Angular and Energy Dependence of Cross Sections for Ejection of Electrons from Water Vapor. I. 50-2000-eV Electron Impact

Authors

• M. A. Bolorizadeh, University of Nebraska - Lincoln
• M. Eugene Rudd, University of Nebraska - LincolnFollow

Document Type

Article

Date of this Version

1986

Comments

Published in Physical Review A Volume 33, Number 2, February 1986. Copyright © American Physical Society; used by permission.

Abstract

We have measured the angular and energy distribution of the absolute cross sections for ejection of electrons from water vapor by electrons incident at 50-2000 eV. The angular range was 15° to 150° and the range of secondary electron energies was from 2 eV to an energy equal to the primary energy minus the first ionization potential. Electron energies were analyzed with a parallel-plate electrostatic analyzer with a resolution of 1.1%. Generally good agreement is obtained with the data of Opal et al. [J. Chem. Phys. 55, 4100 (1971)l at 500 eV except at the extremes of their angular range. Our energy distributions are compared to various binary-encounter-model calculations