219RA 223TH A DECAY (0.60 S) 1992LI09,1987EL02,1989AN1321NDS 202106
219RA H TYP=FUL$AUT=Balraj Singh et al.,$CIT=NDS 175, 1 (2021)$CUT=19-May-2021$
219RA c 1992Li09: {+223}Th produced in {+208}Pb({+18}O,3n),E=82 MeV,
219RA2c using >99% enriched {+208}Pb target. Measured E|a, I|a, E|g, %I|g,
219RA3c |a|g coin. Deduced |g-ray multipolarities from |g-ray transition
219RA4c intensity balances and I(K x-ray)/I|g ratios. Revised decay scheme, in
219RA5c view of the results from in-beam gamma-ray spectroscopy, is given by
219RA6c 2001Sh14 (also 1993Sh43), together with a detailed theoretical analysis
219RA7c of structure of {+219}Ra
219RA c 1987El02: {+223}Th produced in {+208}Pb({+18}O,3n),E=83 MeV.
219RA2c Measured E|a, E|g, I|g, Ice, |a|g coin, |a(ce)-coin using Ge(Li) and
219RA3c Si(Li) detectors. Assignment of |a-particle groups to {+223}Th is based
219RA4c on agreement with E|a values from 1970Va13, and on the observation of
219RA5c Ra x-rays in coincidence with |a particles.
219RA c 1989An13: {+223}Th produced in {+208}Pb({+22}Ne,|a3n),E=100-130
219RA2c MeV. Measured E|a, I|a using semiconductor detector
219RA c 1990An19: {+223}Th produced in {+205}Tl({+22}Ne,p3n), E=100-109 MeV.
219RA2c Measured E|a, I|a using semiconductor detector
219RA c 1970Va13: {+223}Th produced in {+208}Pb({+18}O,3n),E=108-130 MeV;
219RA2c {+205}Tl({+22}Ne,p3n),E|?100 MeV; {+208}Pb({+19}F,p3n),E=100-130 MeV.
219RA3c Measured E|a, I|a using semiconductor detector
219RA c 2001Sh14 (also 1993Sh43): analyzed spectroscopic data from reaction and
219RA2c |a-decay experiments. Deduced levels, J, |p, configurations.
219RA c The decay scheme presented here is from 1992Li09, as
219RA2c modified by 2001Sh14 on the basis of {+208}Pb({+14}C,3n|g) results
219RA3c in 2000Ri12. Evaluators' assignment of (5/2+) for 140-keV level,
219RA4c consistent with the favored |a decay (HF=2.7) from {+223}Th
219RA5c parent J|p(g.s.)=(5/2+)
219RA6c This decay scheme supersedes that of 1987El02, which included |g
219RA7c rays of 57.1-, 68.2-, and 75.2 keV that defined levels at 57-,
219RA8c 68.2-, and 145 keV. 1992Li09 did not see these |g rays in a |g-ray
219RA9c spectrum with about ten times better statistics.
219RA c The measured K| x-ray intensity of 49% {I3} (1992Li09) agrees well with
219RA2c 50% {I5} deduced by evaluators (using the RADLST computer program), and
219RA3c confirms the self-consistency of the decay scheme adopted here. The
219RA4c total average radiation energy of 7572 keV {I40}, deduced using the
219RA5c RADLST code, agrees with Q(|a)=7567 keV {I4} from 2021Wa16
219RA cA E,IA$From 1992Li09, unless otherwise specified. Uncertainty of
219RA2cA 5 keV in energy is estimated by evaluators. Values of I|a deduced by
219RA3cA evaluators from |g-transition intensity balances are given
219RA4cA under comments
219RA cA HF$The nuclear radius parameter r{-0}({+219}Ra)=1.5478 {I22}
219RA2cA is deduced from interpolation (or unweighted average) of radius
219RA3cA parameters of the adjacent even-even nuclides from 2020Si16
219RA cG E,RI$From 1992Li09 unless otherwise stated.
219RA cG M(a)$Deduced from K| x ray/I|g ratios in |a|g coin experiments
219RAxcG (1992Li09).
219RA cL E$Deduced from least-squares fit to |g-ray energies.
219RA cL J$From Adopted Levels, based mainly on proposed assignments by
219RA2cL 2001Sh14 (also 1993Sh43) from their analysis of in-beam |g-ray
219RA3cL data, band assignments, and analogy with band structures in
219RA4cL {+221}Ra and {+223}Ra.
