Technique allowing the quantitative and qualitative detection of radiation-induced changes in the real, ΔReσ, and imaginary, ΔImσ, components of the conductivity of a medium by time-resolved measurement of changes in the microwave absorption resulting from the formation of mobile charges or from changes in the dipole moment or polarizability of molecules on excitation.
Note:
From ΔReσ (corresponding to a change in the dielectric loss, Δεʺ) the product of the yield and the @M03955@ of charges carriers or the @D01761@ change can be determined. From ΔImσ (corresponding to a change in the @R05273@, Δεʹ) the product of the yield and the change in molecular @P04711@ can be determined.
Source:
PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 433 (https://doi.org/10.1351/pac200779030293)