Date of Award
12-1983
Degree Name
Master of Arts
Department
Physics
First Advisor
Dr. John A. Tanis
Second Advisor
Dr. E. M. Bernstein
Third Advisor
Dr. L. D. Oppliger
Access Setting
Masters Thesis-Open Access
Abstract
Projectile K x-ray yields have been measured as a function of target thickness (2.0-150 μg/ cm2) for 20-54 MeV Sq+ ions incident on this carbon foils using the WMU EN tandem Van de Graaff accelerator. The measured K x-ray yields were fond to increase for thicknesses < 15 μg/cm2 and decease for thicknesses > 15 μg/cm2 . The increasing yield is attributed to L-Shell non-equilibrium as the ion traverses the foil, while the decreasing yield is attributed to K-shell non-equilibrium. Analysis of the data was performed by modifying the "two-component" model of Betz et al. to include the effect of L-shell non-equilibrium. This model allows parametrization of the measured yields in terms of five parameters which are combinations of fundamental collision probabilities governing the projectile-target interaction. Least-squares fits to the data for each beam investigated yield the projectile energy dependence of the five parameters.
Recommended Citation
Shippy, Donald Solon, "Non-Equilibrium L-Shell Effects on K-Shell X Rays for 20-54 MeV S+C Collisions" (1983). Masters Theses. 1658.
https://scholarworks.wmich.edu/masters_theses/1658