Construction and Testing of a New Atomic Physics Beam Line at the Western Michigan University Accelerator Laboratory

Publication Year:
1985
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Repository URL:
https://scholarworks.wmich.edu/masters_theses/1379
Author(s):
Hollerman, William Andrew
thesis / dissertation description
A new beam line containing a differentially-pumped gas cell and charge state analyzing magnet was constructed for the purpose of measuring a wide variety of atomic inner-shell processes, such as excitation, ionization, and charge transfer. The completed system will be able to measure these individual atomic processes using coincidence techniques. Initial testing of the beam line was performed using 40MeV S+7+Ar collisions to determine the effect of the collimating slit size on the measured x-ray cross sections. These measurements showed that the slip size on the measured x-ray cross sections. These measurements showed that the slit size affects the x-ray cross section by a maximum of ~6% between 4mm2 and >100mm2. X-ray production was measured for 30-60 MeV S+13+Ar collisions to determine the relationship between cross section and beam energy. The results show that the x-ray cross sections were found to be about four times smaller than expected bases on data obtained in another experiment.