150SM 150EU EC DECAY (12.8 H) 1968KU10,1965GU03 13NDS 201306
150SM H TYP=FUL$AUT=S. K. Basu, A. A. Sonzogni$CIT=NDS 114, 435 (2013)$
150SM2 H CUT=1-Apr-2013$
150SM c Some coincidence data were taken from 1974ShYQ.
150SM c 1968Ku10: sources of {+150}Eu (12.8 h) were made with the reaction
150SM2c {+150}Sm(d,2n) E=12~MeV. |g-ray energies, intensities were obtained
150SM3c with a 7-mm Ge(Li) detector with an energy resolution at 662~keV of
150SM4c 2.0~keV. |g|g-coincidence measurements were made with a resolving time
150SM5c of 90~ns. A table of ratios of reduced transition probabilities is
150SM6c given.
150SM c See also 1977Ho08.
150SM cL E$Evaluators have supplied level energies adjusted by means of a
150SM2cL least-squares method which takes into account all transitions and
150SM3cL recoil corrections.
150SM cL J$From adopted levels. |g|g(|q) consistent with these assignments.
150SM cE TI$Deduced from |g-ray intensity balance at each level.
150SM cG M$From adopted gammas.
150SM cG TI(D)$From relative ce intensities of 1961Ha23.
150SM cG RI(E)$The |g-ray intensity ratios for the following E2 transitions are
150SM2cG I|g(406):I|g(921):I|g(209)=100(6):8.0(6):0.94(12)(1986Pa14)
150SM cG RI,E$From 1968Ku10.
150SM cE E(Z)$E(|b{++})=1242 {I25} measured by 1965Gu03.
150EU P 41.7 10 0- 12.8 H 1 2259 6
150SM N 0.36 0.36 0.11 2 9.1
150SM cN NR$|g-ray intensity normalization was determined from the following
150SM2cN considerations: the 12.8-h {+150}Eu I|e, I|b{+-} branching was
150SM3cN determined from I(K| x ray)/I|b{+-}=0.10 {I2} (1965Gu03) using an |w(K)
150SM4cN of 0.928 and I|e/I|e(K)=1.18. I|b{+-}=89% {I2} and I|e=10.7% {I18}. The
150SM5cN I|b{++} to the g.s. of {+150}Sm can be deduced two ways. 1965Gu03
150SM6cN measured I|b{+-}/I|b{++}=250 (no uncertainty given) from which
150SM7cN I|b{++}=0.35%. If this branch is deduced from I|e/I|b{++} (obtained
150SM8cN from I(K), I(|g{+|+}) in table 1 of 1965Gu03), I|b{++}=0.54%. However,
150SM9cN I(|g{+|+})/I(334)|g of 1965Gu03 is almost twice that reported by
150SMacN 1962Ri05 and 1963Yo07, who appear to be in agreement with the value
150SMbcN 0.35%. Thus, there is a discrepancy in these
150SMcCN measurements which may be inherent in the values reported for
150SMdCN I(|g{+|+}). From I(334)|g/I(K| x ray) of 1965Gu03 and details of the
150SMeCN proposed decay scheme, one deduces the combined |b{++} and |e feeding
150SMfCN of the {+150}Sm g.s. to be |?6.8%, of which theory gives 0.6% as the
150SMgCN |b{++} component for an allowed transition. This value is adopted for
150SMhCN the |b{++} branch to {+150}Sm, since no appreciable |b{++} branch to
150SMiCN the excited states is indicated by theory. |e branches to the excited
150SMjCN states are deduced from |g-ray intensity balances. With this
150SMkCN normalization the intensity of the 334|g is 3.9% {I7} (1976Ba18).
