By Magnus Schlösser
This thesis studies significant contributions to constructing and enforcing new laser-spectroscopic precision instruments to consistently computer screen the isotope content material of the windowless gaseous tritium resource of KATRIN. the tactic of selection, Raman spectroscopy, is best for in-situ tracking of all six hydrogen isotopologues. In a sequence of gorgeous experiments the writer bought autonomous novel calibration equipment, first in keeping with a comparability of experimental Raman depolarization ratios with corresponding quantum-chemical calculations, and moment on a fuel sampling procedure. either tools yield constant cross-calibration effects and, in addition to yielding advancements in precision, could be of significant value in lowering systematic results in long term neutrino mass measurements. The tools constructed during this thesis even have nice strength to additional expand the functions of Raman spectroscopy to check prolonged resources comparable to in atmospheric physics.
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