172TM 172ER B- DECAY (49.3 H) 1976MEZC,1972BA01 ENSDF 201512
172TM H TYP=FUL$AUT=BALRAJ SINGH$CIT=ENSDF$CUT=08-DEC-2015$
172TM H TYP=FUL$AUT=BALRAJ SINGH$CIT=NDS 75,199 (1995)$CUT=31-May-1995$
172TM c {+172}Er isotope produced by double neutron capture in enriched
172TMxc {+170}Er
172TM c 1976MeZC (also 1974MeZS,1974LaZQ): measured |g, |g|g. See also
172TM2c 1978LeZA for data from 1976MeZC
172TM c 1974LaZQ: ion exchange for source separation. Measured |g, |g|g
172TM c 1972Ba01: ion exchange for source separation. Measured |g, |g|g, ce.
172TM2c ce data with double-focusing spectrometers
172TM c Others:
172TM c |g: 1967Cl05, 1965Ha24, 1962Gu03, 1961He10, 1961Ba02, 1961Or01,
172TM2c 1961Ha42, 1960Ew07
172TM c |b{+-}, |b|g: 1965Ha24, 1962Gu03, 1961Or01, 1961He10
172TM c ce: 1965Ha24, 1961He10
172TM c |g|g: 1962Gu03, 1961Or01, 1961He10, 1961Ha42
172TM c |b|g(t): 1968Ha08
172TM c |gce: 1965Ha24
172TM c |g|g(|q): 1989KrZS. Details of this work are not yet available
172TM c T{-1/2}({+172}Er): 1962Gu03, 1961Or01, 1961Ha42, 1956Ne08
172TM c The decay scheme is from 1976MeZC (see also 1978LeZA)
172TM cG E,RI$From 1976MeZC (data also quoted by 1978LeZA)
172TM cG M,MR$From ce data (1972Ba01). Data normalized to ce(K)(68|g)=63.2, 68|g
172TM2cG assigned as M1 from L-subshell ratios. The |a(exp) values are deduced
172TM3cG (evaluator) from Ice data (1972Ba01 or 1965Ha24) and I|g data
172TM4cG (1976MeZC,1978LeZA). Uncertainties on |a(exp) values are based on a
172TM5cG general statement in 1972Ba01 that uncertainties on Ice values
172TM6cG are |<20%
172TM cG E(A)$Assignment to {+172}Er decay is uncertain (1976MeZC)
172TM CG CC$FROM BrIcc v2.3b (16-Dec-2014) 2008Ki07, "Frozen Orbitals" appr.
172TM2CG When no |d value given, value overlaps listed multipolarities
172TM cL E$From least-squares fit to E|g values
172TM cL J,T$From Adopted Levels
172TM cL $Band assignments are from 1972Ba01 and 1976MeZC
172TM CL BAND(A)$|p1/2[411]~#|n5/2[512],K|p=2-
172TM CL BAND(B)$|p1/2[411]~#|n1/2[521],K|p=1-
172TM CL BAND(D)$|p1/2[411]~#|n1/2[521],K|p=0-
172TM N 0.421 15 1.0 1.0
172TM cN NR$|S(I(|g+ce) to g.s.)=96.5 {I35}. |b{+-} feeding of g.s. is unknown
172TM2cN but it is assumed as <7% from expected log| {If{+1u}t}>8.5 for a 0+ to
172TM3cN 2- |b transition
172TM PN 3
172ER P 0 0+ 49.3 H 5 891 5
172ER cP T$From {+172}Er Adopted Levels
172ER cP QP$From 2012Wa38
172TM G 831 0.0005 AP A ?
172TM G 894 0.003 AP A ?
172TM L 0.0 2- 63.6 H 2 A
172TM B 900 AP 7 LT 8.5 GT 1U?
