155GD 155EU B- DECAY (4.753 Y) 19NDS 201911
155GD H TYP=FUL$AUT=N. NICA$CIT=NDS 160, 1 (2019)$CUT=21-Oct-2019$
155GD D DATA SET UPDATED (APRIL, 2002) BY CW REICH TO INCLUDE THE DDEP-BASED
155GD2D EVALUATION BY CHECHEV AND SERGEEV (^May, 2002). THE VALUES OF EG, RI,
155GD3D MULT AND MR, AS WELL AS T FOR 155EU, OBTAINED BY THESE EVALUATORS ARE
155GD4D ADOPTED HERE. CONF. ASSIGNMENTS NOW INCLUDED, AND VARIOUS COMMENTS
155GD5D RE-DONE. T VALUES ARE INCLUDED FOR TWO EXCITED STATES.
155GD d This data set is based on an evaluation of the |g-ray energy and
155GD2d intensity data done by V. P. Chechev and V. O. Sergeev (KRI), (May,
155GD3d 2002). That decay-data evaluation was done under the "Decay Data
155GD4d Evaluation Project" (DDEP) collaboration, which at that date
155GD4d included evaluators
155GD5d at the following institutions: Laboratoire National Henri Bequerel
155GD6d (LNHB) in France; Physikalisch-Technische Bundesanstalt (PTB) in
155GD7d Germany; HMS Sultan in the United Kingdom; V. G. Khlopin Radium
155GD8d Institute (KRI) in Russia; International Atomic Energy Agency in
155GD9d Austria; National University of Sao Paulo in Brazil; Idaho National
155GDKd Environmental and Engineering Laboratory (INEEL), Argonne National
155GDSd Laboratory (ANL), and Lawrence Berkeley National Laboratory (LBNL)
155GDNd in the United States. The full text of the DDEP evaluation
155GD2d can be found at http://www.nucleide.org/DDEP_WG/DDEPdata.htm
155GD d Because the reviewer (2018) asked to remove the DEPP reference.
155GD2d I (NN) did that.
155GD c The decay scheme is due primarily to 1969Me09 and 1967Fo11. Quite
155GD2c helpful studies of the lowest-energy transitions (<22 keV) have been
155GD3c reported in 1967Fo11, 1975Ch04 (albeit from the {+155}Tb decay),
155GD4c 1979Aw03 and 1990GoZS. This latter work is useful in that it
155GD5c utilizes a a high-resolution electrostatic spectrometer (resolution 7
155GD6c to 12 eV) to study the conversion-electron spectrum.
155GD c |g-ray and x-ray emission probabilities,
155GD3c 1996Ch27, 2002ChZN; {+155}Eu T{-1/2} value: 1999ChZU, 1996ChZY,
155GDxc 2000Ch01.
155GD c Using a high-resolution electrostatic spectrometer, 1990GoZR studied
155GD2c the Auger electron spectrum of a {+155}Eu source. With this instrument,
155GD3c 1990GoZS were able to observe the natural line widths of the K, L1, L2
155GD4c and L3 atomic levels of Gd.
155GD c Others: 1990Me15, 1986Sc25, 1983Wa26, 1982Co05, 1980Gn01, 1976Me10,
155GD2c 1975Kr04, 1974Da24, 1974HeYW, 1972Do14, 1972Em01, 1972Su09, 1971Ge11,
155GD3c 1970Mo23, 1970Ra37, 1970Re08, 1969Ba72, 1969Gr32, 1968Al01, 1968Bl07,
155GD4c 1968Ma15, 1968Om01, 1968So02, 1967Bl11, 1967Ko17, 1967Ma27, 1966Kr01,
155GD5c 1966Mc07, 1966Me06, 1961Ha44, 1961Su13, 1960Su04, 1959Am16, 1959Ha07,
155GD5c 1959Ve18, 1958Bi32, 1958Gl56, 1956Du31, 1954Le08, 1950Ke12, 1950Wi11,
155GD5c 1950Ke12, 1949Ha04, 1949Ma58.
