220AC 224PA A DECAY 1996LI05 11NDS 201104
220AC H TYP=FUL$AUT=E. BROWNE, J. K. TULI$CIT=NDS 112, 1115 (2011)$
220AC2 H CUT=31-Oct-2010$
220AC D Modified by E. Browne (Jan. 11, 2011) ICC's from BRICC.
220AC2D New and consistent interpretation of the decay scheme. G-ray
220AC3D transition-intensity balance reproduced alpha-particle intensities.
220AC cA E,IA From 1996Li05, unless otherwise noted
220AC cA HF r{-0}({+220}Ac)=1.530 {I20}
220AC cA IA(A)$1987FuZT reported one |a group with E|a=7408 and I|a=17% {I2}
220AC DG CC$ FROM BrIcc v2.2 (31-Mar-2008) 2008KiAA, "Frozen Orbitals" appr.
220AC cG All |g-ray data are from 1996Li05
220AC cG RI I|g per 1000|a
220AC cG M Based on |a(K)exp and |a(L)exp and K/L ratios, values not
220ACxcG given.
220AC cG E(X) Possible doublet.
220AC cL 1996Li05: measured |a, |g, ce, |a|g, (|a)(ce), (|a)(|g)(ce)
220AC cL 1990An19: measured |a
220AC cL 1987FuZT: measured |a, time correlated |a|a
220AC cL The decay scheme is that proposed by 1996Li05, and is based
220AC2cL on |g, |a, |a|g and (|a)(ce) measurements.
220AC cL 1987FuZT also measured E|a and
220AC2cL I|a and the results, although in general agreement with those from
220AC3cL 1996Li05, show some discrepancies. In particular, 1987FuZT reported an
220AC4cL |a group with E|a=7528 keV which feeds a 28-keV level. This |a group
220AC5cL was not seen in 1996Li05.
220AC cL Evaluators have significantly modified the decay scheme by
220AC2cL introducing a 28-keV level, as suggested in 1987FuZT.
220AC3cL Thus, the 28-keV |g ray reported in 1996Li05 is probably a
220AC4cL doublet. The individual intensities have been adjusted to produce a
220AC5cL more consistent transition-intensity balance in the decay scheme,
220AC6cL and to reproduce the experimental alpha-particle intensities.
220AC7cL The multipolarity of the 40.7-keV |g ray has been reported as M1
220AC8cL in 1996Li05. Evaluators, however, have assigned an M1+3%E2
220AC9cL multipolarity to the |g ray for consistency in the decay-scheme
220ACAcL transition intensity balance, since its conversion coefficient is
220ACBcL very sensitive to an E2 admixture. Using this interpretation, the
220ACCcL sum of the |g-ray transition intensities to the g.s. and 13-keV
220ACDcL is 116 (13)%.
220AC cL 1990An19 observed two |a groups with E|a=7460 (25%) and
220AC2cL 7555 (75%) which they were interpreted to belong to
220AC3cL a parent of {+220}Ac.
220AC3cL These results are in disagreement with those reported in 1996Li05.
220AC cL E From least squares fit to |g-ray energies.
220AC cL J Proposed by 1996Li05, based on |g-ray multipolarities,
220AC2cL |a hindrance factors, and shell model expectations.
224PA P 0 (5-) 0.79 S 6 7694 5
220AC N 0.10 1.00
220AC PN 2
220AC L 0.0 (3-)
220AC A 7556 0.5 LT 900 GT
220AC L 13.79 13 (2-)
220AC A 7542 0.5 LT 810 GT
220AC G 13.8 [M1,E2] 2.1E4 21 S
220ACS G MC=1.6E4 16$NC+=5.E3 6
220ACS G NC=4.E3 5$OC=9.E2 9$PC=1.4E2 14$QC=0.30 9
220AC cG M |a(M1)=304, |a(E2)=43000
220AC L 28 ?
220AC cL E level suggested by |a group reported in 1987FuZT
220AC A 7528 2.9 6 125
220AC cA I|a=1.3% {I2}, from |g-ray transition intensity balance.
220AC cA E,IA From 1987FuZT, |a group not seen in 1996Li05
220AC G 28.0 1 3.0 4 [E1] 3.34 6 X
220ACS G LC=2.50 5$MC=0.634 11$NC+=0.202 4
220ACS G NC=0.163 3$OC=0.0340 6$PC=0.00487 8$QC=0.000164 3
220AC cG RI$Evaluators have interpreted this |g ray as a doublet with
220AC2cG I|g(doublet)=8.1 (6) (1996Li05). I|g=3.0 {I4} and E1 multipolarity was
220AC3cG assumed from decay-scheme balance consistency.
220AC L 40.69 10 (4-)
220AC A 7515 0.5 LT 660 GT
220AC cA I|a|?13% from |g-ray transition intensity balance.
