Non-Adiabatic Curve Crossings in Dissociative Electron Attachment of Condensed O2

Abstract

Previously published data on electron stimulated desorption (ESD) from condensed O2 or O2+ in matrices have been analyzed. Dissociative electron attachment (DEA) via the 2 Sigma sub g(+) resonant state can result in two different dissociation products (i.e. by proceeding to the dissociation limits O(3p) + O(-)(2-P) and O* (1D) + O(-)2(P). The O* (1D) product requires dissociation via a non-adiabatic curve crossing. O (1D) is the dominant DEA product in gaseous O2. Upon condensation, O(3P) becomes the dominant product; however, the branching ratio depends strongly on the kinetic energy of the dissociating atoms.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA262129

Entities

People

  • David E. Ramaker
  • Hideo Sambe

Organizations

  • George Washington University

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Attachment
  • Condensation
  • Crossings
  • Desorption
  • Dissociation
  • Electrons
  • Energy
  • Kinetic Energy

Readers

  • Combustion science or combustion engineering.
  • Plasma Physics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics