Berlin 2014 – scientific programme
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MO: Fachverband Molekülphysik
MO 7: Experimental Techniques 1
MO 7.8: Talk
Tuesday, March 18, 2014, 12:15–12:30, BEBEL SR144
IR spectroscopy on liquid hydrogen isotopologues with the Tritium Absorption Infrared (TApIR) experiment — •Sebastian Mirz, Robin Größle, and Alexander Kraus — Karlsruhe Institute of Technology (KIT), Institute of Technical Physics (ITEP), Tritium Laboratory Karlsruhe (TLK)
For the purification of the fusion plasma facilities like ITER and DEMO will circulate tritium and deuterium with a throughput of several kg per hour in their fusion fuel cycle. One important part of this fusion fuel cycle is the isotope separation system (ISS) using cryogenic distillation, which is under development at the Tritium Laboratory Karlsruhe (TLK).
The cryogenic distillation column of the ISS is able to separate mixtures of all six hydrogen isotopologues H2, HD, D2, HT, DT and T2. At the bottom of the cryogenic distillation column liquid tritium is accumulated. For monitoring the separation process, an inline and real-time analysis method able to measure the isotopologic concentration, is needed. As a test experiment for this analysis method the cryogenic sample cell of the TApIR experiment has been set up to simulate the conditions of the cryogenic distillation column. The TApIR experiment is able to liquefy hydrogen isotopologues at temperatures around 20 K and analyse them using infrared (IR) absorption spectroscopy. To deduce the gas composition from the recorded IR spectra calibration data of measurements with known mixtures is required. This talk will introduce the procedure for such a calibration measurement and present results with equilibrated inactive hydrogen isotopologue mixtures.