73GA 73ZN B- DECAY (24.5 S) 2017VE05,1983RU06 19NDS 201908
73GA H TYP=FUL$AUT=BALRAJ SINGH and JUN CHEN$CIT=NDS 158, 1 (2019)$
73GA2 H CUT=16-May-2019$
73GA c 2017Ve05: {+73}Zn ions were produced by the collision of 1.4 GeV
73GA2c protons on the neutron converter of a UC{-x} target at the ISOLDE-CERN
73GA3c facility. Fragments were separated and selected by a magnetic
73GA4c high-resolution mass separator (HRS). |g rays were detected with two
73GA5c HPGe detectors for |g-ray identification and with two LaBr{-3}(Ce)
73GA6c crystals for fast-timing; |b particles were detected with an ultrafast
73GA7c plastic scintillator. Measured E|g, I|g, E|b, |g|g-coin, |b|g-coin,
73GA8c |b|g|g-coin, |g(t), |b|g(t), |b|g|g(t). Deduced levels, T{-1/2}, |b-
73GA9c decay branching ratios, log {Ift}, |g transition strengths. Comparisons
73GAac with theoretical calculations.
73GA c 1983Ru06: {+73}Zn source was produced by bombarding a 23 mg/cm{+2}
73GA2c {+nat}W target with a 9 MeV/nucleon {+76}Ge beam from the UNILAC
73GA3c accelerator at GSI. |g rays were detected with two Ge detectors and
73GA4c |b particles were detected with a plastic scintillator. Measured E|g,
73GA5c I|g, E|b, |g|g-coin, |b|g-coin, |b|g(t). Deduced levels, J, |p,
73GA6c |b-decay branching ratios, log {Ift}. Comparisons with available data.
73GA c Others:
73GA c 2010Di14: re-analyzed data from the measurement by 2009Va01 for {+73}Zn
73GA2c decay, which is not reported in 2009Va01.
73GA c 1972Er05: measured E|g, I|g, E|b, |b|g-coin, |b(t). Deduced parent
73GA2c T{-1/2}
73GA c The total average radiation energy of 4113 keV {I98} calculated using
73GA2c the RADLIST code agrees well the expected value of Q(|b{+-})=4105.9 keV
73GA3c {I25} (2017Wa10) indicating the completeness of the decay scheme.
73GA cB IB$From |g-ray intensity imbalance at each level except for I|b(g.s.
73GA2cB doublet)=86.6 {I30} which is deduced by 2017Ve05 based on known
73GA3cB absolute intensities of the most intense transitions (325.7|g, 739.4|g,
73GA4cB and 767.8|g) in {+73}Ge from the adopted dataset of {+73}Ga |b decay in
73GA5cB ENSDF (2004 update; remain unchanged in current update), with the
73GA6cB observed {+73}Zn activity corrected for saturation using known T{-1/2}
73GA7cB of {+73}Ga for each implantation pulse
73GA cG E,RI$From 2017Ve05, unless otherwise noted.
73GA cG E(B)$Final level could be the g.s. and/or closely-spaced level at
73GA2cG <0.3 keV according to data in 2017Ve05. In the least-squares fitting
73GA3cG procedure, the final level is assumed to be at 0.15 keV {I15} to
73GA4cG cover the range up to 0.3 keV
73GA cL E$From a least-squares fit to |g-ray energies for levels populated in
73GA2cL |g-ray studies. Several ground-transitions could decay to either the
73GA3cL g.s. or the level at <0.3 keV. In the fitting procedure final level
73GA4cL energy is assumed as 0.15 keV {I15} to cover the range up to 0.3 keV
73GA cL E(Y)$Levels proposed by 2017Ve05
73GA cL E(A)$Existence of a level near the g.s. is deduced from the observed
73GA2cL Doppler-broadening of 199.2|g from the 199.2, 5/2- level in Coulomb
73GA3cL excitation (2010Di14), which restricts the lifetime of the 5/2- level
73GA4cL considerably smaller than 3.5 ns (maximum time-of-flight between target
73GA5cL and detector) consistent with the lifetime=3.3 ps from Weisskopf
73GA6cL estimate for a pure 199-keV M1 transition but not with 13 ns {I2} from
73GA7cL measured B(E2)(W.u.)=11 {I2} for the assumption of a pure E2 to 1/2-
73GA8cL g.s. Energy of the closely-spaced level near the g.s. is estimated
73GA9cL as <0.3 keV from 2017Ve05 in {+73}Zn |b{+-} decay based on a search for
73GAAcL energy differences between |g cascades deexciting the same level but
73GABcL proceeding through distinct paths, and also based on a search for
73GACcL doublets in |g-ray spectra. The energy of this level is also estimated
73GADcL by 2010Di14 as 0.4 keV {I4} (or <0.8 keV) using the approach based on
73GAEcL energy differences between |g cascades.
