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Thesis

Simulation, Aufbau und Test eines Velocity-Map-Imaging-Spektrometers zur Untersuchung niederenergetischer Photoelektronen

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Froß,  Patrick
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

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Masterarbeit.pdf
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Citation

Froß, P. (2016). Simulation, Aufbau und Test eines Velocity-Map-Imaging-Spektrometers zur Untersuchung niederenergetischer Photoelektronen. Master Thesis, Ruprecht-Karls-Universität, Heidelberg.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-BB15-7
Abstract
On the basis of a 34-circle-ring electrode spectrometer, its utilization as a Velocity- Map-Imaging (VMI) spectrometer was systematically investigated. For this purpose, simulations of electron trajectories were carried out and evaluated using SIMION software. It is shown that it is possible to operate the spectrometer in VMI mode. The software optimizes the electrode potentials of the spectrometer with regard to the desired VMI imaging properties. In addition, the simulations provide first theoretical data on performance and resolution. In order to ionize a target gas, an ultra-fast titanium: sapphire femtosecond laser system is used. A first test of the apparatus was performed with argon.