80GA 80ZN B- DECAY (0.54 S) 2014LI32,1987WI13,1986EK01ENSDF 201408
80GA H TYP=FUL$AUT=BALRAJ SINGH$CIT=ENSDF$CUT=31-AUG-2014$
80GA H TYP=FUL$AUT=BALRAJ SINGH$CIT=NDS 105, 223 (2005)$CUT=22-Jun-2005$
80GA c 2014Li32: {+80}Zn isotope produced in U(p,F),E=1 GeV; and in U(n,F),
80GA2c E=fast neutrons from a proton beam hitting a neutron converter.
80GA3c Resonant laser ionization was used to produce pure Zn ion beam, then
80GA4c accelerated to 40 keV at ISOLDE-CERN facility. Measured E|g, I|g, |b
80GA5c particles, |g|g-coin, level half-life by |b|g(t). For |g rays, two HPGe
80GA6c detectors and two LaBr{-3}(Ce) crystals were used; and for |b
80GA7c particles, a plastic scintillator was used. Deduced levels, J,|p, level
80GA8c half-life, multipolarity, beta feedings, log| {Ift} values.
80GA c 1987Wi13 (also 1986Gi07): {+80}Zn produced by mass separation of A=80
80GA2c fission fragments from {+235}U(n,F). Measured E|g, I|g, |g|g, |b|g,
80GA3c T{-1/2} and Q(|b{+-}) value. A total of 28 |g rays reported by
80GA4c 1987Wi13, two of which were unplaced. The 0.55-s activity was
80GA5c assigned to {+80}Zn and not to an isomer of {+80}Ga, based on several
80GA6c strong arguments given by 1987Wi13. The |g spectrum was heavily
80GA7c contributed by impurities from decays of {+80}Ga, {+80}Ge and {+80}As
80GA c 1986Ek01: {+80}Zn produced by mass separation of fission fragments
80GA2c from {+235}U(n,F). Measured E|g, I|g, |g|g, |b|g, T{-1/2} and
80GA3c Q(|b{+-}). A total of 13 |g rays were reported, nine of which were
80GA4c assigned in a decay scheme; four of the |g rays were tentative.
80GA5c The |g spectrum was contributed by A=80 isobaric activities
80GA c 1981Ru07, 1981Ho24: thermo-chromatographic technique used to identify
80GA2c the isotope produced in neutron-induced fission of {+235}U
80GA c Others: 1988BaZX (yield measurement), 1988Kr08 (theory),
80GA2c 1991Kr15 (T{-1/2} and %|b{+-}n measurement)
80GA d Theory: 2005Ni02
80GA cB IB,LOGFT$In evaluator's opinion, all values should be considered as
80GA2cB approximate since in the present level scheme there is a gap of about
80GA3cB 4.2 MeV between the Q(|b{+-}) value and the highest known level in
80GA4cB {+80}Ga at 3380 keV. There may be additional unobserved transitions
80GA5cB which could affect the quoted |b feedings and associated log| {Ift}
80GA6cB values, especially those for weakly fed levels
80GA cB $ Q(|b{+-}) value deduced from several |b-gated singles |g-ray
80GA2cB spectra (1987Wi13) and |b|g (1986Ek01)
80GA cG $Following tentative |g rays with E|g(I|g) reported by 1986Ek01 are
80GA2cG omitted here for lack of confirmation in later studies: 123.0 {I3}
80GA3cG (4.3 {I15}), 527.8 {I3} (12.7 {I20}), 758.2 {I3} (12.3 {I30}).
80GA4cG 1987Wi13 reported I|g<12 for 123.0|g, and 5.6 for 527.8|g but with
80GA5cG probable assignment to {+80}Ga decay
80GA cG E,RI$From 2014Li32. Data from 1987Wi13 and 1986Ek01 are generally
80GA2cG consistent but are less complete. The source purity, in the form of
80GA3cG extracted {+80}Zn bean, is the best in 2014Li32 of all the studies.
