64NI 64CO B- DECAY (0.30 S) 2012PA39,1974RA31 21NDS 202112
64NI H TYP=FUL$AUT=Balraj Singh and Jun Chen$CIT=NDS 178, 41 (2021).$
64NI2 H CUT=12-Nov-2021$
64NI c 2012Pa39: The {+64}Co decay data were taken as part of |b-decay of Mn
64NI2c isotopes at the CERN-ISOLDE. Pure and intense {+58,60-68}Mn ions were
64NI3c produced in an induced fission reaction of a 1.4 GeV proton beam
64NI4c impinging on a thick UC{-x} target of 45 g/cm{+2} thick, ionized by the
64NI5c RILIS laser system, separated by the High Resolution Separator (HRS)
64NI6c and finally implanted into a movable tape surrounded by three thin
64NI7c plastic |DE |b detectors and two MINIBALL |g-detector clusters.
64NI8c Measured E|g, I|g, |g|g-coin, E|b. Deduced levels, J|p, |b-decay
64NI9c branching ratios, log{Ift}, configurations.
64NI c 1974Ra31: {+64}Co ions were produced from {+64}Ni(n,p) with 14 MeV
64NI2c neutrons from the AERE. Target was 30 mg metallic 96.44% enriched
64NI3c {+64}Ni. |g rays were detected with a Ge(Li) and a NaI(Tl) detector;
64NI4c |b particles were detected with a plastic scintillator. Measured E|g,
64NI5c I|g, E|b, I|b, |b|g-coin, |b|g(t). Deduced parent T{-1/2}, |b-decay
64NI6c branching ratios.
64NI c Other: 2012Br15, 1969Wa15. Measured T{-1/2}, |b{+-}, |g
64NI c Activities of 28 s (1966St11), 2.0 min and 7.8 min (1960Pr05,
64NI2c 1962Va23), |?4 min (1949Pa01) assigned to {+64}Co decay later
64NI3c reassigned to other nuclides (1969Wa15,1966Le19)
64NI c |b-strengths (theoretical): 1995Ko26, 1991Ka25
64NI c The decay scheme is incomplete due to a large (|?3 MeV) gap between the
64NI2c highest observed level at 4556 keV and Q(|b{+-})value of 7307 keV.
64NI cB IB$Deduced by evaluators from |g-ray intensity balances assuming g.s.
64NI2cB |b{+-} feeding I|b{+-}=92.0 {I9} measured by 2012Pa39. The values
64NI3cB could be overestimated due to incomplete decay scheme and should be
64NI4cB considered as approximate, except for I|b{+-}(g.s.).
64NI cB LOGFT$Values are approximate due to incomplete decay scheme.
64NI cG E,RI$From 2012Pa39, unless otherwise noted.
64NI cG M$From the Adopted dataset
64NI cL E$From a least-squares fit to |g-ray energies.
64NI2cL Uncertainty of 688.0|g was doubled to 0.6 keV in the fitting procedure
64NI cL J,T$From the Adopted Levels
64CO P 0.0 1+ 0.30 S 3 7307 20
64CO cP J,T$From Adopted Levels of {+64}Co.
64CO cP QP$From 2021Wa16
64NI N 0.075 1.0
64NI cN NR$From |S(I(|g+ce) to g.s.)=100-I|b{+-}(g.s.), with the g.s.
64NI2cN |b{+-} feeding I|b{+-}(g.s.)=92.0 {I9} measured in 2012Pa39. Due to
64NI3cN the incomplete decay scheme, the normalization is considered as
64NI4cN approximate
64NI PN 3
64NI L 0.0 0+
64NI B 92.0 9 4.26 5
64NIS B EAV=3376.8 98
64NI cB E$measured: 7.0|*10{+3} {I4} (1974Ra31), 7.0|*10{+3} {I5} (1969Wa15)
64NI cB IB$deduced in 2012Pa39 by comparing the number of {+64}Co decays to
64NI2cB the {+64}Co |b-delayed |g-ray intensity. Other: 90 {I+5-10} (1974Ra31)
64NI L 1345.77 6 2+ 1.086 PS 35
64NI B 3.2 AP 5.3 AP
64NIS B EAV=2720.4 98
64NI cB E$measured: 5.6|*10{+3} {I5} (1974Ra31)
64NI G 1345.8 1 100 E2 C
64NI cG E$weighted average of 1345.8 {I1} (2012Pa39) and 1346.1 {I3} (1974Ra31)
64NI L 2276.58 7 2+
64NI B 2.9 AP 5.0 AP
64NIS B EAV=2267.1 98
64NI cB E$measured: 4.8|*10{+3} {I6} (1974Ra31)
64NI G 930.8 1 40.7 9 (M1+E2) -0.9 AP C
64NI cG E$weighted average of 930.8 {I1} (2012Pa39) and 931.1 {I3} (1974Ra31)
64NI G 2276.6 1 1 LT
64NI L 2867.39 12 0+ 1.4 PS 6
64NI B 0.57 AP 5.5 AP
64NIS B EAV=1980.1 97
64NI G 1521.6 1 7.6 6 E2 C
64NI L 2972.09 8 (1,2+) 0.13 PS +13-5
64NI B 0.18 AP 5.9 AP
64NIS B EAV=1929.3 97
64NI G 695.7 3 0.8 3 C
64NI G 1626.3 1 1.0 4 C
64NI G 2972.0 1 0.6 2
64NI L 3025.89 12 0+ 3.6 PS 12
64NI B 0.23 AP 5.8 AP
64NIS B EAV=1903.2 97
64NI G 1680.1 1 3.1 4 E2 C
64NI L 3153.73 7 2+
64NI B 0.03 LT 6.6 GT ?
64NIS B EAV=1841.3 97
64NI G 877.2 1 1.9 3 C
64NI G 1808.0 1 2.4 4 C
64NI G 3153.7 1 3.3 6 C
64NI L 3275.99 8 2+ 0.24 PS 3
64NI B 0.19 AP 5.8 AP
64NIS B EAV=1782.1 97
64NI G 1930.2 1 0.3 2 (M1+E2) C
64NI G 3275.9 1 2.2 5
64NI L 3578.55 8 (1+)
64NI B 0.03 LT 6.4 GT ?
64NIS B EAV=1635.9 97
64NI G 2232.9 1 0.7 5 C
64NI G 3578.3 1 0.3 LT
64NI L 3856.54 22 0+
64NI B 0.48 AP 5.1 AP
64NIS B EAV=1501.9 97
64NI G 278.6 3 0.6 3 C
64NIF G FL=3578.55
64NI G 702.2 3 5.8 3 C
64NI L 4268.12 9 0+
64NI B 0.23 AP 5.2 AP
64NIS B EAV=1304.4 96
64NI G 688.0 3 0.5 2 C
64NIF G FL=3578.55
64NI G 1114.6 1 2.3 4 C
64NI G 2922.1 1 0.5 LT
64NI L 4556.4 4 (0+,1+,2+)
64NI B 0.09 AP 5.4 AP
64NIS B EAV=1166.8 96
64NI G 3210.5 4 1.2 4 C