219RA cL E(A)$Member of K|p=(1/2+) structure
219RA cL E(B)$Member of K|p=(5/2+) structure
223TH P 0.0 (5/2+) 0.60 S 2 7567 4
223TH cP J,T$(5/2)+ in {+223}Th Adopted Levels in the ENSDF database
223TH2cP (May 2001 update), based on analogy with 5/2+ g.s. of isotonic
223TH3cP {+221}Ra, and also theoretical calculations by 1987Sh24. No new
223TH4cP references for T{-1/2} of {+223}Th decay are available after the
223TH5cP 2001 evaluation. Evaluators place the assignment in parentheses
223TH cP QP$From 2021Wa16
219RA N 1.0 1.0 1.0
219RA cN NR$Absolute |g-ray intensities (per 100 decays of parent) are
219RA2cN reported by 1992Li09.
219RA cN BR$%|a=100 for {+223}Th |a decay
219RA PN 3
219RA L 0.0 (7/2+) 9 MS 2 A
219RA cL T$from Adopted Levels.
219RA A 7435 5 1 AP 440 AP
219RA cA E$value deduced by evaluators from E|a=7323 and E(level)=113.7,
219RA2cA E|a=7298 and E(level)=140.0, and E|a=7286 and E(level)=152.0
219RA3cA (1992Li09). E|a=7432 reported by 1992Li09.
219RA L 16.6 2 (11/2+) 10 MS 3 AM
219RA2 L %A AP 100 (2018Sa45) $ %IT=?
219RA cL $Only the |a decay to {+215}Rn has been observed by 2018Sa45
219RA cL T$from Adopted Levels.
219RA cL $The existence of this level is based upon the observation of
219RA2cL 97-keV |g rays in coincidence with 7323 keV |a particles that
219RA3cL populate the 113.7-keV level (1992Li09). The isomeric character of
219RA4cL this state, with an estimate of half-life, and its |a decay mode, has
219RA7cL been first proposed by 2018Sa45
219RA A 7418 0.5 LT 750 GT ?
219RA L 52.0 3 (3/2+) A
219RA A 7383 0.5 LT 570 GT ?
219RA cA $I|a=0% {I7} from |g-transition intensity balance
219RA G 52.0 3 0.03 1 [E2] 216 7
219RAS G LC=159 5$MC=43.1 14
219RAS G NC=11.4 4$OC=2.41 8$PC=0.345 11$QC=0.000738 22
219RA L 113.74 11 (9/2+) B
219RA A 7323 5 13.2 14
219RA cA E,IA$other values: E|a=7320 {I20}, I|a=81 {I8}, multiplet
219RA2cA (1989An13). E|a=7317 {I10}, I|a=40 {I10} (original E|a has been
219RA3cA increased by 2 keV because of a change in the energy of the {+215}Po
219RA4cA calibration standard (1970Va13,1977Ma30)). E|a=7320 {I10}, I|a=29 {I5}
219RA5cA (1990An19). E|a=7324 {I10} (1987El02). Others: 1952Me13, 1969Ha32.
219RA cA $I|a=10% {I9} from |g-transition intensity balance.
219RA G 97.14 17 0.9 1 M1 3.39
219RA cG E$weighted average of 97.2 {I2} (1992Li09) and 97.10 {I17} (1987El02).
219RA2 G ELC=1.4 3 (1987El02)
219RA cG M$|a(L)exp is |?60% lower than the theoretical value for M1 (1987El02),
219RA2cG however, no other multipolarity is consistent with this conversion
219RA3cG coefficient, thus definite M1 is assigned for 97.14-keV transition
219RAS G LC=2.57 4$MC=0.614 10$NC=0.1619 25$OC=0.0369 6$
219RAS G PC=0.00644 10$QC=0.000506 8
219RA G 113.74 11 1.6 2 M1 10.83 a
219RA cG E$weighted average of 113.8 {I1} (1992Li09) and 113.55 {I17}
219RAxcG (1987El02).
219RA2 G ELC=1.4 3 (1987El02)
219RAS G KC=8.68 13$LC=1.627 24$MC=0.389 6
219RAS G NC=0.1026 15$OC=0.0234 4$PC=0.00408 6$QC=0.000320 5
219RA L 140.02 9 (5/2+) B
219RA A 7298 7 55.3 2.7
219RA cA E$other E|a=7296 {I13} (1987El02).
219RA cA $I|a=46% {I8} from |g-transition intensity balance.
219RA G 88.0 5 0.5 4 [M1+E2] 11 7 6.3 22
219RA cG TI$from |g-ray transition intensity balance at 52-keV level using
219RA2cG %|a=0 for 52-keV level (1992Li09).