80GA4cG For this reason all |g-ray data are adopted from this paper, even
80GA5cG though some of the E|g values are given to a higher precision
80GA6cG in 1987Wi13. In 2014Li32, strong |g transitions were measured using
80GA7cG singles |g spectra and weaker lines from |g|g-coin spectra.
80GA8cG Statistical and peak fitting uncertainties are assigned
80GA cG E(X)$From 2014Li32 only
80GA cL $Levels of 1863 and 2478 keV in 1986Ek01, and 312, 387 and 486 keV
80GA2cL in 1987Wi13 have been omitted. The |g rays associated with these
80GA3cL levels have been reassigned to other levels in 2014Li32 based on
80GA4cL their extensive |g|g-coin data. Levels at 685, 712, 889, 964, 1171,
80GA5cL 1334, 1427, 1503, 2070 and 2655 keV proposed in 1987Wi13 and 1986Ek01
80GA6cL have been confirmed by 2014Li32, but all pushed upwards by 22.5 keV,
80GA7cL based on discovery of {+80}Ga isomer by 2013Ve13
80GA cL E$From least-squares fit to E|g data, reduced |h{+2}=0.76
80GA cL J$From Adopted Levels, unless otherwise stated
80GA CL J(B)$From allowed LOGFT value from 0+ parent
80GA cL T(A)$From Adopted Levels
80GA cL $The level scheme is from 2014Li32, based on previous level schemes
80GA2cL proposed by 1987Wi13 and 1986Ek01 from about 25 |g rays, except that
80GA3cL a large number of weak |g rays are identified by 2014Li32 from
80GA4cL extensive |g|g-coin data, and that most levels in 1987Wi13 and
80GA5cL 1986Ek01 are now higher by 22.5 keV, the location of 1.3-s isomer
80GA6cL proposed by 2013Ve03 and its energy by 2014Li32.
80GA cL $Levels at 1863 and 2478 keV in 1986Ek01, and 312, 386 and 485 keV in
80GA2cL 1987Wi13 are omitted here since no evidence was found for such levels
80GA3cL in the extensive |g|g-coin data of 2014Li32. The |g rays from these
80GA4cL levels are now assigned to other levels
80ZN P 0 0+ 0.54 S 2 7575 4
80ZN cP T$From {+80}Zn Adopted Levels
80ZN cP QP$From 2012Wa38
80GA N 0.416 21 1.0 1.0
80GA cN NR$Deduced from summed |g transition intensity to g.s.+22.45
80GA2cN level=99.0 {I5}, allowing for %|b{+-}n=1.0 {I5} (from {+80}Ga Adopted
80GA3cN Levels. 2014Li32 give normalization factor of 0.41 {I6}
80GA PN 3
80GA L 0.0 6(-) 1.9 S 1 A
80GA L 22.45 10 3(-) 1.3 S 2 AM
80GA2 L %B- AP 100$ %B-N=?$ %IT=?
80GA L 97.20 8 (4)
80GA G 74.8 1 10.8 11 D 0.154
80GA cG RI$uncertainty of 0.2 (1.9%) in 2014Li32 seems too low in view of
80GA2cG uncertainties assigned to other |g rays. Evaluator assigns 10%
80GA3cG uncertainty
80GA DG $EG=74.7 3, IG=9.6 24 (1987Wi13), placed from a 312 level; a second
80GA2DG component with IG AP 2.6 was unplaced
80GA CG M$from ECC LE 0.40 (2014Li32); estimated from intensity balance
80GA2cG considerations and |g|g coincidence intensities
80GA cG CC$value taken from BrIcc code to overlap M1 and E1
80GA L 403.48 3
80GA G 306.4 1 0.2 1 X
80GA G 403.47 3 4.3 5
80GA DG $EG=403.51 15, IG=6.5 11 (1987Wi13), placed from a 889 level
80GA L 577.42 8
80GA B 0.7 4 6.6 3
80GAS B EAV=3215.1 20
80GA cB IB$ no |b feeding given in 2014Li32
80GA G 174.0 1 5.6 6
80GA DG $EG=174.04 8, IG=7.7 8 (1987Wi13), placed from a 485 level
80GA G 480.1 1 0.7 1 X
80GA G 577.7 2 0.2 1 X
80GA L 707.90 11 (1+) 18.3 NS 5
80GA cL T$from |b(685|g)(t) (2014Li32)
80GA B 2.2 19 6.1 4
80GAS B EAV=3151.7 20
80GA G 685.4 1 36 4 (M2)
80GA DG $EG=685.60 5, IG=34.0 21 (1987Wi13), placed from a 686 level
80GA DG $EG=685.6 2, IG=30 3 (1986Ek01), placed from a 686 level
80GAB G BM2W=0.60 2 (2014Li32)
80GA L 734.76 10
80GA B 7 LT 5.5 GT ?
