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Analytic of tritium-containing gaseous species at the Tritium Laboratory Karlsruhe

R Lässer, C Caldwell-Nichols, L Dörr, M Glugla, R.-D Penzhorn2001年Fusion Engineering and DesignIF 1.7出版社

AbstractAt the Tritium Laboratory Karlsruhe (TLK) laser Raman spectroscopy, gas chromatography, mass spectroscopy, calorimetry and ionisation chambers are used to determine the composition of tritium gas mixtures. For the first time a laser Raman experiment was assembled with an actively controlled resonator which yields a 50 times higher Raman signal and with all components (laser, optics, Raman cell and spectrometer) installed inside a glove box. Three gas chromatographs, each with up to six detectors, can determine the gases and their tritiated fractions expected in fusion devices down to the sub-ppm range. Tritium in solids, liquids and gases is determined by means of three calorimeters with a dynamic ranges of up to five orders of magnitude and a lower detection limit of 1 GBq. Since any of these techniques has its shortcomings the best analytical approach is to analyse a sample by more than one method.

日本語訳

カールスルーエトリチウム研究所(TLK)では、レーザーラマン分光法、ガスクロマトグラフィー、質量分光法、熱量測定、および電離箱を用いて、トリチウムガス混合物の組成を測定している。能動共振器を備えたレーザーラマン実験装置が初めて組み立てられ、これによりラマン信号は50倍に増強され、すべての構成要素(レーザー、光学系、ラマンセル、分光計)がグローブボックス内に設置された。各々最大6つの検出器を備えた3台のガスクロマトグラフにより、核融合装置で想定されるガスおよびそのトリチウム化化合物を、サブppm範囲まで測定することができる。固体、液体、気体中のトリチウムは、3台の熱量計によって測定され、これらは最大5桁のダイナミックレンジと1GBqの下限検出限界を有する。いずれの手法にも欠点があるため、試料は複数の方法で分析することが最良のアプローチである。

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