172TMS B EAV=301.6 19
172TM cB IB$from expected log| {If{+1u}t}>8.5. I|b|?10 (1961He10), <5 (1962Gu03)
172TM L 62.529 4 (3)- A
172TM G 62.524 4 0.49 1 M1+E2 0.29 8 12.6 4
172TMS G KC=9.3 4$LC=2.5 6$MC=0.59 14
172TMS G NC=0.14 3$OC=0.018 4$PC=0.000584 23
172TM cG M,MR$L1:L2:L3=0.6:0.24:0.38. |a(L1)exp=1.3 {I3}, |a(L2)exp=0.49 {I11},
172TM2cG |a(L3)exp=0.77 {I17} (1972Ba01)
172TM L 145.84 6 (4-) A
172TM G 83.15 25 0.007 2 [M1,E2] 5.8 6
172TMS G KC=3.0 15$LC=2.2 15$MC=0.52 38
172TMS G NC=0.119 85$OC=0.0142 93$PC=1.7E-4 11
172TM G 145.83 15 0.003 2 [E2] 0.769
172TMS G KC=0.400 6$LC=0.283 5$MC=0.0687 11
172TMS G NC=0.01565 23$OC=0.00186 3$PC=1.745E-5 25
172TM L 239.92 5 (3-)
172TM G 177.16 15 0.0023 7 [M1,E2] 0.50 12
172TMS G KC=0.37 15$LC=0.100 23$MC=0.0234 62
172TMS G NC=0.0054 14$OC=0.00070 12$PC=2.1E-5 11
172TM G 239.9 2 0.027 2 [M1,E2] 0.204 61
172TMS G KC=0.160 63$LC=0.0345 13$MC=0.0079 6
172TMS G NC=0.00184 11$OC=0.000245 6$PC=9.2E-6 45
172TM cG E,RI$for composite line E|g=239.669 {I15}, I|g=0.037 {I1} (1976MeZC)
172TM L 407.338 2 (1)- 1.07 NS 5 B
172TM cL T$(K| x ray)(407|g)(t) (1968Ha08)
172TM B 3.3 16 7.46 22
172TMS B EAV=144.8 17
172TM G 167.40 7 0.017 2 [E2] 0.475
172TMS G KC=0.272 4$LC=0.1559 22$MC=0.0377 6
172TMS G NC=0.00860 13$OC=0.001032 15$PC=1.223E-5 18
172TM G 344.817 17 1.49 4 (E2) 0.0473 C
172TMS G KC=0.0353 5$LC=0.00927 13$MC=0.00217 3
172TMS G NC=0.000499 7$OC=6.44E-5 9$PC=1.85E-6 3
172TM cG M$|a(K)exp=0.025 {I9} (1965Ha24), |<0.04 (1972Ba01)
172TM G 407.338 3 100.0 20M1(+E2) 0.6 LT 0.060 5 C
172TMS G KC=0.050 5$LC=0.0076 4$MC=0.00170 8
172TMS G NC=0.000397 19$OC=5.7E-5 4$PC=3.0E-6 3
172TM cG M$|a(K)exp=0.052 {I5}, |a(L)exp=0.0069 {I15}, |a(M)exp=0.0029 {I5}
172TM2cG (1972Ba01). |a(K)exp=0.027, |a(L)exp=0.0037 (1965Ha24). |a(K)exp|?0.12
172TMxcG (1961He10)
172TM L 446.036 4 (2)- B
172TM G 38.66 5 0.017 5 M1+E2 0.6 1 57 12
172TMS G LC=44 10$MC=10.6 23
172TMS G NC=2.4 6$OC=0.28 6$PC=0.00199 15
172TM cG E$average of 38.69 {I6} (1976MeZC) and 38.63 {I5} (1972Ba01)
172TM cG M,MR$L1:L2:L3:M=|?0.15:0.53:0.78:0.44.