80GAS B EAV=3138.6 20
80GA dB IB$compiler obtains 1 {I6}; 2014Li32 give 1 {I5}
80GA G 712.3 1 100 10
80GA DG $EG=712.53 5, IG=100 5 (1987Wi13), placed from a 712 level
80GA DG $EG=712.5 2, IG=100 5 (1986Ek01), placed from a 712 level
80GA L 911.39 10
80GA B 1.1 6 6.3 3
80GAS B EAV=3052.7 20
80GA cB IB$3.8 {I6} in 2014Li32 is in disagreement
80GA G 176.6 1 10.1 10
80GA DG $EG=176.71 7, IG=11.2 8 (1987Wi13), placed from a 889 level
80GA DG $EG=176.7 3, IG=8.0 20 (1986Ek01), tentative unplaced
80GA G 814.2 1 1.6 2 X
80GA G 888.9 1 5.7 6
80GA DG $EG=889.23 19, IG=6.9 13 (1987Wi13), placed from a 889 level
80GA L 951.34 12 (1-,2-)
80GA B 4.5 7 5.7 1
80GAS B EAV=3033.3 20
80GA dB IB$4.4 {I6} (2014Li32)
80GA G 243.5 1 0.9 2 X
80GA G 928.8 2 13.6 15
80GA DG $EG=928.86 9, IG=16.6 15 (1987Wi13), unplaced
80GA L 987.20 10 (1-,2-)
80GA B 4.3 14 5.7 2
80GAS B EAV=3015.9 20
80GA dB IB$4 {I2} (2014Li32)
80GA G 964.8 2 32 3
80GA DG $EG=964.93 6, IG=34.5 24 (1987Wi13), placed from a 964 level
80GA DG $EG=964.5 2, IG=36 3 (1986Ek01), placed from a 964 level
80GA L 990.15 11
80GA B 0.9 2 6.4 1
80GAS B EAV=3014.5 20
80GA G 282.21 5 4.1 4
80GA DG $EG=282.05 13, IG=4.6 6 (1987Wi13), placed from a 1171 level
80GA L 1141.79 11
80GA B 1.3 3 6.2 1
80GAS B EAV=2940.7 20
80GA dB IB$1.2 {I2} (2014Li32)
80GA G 151.7 1 0.2 LT X ?
80GA G 154.7 1 0.3 1 X
80GA G 190.5 1 2.3 2 X
80GA G 406.9 2 0.8 2 X
80GA G 433.9 1 2.2 4 X
80GA L 1152.79 11
80GA B 0.08 6 7.4 4
80GAS B EAV=2935.4 20
80GA cB IB$no |b feeding given in 2014Li32
80GA G 575.3 1 0.4 1 X
80GA L 1193.90 10
80GA B 0.5 4 6.5 4 ?
