62NI 62CO B- DECAY (13.86 M) 1970JO12,1969ES03 25NDS 202507
62NI H TYP=FUL$AUT=Balraj Singh, Huang Xiaolong, and Wang Xianghan$
62NI2 H CIT=NDS 204, 1 (2025)$CUT=30-Jun-2023$
62NI c 1970Jo12 (also 1971JoZN thesis): {+62}Co from {+64}Ni(d,|a),E=16 MeV,
62NI2c using enriched {+64}Ni target at the Vrije University AVF cyclotron.
62NI3c Measured E|g, I|g, E|b, I|b, |g|g-coin, |b|g-coin, and half-life of
62NI4c {+62}Co isomer using Ge(Li) detectors and an NE102 plastic scintillator
62NI5c 12 |g rays reported. Identified main contaminants: {+60}Cu, {+61}Cu,
62NI6c {+62}Cu and {+61}Co.
62NI c 1969Es03: {+62}Co from Ni(n,p),E=14.5 MeV using natural Ni target.
62NI2c Measured E|g, I|g, |g|g-coin using Ge(Li) and NaI(Tl) detectors.
62NI3c Identified main contaminant activities: {+57}Ni, {+57}Co, {+58}Co,
62NI4c {+60m}Co, {+61}Co, {+61}Fe, and {+63}Co
62NI c Other studies:
62NI c 1969Wa16: {+62}Co from {+62}Ni(n,p) and Cu(n,|a),E(n)=14.8 MeV
62NI2c from University of Arkansas 400-KV Cockcroft-Walton linear accelerator
62NI3c using 97.8% and 99.05% enriched {+62}Ni targets and natural Cu target.
62NI4c Measured E|g, I|g, E|b, I|b, |g|g-coin, |b|g-coin, and half-life
62NI5c of {+62}Co g.s. using Ge(Li), NaI(Tl) and plastic scintillator.
62NI6c Nine |g rays assigned to the decay of {+62}Co isomer
62NI c 1969Mo04: {+62}Co from {+64}Ni(p,{+3}He) and {+64}Ni(p,2pn) using
62NI2c 97.92% enriched target, followed by chemical separation of Co and Cu
62NI3c using exchange columns. Measured E|g, I|g, |g|g-coin using Ge(Li)
62NI4c and NaI(Tl) detectors. Data for five |g rays
62NI c 1968Ki08: {+62}Co from {+62}Ni(n,p) and {+65}Cu(n,|a),E(n)=14.8 MeV
62NI2c from a neutron generator at Kazakh Academy of Sciences using enriched
62NI3c targets (95% {+62}Ni, 98% {+65}Cu). measured E|g, I|g, E|b using Ge(Li)
62NI4c detector, and a scintillation |b-ray spectrometer.
62NI5c Five |g rays reported.
62NI c 1960Pr05: measured E|b, half-life of {+62}Co isomer
62NI c 1957Ga15: measured E|b, I|b, E|g, I|g, |b|g-coin, |g|g-coin, half-life
62NI2c of {+62}Co isomer using scintillation detectors. Five |g rays reported.
62NI c 1954Nu27: measured E|g, I|g for six |g rays.
62NI c 1949Pa01: identified {+62}Co isotope, measured E|b, half-life of
62NI2c {+62}Co isomer
62NI c 1975TiZW (abstract in a conference proceedings): {+62}Co from
62NI2c {+62}Ni(n,p),E=fast neutrons, using enriched {+62}Ni target. Measured
62NI3c |g and |b|g-coin spectra using Ge(Li) and scintillation detectors.
62NI4c Authors reported 1068.4-, 1812.3- and 2018.5-keV |g transitions
62NI5c connecting known levels at 2048.6, 0+ and 3861.1, 1+,2+.
62NI6c None of these |g rays have been confirmed in a regular article.
62NI c Total decay energy of 5171 keV {I54} deduced (by RADLIST code) from
62NI2c proposed decay scheme is not in agreement with the expected value of
62NI3c 5295 keV {I33}, indicating that decay scheme is little complete
62NI cB IB$|b{+-} per 100 decays of 13.86-min {+62}Co, deduced from
62NI2cB transition intensity balances at each level. Note that the present
62NI3cB decay scheme gives I|b=2.3% {I11} for the 1173, 2+ level; and
62NI4cB I|b=1.2 {I4} for the 2302 level, 2+, while no feedings are expected to
62NI5cB these levels from the (5)+ parent. Small intensity imbalances are
62NI6cB likely due to minor inconsistencies in the intensities of the
62NI7cB feeding gamma transitions.
62NI cG E,RI$Weighted average of values from 1970Jo12 and 1969Es03,
62NI2cG when data are available in these studies. Values from 1969Wa16,
62NI3cG 1969Mo04 and 1968Ki08 are listed in comments. Available data from
62NI4cG 1970Jo12 and 1969Es03 are most complete, precise and consistent, thus
62NI5cG preferred over those from 1969Wa16, 1969Mo04 and 1968Ki08.