73GA cL J$From Adopted Levels. Assignments adopted only from this dataset are
73GA2cL also noted separately.
73GA cL T$From |b|g|g(t) in 2017Ve05 using the Advanced Time-Delayed method
73GA2cL with an ultrafast plastic scintillator and LaBr{-3}(Ce) detector
73ZN P 0.0 1/2- 24.5 S 2 4105.9 25
73ZN cP J,T$From Adopted Levels of {+73}Zn, where half-life is from
73ZN2cP measurement by 2017Ve05
73ZN cP QP$From 2017Wa10
73GA N 0.066 15 1.0
73GA cN NR$From |SI(|g to g.s. doublet)=100-I|b(g.s. doublet)=13.4 {I30}
73GA2cN assuming negligible contributions from conversion electrons, with
73GA3cN I|b(g.s. doublet)=86.6 {I30}, deduced by 2017Ve05 based on known
73GA4cN absolute intensities of the most intense transitions (325.7|g, 739.4|g,
73GA5cN and 767.8|g) in {+73}Ge from the adopted dataset of {+73}Ga |b decay in
73GA6cN ENSDF (2004 update; remain unchanged in current update), with the
73GA7cN observed {+73}Zn activity corrected for saturation using known T{-1/2}
73GA8cN of {+73}Ga for each implantation pulse
73GA PN 4
73GA G 2343.6 3 2.4 2
73GA cG RI$other: 2.3 {I4} (1983Ru06)
73GA L 0.0 1/2- A
73GA B 86.6 30 5.10 2
73GAS B EAV=1812.1 12
73GA cB E$end-point energy of the detected |b{+-} radiation is 4700 {I200}
73GA2cB (1972Er05), not from a normal Kurie plot, see 1984Be10. 1984Be10 quote
73GA3cB E|b|?4500 from data of 1972Er05 if a Kurie plot is used
73GA cB IB$deduced by 2017Ve05 for the doublet of 0.0, 1/2- and 0.15 keV, 3/2-.
73GA2cB Other: 89 deduced by 1983Ru06 from comparison of single |b-rays and
73GA3cB |b-coincident |g-rays assuming a 100% branch of the 450-keV transition
73GA4cB following {+73}Cu decay
73GA L 0.3 LT 3/2- A
73GA cL E$from 2017Ve05
73GA L 198.65 20 5/2-
73GA B 0.10 4 7.9 2
73GAS B EAV=1716.3 12
73GA G 198.4 2 2.8 2 B
73GAF G FL=0.3
73GA L 217.69 10 3/2- 47 PS 6
73GA B 5.6 14 6.2 1
73GAS B EAV=1707.2 12
73GA G 217.8 2 100 3 B
73GAF G FL=0.0
73GA cG E$weighted average of 217.4 {I2} (2017Ve05), 217.9 {I2} (2010Di14) and
73GA2cG 218.1 {I2} (1983Ru06)
73GA cG RI$from 1983Ru06. Other: 100 {I5} from 2017Ve05
73GA L 495.93 18 5/2-,7/2- 22 PS 6
73GA B 0.05 14 8.1 13
73GAS B EAV=1573.2 12
73GA G 278.1 3 1.8 2
73GA cG E$weighted average of 277.9 {I3} (2017Ve05) and 278.4 {I4} (1983Ru06)
73GA cG RI$weighted average of 2.1 {I3} (2017Ve05) and 1.6 {I2} (1983Ru06)
73GA G 297.3 2 0.2 1
73GA G 495.7 2 26.4 19 B
73GA cG E$weighted average of 495.6 {I1} (2017Ve05), 496.2 {I2} (2010Di14) and
73GA2cG 495.6 {I3} (1983Ru06)
73GAF G FL=0.3
73GA cG RI$weighted average of 28.4 {I14} (2017Ve05) and 24.7 {I13} (1983Ru06)
73GA L 911.03 18 3/2- 28 PS LE
73GA B 1.8 5 6.3 1
73GAS B EAV=1374.0 12
73GA G 415.2 2 2.0 3
73GA cG E$weighted average of 415.2 {I2} (2017Ve05) and 415.2 {I4}
73GA2cG (1983Ru06)
73GA cG RI$unweighted average of 2.3 {I1} (2017Ve05) and 1.7 {I2}
73GA2cG (1983Ru06)
73GA G 693.4 1 7.0 7
73GA cG E$weighted average of 693.4 {I1} (2017Ve05), 693.3 {I3} (2010Di14) and
73GA2cG 693.1 {I3} (1983Ru06)
73GA cG RI$unweighted average of 7.7 {I4} (2017Ve05) and 6.3 {I4}
73GA2cG (1983Ru06)
73GA G 910.8 3 31.8 13 B
73GAF G FL=?