80GAS B EAV=2915.4 20
80GA cB IB$no |b feeding given in 2014Li32
80GA G 203.6 1 0.3 1 X
80GA G 282.7 1 0.6 2 X
80GA G 1171.5 2 3.9 5
80GA DG $EG=1171.5 5, IG=4.7 19 (1987Wi13), placed from a 1171 level
80GA L 1213.95 10
80GA G 636.6 1 4.5 5
80GA DG $EG=636.7 3, IG=3.2 10 (1987Wi13), unplaced
80GA G 1116.7 2 9.0 10
80GA DG $EG=1117.01 20, IG=9.8 20 (1987Wi13), placed from a 1503 level
80GA L 1290.32 12
80GA B 0.8 4 6.3 2
80GAS B EAV=2868.5 20
80GA cB IB$no |b feeding given in 2014Li32
80GA G 1267.9 2 5.9 7 X
80GA L 1300.39 13
80GA G 723.2 8 0.2 LT X ?
80GA G 1203.3 2 1.1 2 X
80GA L 1356.47 10
80GA B 0.7 7 6.1 GT ?
80GAS B EAV=2836.4 20
80GA cB IB$2.0 {I5} in 2014Li32 is in disagreement
80GA G 444.9 1 0.8 1 X
80GA G 621.8 1 1.7 3 X
80GA G 1334.0 2 9.9 11
80GA DG $EG=1334.09 18, IG=12.4 17 (1987Wi13), placed from a 1334 level
80GA L 1449.92 10 1+ B
80GA B 34 4 4.6 1 C
80GAS B EAV=2791.0 20
80GA CB E$5490 140 from (715|g)(5490|b) (1986Ek01)
80GA dB IB$33 {I4} (2014Li32)
80GA G 93.4 1 3.2 6
80GA DG $EG=93.96 8, IG=3.7 4 (1987Wi13), placed from a 1427 level
80GA G 159.5 1 1.2 3 X
80GA G 308.3 1 0.4 1 X
80GA G 459.9 1 0.2 LT X ?
80GA G 462.72 2 11.1 11
80GA cG RI$uncertainty of 0.1 (0.9%) in 2014Li32 seems too high in view of
80GA2cG uncertainties assigned to other strong |g rays. Evaluator assigns 5%
80GA3cG uncertainty
80GA DG $EG=462.99 7, IG=12.0 12 (1987Wi13), placed from a 1427 level
80GA DG $EG=462.8 5, IG=9.1 15 (1986Ek01), placed from a 1427 level
80GA G 715.2 1 77 8
80GA cG RI$uncertainty of 21 (27%) in 2014Li32 seems too high in view of
80GA2cG uncertainties assigned to other strong |g rays. Evaluator assigns 10%
80GA3cG uncertainty
80GA DG $EG=715.40 5, IG=75 4 (1987Wi13), placed from a 1427 level
80GA DG $EG=715.3 2, IG=82 5 (1986Ek01), placed from a 1427 level
80GA G 742.0 1 21 2
80GA DG $EG=742.36 6, IG=21.8 16 (1987Wi13), placed from a 1427 level
80GA DG $EG=742.6 3, IG=14.3 20 (1986Ek01), placed from a 1427 level
80GA G 1427.5 2 3.8 8 [M2] X
80GA L 1526.06 10
80GA B 1.3 13 5.8 GT ?
80GAS B EAV=2754.0 20
80GA dB IB$1.3 {I15} (2014Li32)
80GA G 75.8 1 0.2 LT X ?
80GA G 169.6 1 1.4 3
80GA DG $EG=169.70 17, IG=2.3 5 (1987Wi13), placed from a 1503 level
80GA G 225.7 1 1.2 2 X
80GA G 312.13 5 12.4 2
80GA DG $EG=312.06 15, IG=15.3 14 (1987Wi13), placed from a 312 level
80GA G 332.17 5 2.6 4
80GA DG $EG=332.47 20, IG=2.8 6 (1987Wi13), placed from a 1503 level
80GA G 373.2 1 0.2 1 X
80GA G 538.87 5 1.3 2 X
80GA G 614.66 5 13.3 4
80GA DG $EG=614.58 7, IG=16.0 15 (1987Wi13), placed from a 1503 level
80GA DG $EG=614.9 3, IG=12.5 20 (1986Ek01), placed from a 2478 level
80GA G 791.3 1 4.0 6
80GA DG $EG=791.53 23, IG=3.5 10 (1987Wi13), placed from a 1503 level
80GA G 818.2 1 1.1 3 X
80GA G 1503.6 3 9.6 11
80GA DG $EG=1503.94 12, IG=11.8 14 (1987Wi13), placed from a 1503 level
80GA L 2044.42 11
80GA B 0.5 3 6.3 3
80GAS B EAV=2502.1 20
80GA dB IB$0.6 {I3} (2014Li32)
80GA G 518.3 1 1.0 2 X
80GA G 594.9 1 0.3 1 X ?
