Gaseous mixtures of hydrogen, deuterium, and helium-3 produced by a partial-pressure mixing system

Abstract

A partial-pressure gas mixing sytem was modified to prepare high-accuracy hydrogen, deuterium, and helium-3 gas mixtures as qualification standards for acceptance tests to be performed on a mass spectrometer. Accuracies (3 sigma) of 0.22% relative or less are estimated for total components.