62NI cG $A |g ray with E|g=2251 {I1}, I|g=0.4 {I2} in 1970Jo12; and
62NI2cG E|g=2245 {I2}, I|g=2.0 {I2} in 1969Wa16 could be double-escape
62NI3cG of 3271-keV |g ray, which is assigned from the decay of 1.54-min
62NI4cG activity in 1970Jo12 but from the decay of 13.86-min activity
62NI5cG in 1969Es03
62NI cG $|g|g-coincidence data are from 1969Es03 and 1970Jo12
62NI cG $A |g ray of E|g=3271.1 {I10}, I|g=0.3 {I1} in 1969Es03, placed from
62NI2cG a 4444-keV level in {+62}Ni, is assigned instead from a 3271 level
62NI3cG in the decay of 1.54-min activity, based on the assignment of a
62NI4cG similar energy |g in {+61}Ni(n,|g) study, also given in the Adopted
62NI5cG dataset.
62NI cG E,RI$Weighted averages of values from 1970Jo12 and 1969Es03,
62NI2cG except as noted. Values from these studies are the most complete,
62NI3cG precise, and consistent as compared to those from 1969Wa16, 1969Mo04
62NI4cG and 1968Ki08. Values from the latter three studies are listed in
62NI5cG comments for comparison purpose.
62NI cG M,MR$From the Adopted Gammas
62NI cL $A 4444-keV level proposed by 1969Es03, decaying by 3271-keV |g
62NI2cL transition is omitted, as this |g ray is assigned as a ground-state
62NI3cL transition from the decay of 1.54-min {+62}Co decay
62NI cL $A 4440-keV level proposed by 1968Ki08, decaying by 2104-keV |g
62NI2cL is omitted as a 2100|g is placed from 3278 level
62NI cL $A 4350-keV level proposed by 1969Wa16, decaying by 2000-keV |g
62NI2cL is omitted as this |g is placed from 3177-keV level
62NI cL $A 2282-keV level proposed by 1968Ki08, decaying by 1709-keV |g
62NI2cL is omitted as a 1719|g is placed from 4055 level
62NI cL E$From least-squares fit to E|g values.
62NI cL J,T$From the Adopted Levels
62CO P 22 5 (5)+ 13.86 M 9 5322 19
62CO cP E,J,T$From {+62}Co Adopted Levels
62CO cP QP$From 2021Wa16
62NI N 0.9821 2 0.995 5 1.00503
62NI cN NR$From |S(I(|g+ce)) to g.s.=99.5 {I5}, assuming no |b{+-}
62NIxcN feeding to the g.s., and total |b{+-} branch=99.5% {I5}
62NI cN BR$%IT<1 for the decay of 13.86-min isomer
62NI PN 3
62NI L 0.0 0+ STABLE
62NI L 1172.93 19 2+ 1.442 PS 21
62NI B ?
62NI cB $I|b=2.3 {I11} from intensity imbalances.
62NI2cB No I|b is expected for |DJ=3 involved for the |b transition.
62NI G 1172.9 2 100 E2 1.72E-4 3 C
62NI2 G %IG=97.2 7
62NI cG $E|g=1173.0 {I3}, I|g=100 (1970Jo12)
62NI cG $E|g=1172.9 {I2}, I|g=100.0 (1969Es03)
62NI cG $Others:
62NI cG $E|g=1172 {I1}, I|g=100 (1969Mo04)
62NI cG $E|g=1172 {I1}, I|g=100.0 (1969Wa16)
62NI cG $E|g=1172.3 {I7}, I|g=100 (1968Ki08)
62NIS G KC=0.0001501 21$LC=1.466E-5 21$MC=2.06E-6 3$NC=8.89E-8 13
62NI L 2301.87 27 2+ 0.64 PS 14
62NI B ?
62NI cB $I|b=1.2 {I4} from intensity imbalances.
62NI2cB No I|b is expected for |DJ=3 involved for the |b transition.
