Electron-impact ionization of molecules

Author

Junfang Gao

Keywords and Phrases

Distorted wave impulse approximation

Abstract

"Electron-impact ionization of molecules has been a fascinating and intriguing subject for decades. For high incident-electron energy ( ̃thousand eV), the collision dynamics has been well described by the plane wave impulse approximation (PWIA) for most molecules. For intermediate and low incident-electron energy ( ̃hundreds-tens eV) collisions, currently there has been no reliable theoretical approach for studying the micro ionization mechanism. In this dissertation, new distorted wave impulse approximation (DWIA) and molecular three-body approximation (M3DW) are proposed which use an orientation averaged molecular orbital (OAMO) to average all molecular orientations in T-matrix. The new theoretical approaches are used to calculate fully differential cross sections (FDCS) for intermediate and low energy electron-impact ionization of molecules"--Abstract, page iv.

Advisor(s)

Madison, Don H.

Committee Member(s)

Peacher, Jerry
Schulz, Michael, 1959-
Hale, Barbara N.
Sinn, Ekkehard
Knight, W. Nicholas (William Nicholas), 1939-

Department(s)

Physics

Degree Name

Ph. D. in Physics

Publisher

University of Missouri--Rolla

Publication Date

Spring 2006

Journal article titles appearing in thesis/dissertation

• Distorted wave impulse approximation
• Elementary method for calculating orientation-averaged fully differential electron-impact ionization cross section for molecules
• Distorted wave born and three-body distorted wave born approximation calculations of the fully differential cross section for electron-impact ionization of nitrogen molecules
• Fully differential cross sections for low energy electron-impact ionization of nitrogen molecules
• Interference effects for low-energy electron-impact ionization of nitrogen molecules
• Theoretical calculation of fully differential cross sections for electron-impact ionization of hydrogen molecules
• Theoretical treatment of electron-impact ionization of molecules
• Young-type interference in (E,2E) ionization of H2
• Experimental and theoretical cross sections for coplanar asymmetric ionization of H₂ by 75.3 eV incident energy electrons

Pagination

xiii, 197 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2006 Junfang Gao, All rights reserved.

Document Type

Dissertation - Citation

File Type

text

Language

English

Subject Headings

Electron impact ionizationMolecular dynamics

Thesis Number

T 8989

Print OCLC #

85838641

Recommended Citation

Gao, Junfang, "Electron-impact ionization of molecules" (2006). Doctoral Dissertations. 1666.
https://scholarsmine.mst.edu/doctoral_dissertations/1666