Honors Program


Document Type


Date of this Version

Spring 3-11-2020


Kruse, J. Characterization of a Trochoidal Electron Monochromator. Undergraduate Honors Thesis. University of Nebraska-Lincoln. March 2020.


Copyright Jesse Kruse 2020.


This thesis presents a quantitative study of a trochoidal electron monochromator and attempts to observe the 2p^53p^2 resonance in neon. A detailed description of the experimental apparatus, including the electron beam system, the vacuum system, and the light analysis system, is presented first. Then, we discuss the theory of how the electron beam is monochromatized, how we measured monochomatization, and how we analyze the light being emitted from the collision cell. The light analysis system is capable of accurately measuring the relative Stokes parameters for any polarization of light, and the electron beam system is capable of producing electron beams with transmitted currents ranging from 1 nA to 500 nA with varying degrees of monochromatization. Retarding field analysis yielded substandard energy width measurements of our beam so we looked to the neon resonance as a secondary means of measurement. Despite our best efforts, we were unable to observe light from this resonance above background sources. A number of reasons are proposed to explain this failure as well as possible improvements to the experimental apparatus.