Speed of Sound Measurement of Hydrogen Isotopologues Containing Tritium for Reference Gas Sample Verification

Figures & data

Fig. 1. Sketch of the TRIHYDE facility for the production of reference gas samples containing tritiated molecules. For inline gas analysis, the loop includes a BGA, a BIXS, and a LARA.

Fig. 2. Effective SoS measurement in equilibrated gas mixtures with varying ${\mathrm{T}}_2$ content.

TABLE I Derived SoS for Pure Tritiated Isotopologues at NTP Conditions*

Isotopologue	SoS Ideal Gas (m/s)	Experimentally Derived SoS (m/s)
${\mathrm{T}}_2$	751.1	754(22)
HT	923.3	929(35)
DT	825.7	838(43)

*The fundamental physical constants as well as the atomic weights for calculating the SoS within the scope of an ideal gas were taken from Refs. [12,13].

P. J. MOHR, D. B. NEWELL, and B. N. TAYLOR, “CODATA Recommended Values of the Fundamental Physical Constants: 2014,” Rev. Mod. Phys., 88, 3, 035009 (2016); https://doi.org/10.1103/RevModPhys.88.035009.

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A. M. H. van der VEEN et al., “Interpretation and Use of Standard Atomic Weights (IUPAC Technical Report),” Pure Appl. Chem., 93, 5, 629 (2021); https://doi.org/10.1515/pac-2017-1002.

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