pre-exponential factor, \(A\)

Also contains definition of: \(A\)-factor
Synonym: Arrhenius A factor
https://doi.org/10.1351/goldbook.P04811
@C01124@ in front of the exponential factor expressing the empirical temperature dependence of the @R05137@, \(k\), on temperature, \(T\),\(k=A\ \exp (- E_{\text{a}}/R\ T)\), where \(E_{\text{a}}\) is the @A00093@ energy.
Sources:
Green Book, 2nd ed., p. 56 [Terms] [Book]
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 177 [Terms] [Paper]