172TM2cG |a(L1)exp|?8.6, |a(L2)exp=31, |a(L3)exp=46 {I15}, |a(M)exp=26. |d is
172TM3cG based on assigned uncertainty of 50% on Ice values
172TM G 206.09 10 0.007 1 [M1,E2] 0.319 84
172TMS G KC=0.244 94$LC=0.058 8$MC=0.0135 23
172TMS G NC=0.0031 5$OC=0.00041 3$PC=1.39E-5 68
172TM G 300.19 6 0.049 2 [E2] 0.0713
172TMS G KC=0.0516 8$LC=0.01522 22$MC=0.00359 5
172TMS G NC=0.000824 12$OC=0.0001047 15$PC=2.64E-6 4
172TM G 383.501 4 5.58 11(M1) 0.0754 C
172TMS G KC=0.0634 9$LC=0.00935 13$MC=0.00208 3
172TMS G NC=0.000486 7$OC=7.01E-5 10$PC=3.83E-6 6
172TM cG M$|a(K)exp=0.063 {I14} (1972Ba01) gives M1(+E2) with |d<0.9; but
172TM2cG |a(K)exp=0.028, |a(L)exp=0.0066 (1965Ha24) suggest E2
172TM G 446.025 9 7.02 16(M1) 0.0508 C
172TMS G KC=0.0428 6$LC=0.00627 9$MC=0.001393 20
172TMS G NC=0.000326 5$OC=4.70E-5 7$PC=2.58E-6 4
172TM cG M$|a(K)exp=0.049 {I11} (1972Ba01) gives M1(+E2) with |d<0.5; but
172TM2cG |a(K)exp=0.021, |a(L)exp=0.0044 (1965Ha24) suggest E2
172TM L 475.446 2 (0)- D
172TM B 4 LT 7.2 GT
172TMS B EAV=121.9 17
172TM G 29.37 5 0.018 5 E2 755 13
172TMS G LC=579 10$MC=140.8 23
172TMS G NC=31.8 6$OC=3.60 6$PC=0.001301 22
172TM cG E$average of 29.42 {I5} (1974MeZS) and 29.32 {I5} (1972Ba01)
172TM cG M$|a(L2)exp=228 {I70}, |a(L3)exp=275 {I90}, |a(M2)exp+|a(M3)exp=140
172TM2cG {I45}, |a(N)exp=39 {I12} (1972Ba01). |d(E2/M1)>1.7. |a(L)exp=395
172TMxcG (1965Ha24)
172TM G 68.107 4 7.82 16M1 9.38 C
172TMS G KC=7.84 11$LC=1.200 17$MC=0.268 4
172TMS G NC=0.0626 9$OC=0.00899 13$PC=0.000485 7
172TM cG M$K:L1:L2:L3:M1=63.2:6.7:0.61:0.22:2.2. |d(E2/M1)=0.05 {I2} from
172TM2cG L-subshell ratios. |a(K)=8.08, |a(L1)exp=0.86 {I10}, |a(L2)exp=0.078
172TM3cG {I18}, |a(L3)exp=0.028 {I6}, |a(M1)exp=0.28 {I6} (1972Ba01). Ice(K)
172TM4cG for 68|g (mult=M1 as given by subshell ratios) is used for
172TMxcG normalization of ce data for other transitions.
172TM G 475.445 2 2.47 5 (E2) 0.0195
172TMS G KC=0.01534 22$LC=0.00323 5$MC=0.000743 11
172TMS G NC=0.0001719 24$OC=2.29E-5 4$PC=8.41E-7 12
172TM cG M$|a(K)exp|<0.026 (1972Ba01)
172TM L 479.68 9 (1-,2-)
172TM B 0.026 4 9.33 7
172TMS B EAV=120.5 17
172TM G 239.5 2 0.010 2 [M1,E2] 0.205 62
172TMS G KC=0.161 64$LC=0.0346 14$MC=0.0080 6
172TMS G NC=0.00185 12$OC=0.000247 6$PC=9.2E-6 45
172TM G 416.8 5 0.021 7 [M1,E2] 0.044 17
172TMS G KC=0.036 15$LC=0.0062 13$MC=0.0014 3
172TMS G NC=0.00033 7$OC=4.5E-5 11$PC=2.12E-6 97
172TM G 479.76 10 0.027 3 [M1,E2] 0.031 12
172TMS G KC=0.025 11$LC=0.0042 11$MC=0.00094 22
172TMS G NC=0.00022 6$OC=3.06E-5 83$PC=1.48E-6 66
172TM L 496.34 12 ?
172TM G 496.3 3 0.006 3
172TM L 526.23 5 (0-,1,2-)
172TM B 0.028 18 9.1 2
172TMS B EAV=117.8 17
172TM G 80.19 5 0.010 5 [D,E2] 4.0 34
172TM G 118.9 2 0.002 1 [D,E2] 1.1 9
172TM G 463.7 0.005 LT ?
172TM G 526.2 4 0.007 5 [D,E2] 0.019 14
172TM L 535.140 3 (1)- 1.22 NS 5 D
172TM cL T$from |b(K| x ray)(t) (1968Ha08)
172TM B 381 8 46.4 24 5.89 3
172TMS B EAV=102.4 17
172TM cB E$from 1965Ha24. Others: 1962Gu03, 1961Or01, 1961He10
172TM G 59.692 6 6.4 2 M1 14.2
172TM cG M$L1:L2:M1:N1=8.3:0.56:1.6:0.38. |a(L1)exp=1.3 {I3}, |a(L2)exp=0.087
172TM2cG {I20}, |a(M1)exp=0.26 {I6}, |a(N1)exp=0.059 {I13} (1972Ba01).
