles
206TL5c and |a-|g coincidences with Ge and Si surface-barrier detectors
206TL c Others:
206TL c 1961Ru02: {+210}Bi isomer produced by {+209}Bi(n,|g) reaction with
206TL2c chemical and isotope separation. Measured |a's with ionization chamber
206TL3c with resolving power of 28 keV, |g with NaI, ce with magnetic
206TL4c spectrometer, lifetimes from |g-|a coincidences with plastic
206TL5c detectors, and ce-|a coincidences in the magnetic spectrometer.
206TL6c Early work by the same authors: 1958Go89 and 1959Go77
206TL c 1962Ko12: measured E(|a) and I(|a) with ionization chamber using
206TL2c E|a({+234}U)=4768 keV as a reference.
206TL c 1967Sp07: source from 1954Le60. |g's measured using Ge detector.
206TL c Others: 1953Hu42, 1954Le60, 1960Wa14, 1969LaZY, 1970La23
206TL cL E$From a least-squares fit to E|g
206TL cL J,T$From adopted levels
206TL cA HF$r{-0}({+206}Tl)=1.46 {I3}, unweighted average of 1.449 {I21}
206TL2cA ({+206}Hg), 1.408790 {I38} ({+206}Pb) and 1.52177 {I18} ({+208}Pb)
206TLxcA (2020Si16)
206TL cA E$From singles measurements in 1976TuZY, unless otherwise stated.
206TL cA E(b)$From |a-|g coincidences in 1976TuZY
206TL cG E,RI$From 1976TuZY, unless otherwise stated. Uncertainty of 0.5 keV was
206TL2cG assigned to the strong and well resolved |g rays and of 1 keV to the
206TL3cG weak ones by the evaluator. Others: 1967Sp07, 1961Ru02, 1969La18
206TL cG M$From |a(K)exp and |a(L)exp in 1961Ru02 and 1976TuZY.
206TL DG CC$FROM BrIcc v2.3e (17-Jun-2020) 2008Ki07, "Frozen Orbitals" appr.
206TL N 0.52 4 1.00
206TL PN 4
206TL cN NR$Unweighted average of 0.481 {I18}, using I(4946|a)=54.8% {I20} and
206TL2cN I[265.6(ce+|g)] - I(ce+|g)[feeding the 265.6-keV level] and 0.56 {I4},
206TL3cN using I(4909|a)=40% {I2} and I[304.9(ce+|g)] -
206TL2cN I(ce+|g)[feeding the 304.9-keV level]
210BI P 271.31 11 9- 3.04E+6 Y 6 5036.5 8
210BI cP E,J,T$From 2014Ba41
210BI cP QP$From 2021Wa16
206TL L 0.0 0- 4.202 M 14
206TL A 5206.5 8 0.0001 LT S
206TL cA E$Not observed in 1976TuZY. E|a is from Q(|a) in 2021Wa16
206TL cA IA$Others: |?0.04 in 1969La18 and 1970La23.
206TL L 265.6 4 2- 2.29 NS 14
206TL cL T$Other: 1.25 ns {I20} from |a-|g(t) in 1961Ru02.
206TL A 4946 1 54.8 201.48E+0616
206TL cA E$Others: 4935 keV {I5} (1969La18), 4953 keV {I5} (1962Ko12), and
206TL2cA 4930 keV {I10} (1961Ru02)
206TL cA IA$Unweighted average 55.0% (1976TuZY) and 54.6% {I11} (1969La18).
206TL2cA |DI|a is a conservative estimate by the evaluator. Others: 57.6% {I10}
206TL3cA (1962Ko12) and 60% (1961Ru02)
206TL G 265.6 5 100 E2 0.1607 24
206TL2 G %IG=52 4
206TLS G KC=0.0857 13$LC=0.0563 9$MC=0.01445 23
206TLS G NC=0.00362 6$OC=0.000641 10$PC=3.10E-5 5
206TL cG E,RI$ Others: E|g=267.7 keV {I2}, I|g=100 (1967Sp07) and
206TL2cG E|g=266 keV, I|g=100 (1969La18)
206TL cG M$|a(K)exp=0.092, |a(L)exp=0.057 and |a(M)exp=0.013 (1976TuZY);
206TL2cG |a(K)exp=0.15 {I6} and K/L=1.5 {I3} (1961Ru02)
206TL L 304.9 4 1- 4.2 PS 14
206TL cL T$Other: 3.2 ns {I3} from |a-|g(t) in 1961Ru02, but this value is most
206TL2cL likely associated with the 265.6 keV level (1984Bh06).
