Mobility of excess electrons in methylamine vapor and electron scattering processes in dense polar vapors

J. C. Thompson*, U. Even, D. K. Blanks

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The mobility μ of electrons photoinjected into CH3NH2 vapor was measured with a drift time-of-flight apparatus. At room temperature the μ. values ranged from 1100 cm2/(V·s) at the lowest density (n = 6 × 1018 cm-3) to 70 cm2/(V·s) at the highest density (n = 8 × 1019 cm-3). The normalized mobility nμ drops with increasing density as for other polar fluids. We use the Ioffe-Regel criterion for the onset of strong scattering. A simple criterion for evaluating the strengths of the electron-molecule interaction (suggested by Warman) permits us to determine a relation between dipole moment and strong scattering, valid for all polar fluids studied to date. Some conjectures about electron localization are offered.

Original languageEnglish
Pages (from-to)3709-3711
Number of pages3
JournalJournal of Physical Chemistry
Volume88
Issue number17
DOIs
StatePublished - 1984
Externally publishedYes

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