Ionization of helium by proton and H₂⁺ impact studied by projectile and recoil ion momentum spectroscopy

Author

Liqun An

Abstract

“Projectile momentum spectroscopy and cold target recoil ion momentum spectroscopy (COLTRIMS) have been applied to study single ionization of He by proton and H₂⁺ impact. In the case of the H₂⁺ projectiles a kinematically complete experiment on single ionization was performed by measuring the fully momentum analyzed projectiles and recoil ions in coincidence. The electron momentum was deduced from momentum conservation. From the projectile momentum measurement, doubly differential single ionization cross sections as a function of the longitudinal and transverse projectile momentum were obtained. For the case of H₂⁺ + He collisions, clear signatures of the post-collision interaction between the outgoing projectiles and the electrons were observed in the momentum spectra of all collision products simultaneously. The importance of the post-collision interaction between the projectile and the ionized electron was demonstrated by the studies"--Abstract, page iv.

Advisor(s)

Schulz, Michael, 1959-

Committee Member(s)

DuBois, R. D. (Robert D.), 1951-
Peacher, Jerry
Madison, Don H.
Dekock, Arlan R.

Department(s)

Physics

Degree Name

Ph. D. in Physics

Sponsor(s)

National Science Foundation (U.S.)

Comments

This work was supported by the National Science Foundation under Grant No. PHY 9732150.

Publisher

University of Missouri--Rolla

Publication Date

Spring 2002

Journal article titles appearing in thesis/dissertation

• Projectile Momentum Spectroscopy in Singly Ionizing p + He Collisions
• Projectile and Recoil Ion Momentum Spectroscopy in Proton and Helium Collisions
• Fully Differential Single Ionization Cross Sections for 75 keV H₂⁺ + He Collisions

Pagination

viii, 62 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2002 Liqun An, All rights reserved.

Document Type

Dissertation - Restricted Access

File Type

text

Language

English

Subject Headings

Spectrum analysis
Helium

Thesis Number

T 8077

Print OCLC #

51112308

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

Recommended Citation

An, Liqun, "Ionization of helium by proton and H₂⁺ impact studied by projectile and recoil ion momentum spectroscopy" (2002). Doctoral Dissertations. 1427.
https://scholarsmine.mst.edu/doctoral_dissertations/1427