206TL A 4909 1 40 2 1.19E+0614
206TL cA E$Others: 4896 keV {I5} (1969La18), 4916 keV {I5} (1962Ko12), and
206TL2cA 4890 keV {I10} (1961Ru02)
206TL cA IA$Unweighted average 39.5% (1976TuZY) and 40.4% {I10} (1969La18).
206TL2cA |DI|a is a conservative estimate by the evaluator.
206TL3cA Others: 36% {I1} (1962Ko12) and 34% (1961Ru02)
206TL G 304.6 5 54.5 27 M1 0.376 6
206TL2 G %IG=28.3 26
206TL cG E$Others: E|g=304.8 keV {I3} (1967Sp07) and 305 keV (1969La18)
206TL cG RI$Unweighted average I|g=55.4 (1976TuZY), 54 (1967Sp07) and
206TL2cG 54 (1969La18). A conservative |DI|g=5% was estimated by the evaluator
206TLS G KC=0.308 5$LC=0.0520 8$MC=0.01214 18
206TLS G NC=0.00306 5$OC=0.000595 9$PC=5.63E-5 8
206TL cG M$|a(K)exp=0.37, |a(L)exp=0.060 and |a(M)exp=0.017 (1976TuZY);
206TL2cG |a(K)exp=0.26 {I1} and K/L=6.3 {I1} (1961Ru02)
206TL L 634.6 5 2- 4.0 PS 9
206TL A 4582 2 1.35 1 3.16E+0532
206TL cA IA$Determined by the evaluator from I(4582|a+4568|a)=5.1% (singles)
206TL2cA in 1976TuZY and I(4568|a)=3.75% {I1} in the present work
206TL G 329.6 5 1.5 3 M1 0.304 4
206TL2 G %IG=0.78 17
206TL cG E$Others: E|g=329.1 keV {I8} (1967Sp07) and 329 keV (1969La18)
206TL cG RI$Unweighted average I|g=1.46 (1976TuZY), 1.1 (1969La18) and
206TL2cG |?2 (1967Sp07)
206TLS G KC=0.249 4$LC=0.0419 6$MC=0.00978 14
206TLS G NC=0.00247 4$OC=0.000480 7$PC=4.54E-5 7
206TL cG M$|a(K)exp=0.29 and |a(L)exp=0.074 (1976TuZY)
206TL G 368.9 5 1.2 1 M1 0.2239 32
206TL2 G %IG=0.62 7
206TL cG E$Others: E|g=369.6 keV {I10} (1967Sp07) and 368 keV (1969La18)
206TL cG RI$Unweighted average I|g=1.25 (1976TuZY), 1.3 (1969La18) and
206TL2cG |?1 (1967Sp07)
206TLS G KC=0.1837 27$LC=0.0308 4$MC=0.00719 10
206TLS G NC=0.001816 26$OC=0.000353 5$PC=3.34E-5 5
206TL cG M$|a(K)exp=0.18 and |a(L)exp=0.038 (1976TuZY)
206TL G 635 0.02 [E2] 0.0162123
206TL2 G %IG=0.0104 8
206TL cG E$From a |g-ray spectrum collected with isotopically separated
206TL2cG source (1976TuZY)
206TL cG E$Other: 634 keV (1969La18)
206TL cG RI$Other: 0.02 (1969La18)
206TLS G KC=0.01224 17$LC=0.00301 4$MC=0.000733 10
206TLS G NC=0.0001844 26$OC=3.43E-5 5$PC=2.56E-6 4
206TL L 649.4 4 1-
206TL A 4568 2 3.75 1 9.1E+04 10
206TL cA E$Others: 4568 keV {I5} (1969La18), 4568 keV {I5} (1962Ko12), and
206TL2cA 4590 keV {I10} (1961Ru02)
206TL cA IA$Unweighted average of 3.75%, determined by the evaluator from
206TL2cA I(4582|a+4568|a)=5.1% (singles) and I(4582|a)/I(4568|a)=1.4/3.9
206TL3cA (|a-|g coincidence) in 1976TuZY, and 3.74% {I12} (1969La18).
