Advanced In-situ Diagnostics for Multicomponent Gas Analysis and Material Aging Part 2: Compact Determination of Hydrogen Isotopes

Technical Report · Thu Sep 19 04:00:00 EDT 2019

DOI:https://doi.org/10.2172/1562616· OSTI ID:1562616

Robinson, David B. ^[1]

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1. Sandia National Laboratories (SNL-CA), Livermore, CA (United States)

This report has been accepted for publication in the journal Fusion Science and Technology, in the special issue associated with the Tritium 2016 conference, where the work was presented. Scanning calorimetry of a confined, reversible hydrogen sorbent material has been previously proposed as a method to determine compositions of unknown mixtures of diatomic hydrogen isotopologues and helium. Application of this concept could result in greater process knowledge during the handling of these gases. Previously published studies have focused on mixtures that do not include tritium. This paper focuses on modeling to predict the effect of tritium in mixtures of the isotopologues on a calorimetry scan. The model predicts that tritium can be measured with a sensitivity comparable to that observed for hydrogen-deuterium mixtures, and that under some conditions, it may be possible to determine the atomic fractions of all three isotopes in a gas mixture.

• Research Organization: Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1562616
• Report Number(s): SAND--2016-9455R; 647645
• Country of Publication: United States
• Language: English

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