155GD cB IB Computed from the transition-intensity balance at each level.
155GD cG E,RI$Weighted average values of the values listed in comments.
155GD2cG Values of 1969Me09 were superseded by 1990Me15
155GD cG E,RI Listed values for unplaced |g's are those of 1979Aw03
155GD cG M,MR$Adopted values
155GD cL E Values obtained from a least-squares fit involving the
155GD2cL listed |g-ray energies.
155GD cL J From the Adopted Values.
155GD cL BAND(A)$g.s. band. Conf=3/2(521).
155GD cL BAND(B)$Mixed positive-parity band. Conf=3/2(651)+... . Band also
155GD2cL contains components of other i{-13/2}-related Nilsson states, as well
155GD3cL as 3/2[402] from strong |DN=2 mixing.
155GD DG MR$IF NO VALUE GIVEN IT WAS ASSUMED MR=1.00 FOR E2/M1,
155GD2DG MR=1.00 FOR E3/M2 AND MR=0.10 FOR THE OTHER MULTIPOLARITIES
155GD DG CC$FROM BrIcc v2.3b (16-Dec-2014) 2008Ki07, "Frozen Orbitals" appr.
155EU P 0.0 5/2+ 4.753 Y 14 251.8 9
155GD N 0.307 3 1.0 1.0
155GD cN NR Based on a weighted average of
155GD2cN the measurements of 1994Co02 and 1994Eg01, who report 31.1 {I4} photons
155GD3cN per 100 {+155}Eu decays and 30.5 {I3} photons per 100 {+155}Eu decays,
155GD4cN respectively, for I|g(86.6|g). Using a magnetic spectrometer, 1960Su04
155GD5cN measure I|b{+-}=13% for the g.s. |b branch. Based on this value, I|g
155GD6cN normalization is calculated to be 0.325.
155GD PN 3
155GD G 12.70 25 0.032 21
155GD G 13.80 25 0.064 21
155GD G 24.56 30 0.025 25
155GD G 40.75 20 0.086 9
155GD G 107.60 20 0.0013 LT
155GD cG RI from 1969Me09
155GD L 0.0 3/2- STABLE A
155GD B 17.7 11 8.62 3
155GDS B EAV=70.09 28
155GD cB E$1960Su04 report
155GDxcB E|b=250 keV.
155GD L 60.0098 7 5/2- A
155GD B 8.2 4 8.583 23
155GDS B EAV=52.13 27
155GD G 60.0089 10 3.80 10M1+E2 -0.198 8 9.14
155GDS G KC=7.25 11$LC=1.48 4$MC=0.329 9
155GDS G NC=0.0749 20$OC=0.0110 3$PC=0.000543 8
155GD cG E$60.00 {I2} (1959Ha07), 59.97 {I20} (1967Fo11), 60.006 {I4}
155GD2cG (1970Re08), 60.0100 {I18} (1970Ra37),
155GD2cG 60.01 {I4} (1975Kr04), 60.012 {I3} (1976Me10), 60.008 {I2}
155GD2cG (1986Sc25), 60.022 {I15}, (1990Me15), 60.0086 {I10} (1990GoZS);
155GD2cG other: 60.019 {I15} (1969Me09)
155GD cG RI$3.8 {I2} (1968Al01), 4.3 {I3} (1970Re08), 3.9 {I9} (1971Ge11),
155GD2cG 3.8 {I4} (1975Kr04), 3.60 {I10} (1990Me15), 3.99 {I12} (1994Eg01),
155GD2cG 3.9 {I9} (1996Ch27); others: 4.0 (1959Ha07), 5.1 {I20} (1967Bl11),
155GD2cG 3.60 {I8} (1969Me09)
155GD cG MR$calculated by evaluator for this dataset:
155GD2cG 0.198 {I8} from K/L1=6.81 {I36}, L1/L1=1.000 {I4}, L2/L1=0.295 {I13},
155GD2cG L3/L1=0.249 {I12} (1967Fo11); -0.19 {I3} (1975Kr0, |g|g(|q)),
155GD2cG -0.20 {I3} (1961Su13, |g|g(|q))
155GD L 86.5462 9 5/2+ 6.50 NS 4 B
155GD cL T from the adopted values. This value is based on a number
155GD2cL of studies of both the {+155}Eu |b{+-} decay and the {+155}Tb |e decay.
