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Accurate reference gas mixtures containing tritiated molecules: Their production and raman‐based analysis

Niemes, S. ORCID iD icon 1; Telle, H. H.; Bornschein, B. 1; Fasselt, L. 1; Größle, R. 1; Priester, F. 1; Schlösser, M. ORCID iD icon 1; Sturm, M. ORCID iD icon 1; Welte, S. 1; Zeller, G. ORCID iD icon 1
1 Karlsruher Institut für Technologie (KIT)


Highly accurate, quantitative analyses of mixtures of hydrogen isotopologues—both the stable species, H$_{2}$, D$_{2}$2, and HD, and the radioactive species, T$_{2}$, HT, and DT—are of great importance in fields as diverse as deuterium–tritium fusion, neutrino mass measurements using tritium β-decay, or for photonuclear experiments in which hydrogen–deuterium targets are used. In this publication we describe a production, handling, and analysis facility capable of fabricating well-defined gas samples, which may contain any of the stable and radioactive hydrogen isotopologues, with sub-percent accuracy for the relative species concentrations. The production is based on precise manometric gas mixing of H$_{2}$, D$_{2}$, and T$_{2}$. The heteronuclear isotopologues HD, HT, and DT are generated via controlled, in-line catalytic reaction or by β-induced self-equilibration, respectively. The analysis was carried out using an in-line intensity- and wavelength-calibrated Raman spectroscopy system. This allows for continuous monitoring of the composition of the circulating gas during the self-equilibration or catalytic evolution phases. During all procedures, effects, such as exchange reactions with wall materials, were considered with care. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000137744
Veröffentlicht am 22.09.2021
DOI: 10.3390/s21186170
Zitationen: 7
Web of Science
Zitationen: 7
Zitationen: 8
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1424-8220
KITopen-ID: 1000137744
HGF-Programm 51.13.02 (POF IV, LK 01) KATRIN
Erschienen in Sensors
Verlag MDPI
Band 21
Heft 18
Seiten 6170
Schlagwörter Raman spectroscopy; tritiated molecules; gas mixing; β-induced self-equilibration; tritiated reference samples
Nachgewiesen in Dimensions
Web of Science
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