60NI 60CO B- DECAY (1925.28 D) 13NDS 201312
60NI H TYP=FUL$AUT=E. BROWNE, J. K. TULI$CIT=NDS 114, 1849 (2013)$
60NI2 H CUT=31-Dec-2012$
60NI c Based on an evaluation by R. G. Helmer, January 1998 including some
60NI2c general comments from previous evaluation (1993Ki10).
60NI2c This evaluation was done as part of a collaboration of evaluators
60NI3c from Laboratoire National Henri Becquerel (LNHB) in France;
60NI4c Physikalisch-Technische Bundesanstalt (PTB) in Germany; HMS
60NI5c Sultan and AEA Technology in the United Kingdom; Khlopin Radium
60NI6c Institute (KRI) in Russia; Centro de Investigaciones
60NI7c Energeticas, Medioambientales, y Tecnologicas (CIEMAT) and
60NI8c Universidad Nacional a Distancia (UNED) in Spain; and Brookhaven
60NI9c National Laboratory (BNL), Lawrence Berkeley National Laboratory
60NI0c (LBNL), and Idaho National Engineering and Environmental
60NIAc Laboratory (INEEL) in the United States. See also: 1999BeZQ,
60NIBc 1999BeZS
60NI c {+60}Co generally from {+59}Co(n,|g). Measured E|g, I|g with Compton
60NI2c suppression spectrometer, Ge(Li) and NaI detectors (1976Ca18).
60NI3c Measured E|b, I|b, E|g with magnetic spectrometer, Ge(Li)
60NI4c detector (1968Ha03). Measured |g(|q) from {+60}Co polarized in
60NI5c Fe by low-temperature techniques with Ge(Li) and NaI detectors
60NI6c (1980Kr05). Measured |g|g(t) with combined plastic-NaI detectors
60NI7c and centroid shift technique (1976Kl04). Measured E|b in
60NI8c iron-free spectrometer (1968Wo02). For |b(|q) emitted from
60NI9c polarized {+60}Co, see 1980Ch14. For |g|g(|q) measurements,
60NI0c see 1969Kh11. Measured I|g by detecting neutrons from the
60NIAc d(|g,n) reaction caused by the 2505 |g-ray (1978Fu05).
60NI c For K-shell ionization in the |b{+-} decay of {+60}Co, see 1983Ki04.
60NI C Others: 2008Sy01, 2006Pa20, 2004Ge20, 2004Ka07, 2003Lu04, 1983La06,
60NI2C 1982Er10, 1977Lo01, 1976Bo16, 1976Hu09, 1973Fu15, 1972Le14, 1970Wa19,
60NI3C 1970Di01, 1970Ri20, 1969Va20, 1969Ra23, 1961Ca05, 1956Wo09, 1954Ke04.
60NI c Decay scheme is internally consistent since the total decay energy
60NI2c computed from this scheme is 2821.0 {i2} keV compared
60NI3c to the Q value of 2822.8 {i2}.
60NI c 1998Ku24: measured "Near-Zero Energy" electrons (distribution, peak=
60NI2c 0.2 eV, FWHM=1 eV) intensity=0.14 per |b{+-} decay
60NI C 2010Wa40: measured |b- asymmetry by polarizing a 60CO source using
60NI2C a low-temperature nuclear orientation method.
60NI cB E From 1968Ha03, except as noted.
60NI DG CC$ FROM BrIcc v2.2 (31-Mar-2008) 2008KiAA, "Frozen Orbitals" appr.
60NI2DG E. Browne (2/28/2013).
60NI cG A possible |g of 467 keV with I|g<0.0004% (1969Va20) and
60NI2cG <0.00023 (1976Ca18) from the known level at 2626 keV to the
60NI2cG 2158 level is not included here. At the lower intensity limit,
60NI4cG the I{-|b} to the 2626 level would be <0.001%.
60NI cG E From 2000He14 for 1173 and 1332 |g rays. The others were
60NI2cG deduced from the level energies from a fit to the |g-ray
60NI3cG energies. In addition to the 1173 and 1332 values, the input to
60NI4cG this fit included 346.93 {i7} (1978Ca18 where the authors average
60NI5cG their result and that of 1969Va20); 826.06 [from
60NI6cG {+59}Co(p,|g){+60}Ni (1975Er05)]; 2158.57 {i10} [from
60NI7cG {+59}Co(p,|g) (1975Er05)]. Other measured |g energies include:
60NI8cG 346.95 {i10} (1969Va20)], 826.18 {i20} (1969Va20), 826.28 {i9}
60NI9cG (1976Ca18, but includes value of 1969Va20), 2158.8 {i4}
60NI0cG (1970Di01), 2158.9 {i2} (1969Ra07), and 2159.6 {i8} (1969Ho22).
60NI cG RI I(K| x ray)=0.0112 computed from decay scheme
60NI cG M,MR From {+60}Ni Adopted gammas, except as noted.
60NI cG CC Interpolated using program BRICC, unless
60NI2cG otherwise noted.
60NI cL J From {+60}Ni Adopted Levels.
60CO P 0.0 5+ 1925.28 D 14 2822.8 2
60NI N 1.0 1.0 1.0 1.0
60NI PN 4
60NI L 0.0 0+ STABLE
60NI cL The |b{+-} feeding of this level is a unique 4{+th} forbidden
60NI2cL transition. From the systematics (1998Si17), the log{Ift} of
60NI3cL this transition will be >23 and the corresponding intensity
60NI4cL will be <1.0x10{+-10}%.
60NI L 1332.508 4 2+ 0.9 PS 3
60NI cL T from |g|g(t) by 1976Kl04.
