160HO 160ER EC DECAY 1990GO02 21NDS 202108
160HO H TYP=FUL$AUT=N. NICA$CIT=NDS 176, 1 (2021)$CUT=1-May-2021$
160HO D DATA SET UPDATED (JULY, 2004) BY CW REICH TO INCLUDE NEW Q VALUE, A
160HO2D RECOMPUTED LOG FT VALUE, AND A REVISED TI VALUE FOR THE 59.98
160HO3D ISOMERIC TRANSITION.
160HO c {+160}Er: from proton-induced spallation of tantalum at E(p)=640 MeV.
160HO2c Chemical separation. Electrostatic electron spectrometers, one set
160HO3c to |DE/E=0.011 and one operated at |DE=9 eV; HPGe detector of
160HO4c dimensions 0.30 cm{+2} by 0.6 cm and resolution=200 eV at 6.4 keV.
160HO5c Measured E(ce), Ice, E|g, I|g,
160HO6c I(L x ray).
160HO c Others: 2010VaZZ, 2006KaZX, 1982Vy06, 1973Al15, 1965Av03
160HO cL J From Adopted Levels
160HO cL T$From Adopted Levels unless noted otherwise
160HO DG CC$FROM BrIcc v2.3b (16-Dec-2014) 2008Ki07, "Frozen Orbitals" appr.
160HO DG MR$IF NO VALUE GIVEN IT WAS ASSUMED MR=1.00 FOR E2/M1,
160HO2DG MR=1.00 FOR E3/M2 AND MR=0.10 FOR THE OTHER MULTIPOLARITIES
160ER P 0.0 0+ 28.58 H 9 318 29
160ER cP QP$From 2021Wa16
160HO N 1.00 1.00 1.00 1.00
160HO cN NT$Based on deduced absolute intensity of 7.133|g (from measured I{-|g}
160HO2cN and theoretical |a value) equal to the measured
160HO2cN number of {+160}Er decays reported by 1990Go02 (the experimental ratio
160HO2cN of intensities quoted therein is 0.9 {I2})
160HO PN 3
160HO L 0.0 5+ 25.6 M 3
160HO L 59.98 3 2- 5.02 H 5 M1
160HO2 L %EC+%B+=23.8 20$%IT=76.2 20$
160HO cL %EC+%B+,%IT$weighted average of %IT values (measured by almost the same
160HO2cL group of authors by varied methods): 73.6 {I52} (2002Ad34), 73.3 {I30}
160HO2cL (2003KaZR), 77.9 {I20} (2006KaZX) (the smallest measured unc was
160HO2cL adopted); other: 65 {I3} (1974Al28).
160HO cL $Since this level has %|e+%|b{++}=23.8 {I20}, there is an
160HO2cL imbalance in the listed intensities into and out of it. Further, this
160HO3cL level has T{-1/2}=5.02 h, with the result that the intensity of the
160HO4cL radiations deexciting it will exhibit a time dependence relative to
160HO5cL that of the feeding transition.
160HO G 59.98 3 0.082 11E3(+M4) 0.017 LT 930 16 76.2 20
160HOS G K/T=0.00211 8$L/T=0.749 9$M/T=0.198 5
160HOS G N/T=0.0450 11$O/T=0.00510 12$P/T=3.8E-6 7
160HOS G KC=1.97 7$LC=698 12$MC=184 4
160HOS G NC=41.9 8$OC=4.75 9$PC=0.0035 7
160HO cG E$from 1966Av03
160HO cG RI$calculated from I(|g+ce)=76.2 {I20} using |a(E3)=930 {I16}.
160HO2cG (If |d=0, one gets 0.082 {I10} with|a(E3)=923 {I14})
160HO2cG Note that this value of I(|g+ce) is smaller than that of the feeding
160HO3cG |g, because of the |e+|b{++} branch from this level.
