Doctoral Dissertations

Abstract

"Doubly-differential cross-sections for the single ionization of molecular hydrogen by 75 keV proton impact have been measured as a function of the projectile scattering angle and energy loss and compared to available theoretical models. Interference structures are directly observed in the scattering angular dependence of the DDCS. The phase angle appears to be most sensitive to the projectile angle but not as sensitive to the electron energy, suggesting that the projectile - target nucleus interaction plays a central role in the interference. The large-angle structures disappear at electron speeds near the projectile speed. This may be due to a focusing effect introduced by post-collision interaction. Furthermore, our data suggest that for a given scattering angle, the ionization amplitude depends strongly on the molecular orientation, relative to the projectile beam axis, with transverse orientation favored at small angles and longitudinal orientation at large angles"--Abstract, page iii.

Advisor(s)

Schulz, Michael, 1959-

Committee Member(s)

Story, J. Greg
Madison, Don H.
DuBois, R. D. (Robert D.), 1951-
Henthorn, Kimberly H.

Department(s)

Physics

Degree Name

Ph. D. in Physics

Sponsor(s)

National Science Foundation (U.S.)

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2009

Pagination

x, 75 pages

Note about bibliography

Includes bibliographical references (pages 70-74).

Rights

© 2009 Jason S. Alexander, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Cross sections (Nuclear physics)
Electron impact ionization
Hydrogen
Proton beams

Thesis Number

T 9508

Print OCLC #

653129346

Electronic OCLC #

319436537

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