60NI B 1492 20 0.12 3 14.70 11 2U
60NIS B EAV=625.87 21
60NI cB IB average of measured values of 0.15 {i1} (1954Ke04), 0.010
60NI2cB {i2} (1956Wo09), 0.12 (1961Ca05), and 0.08 {i2} (1968Ha03).
60NI G 1332.492 4 99.9826 6 E2
60NIS G CC=0.0001625 23$KC=0.0001137 16$LC=1.108E-5 16$MC=1.560E-6 22
60NIS G NC=6.73E-8 10$IPC=3.61E-5 5
60NI cG RI from I{-|g}(1332)=(100.00 - I{-|g}(2158)[1.0+|a(2158)] -
60NI2cG I{-|g}(2505)[1.0+|a(2505)]) / [1.00+|a(1332)+|a{-|p}(1332)]=
60NI3cG 99.9988 {i2} / 1.000162 {i6}. In the evaluation 1991BaZS, this
60NI4cG is computed in the same fashion, but is given as 99.983% {i6};
60NI5cG the origin of the larger uncertainty is not clear.
60NI cG CC |a and |a{-K} from 1985HaZA evaluation of measured values;
60NI2cG from theory (1976Ba63) |a=1.25x10{+-4}, |a{-K}=1.14x10{+-4},
60NI3cG and |a{-L}=1.13x10{+-5}.
60NI cG CC |a{-|p}=3.4*10{+-5} {i4} interpolated from theoretical
60NI2cG values of 1979Sc31; 3.0|*10{+-5} {I3} (1994GrZW)
60NI L 2158.612 21 2+
60NI B 670 20 0.000 2 14.0 GE 2U?
60NI CB IB from the LOGFT systematics (1998Si17), the lowest
60NI2CB LOGFT values for unique second forbidden decays are 13.86
60NI3CB for {+10}Be and 14.36 and 14.61 for higher masses. For a
60NI4CB reasonable lower limit of 14.4 for the LOGFT for this
60NI5CB transition, the |b intensity would be less than 0.001%.
60NI6CB Therefore, the evaluator has assigned the most probable value
60NI7CB as 0.000 with an uncertainty of 0.002.
60NI G 826.10 3 0.0076 8 M1+E2 +0.9 3
60NIS G CC=0.000337 18$KC=0.000303 17$LC=2.97E-5 17$MC=4.18E-6 23$NC+=1.80E-7 1
60NIS G NC=1.80E-7 10
60NI cG RI from 1976Ca18; others: 0.0055 {i47} (1969Va20) and 0.003
60NI2cG {i2} (1972Le14).
60NI G 2158.57 3 0.0012 2 [E2]
60NIS G CC=0.000439 7$KC=4.45E-5 7$LC=4.32E-6 6$MC=6.08E-7 9$NC+=0.000390 6
60NIS G NC=2.64E-8 4$IPC=0.000389 6
60NI cG RI from consideration of 0.0012 {i2} (1955Wo44), <0.002
60NI2cG (1969Ra23), 0.0092 {i16} (1970Di01), 0.0005 {i2} (1972Le14),
60NI3cG 0.0020 {i13} (1973Fu15), and 0.00111 {i18} (1976Ca18).
60NI L 2505.748 4 4+ 3.3 PS 10
60NI cL T see adopted levels.
60NI B 317.88 10 99.88 3 7.512 2
60NIS B EAV=95.77 15
60NI cB IB from 100.00 - I{-|b-}(1332) - I{-|b-}(2158).
60NI G 347.14 7 0.0075 4 [E2]
60NIS G CC=0.00557 8$KC=0.00499 7$LC=0.000503 7$MC=7.06E-5 10$NC+=2.90E-6 4
60NIS G NC=2.90E-6 4
60NI cG RI from consideration of <0.005 (1955Wo44), 0.0078 {i12}
60NI2cG (1969Va20), <0.006 (1970Di01), 0.00758 {i50} (1976Ca18), and
60NI3cG 0.0069 {i10} (1977Lo01).
60NI G 1173.228 3 99.85 3 E2(+M3) -0.0025 22
60NIS G CC=0.0001722 25$KC=0.0001500 21$LC=1.465E-5 21$MC=2.06E-6 3
60NIS G NC=8.88E-8 13$IPC=5.42E-6 8
60NI cG RI from I{-|g}(1173)=(I{-|b-}(2505) - I{-|g}(347)[1.0+|a(347)]
60NI2cG - I{-|g}(2505)[1.0+|a(2505)]) / [1.00+|a(1173)+|a{-|p}(1173)]=
60NI3cG 99.87 {i3} / 1.000174 {i4}.
60NI cG MR from 1980Kr05.
60NI cG CC from 1985HaZA evaluation of measured values; from theory
60NI2cG (1976Ba63) |a=1.65x10{+-4}, |a{-K}=1.50x10{+-4}, and
60NI3cG |a{-L}=1.48x10{+-5} {i4}
60NI cG CC |a{-|p}=6.2*10{+-6} {i7} interpolated from theoretical
60NI2cG values of 1979Sc31; this value is negligible since it is only
60NI3cG about 5% of the corresponding |a.
60NI G 2505.692 5 2.0E-6 4 E4
60NIS G CC=8.63E-5 12$KC=7.76E-5 11$LC=7.58E-6 11$MC=1.069E-6 15$NC+=4.62E-8 7
60NIS G NC=4.62E-8 7
60NI cG RI from consideration of <4x10{+-5} (1970Di01), 9x10{+-6} {i7}
60NI2cG (1973Fu15), <1x10{+-3} (1977HaXC), 2.0x10{+-6} {i4} (1978Fu05),
60NI3cG and 5.2x10{+-6} {i20} (1988Se09).