Effect of Impurities on Ions in Tritium

In this study, the authors developed an approach for accurately quantifying the helium content in a gas mixture also containing hydrogen and methane using commercially available getters. The authors performed a systematic study to examine how both H2 and CH4 can be removed simultaneously from the mixture using two SAES St 172® getters operating at different temperatures. The remaining He within the gas mixture can then be measured directly using a capacitance manometer. The optimum combination involved operating one getter at 650 °C to decompose the methane, and the second at 110 °C to remove the hydrogen. This approach eliminated the need to reactivate the getters between measurements, thereby enabling multiple measurements to be made within a short time interval, with accuracy better than 1%. The authors anticipate that such an approach will be particularly useful for quantifying the He-3 in mixtures that include tritium, tritiated methane, and helium-3. The presence of tritiated methane, generated by tritium activity, often complicates such measurements.

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Radiochemical Reaction Studies of Tritium Mixed Gases by Laser Raman Spectroscopy at TSTA

Sherman

Taylor

Bartlit

et al. 1992

Fusion Technology

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Effect of Impurities on Ions in Tritium

Cited by 4 publications

References 13 publications

Experimental and computational determination of deuterium–tritium mixtures with a small volume ionization chamber

Experimental and computational determination of deuterium–tritium mixtures with a small volume ionization chamber

Gettering of hydrogen and methane from a helium gas mixture

Radiochemical Reaction Studies of Tritium Mixed Gases by Laser Raman Spectroscopy at TSTA

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