Electron and ion mobility in carbon disulfide liquid from 163 to 501 K

Publisher Website
Google Scholar
Abstract
Electron mobility μe and cation mobility μ+ were measured in liquid carbon disulfide at 163 ≤ T/K ≤ 501. The cations diffuse about half as fast as neutral molecules. Values of μ+ were correlated using a free volume model. The electron mobility increased with increasing T up to ∼460 K and then tended to level off. Unlike in ethers or hydrocarbons, μe /μ+ =6–10 over a very large temperature range, ΔT=338 K. Electron migration by hopping from one group of molecules to the next, as in hexafluorobenzene, is suggested. Empirical correlations of the yields and lifetimes of ortho-positronium (o-Ps) with the values of μe in liquids were tested. Values of the static dielectric constant of CS2 were measured at 163–501 K: ε=3.4166−1.9826×10−3 T−6.5630×10−6 T 2 +2.2367×10−8 T 3 −2.4997 ×10−11 T 4 .