240CM 244CF A DECAY 1967SI08,1967FI04 25NDS 202511
240CM H TYP=FUL$AUT=C. Morse$CIT=NDS 206, 359 (2025)$CUT=27-Sep-2024$
240CM cA E$The evaluator has considered values from studies where two |a
240CM2cA decays were observed, namely 1996Ma72 and 1967Si08. Energies from
240CM3cA other studies where only a single |a decay was observed: 7210 keV
240CM4cA {I20} (1973Es02), 7207 keV {I2} (1967Fi04), 7170 keV {I20} (1956Ch43).
240CM cA IA$|a intensity per 100 |a decays, given as recommended by 1991Ry01
240CM2cA from the intensity ratio of I|a(7214|a)/I|a(7174|a)=3.0 {I3},
240CM3cA measured by 1967Si08. The increased uncertainty, following evaluation
240CM4cA by 1991Ry01, reflects probable contributions from other sources.
240CM cA HF$The nuclear radius parameter r{-0}({+240}Cm)=1.4981 {I40} is
240CM2cA deduced by assuming HF=1.0 for the ground-state to ground-state alpha
240CM3cA decay branch.
240CM c $1950Th56, 1950Th57, and 1951Gh23 report on radioactivity initially
240CM2c assigned to {+244}Cf, but which was later reassigned to {+245}Cf in
240CM3c 1956Ch43.
244CF P 0.0 0+ 19.5 M 5 7329.0 18
244CF cP T$Weighted average of 19.3 min {I12} (2018Ko05), 20.4 min {I16}
244CF2cP (1967Fi04), and 19.4 min {I6} (1967Si08). Other: 20 min {I11}
244CF3cP (1973Es02), 25 min {I3} (1956Ch43).
244CF cP QP$From 2021Wa16
240CM N 0.75 6
240CM cN BR$From 2018Ko05, though authors note that there may be unaccounted
240CM2cN sources of systematic uncertainty.
240CM L 0.0 0+
240CM A 7214 4 75 3 1.000
240CM cA E$From 1967Si08. Other: 7218 keV {I20} (1967Fi04)
240CM L 40 6 (2+)
240CM cL E$From difference of E{-|a}
240CM cL J$From Adopted Levels
240CM A 7174 4 25 8 2.1 7
240CM cA E$From 1967Si08. Other: 7178 keV {I20} (1996Ma72)