212RA 216TH A DECAY (133 US) 2005Ku31 20NDS 202009
212RA H TYP=FUL$AUT=K. Auranen and E.A. McCutchan$CIT=NDS 168, 117 (2020)$
212RA2 H CUT=1-Aug-2020$
212RA cA HF$r{-0}({+212}Ra)=1.4695 {I14}; see {+216}Th |a decay (26.0 ms)
212RA2cA dataset.
212RA cL E$From E|g data, except the E(level)=1967 which is derived from the
212RA2cL measured E|a and Q(|a) from 2017Wa10.
212RA cL J,T$From the Adopted Levels.
212RA cG E$From 2005Ku31, except where noted.
212RA cG RI$Deduced by the evaluator based on reported |a feeding and
212RA2cG internal-conversion coefficients.
212RA c 2005Ku31: the nuclei of interest were observed as the |a-decay
212RA2c daughter of {+216}Th nuclei produced in the
212RA3c {+170}Er({+50}Ti,4n){+216}Th fusion evaporation reaction at GSI,
212RA4c Germany. The 400-|mg/cm{+2} thick {+170}Eu targets were evaporated on
212RA5c 30-|mg/cm{+2} thick carbon foils. UNILAC provided the 217.5 MeV
212RA6c {+50}Ti beam with an intensity of |?200 pnA. Residues were selected
212RA7c with the velocity filter SHIP, and implanted into a
212RA8c position-sensitive 16-strip PIPS silicon detector. E|a, E|g, I|g,
212RA9c |a|g coin, recoil-|g-|a-|g correlations were measured. |g rays were
212RAac detected, without a coincidence condition, with a Clover Ge detector
212RAbc placed behind the PIPS.
212RA c 2019Zh54: {+216}Th produced in the {+183}W({+40}Ar,X) reaction with
212RA2c E({+40}Ar)=180 MeV followed by separation with the SHANS separator
212RA3c and implantation into a position-sensitive strip detector. Measured
212RA4c E|a, I|a, |a(t).
212RA cA E,IA$From 2005Ku31, except where noted.
212RA cG M$From the Adopted Gammas
212RA D CC$FROM BrIcc v2.3b (16-Dec-2014) 2008Ki07, "Frozen Orbitals" appr.
216TH P 2045 9 (8+) 133 US 4 8072 4
216TH cP T$weighted average of 126 |ms {I14} (2019Zh54), 135 |ms {I4}
216TH2cP (2005Ku31), and 128 |ms {I8} (2001Ha46). Others: 120 |ms {I+60-30}
216TH3cP and 250 |ms {I+340-90} from |a(t) to excited state levels (2019Zh54),
216TH4cP 180 |ms {I40} (1983Hi08), and 140 |ms {I5} (2000He17) which is
216TH5cP assumed to be superseded by 2005Ku31.
212RA N 1.0 0.028 9
212RA cN BR$from 2005Ku31. Others: %|a= 5 {I+5-3} (2001Ha46), %|a|?3
212RA2cN (1983Hi08) deduced from %IT=97 {I1} from the observed isomer ratio
212RA3cN and comparison with that for the {+217}Pa(29/2) level.
212RA L 0.0 0+ 13.0 S 2
212RA A 9922 1074 4 3.5E4 12
212RA cA E$weighted average of 9918 keV {I15} (2019Zh54), 9930 keV {I10}
212RA2cA (2005Ku31), 9915 keV {I15} (2001Ha46), 9912 keV {I20} (1983Hi08).
212RA3cA Other: 9933 keV {I15} (2000He17) which is assumed to be superseded by
212RA4cA 2005Ku31.
212RA cA IA$other: 84 {I12} (2019Zh54)
212RA L 629.30 10 2+
212RA G 629.3 1 25 4 E2 0.0230
212RAS G KC=0.01624 23$LC=0.00504 7$MC=0.001273 18$NC=0.000336 5$OC=7.43E-5 11$
212RAS G PC=1.208E-5 17$QC=5.78E-7 8
212RA A 9308 1213 3 8.2E3 33
212RA cA E$weighted average of 9301 keV {I16} (2019Zh54) and 9312 keV {I12}
212RA2cA(2005Ku31)
212RA cA IA$other: 11.5 {I+60-43} (2019Zh54)
212RA L 1454.30 22 4+
212RA G 825.0 2 13 2 E2 0.01311
212RAS G KC=0.00985 14$LC=0.00245 4$MC=0.000607 9$NC=0.0001599 23$OC=3.57E-5 5$
212RAS G PC=5.93E-6 9$QC=3.40E-7 5
212RA L 1895.10 24 6+
212RA G 440.8 1 12 2 E2 0.0526
212RAS G KC=0.0323 5$LC=0.01508 22$MC=0.00391 6$NC=0.001032 15$OC=0.000226 4$
212RAS G PC=3.55E-5 5$QC=1.205E-6 17
212RA L 1967 13 8+ 9.3 US 9 M1
212RA G 63.3 20 0.15 4 [E2] 84 14 S
212RAS G LC=61 11$MC=17 3$NC=4.4 8$OC=0.93 16$PC=0.134 23$QC=0.00032 5
212RA cG E$from 1986Ko01 using observed ce(L) and ce(M) in
212RA2cG {+204}Pb({+12}C,4n|g). In 2005Ku31 the transition was not observed,
212RA3cG but the level energy differences suggest a value of |?72 keV.
212RA cG RI$the uncertainty includes the uncertainty on |a feeding intensity
212RA2cG as well as the uncertainty on the conversion coefficient.
212RA A 7999 1013 2 2.4 9
212RA cA E$other: 7998 {I18} (2019Zh54)
212RA cA IA$other: 4.9 {I+48-27} (2019Zh54)