62NI G 1129.0 3 1.3 2 M1+E2+E0 +3.1 1 2.44E-414
62NI2 G %IG=1.26 20
62NI cG $E|g=1129.1 {I3}, I|g=1.4 {I2} (1970Jo12)
62NI cG $E|g=1128.7 {I5}, I|g=1.0 {I4} (1969Es03)
62NI cG CC$from measured |a(K)exp=1.95E-4 {I11} (2019Ev01) in (p,p'|g)
62NI G 2301.9 5 1.8 2 E2 5.04E-4 7
62NI2 G %IG=1.75 19
62NI cG $E|g=2302.0 {I5}, I|g=1.8 {I2} (1970Jo12)
62NI cG $E|g=2301.7 {I6}, I|g=1.9 {I3} (1969Es03)
62NI cG $Other:
62NI cG $E|g=2298 {I2}, I|g=3.4 {I3} (1969Wa16)
62NIS G KC=3.97E-5 6$LC=3.85E-6 6$MC=5.42E-7 8$NC=2.35E-8 4
62NI L 2336.45 27 4+ 0.88 PS 21
62NI B 61.3 10 6.159 15
62NIS B EAV=1286 10
62NI cB $Measured E|b=2.90 MeV {I10} (1969Wa16), 2.88 MeV {I30} (1957Ga15),
62NI2cB 2.8 MeV {I2} (1954Nu27)
62NI cB $Measured I|b=75% (1957Ga15)
62NI G 1163.5 2 69.6 8 E2 1.74E-4 3 C
62NI2 G %IG=67.7 9
62NI cG $E|g=1163.5 {I3}, I|g=70.5 {I12} (1970Jo12)
62NI cG $E|g=1163.5 {I2}, I|g=69.0 {I10} (1969Es03)
62NI cG $Others:
62NI cG $E|g=1163 {I1}, I|g=73.8 {I74} (1969Mo04)
62NI cG $E|g=1163 {I1}, I|g=78.8 {I26} (1969Wa16, |D(I|g)=0.26 seems too
62NI2cG small to be realistic, possibly a misprint of 2.6)
62NI cG $E|g=1163.5 {I8}, I|g=75 {I5} (1968Ki08)
62NIS G KC=1.528E-4 22$LC=1.493E-5 21$MC=2.10E-6 3$NC=9.05E-8 13
62NI L 3176.74 31 4+ 0.73 PS 17
62NI B 19.8 6 6.043 22
62NIS B EAV=889 9
62NI cB $Measured E|b=2.0 MeV {I2} (1969Wa16, |b|g-coin)
62NI G 875.0 4 1.3 2 [E2] 3.36E-4 5
62NI2 G %IG=1.26 20
62NI cG $E|g=874.9 {I6}, I|g=1.4 {I2} (1970Jo12)
62NI cG $E|g=875.0 {I4}, I|g=1.1 {I3} (1969Es03)
62NIS G KC=3.02E-4 5$LC=2.96E-5 5$MC=4.17E-6 6$NC=1.78E-7 3
62NI G 2003.7 3 19.0 6 E2 3.70E-4 5 C
62NI2 G %IG=18.5 6
62NI cG $E|g=2003.9 {I3}, I|g=18.9 {I9} (1970Jo12)
62NI cG $E|g=2003.4 {I4}, I|g=19.1 {I6} (1969Es03)
62NI cG $Others:
62NI cG $E|g=2003 {I1}, I|g=18.5 {I19} (1969Mo04)
62NI cG $E|g=2000 {I2}, I|g=28.6 {I6} (1969Wa16, placed from a 4350 level)
62NI cG $E|g=2003.1 {I15}, I|g=15.0 {I15} (1968Ki08)
62NIS G KC=5.09E-5 8$LC=4.94E-6 7$MC=6.96E-7 10$NC=3.02E-8 5
62NI L 3277.69 31 4+ 0.31 PS 11
62NI B 4.7 9 6.58 9
62NIS B EAV=842 9
62NI G 2104.7 3 6.6 4 E2 C
62NI2 G %IG=6.4 4
62NI cG $E|g=2104.9 {I3}, I|g=6.4 {I5} (1970Jo12)
62NI cG $E|g=2104.2 {I5}, I|g=6.7 {I4} (1969Es03)
62NI cG $Others:
62NI cG $E|g=2103 {I1}, I|g=7.7 {I8} (1969Mo04)
62NI cG $E|g=2100 {I2}, I|g=12.3 {I3} (1969Wa16)
62NI cG $E|g=2104.0 {I20}, I|g=7.3 {I5} (1968Ki08)
62NI L 4055.23 32 4+ 0.042 PS 14
62NI B 10.2 6 5.413 37
62NIS B EAV=488 9
62NI cB $Measured E|b=1.30 MeV {I20} (1969Wa16, |b|g-coin)
62NI G 777.5 3 1.8 2
62NI2 G %IG=1.75 20
62NI cG $E|g=777.8 {I9}, I|g=2.0 {I4} (1970Jo12)
62NI cG $E|g=777.5 {I3}, I|g=1.7 {I2} (1969Es03)
62NI cG $Other:
62NI cG $E|g=777 {I1}, I|g=3.3 {I2} (1969Wa16)
62NI G 1718.7 5 6.9 5 C
62NI2 G %IG=6.7 5
62NI cG $E|g=1719.1 {I3}, I|g=7.1 {I5} (1970Jo12)
62NI cG $E|g=1718.2 {I3}, I|g=6.7 {I5} (1969Es03)
62NI cG $Others:
62NI cG $E|g=1715 {I2}, I|g=8.1 {I3} (1969Wa16)
62NI cG $E|g=1709.2 {I15}, I|g=7.2 {I5} (1968Ki08, E|g is possibly a misprint
62NI2cG of 1719.2)
62NI G 1753.5 8 0.6 2
62NI2 G %IG=0.58 20
62NI cG E,RI$|g from 1970Jo12 only
62NI G 2882.3 5 1.1 1 C
62NI2 G %IG=1.07 10
62NI cG $E|g=2882.6 {I5}, I|g=1.1 {I1} (1970Jo12)
62NI cG $E|g=2881.9 {I6}, I|g=1.2 {I2} (1969Es03)
62NI cG $Other:
62NI cG $E|g=2877 {I3}, I|g=2.0 {I2} (1969Wa16)