73GA cG E$unweighted average of 910.6 {I1} (2017Ve05), 911.4 {I2} (2010Di14)
73GA2cG and 910.5 {I4} (1983Ru06)
73GA cG RI$weighted average of 31.6 {I16} (2017Ve05) and 31.9 {I13}
73GA2cG (1983Ru06)
73GA L 1113.6 3 1/2-
73GA B 0.32 8 6.9 1
73GAS B EAV=1277.1 12
73GA G 1113.5 3 5.1 4 B
73GAF G FL=?
73GA cG E$weighted average of 1113.6 {I2} (2017Ve05) and 1113.0 {I4}
73GA2cG (1983Ru06); unplaced in 1983Ru06
73GA cG RI$weighted average of 5.3 {I4} (2017Ve05) and 4.9 {I5}
73GA2cG (1983Ru06)
73GA L 1393.07 21 (5/2-) Y
73GA B 0.013 15 8.1 5
73GAS B EAV=1144.2 12
73GA G 482.2 2 0.1 1
73GA G 1194.2 4 0.2 1
73GA G 1392.9 3 0.9 1 B
73GAF G FL=?
73GA L 1692.85 20 (1/2-,3/2-)
73GA B 0.77 19 6.2 1
73GAS B EAV=1002.5 12
73GA G 579.3 3 0.1 1
73GA G 781.7 2 1.0 1
73GA G 1196.9 3 5.4 8
73GA G 1475.1 3 2.6 2
73GA cG E$weighted average of 1475.2 {I2} (2017Ve05) and 1474.3 {I5}
73GA2cG (1983Ru06)
73GA cG RI$weighted average of 2.6 {I2} (2017Ve05) and 2.2 {I5}
73GA2cG (1983Ru06)
73GA G 1493.5 6 0.1 1 ?
73GA G 1692.8 2 2.7 4 B
73GAF G FL=?
73GA cG E$weighted average of 1692.8 {I2} (2017Ve05) and 1692.5 {I6}
73GA2cG (1983Ru06)
73GA cG RI$weighted average of 2.6 {I2} (2017Ve05) and 3.6 {I5}
73GA2cG (1983Ru06)
73GA L 1721.54 22 (1/2-,3/2-) Y
73GA B 0.27 7 6.6 1
73GAS B EAV=988.9 12
73GA G 608.4 5 0.1 1 ?
73GA G 810.5 4 0.3 1
73GA G 1504.0 3 0.6 1
73GA G 1721.3 2 3.2 3 B
73GAF G FL=?
73GA L 1924.61 20 1/2-,3/2-
73GA B 0.77 19 6.0 1
73GAS B EAV=893.7 12
73GA G 1013.4 4 0.3 1
73GA G 1428.6 2 2.2 7
73GA cG E$weighted average of 1428.7 {I2} (2017Ve05) and 1428.3 {I5}
73GA2cG (1983Ru06)
73GA cG RI$unweighted average of 2.9 {I2} (2017Ve05) and 1.5 {I4}
73GA2cG (1983Ru06)
73GA G 1707.0 4 0.3 1
73GA G 1726.0 4 0.1 1
73GA G 1924.5 2 8.7 7 B
73GAF G FL=?
73GA cG E$weighted average of 1924.5 {I2} (2017Ve05) and 1924.7 {I8}
73GA2cG (1983Ru06)
73GA cG RI$weighted average of 8.1 {I7} (2017Ve05) and 9.3 {I7}
73GA2cG (1983Ru06)
73GA L 1980.01 21 (1/2-,3/2-) Y
73GA B 0.58 14 6.0 1
73GAS B EAV=867.9 12
73GA G 586.6 5 0.1 1 ?