220AC G 40.7 1 13.4 8 M1+E2 0.18 70.3 12
220AC cG M$Reported as M1 in 1996Li05. Evaluators adopted M1+E2 for
220AC2cG transition-intensity balance purposes.
220ACS G LC=52.7 9$MC=13.21 22$NC+=4.45 8
220ACS G NC=3.50 6$OC=0.795 14$PC=0.1388 23$QC=0.00860 14
220AC L 68.71 14 (5-)
220AC A 7488 70 3.8 21
220AC cA IA 66 {I3} from 1987FuZT
220AC cA I|a=71% {I8}, from |g-ray transition intensity balance.
220AC G 28.0 1 5.1 5 M1 143 3 X
220AC cG RI$Evaluators have interpreted this |g ray as a doublet with
220AC2cG I|g(doublet)=8.1 (6) (1996Li05). I|g=5.1 {I5} was assumed from
220AC3cG decay scheme balance consistency.
220ACS G LC=108.4 19$MC=26.1 5$NC+=8.86 16
220ACS G NC=6.93 13$OC=1.61 3$PC=0.298 6$QC=0.0266 5
220AC L 71.56 20 (1-)
220AC A 7484 0.7 LT 370 GT
220AC cA I|a<3.4%, from |g-ray transition intensity balance.
220AC G 57.8 2 2.6 9 [M1] 17.0 3
220ACS G LC=12.83 23$MC=3.08 6$NC+=1.046 19
220ACS G NC=0.817 15$OC=0.190 4$PC=0.0352 6$QC=0.00313 6
220AC L 108.51 18 (3-)
220AC A 7449 4.0 49 27
220AC cA I|a=3.9% {I12}, from |g-ray transition intensity balance.
220AC G 67.8 2 3.8 10M1 10.63 18
220ACS G LC=8.05 14$MC=1.93 4$NC+=0.655 11
220ACS G NC=0.512 9$OC=0.1191 20$PC=0.0220 4$QC=0.00196 4
220AC L 113.30 20 (1-)
220AC A 7444 2.5 75 40
220AC cA I|a=1.1% {I2}, from |g-ray transition intensity balance.
220AC G 113.3 2 1.6 3 (E2) 6.07 10
220ACS G KC=0.266 4$LC=4.25 7$MC=1.163 19$NC+=0.388 7
220ACS G NC=0.309 5$OC=0.0675 11$PC=0.01059 18$QC=5.02E-5 8
220AC L 145.6 3 ?
220AC cL I|a=2.6% {I9}, from |g-ray transition intensity balance.
220AC G 74.0 2 2.7 9 [M1] 8.74 13
220ACS G LC=19 13$MC=5 4$NC+=1.7 12
220ACS G NC=1.3 10$OC=0.29 21$PC=0.05 3$QC=0.0009 7
220AC cG M$Assumed by evaluators from |g-ray transition intensity balance.
220AC dG M |a(E1)=0.257, |a(E2)=43.8, |a(M1)=8.74
220AC L 150.18 14 (4-)
220AC A 7408 4.0 35 20 A
220AC cA I|a=3.5% {I5}, from |g-ray transition intensity balance.
220AC G 109.5 1 3.0 3 M1 13.07
220ACS G KC=10.43 15$LC=2.00 3$MC=0.480 7$NC+=0.1628 24
220ACS G NC=0.1272 19$OC=0.0296 5$PC=0.00547 8$QC=0.000486 7
220AC L 153.00 10 (2-)
220AC A 7405 12 12 6 A
220AC cA I|a=11.2% {I8}, from |g-ray transition intensity balance.
220AC G 39.5 [M1,E2] 5.E2 5 ?
220ACS G LC=3.E2 3$MC=9.E1 9$NC+=3.E1 3
220ACS G NC=25 23$OC=5 5$PC=0.9 8$QC=0.007 3
220AC dG M |a(M1)=55.0, |a(E2)=909
220AC G 81.5 3 3.0 LEM1 6.22 11
220ACS G LC=4.71 9$MC=1.129 20$NC+=0.383 7
220ACS G NC=0.300 6$OC=0.0697 13$PC=0.01288 23$QC=0.001145 21
220AC G 139.2 1 4.8 4 M1 6.65
220ACS G KC=5.32 8$LC=1.003 15$MC=0.241 4$NC+=0.0817 12
220ACS G NC=0.0638 9$OC=0.01484 21$PC=0.00275 4$QC=0.000243 4
220AC G 153.0 1 10.7 7 M1 5.08
220ACS G KC=4.07 6$LC=0.766 11$MC=0.184 3$NC+=0.0623 9
220ACS G NC=0.0487 7$OC=0.01133 16$PC=0.00209 3$QC=0.000186 3
220AC L 184.21 16 (3-)
220AC A 7375 2.5 43 24
220AC cA I|a=3.3% {I3}, from |g-ray transition intensity balance.
