Hannover 2013 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 11: Infrared and Microwave Spectroscopy
MO 11.5: Vortrag
Dienstag, 19. März 2013, 12:00–12:15, F 107
First calibration of TApIR (Tritium Absorption IR-spectroscopy) — •Robin Grössle and Alexander Beck — Karlsruher Institut für Technologie (KIT), Tritium Labor Karlsruhe
Future fusion facilities like ITER and Demo will have up to 3 kg of tritium and deuterium circulating in their fuel cycle. The estimated throughput will be about 1 kg per hour. One important capability of these tritium fuel cycles is to reprocess unburned fuel and to purify tritium and deuterium. For hydrogen isotopologue (H2, D2, T2, HD, HT and DT =Q2) processing the Isotope Separation System (ISS) is available, using a cascade of cryogenic distillation columns, which operate at 20 to 30 K, to concentrate the T2 .
IR-spectroscopy has been selected to proof its capability as a reliable, reproducible, fast and non invasive analytic technique for composition analysis of liquid hydrogen mixtures.
In this talk first calibration measurements of the TApIR experiment where Q2 can be liquefied and measured using a FTIR-spectrometer will be presented. For this purpose calibrated gas mixtures in combination with methods like LASER Raman spectroscopy (LARA) and quadrupole mass spectrometry (QMS) were used. The disadvantage of these methods is that they are not able to measure directly in the liquid phase. The preliminary results are very promising to bring TApIR on its way to a Tritium accountancy method for fusion.