The quasi-ballistic model of electron mobility in liquid hydrocarbons

✍ Scribed by A. Mozumder

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 237 KB
• Volume: 47
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(95)00113-c

✦ Synopsis

A phenomenological theory of low-mobility liquid hydrocarbons is developed which includes electron ballistic motion in the quasi-free state, in competition with diffusion and trapping. For most low-mobility liquids the theory predicts consistently the effective mobility and activation energy, in agreement with experiments, using quasi-free mobility and trap density respectively as ~ 100 cm: v-~ sand ~ 10 ~9 cm-3. Field dependence of mobility is theoretically of quadratic type for relatively small fields, agreeing approximately with experimental data for n-hexane. Electron scavenging with "good" scavengers occurs via the quasi-free state at nearly diffusion-controlled rate; however the effect of large mean free path is seen clearly.