220AC G 170.5 3 1.9 3 M1 3.74
220ACS G KC=3.00 5$LC=0.563 9$MC=0.1349 20$NC+=0.0458 7
220ACS G NC=0.0358 6$OC=0.00832 13$PC=0.001539 23$QC=0.0001364 21
220AC G 184.2 2 6.3 5 M1 3.01
220ACS G KC=2.41 4$LC=0.452 7$MC=0.1083 16$NC+=0.0368 6
220ACS G NC=0.0287 5$OC=0.00668 10$PC=0.001236 18$QC=0.0001095 16
220AC L 233.81 17 (5+)
220AC A 7326 1.5 49 27
220AC cA Two |a groups with E|a=7337, I|a=1.4% {I3} and
220AC2cA E|a=7316, I|a=1.9% {I3} reported in 1987FuZT.
220AC cA I|a=1.0% {I2}, from |g-ray transition intensity balance.
220AC G 165.1 1 8.4 15E1 0.1458
220ACS G KC=0.1150 17$LC=0.0234 4$MC=0.00563 8$NC+=0.00187 3
220ACS G NC=0.001476 21$OC=0.000333 5$PC=5.76E-5 9$QC=3.64E-6 6
220AC L 263.22 15 (4+)
220AC A 7297 2.0 29 16
220AC cA E|a=7.292, I|a=3.6% {I5} reported in 1987FuZT
220AC cA I|a=2.7% {I2}, from |g-ray transition intensity balance.
220AC G 113.1 2 5.1 5 E1 0.360
220ACS G KC=0.278 4$LC=0.0623 10$MC=0.01506 23$NC+=0.00498 8
220ACS G NC=0.00394 6$OC=0.000880 13$PC=0.0001488 22$QC=8.47E-6 13
220AC G 154.7 2 2.8 6 [E1] 0.1705
220ACS G KC=0.1340 20$LC=0.0276 4$MC=0.00665 10$NC+=0.00221 4
220ACS G NC=0.00174 3$OC=0.000393 6$PC=6.77E-5 10$QC=4.21E-6 6
220AC G 194.5 1 15.7 10E1 0.0986
220ACS G KC=0.0782 11$LC=0.01544 22$MC=0.00371 6$NC+=0.001235 18
220ACS G NC=0.000974 14$OC=0.000220 3$PC=3.84E-5 6$QC=2.53E-6 4
220AC L 312.0 8
220AC A 7249 0.1 3.9E+2 22
220AC cA I|a=0.03%, from |g-ray transition intensity balance.
220AC G 298.2 7 0.3 AP
220AC dG M |a(E1)=0.0370, |a(E2)=0.166, |a(M1)=0.831
220AC L 335.18 20
220AC A 7226 0.1 3.2E+2 18
220AC cA E|a=7221, I|a=1.3% {I4} from 1987FuZT
220AC cA I|a=0.39% {I5}, from |g-ray transition intensity balance.
220AC G 151.0 2 1.7 5
220AC dG M |a(E1)=0.183, |a(E2)=1.86, |a(M1)=5.58
220AC G 182.0 4 1.0 AP
220AC dG M |a(E1)=0.117, |a(E2)=0.897, |a(M1)=3.29
220AC G 294.7 5 0.8 AP
220AC dG M |a(E1)=0.0380, |a(E2)=0.172, |a(M1)=0.859
220AC G 335.0 7 0.4 AP
220AC dG M |a(E1)=0.0285, |a(E2)=0.118, |a(M1)=0.604
220AC L 356.1 3
220AC A 7205 0.2 1.8E+2 8
220AC cA E|a=7191, I|a=0.7% {I2} reported in 1987FuZT
220AC cA I|a=0.43% {I7}, from |g-ray transition intensity balance.
220AC G 247.6 3 1.8 5
220AC dG M |a(E1)=0.0565, |a(E2)=0.300, |a(M1)=1.39
220AC G 287.4 3 2.1 5
220AC dG M |a(E1)=0.0402, |a(E2)=0.186, |a(M1)=0.921
220AC G 315.8 7 0.4 AP
220AC dG M |a(E1)=0.0325, |a(E2)=0.140, |a(M1)=0.710
220AC L 411.9 7
220AC A 7151 0.05 LT 340 GT
220AC cA I|a=0.04%, from |g-ray transition intensity balance.
220AC G 398.0 10 0.2 AP
220AC dG M |a(E1)=0.0196, |a(E2)=0.0730, |a(M1)=0.378
220AC G 412.0 10 0.2 AP
220AC dG M |a(E1)=0.0182, |a(E2)=0.0667, |a(M1)=0.345