155GD B 25.5 24 7.89 5
155GDS B EAV=44.43 26
155GD G 26.527 21 1.03 6 E1 1.95
155GDS G LC=1.531 22$MC=0.336 5
155GDS G NC=0.0739 11$OC=0.00966 14$PC=0.000328 5
155GD cG E$26.49 {I5} (1975Kr04), 26.530 {I23} (1986Sc25), 26.532 {I21}
155GD2cG (1990Me15); other: 26.513 {I21} (1969Me09)
155GD cG RI$1.00 {I10} (1971Ge11), 1.10 {I13} (197Kr04), 1.03 {I6} (1990Me15);
155GD2cG others: |? 4 (1959Ha07), |? 1 (1968Al01), 26.513 {I21} (1969Me09)
155GD G 86.5463 10 100 E1 0.431
155GD cG E$86.54 {I1} (1959Ha07), 86.52 {I20} (1967Fo11), 86.541 {I3}
155GD2cG (1970Re08), 86.5452 {I33} (1970Ra37), 86.53 {I3} (1975Kr04),
155GD2cG 86.547 {I1} (1986Sc25), 86.554 {I15} (1990Me15);
155GD2cG other: 86.539 {I15} (1986Me09)
155GD cG RI$100 (1959Ha07), 100 (1967Bl11), 100 (1969Al01),
155GD2cG 100 (1970Re08), 100 (1971Ge11), 100 (1975Kr04), 100 (1990Me15),
155GD2cG 100 (1994Eg01), 100 (1996Ch26); other: 100 (1969Me09),
155GDS G KC=0.360 5$LC=0.0555 8$MC=0.01203 17
155GDS G NC=0.00271 4$OC=0.000394 6$PC=1.97E-5 3
155GD cG M 1975Kr04 indicate |d(M2/E1)=0.02 {I5}
155GD L 105.3088 8 3/2+ 1.16 NS 1 B
155GD cL T from the adopted values. This value is based on a number
155GD2cL of studies of both the {+155}Eu |b{+-} decay and the {+155}Tb |e decay.
155GD B 46.2 24 7.466 24
155GDS B EAV=39.08 26
155GD G 18.763 2 0.16 2M1+E2 +0.274 4 362 10
155GDS G LC=280 8$MC=64.9 19
155GDS G NC=14.4 4$OC=1.88 6$PC=0.01653 24
155GD cG E$18.776 {I35} (1969Me09), 18.73 {I3} (1975Kr04), 18.769 {I15}
155GD2cG (1976Ch04, from {+155}Tb |e decay), 18.760 {I4} (1986Sc25),
155GD2cG 18.784 {I35} (1990Me15), 18.764 {I2} (1990G0ZS);
155GD2cG others: 18.75 (1967Fo11)
155GD cG RI$0.17 {I3} (1971Ge11), 0.16 {I2} (1974HeYW), 0.13 {I3} (1975Kr04),
155GD2cG 0.16 {I4} (1990Me15); others: |? 0.1 (1959Ha07), 0.16 {I4} (1969Me09)
155GD cG MR$calculated by evaluator for this dataset from subshell ratios:
155GD2cG 0.293 {I12} from
155GD2cG L1/L1=1.000 {I74}, L2/L1=3.741 {I148}, L3/L1=5.185 {I222},
155GD2cG M1/L1=0.444 {I74}, M2/L1=1.593 {I148}, M3/L1=2.259 {I148},
155GD2cG N1/L1=0.815 {I222}, N2/L1=0.815 {I222} (1990GoZS);
155GD2cG 0.260 {I9} from
155GD2cG L1/L1=1.000 {I119}, L2/L1=3.349 {I218}, L3/L1=4.391 {I263} (1967Fo11)
155GD G 45.2989 10 4.27 12E1 0.437
155GD cG E$45.29 {I1} (1957Bo15), 45.299 {I2} (1970Re08), 45.2972 {I13}
155GD2cG (1970Ra37), 45.27 {I5} (1975Kr04), 45.300 {I1} (1986Sc26),
155GD2cG 45.295 {I13} (1990Me15); other: 45.299 {I13} (1969Me09)
155GD cG RI$3.6 {I7} (1970Re08), 4.1 {I3} (1971Ge11), 3.95 {I40} (1975Kr04),
155GD2cG 3.95 {I40} (1975Kr04), 4.21 {I20} (1990Me15), 4.36 {I12} (194Eg01),
155GD2cG 4.3 {I10} (1996Ch27); others: 2.3 (1959Ha07), 2.8 {I7} (1968Al01),
155GD2cG 4.18 {I19} (1969Me09)
155GDS G LC=0.343 5$MC=0.0747 11
155GDS G NC=0.01665 24$OC=0.00231 4$PC=9.60E-5 14
155GD cG MR from |g|g(|q), 1975Kr04 report |d=-0.035 {I25}. From the
155GD2cG T{-1/2} value for this level and its |g+ce branching, this |d value
155GD3cG implies B(M2)(W.u.)>13, which exceeds RUL of 1. For B(M2)(W.u.)|<1,
155GDxcG |d|<0.0027.
155GD G 105.3087 10 68.8 14E1 0.254
155GDS G KC=0.213 3$LC=0.0320 5$MC=0.00693 10
155GDS G NC=0.001568 22$OC=0.000230 4$PC=1.201E-5 17
155GD cG E$105.32 {I3} (1957Bo15), 105.28 {I20} (1967Fo11), 105.302 {I4}
155GD2cG (1970Re08), 105.308 {I3} (1970Ra37), 105.30 {I3} (1975Kr04),
155GD2cG 105.309 {I1} (1986Sc25), 105.338 {I15} (1990Me15);
155GD2cG other: 105.315 {I15} (1969Me09)
155GD cG RI$65.7 {I65} (1967Bl11), 67.9 {I35} (1968Al01), 68.3 {I27}
155GD2cG (1970Re08), 68 {I4} (1971Ge11), 69.9 {I35} (1975Kr04),
155GD2cG 69.1 {I9} (1982Co05), 66.8 {I27} (1990Me15), 68.5 {I14} (1994Eg01),
155GD2cG 69.5 {I16} (1996Ch27); other: 64 (1959Ha07)
155GD L 107.5794 20 9/2+ B
155GD G 21.035 4 0.00152 18E2 2.60E3
155GD cG E$21.02 {I2} (1967Fo11), 21.030 {I10} (1986Sc25), 21.036 {I4}
155GD2cG (1990GoZS)
155GD cG RI$calculated by evaluator relative to I(86.5|g)=100 using internal
155GD2cG conversion electron intensities (1967Fo11, Table 3, p. 865) and
155GD2cG theoretical internal coefficient values
155GDS G LC=2.01E3 3$MC=471 7
155GDS G NC=104.1 15$OC=13.25 19$PC=0.00391 6
155GD L 117.9971 17 7/2+ B
155GD B 1.7 3 8.78 8
155GDS B EAV=35.50 26
155GD G 10.4178 12 0.0116 14M1+E2 0.033 +9-12 3.4E2 6
155GDS G LC=2.7E2 5$MC=59 11
155GDS G NC=13.5 24$OC=2.0 3$PC=0.0992 14
155GD cG E$adopted value
155GD cG RI$calculated by evaluator from intensity balance at 107.6 level
155GD cG MR$0.017 {I+5-8} calculated by evaluator for this dataset from