160HO cG M$from measured subshell ratios (1966Av03)
160HO cG MR$%M4<0.03 (2010VaZZ, from |a(K)exp)
160HO cG EKC$1.83 {I17} {I7}
160HO cG EKC$from 2010VaZZ,
160HO cG $from comparison of
160HO2cG Ho K x rays and 59.98|g intensities in the |g spectrum of {+160}Ho
160HO2cG IT decay (5.02 h) (uncertainties are stat and syst in this order)
160HO L 67.11 4 1+ 28 NS 2
160HO cL T$from 2006KaZX by measuring the retarded KX(Ho)-|g coincidences with
160HO2cL respect to the time decrease in the 7.1|g intensity. Other: 30 ns {I8}
160HO2cL (2005KaZY, obtained by the same group)
160HO E 90 AP 4.7 AP
160HOS E CK=0.771 13$CL=0.174 9$CM+=0.054 4
160HO cE IE from |a(E1) and measured L| x ray/|g intensity ratio,
160HO2cE 1990Go02 estimate I(|g+ce)(7.133 |g), relative to number of {+160}Er
160HO3cE decays, to be 0.9 {I2}, which can be consistent with the expectation
160HO4cE that all of the |e transitions feed the 67 level but also is compatible
160HO4cE with |? 10% of the feeding to 176 level
160HO G 7.133 10 5.43 9 E1(+M2) 0.0006 LT 17.4 3 100
160HOS G M/T=0.774 7
160HOS G N/T=0.159 3$O/T=0.0125 3$P/T=0.000205 5
160HOS G MC=14.27 22
160HOS G NC=2.93 5$OC=0.230 4$PC=0.00379 8
160HO cG RI$calculated from I(|g+ce)=100 using |a(E1)=17.3 {I3}.
160HO cG MR$from 1990Go02 (at the 99% confidence level)
160HO cG CC 1990Go02 report the following measured values of ratios of
160HO2cG conversion coefficients for the 7.133 |g: |a(M1)exp/|a(M2)exp=0.81
160HO3cG {I8}; |a(M1)exp/|a(M3)exp=0.39 {I4}; |a(M4)exp/|a(M3)exp=0.06 {I6};
160HO4cG |a(M2)exp/|a(M5)exp=0.71 {I7}; |a(N1)exp/|a(N3)exp=0.48 {I12};
160HO5cG |a(N1)exp/|a(N4,5)exp=0.57 {I14}; |a(N6,7)/|a(N1)exp=0.20 {I5};
160HOxcG |a(N6,7)exp/|a(O2,3)exp=0.29 {I7}
160HO L 175.6 10 (1-) ?
160HO cL E,J$level introduced by 2010VaZZ based on |g assumed to decay
160HO2cL to 67, 1+ level with J|p value postulated by authors; because of the
160HO2cL lack of evidence this level is questionable
160HO E 10 AP 5.0 AP 10 AP ?
160HOS E CK=0.68 8$CL=0.24 6$CM+=0.078 21
160HO cE $Because of the lack of evidence on the level and its decaying |g
160HO2cE the |e population is also questionable
160HO cE IE$difference of 100% and the estimated feeding of 67, 1- level
160HO G 108.5 10 [E1,M2] 0.43 18 10 AP ?
160HOS G K/T=0.241 74$L/T=0.048 25$M/T=0.0109 60
160HOS G N/T=0.0025 14$O/T=3.5E-4 20$P/T=1.62E-5 96
160HOS G KC=0.35 14$LC=0.069 36$MC=0.0157 84
160HOS G NC=0.0036 20$OC=5.0E-4 28$PC=2.3E-5 14
160HO cG E,RI$|g ray postulated by 2010VaZZ as observed in a "fresh" spectrum
160HO2cG of {+160}Er source with no evidence, reason for which its existence is
160HO2cG questionable (|DE|g is adopted by evaluator and I|g follows from the
160HO2cG |e feeding of the parent level)