73GA G 1069.7 3 0.2 1
73GA G 1483.9 3 1.8 2
73GA G 1761.6 5 0.6 2
73GA G 1979.7 2 6.2 5 B
73GAF G FL=?
73GA cG E$weighted average of 1979.7 {I2} (2017Ve05) and 1979.9 {I8}
73GA2cG (1983Ru06)
73GA cG RI$weighted average of 6.2 {I5} (2017Ve05) and 6.2 {I6}
73GA2cG (1983Ru06)
73GA L 2109.07 20 3/2-
73GA B 2.6 7 5.3 1
73GAS B EAV=807.8 12
73GA G 716.1 2 0.8 1
73GA G 1197.7 4 12.8 9
73GA cG E$weighted average of 1198.1 {I4} (2017Ve05) and 1197.3 {I4}
73GA2cG (1983Ru06)
73GA cG RI$weighted average of 11.9 {I23} (2017Ve05) and 12.9 {I9}
73GA2cG (1983Ru06)
73GA G 1613.1 2 15.7 9
73GA cG E$weighted average of 1613.1 {I2} (2017Ve05) and 1612.9 {I4}
73GA2cG (1983Ru06)
73GA cG RI$weighted average of 16.3 {I13} (2017Ve05) and 15.4 {I9}
73GA2cG (1983Ru06)
73GA G 1891.3 5 0.8 1
73GA G 2108.9 2 10.8 13 B
73GAF G FL=?
73GA cG E$weighted average of 2108.9 {I2} (2017Ve05) and 2109 {I1}
73GA2cG (1983Ru06)
73GA cG RI$unweighted average of 9.5 {I8} (2017Ve05) and 12.1 {I9}
73GA2cG (1983Ru06)
73GA L 2246.2 3 (1/2-,3/2-) Y
73GA B 0.10 3 6.6 1
73GAS B EAV=744.5 12
73GA G 2028.3 5 0.4 1
73GA G 2246.1 3 1.1 2 B
73GAF G FL=?
73GA L 2466.5 3 (3/2+) Y
73GA B 0.046 16 6.7 2
73GAS B EAV=643.6 12
73GA G 1970.5 7 0.2 1
73GA G 2248.6 5 0.3 1
73GA G 2466.4 3 0.2 1 B
73GAF G FL=?
73GA L 2770.38 24 (1/2-,3/2-) Y
73GA B 0.19 5 5.7 1
73GAS B EAV=507.1 12
73GA G 1859.5 3 0.3 1
73GA G 2274.3 3 1.1 1
73GA G 2571.2 7 0.1 1
73GA G 2770.2 3 1.4 3 B
73GAF G FL=?
73GA cG E$this transition from 2017Ve05 could correspond to the transition of
73GA2cG 2772 {I3} with I|g=1.7 {I3} placed from a 2990 level in 1983Ru06
73GA L 2814.6 4 Y
73GA B 0.020 11 6.6 3
73GAS B EAV=487.5 12
73GA G 2616.1 5 0.1 1
73GA G 2814.2 5 0.2 1 B
73GAF G FL=?
73GA L 2986.8 3 (1/2,3/2)-
73GA B 0.18 5 5.4 1
73GAS B EAV=412.3 11
73GA G 1593.7 5 0.2 1
73GA G 1873.0 5 0.3 1
73GA G 2769.3 5 0.2 1 ?
73GA G 2787.9 4 0.4 1
73GA G 2986.7 3 1.9 2 B
73GAF G FL=?
73GA cG E$weighted average of 2986.7 {I3} (2017Ve05) and 2989 {I3}
73GA2cG (1983Ru06)
73GA cG RI$other: 2.1 {I3} for the 2989 transition in 1983Ru06. Note that
73GA2cG 2017Ve05 also observe a transition of 2900.2 placed from 3099 level
73GA L 3099.1 4 (1/2-,3/2-) Y
73GA B 0.033 14 6.0 2
73GAS B EAV=364.1 11
73GA G 2881.7 5 0.1 1
73GA G 2900.2 5 0.2 1
73GA G 3098.8 6 0.2 1 B
73GAF G FL=?