Abstract

We present both experimental and theoretical results for the dissociative ionization of D2 molecules induced by electron impact. Cross sections are determined in the molecular frame and are fully differential in the energies and emission angles of the dissociation fragments. Transitions are considered from the X1Σg+ electronic ground state of D2 to the 2sσg, 2pπu and 2pσu excited states of D2+. The experimental results are compared to calculations performed within the molecular four-body distorted-wave framework to describe the multicenter nature of the scattering process. The cross sections reveal a dramatic dependence on both the alignment of the internuclear axis with respect to the direction of the projectile momentum and on the symmetry of the excited dissociating state which is energetically resolved.

Department(s)

Physics

Keywords and Phrases

Dissociation fragments; Dissociative ionization; Distorted waves; Electron impact; Electronic ground state; Fully differential; Internuclear axis; Scattering process; Dissociation; Excited states; Impact ionization

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2013 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

Share

 
COinS