155GD2cG subshell ratios L1/L1=1.00, L2/L1=0.237 {I44},
155GD2cG L3/L1=0.062 {I23}, M/L=0.180 {I45}, M2/M1=0.153 {I139},
155GD2cG M3/M1=0.152 {I139} (1968Ba80, superseding 1967Fo11)
155GD G 31.444 7 0.023 5M1+E2 0.370 14 50 3
155GDS G LC=39.1 22$MC=9.1 6
155GDS G NC=2.03 12$OC=0.267 15$PC=0.00335 6
155GD cG E$31.55 {I10} (1970Re08), 31.444 {I7} (1986Sc25), 31.4 {I1} (1990GoZS);
155GD2cG other: 31.4 (1) (1969Me09)
155GD cG RI$0.03 {I2} (1970Re08), 0.023 {I5} (1990Me15);
155GD2cG other: 0.023 {I5} (1969Me09)
155GD G 57.9873 17 0.216 18E1 1.238
155GDS G KC=1.020 15$LC=0.1712 24$MC=0.0372 6
155GDS G NC=0.00834 12$OC=0.001181 17$PC=5.30E-5 8
155GD cG E$57.970 {I26} (1970Re08), 57.9805 {I20} (1970Ra37), 57.99 {I4}
155GD2cG (1975Kr04), 57.989 {I1} (1986Sc25), 57.986 {I30} (1990Me15);
155GD2cG other: 57.983 {I30} (1969Me09)
155GD cG RI$0.20 {I3} (1968Al01), 0.22 {I5} (1970Re08), 0.22 {I3} (1975Kr04),
155GD2cG 0.221 {I18} (1990Me15), 0.213 {I30} (1994Eg01);
155GD2cG other: 0.217 {I18} (1969Me09)
155GD L 146.0698 8 7/2- A
155GD B 0.72 7 8.83 5
155GDS B EAV=27.71 25
155GD G 86.0591 10 0.50 5M1+E2 -0.184 23 3.14
155GDS G KC=2.59 4$LC=0.435 16$MC=0.096 4
155GDS G NC=0.0219 9$OC=0.00331 11$PC=0.000192 3
155GD cG E$86.01 {I20} (1967Fo11), 86.062 {I23} (1970Re08), 86.062 {I5}
155GD2cG (1970Ra37), 86.03 {I7} (1975Kr04), 86.059 {I1} (1986Sc25);
155GD2cG other: 86.0 (1969Me05)
155GD cG RI$0.50 {I5} (1968Al01), 0.49 {I5} (1970Re08), 0.54 {I11} (1975Kr04)
155GD cG MR$0.19 {I4} (1975Kr04, |g|g(|q)) for this dataset. Since the |d
155GD2cG values for the other |DJ=1 transitions in the g.s. band are found
155GD3cG (1992Ku15, 1998St28) to be negative, the evaluator has assumed that
155GD4cG the sign of this one is negative also. This is confirmed by the
155GD4cG negative adopted from |g|g(|q) (1959De29, Coulomb Ex. dataset)
155GD G 146.0706 10 0.166 10E2 0.649
155GD cG E$146.061 {I5} (1970Re08), 146.04 {I10} (1974Kr04), 146.071 {I1}
155GD2cG (1986Sc25), 146.090 {I90} (1990Me15)
155GD cG RI$0.16 {I5} (1967Bl11), 0.19 {I2} (1970Re08), 0.14 {I2} (1975Kr04),
155GD2cG 0.167 {I10} (1990Me15); other: 0.169 {I9} (1969Me09)
155GDS G KC=0.398 6$LC=0.194 3$MC=0.0453 7
155GDS G NC=0.01014 15$OC=0.001360 19$PC=2.12E-5 3