NASA NTRS · 19670000115
Liquid hydrogen densitometer utilizes open-ended microwave cavity
Abstract
Open-ended microwave cavity directly measures the density of flowing liquid, gaseous, or two-phase hydrogen. Its operation is based on derived relations between the cavity resonant frequency and the dielectric constant and density of hydrogen.
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Smetana, J., Wenger, N. C.. 1967-04-01. Liquid hydrogen densitometer utilizes open-ended microwave cavity. https://ntrs.nasa.gov/citations/19670000115
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