219RA cG RI$from I(|g+ce) and |a(theory) for assumed mult=[M1+E2]
219RAS G LC=8 5$ MC=2.1 14$ NC=0.6 4$OC=0.12 8$PC=0.018 10$QC=0.0004 3
219RA G 140.01 9 5.8 6 M1 5.99 a
219RA cG E$weighted average of 140.0 {I1} (1992Li09) and 140.02 {I9} (1987El02).
219RA2 G ELC=0.9 1
219RA cG M$|a(L)exp is consistent with M1 (|d(E2/M1)<0.5) (1987El02).
219RAS G KC=4.81 7$LC=0.895 13$MC=0.214 3
219RAS G NC=0.0565 8$OC=0.01288 19$PC=0.00225 4$QC=0.0001761 25
219RA L 151.97 9 (7/2+) B
219RA A 7286 10 26.4 5.1
219RA cA $I|a=28% {I10} from |g-transition intensity balance.
219RA cA E$others: E|a=7285 {I10}, measured in coincidence with 152|g
219RA2cA (1987El02); E|a=7287 {I10} (original E|a increased by 2 keV because of
219RA3cA a change in the energy of the {+215}Po calibration standard
219RA4cA (1970Va13,1977Ma30)); E|a=7290 {I10} (1990An19).
219RA cA IA$others: 60 {I10} (1970Va13,1977Ma30); 41 {I5} (1990An19)
219RA G 38.2 3 0.07 3 (M1+E2) 0.31 15 132 62 9.3 19
219RAS G LC=1.0E2 4$MC=25 11
219RAS G NC=6 3$OC=1.4 6 $PC=0.22 8 $QC=0.0074 4
219RA cG TI$from in-out intensity balance at 113.7 level. 20% uncertainty
219RA2cG is assumed by the evaluators
219RA cG MR$from |a=132 {I62}, deduced by evaluators from |g-ray transition
219RA2cG intensity balance at the 113-keV level using measured
219RA3cG |a intensity of 13.2% from 1992Li09.
219RA G 151.99 10 3.7 4 M1+E2 0.95 +90-50 3.3 10 a
219RA cG E$weighted average of 152.0 {I1} (1992Li09) and 151.98 {I12}
219RAxcG (1987El02).
219RA2 G ELC=0.77 14 $ EMC=0.18 8
219RAS G KC=2.1 11$LC=0.86 10$MC=0.22 4
219RAS G NC=0.059 9 $OC=0.0128 18$PC=0.00203 17$QC=8.E-5 4
219RA cG M,MR$from |a=3.3 {I10} (deduced by evaluators from |g-ray transition
219RA2cG intensity balance at the 152-keV level using measured |a intensity of
219RA3cG 26.4% from 1992Li09). |a(L)exp and |a(M)exp from 1987El02 give
219RA4cG |d(E2/M1)<1.0
219RA L 271.6 8 ?
219RA cL J$very tentative (9/2-) (2001Sh14)
219RA G 119.6 ?
219RA G 157.8 ?
219RA L 320.6 4 (3/2+,5/2,7/2+)
219RA cL J$(5/2-) from systematics in 2001Sh14
219RA A 7120 0.7 49
219RA G 168.8 5 0.06 3
219RA G 268.0 10 0.1 AP
219RA G 320.6 8 0.02 AP
219RA L 328.3 5 (1/2+:7/2+)
219RA cL J$very tentative (3/2-) (2001Sh14)
219RA A 7107 0.1 LT 310 GT
219RA G 188.4 7 0.02 AP
219RA G 276.1 6 0.04 2
219RA L 404.75 16 (3/2+,5/2,7/2+)
219RA cL J$(5/2-) from systematics in 2001Sh14
219RA A 7037 1.9 9
219RA G 252.8 2 0.30 9
219RA G 264.7 2 0.7 2
219RA G 353.0 0.02 AP
219RA L 421.7 12
219RA cL J$very tentative (7/2-) (2001Sh14)
219RA A 7021 0.3 50
219RA G 421.7 12 0.03 AP
219RA L 445.0 3 (5/2+,7/2,9/2+)
219RA cL J$(7/2-) from systematics in 2001Sh14
219RA A 6998 1.5 8.2
219RA G 124.4 ?
219RA G 293.0 5 0.20 5
219RA G 305.0 5 0.2 1
219RA G 331.3 5 0.2 1
219RA L 470.7 5 (5/2+:11/2+)
219RA cL J$(9/2-) from systematics in 2001Sh14
219RA A 6972 0.6 16
219RA G 318.8 7 0.06 3
219RA G 356.9 7 0.10 6
219RA L 515.4 10
219RA cL J$very tentative (11/2-) (2001Sh14)
219RA A 6928 0.4 17
219RA G 401.7 10 0.06 3