radioactive decay constant

radioactive decay constant

[¦rād·ē·ō′ak·tiv di¦kā ‚kän·stənt]
(physics)
References in periodicals archive ?
Decay Constants and Half-Lives Geologically Important Radioactive Isotopes Radioactive Decay Constant Half-Life Isotope ([years.sup.-1]) (years) [sup.14]C 0.1209 x [10.sup.-3] 5730 [sup.40]K 0.581 x [10.sup.-10] 1.19 x [10.sup.10] [sup.87]Rb 1.42 x [10.sup.-11] 48.8 x [10.sup.9] [sup.147]Sm 0.654 x [10.sup.-12] 1.06 x [10.sup.11] [sup.232]Th 4.9475 x [10.sup.-11] 14.01 x [10.sup.9] [sup.235]U 9.8485 x [10.sup.-10] 0.7038 x [10.sup.9] [sup.238]U 1.55125 x [10.sup.-10] 4.468 x [10.sup.9]