206TL G 344.3 5 1.6 2 M1 0.270 4
206TL2 G %IG=0.83 12
206TL cG E$Others: E|g=344.0 keV {I10} (1967Sp07) and 344 keV (1969La18)
206TL cG RI$Unweighted average I|g=1.40 (1976TuZY), 1.4 (1969La18) and
206TL2cG |?2 (1967Sp07)
206TLS G KC=0.2212 32$LC=0.0372 5$MC=0.00868 13
206TLS G NC=0.002191 32$OC=0.000426 6$PC=4.03E-5 6
206TL cG M$|a(K)exp=0.15 and |a(L)exp=0.033 (1976TuZY)
206TL G 384 0.011 [M1] 0.2010 28
206TL2 G %IG=0.0057 4
206TLS G KC=0.1649 23$LC=0.0277 4$MC=0.00645 9
206TLS G NC=0.001628 23$OC=0.000316 4$PC=3.00E-5 4
206TL cG E,RI$From a |g-ray spectrum collected with isotopically separated
206TL2cG source (1976TuZY)
206TL G 649.6 5 5.8 11 M1 0.0501 7
206TL2 G %IG=3.0 6
206TLS G KC=0.0412 6$LC=0.00680 10$MC=0.001584 22
206TLS G NC=0.000400 6$OC=7.77E-5 11$PC=7.38E-6 10
206TL cG E$Others: E|g=649.8 keV {I10} (1967Sp07) and 651 keV (1969La18)
206TL cG RI$Unweighted average I|g=7.7 (1976TuZY), 5.6 (1969La18) and
206TL2cG |?4 (1967Sp07)
206TL cG M$|a(K)exp=0.029 (1976TuZY)
206TL L 801.1 7 3- 2.4 PS 7
206TL A 4420 1 0.20 1 1.61E+0519
206TL cA E$Others: 4400 keV {I5} (1969La18), 4423 keV {I5} (1962Ko12), and
206TL2cA 4480 keV {I10} (1961Ru02)
206TL cA IA$Unweighted average 0.21% (1976TuZY) and 0.19% {I1} (1969La18).
206TL G 535.5 5 0.51 [M1] 0.0830 12
206TL2 G %IG=0.265 20
206TL cG E,RI$Other: E|g=534 keV and I|g=0.5 in 1969La18
206TLS G KC=0.0682 10$LC=0.01134 16$MC=0.00264 4
206TLS G NC=0.000666 9$OC=0.0001295 18$PC=1.229E-5 17
206TL L 951.6 11 4- 42 PS 10
206TL A 4268 8 0.006 4.58E+0547 b
206TL cA IA$From I|g and |a
206TL G 686 0.012 [E2] 0.0137019
206TL2 G %IG=0.0062 5
206TLS G KC=0.01048 15$LC=0.002445 34$MC=0.000592 8
206TLS G NC=0.0001488 21$OC=2.78E-5 4$PC=2.134E-6 30
206TL cG E,RI$From a |g-ray spectrum collected with isotopically separated
206TL2cG source (1976TuZY)
206TL L 997.9 4 2-
206TL A 4230 8 0.0004 3.14E+0632 b
206TL cA IA$From I|g and |a
206TL G 732.34 7 0.0008 [M1] 0.0367 5
206TL2 G %IG=0.000416 32
206TLS G KC=0.0302 4$LC=0.00497 7$MC=0.001156 16
206TLS G NC=0.000292 4$OC=5.67E-5 8$PC=5.39E-6 8
206TL cG E$From adopted gammas. E|g=734 keV {I2} observed in |a-|g coin of
206TL2cG 1976TuZY
206TL L 1116.90 10 1-
206TL A 4100 8 0.00037 4.26E+0543 b
206TL cA IA$From I|g and |a
206TL G 1116.9 1 0.0007 M1 0.0124217
206TL2 G %IG=0.000364 28
206TLS G KC=0.01025 14$LC=0.001665 23$MC=0.000387 5
206TLS G NC=9.75E-5 14$OC=1.898E-5 27$PC=1.809E-6 25$IPC=5.53E-7 8
206TL cG E$From adopted gammas. E|g=1120 keV {I2} observed in |a-|g coin of
206TL2cG 1976TuZY