172TMxcG |a(L)exp=1.5 (1965Ha24)
172TM G 89.09 4 0.011 1 [M1,E2] 4.56 25
172TMS G KC=2.5 12$LC=1.6 11$MC=0.39 27
172TMS G NC=0.088 60$OC=0.0106 65$PC=1.40E-4 83
172TM cG M$|a(K)exp|?11.8 (1972Ba01) is too large for M1 or E2. 1972Ba01 assign
172TMxcG M1,E2
172TM G 127.805 3 5.05 11M1+E2 0.6 3 1.46 6 C
172TMS G KC=1.10 14$LC=0.28 6$MC=0.065 15
172TMS G NC=0.015 4$OC=0.0019 4$PC=6.5E-5 10
172TM cG M$from |a(K)exp=1.13 {I25} and |a(L1)exp=0.15 {I3} (1972Ba01).
172TMxcG |a(L)exp=0.097 (1965Ha24)
172TM G 295.3 3 0.006 4 A ?
172TM G 472.71 4 0.074 4 [E2] 0.0198
172TMS G KC=0.01556 22$LC=0.00328 5$MC=0.000757 11
172TMS G NC=0.0001750 25$OC=2.33E-5 4$PC=8.52E-7 12
172TM G 535.143 9 0.696 16(M1,E2) 0.0231 87
172TMS G KC=0.0191 77$LC=0.00308 82$MC=6.9E-4 18
172TMS G NC=1.61E-4 42$OC=2.27E-5 66$PC=1.12E-6 49
172TM cG M$|a(K)exp=0.014 {I5} (1965Ha24), |<0.09 (1972Ba01)
172TM L 610.062 2 1+ 0.3 NS LE
172TM cL T$from |b(610|g)(t) (1968Ha08)
172TM B 279 5 46.4 20 5.56 3
172TMS B EAV=78.8 16
172TM cB E$weighted average of 310 {I30} (1961He10), 260 {I50} (1961Or01), 278
172TM2cB {I5} (1962Gu03), 292 {I15} (1965Ha24)
172TM G 74.940 8 0.28 1 E1 0.710
172TMS G KC=0.582 9$LC=0.0999 14$MC=0.0223 4
172TMS G NC=0.00509 8$OC=0.000660 10$PC=2.50E-5 4
172TM cG M$|a(K)exp|?0.23 (1972Ba01)
172TM G 113.71 13 0.003 2 [D,E2] 1.2 10
172TM G 134.68 6 0.024 1 [E1] 0.1517
172TMS G KC=0.1265 18$LC=0.0197 3$MC=0.00438 7
172TMS G NC=0.001009 15$OC=0.0001361 20$PC=5.88E-6 9
172TM G 164.013 5 1.60 6 E1 0.0902 C
172TMS G KC=0.0754 11$LC=0.01151 17$MC=0.00256 4
172TMS G NC=0.000590 9$OC=8.04E-5 12$PC=3.60E-6 5
172TM cG M$|a(K)exp=0.079 {I17} (1972Ba01), 0.10 (1965Ha24). |d(M2/E1)<0.07
172TM G 202.724 5 2.45 8 (E1) 0.0518 C
172TMS G KC=0.0435 6$LC=0.00652 10$MC=0.001447 21
172TMS G NC=0.000335 5$OC=4.60E-5 7$PC=2.13E-6 3
172TM cG M$|a(K)exp=0.022 {I8} (1965Ha24). |d(M2/E1)<0.2
172TM G 370.3 2 0.0029 6
172TM G 547.54 0.0007 LT ?
172TM G 610.062 2 105.0 24E1 0.00379
172TMS G KC=0.00322 5$LC=0.000449 7$MC=9.91E-5 14
172TMS G NC=2.31E-5 4$OC=3.28E-6 5$PC=1.724E-7 25
172TM cG M$|a(K)exp=0.0027 {I6} (1972Ba01), 0.0015 (1965Ha24)
172TM L 714.50 9 (0-,1)
172TM B 0.014 3 8.42 11
172TMS B EAV=47.6 15
172TM G 179.6 4 0.0023 9 [D,E2] 0.34 25
172TM G 307.15 10 0.024 5 [D,E2] 0.08 6
172TM G 714.45 25 0.004 3
172TM L 797.42 10 (0-,1)
172TM B 0.0117 13 7.65 8
172TMS B EAV=24.4 14
172TM G 187.4 4 0.002 2 [D,E2] 0.29 23 A ?
172TM G 734.90 0.0003 LT ?
172TM G 797.42 10 0.025 1