150SM L 0.0 0+
150SM E 2264 250.66 186.2 177.5 9 6.9 19
150SMF E FLAG=Z
150SMS E EAV=579.3 27$CK=0.7617 12$CL=0.11094 18$CM+=0.03198 6
150SM L 333.88 9 2+
150SM G 333.9 1 100. 8 E2 0.0407 C
150SMS G KC=0.0321$LC=0.00669$MC=0.00148$NC+=0.00040
150SM E 0.005 3 0.6 4 9.5 10 0.6 4 1U
150SMS E EAV=450.6 27$CK=0.8279 2$CL=0.12694 6$CM+=0.03688 2
150SM L 740.38 12 0+
150SM G 406.5 1 71 6 E2 C
150SMF G FLAG=E
150SM G 740.4 5 E0 1.3
150SMF G FLAG=D
150SM cG M$1963Yo07 found no 740-keV photon. 1968Ku10 attribute all or most of
150SM2cG their 740 peak to summing. ce(K) reported by 1961Ha23.
150SM E 0.013 2 2.7 5 7.5 9 2.7 5
150SMS E EAV=253.8 27$CK=0.8358 2$CL=0.12378 5$CM+=0.03577 2
150SM L 1046.07 12 2+
150SM G 305.4 4 0.08 AP E2 0.0535
150SMS G KC=0.0417$LC=0.00918$MC=0.00203$NC+=0.00055
150SM G 712.2 1 3.3 3 E2+E0+M1 0.0091
150SMS G KC=0.0077$LC=0.001
150SM G 1046.2 3 0.21 5
150SM E 0.080 209.6 9 0.080 20 1U
150SMS E CK=0.8269 2$CL=0.13384 9$CM+=0.03921 3
150SM L 1165.70 11 1-
150SM G 425.3 3 0.20 4
150SM G 831.8 1 5.0 4 (E1) 0.00148 C
150SMS G KC=0.00126$LC=0.00016
150SM G 1165.7 2 6.5 6 E1 0.00078
150SMS G KC=0.00067
150SM E 0.43 8 8.0 9 0.43 8
150SMS E CK=0.8370$CL=0.12641 5$CM+=0.03663 2
150SM L 1193.74 19 2+
150SM G 860.1 5 0.23 6 E2+M1(+E0) 0.00347
150SMS G KC=0.00291$LC=0.00042
150SM G 1193.7 2 0.46 10 E2
150SM E 0.027 5 9.8 9 0.027 5 1U
150SMS E CK=0.8238 2$CL=0.1362 2$CM+=0.04002 4
150SM L 1255.49 15 0+
150SM G 209.4 1 0.55 8
150SMF G FLAG=E
150SM G 515.3 8 E0 0.7
150SMF G FLAG=D
150SM cG $Seen as highly converted transition by 1961Ha23.
150SM G 921.7 3 5.3 4 E2 C
150SMF G FLAG=E
150SM E 0.27 5 8.1 9 0.27 5
150SMS E CK=0.8361$CL=0.12706 5$CM+=0.03686 2
150SM L 1786.09 17 ( LE 3) ?
150SM cL E$a level at this energy was first proposed by 1965Gu03 and tentatively
150SM2cL assigned by 1968Ku10 on the basis of energy fits.
150SM cL J$the log| {Ift} value (8.0) calculated for electron capture to this
150SM2cL level is consistent with those for capture to other 0+ and 2+ levels in
150SM3cL {+150}Sm, suggesting that J for this level is |<3, assuming that J=(0)
150SM4cL for the g.s. of 12.8-h {+150}Eu.
150SM G 620.3 2 0.80 12
150SM G 740.4 5 ?
150SM G 1452.3 2 0.37 13
150SM E 0.050 108.2 9 0.050 10
150SMS E CK=0.8239 3$CL=0.13615 23$CM+=0.03997 8
150SM L 1963.30 16 1(-)
150SM G 917.7 6 1.1 2
150SM G 1223.0 2 5.0 4
150SM G 1629.4 3 1.45 19 C
150SM G 1963.0 3 2.9 3
150SM E 0.41 7 6.9 9 0.41 7
150SMS E CK=0.8097 8$CL=0.1467 6$CM+=0.04361 21