80GA G 688.0 1 1.8 3 X
80GA G 1057.3 3 0.6 2 X
80GA G 2021.8 3 1.3 3 X
80GA L 2092.21 10 1+ B
80GA B 21.6 18 4.61 4 C
80GAS B EAV=2478.9 20
80GA CB E$5710 200 from (642|g)(5710|b) (1986Ek01)
80GA dB IB$21 {I1} (2014Li32)
80GA G 566.20 5 10 1
80GA DG $EG=566.37 8, IG=10.0 11 (1987Wi13), placed from a 2070 level
80GA G 642.3 1 30 3
80GA DG $EG=642.21 5, IG=32.0 21 (1987Wi13), placed from a 2070 level
80GA DG $EG=642.2 3, IG=22 3 (1986Ek01), placed from a 2070 level
80GA G 735.6 1 2.2 4
80GA DG $EG=735.87 24, IG=3.4 10 (1987Wi13), placed from a 2070 level
80GA G 802.0 1 0.8 2 X
80GA G 878.2 2 1.0 2 X
80GA G 950.5 2 1.3 3 X
80GA G 1104.9 2 5.4 7 X
80GA G 1357.2 2 2.1 4 X
80GA G 1384.3 2 1.4 3 X
80GA L 2560.40 12 1+ B
80GA B 7.4 7 4.90 5
80GAS B EAV=2251.7 20
80GA dB IB$7.2 {I6} (2014Li32)
80GA G 468.3 1 2.2 6 X
80GA G 1034.3 2 9.2 10 X
80GA G 1110.3 2 1.8 6 X
80GA G 1366.4 2 1.0 4 X
80GA G 1418.4 2 0.8 1 X
80GA G 1570.2 3 1.6 2 X
80GA G 1573.5 3 0.4 2 X
80GA G 1608.8 3 0.2 LT X ?
80GA G 1825.5 3 0.7 2 X
80GA L 2676.94 12 1+ B
80GA B 13.6 12 4.59 5
80GAS B EAV=2195.2 20
80GA dB IB$13 {I1} (2014Li32)
80GA G 632.5 1 3.5 4 X
80GA G 1150.9 2 22 2
80GA DG $EG=1151.15 8, IG=29.2 22 (1987Wi13), placed from a 2655 level
80GA DG $EG=1151.0 3, IG=14.1 20 (1986Ek01), placed from a 1863 level
80GA G 1226.9 2 3.2 8 X
80GA G 1320.6 2 2.0 5 X
80GA G 1386.6 2 1.9 4 X
80GA G 1726.5 3 0.2 LT X ?
80GA L 2822.11 16 (1+)
80GA B 2.5 4 5.3 1
80GAS B EAV=2124.9 20
80GA dB IB$2.4 {I3} (2014Li32)
80GA G 1296.2 2 1.7 6 X
80GA G 1372.0 2 1.6 3 X
80GA G 1834.9 3 2.6 2 X
80GA G 1871.3 3 0.2 LT X ?
80GA L 3329.5 4
80GA B 0.33 9 5.9 1
80GAS B EAV=1879.3 20
80GA dB IB$0.3 {I1} (2014Li32)
80GA G 2378.1 3 0.8 2 X
80GA L 3380.0 4
80GA B 0.21 5 6.1 1
80GAS B EAV=1854.9 20
80GA dB IB$0.21 {I4} (2014Li32)
80GA G 2428.6 3 0.5 1 X