Producing and quantifying enriched para- H2

Brian A. Tom, Siddhartha Bhasker, Yuki Miyamoto, Takamasa Momose, Benjamin J. McCall

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


The production of enriched para- H2 is useful for many scientific applications, but the technology for producing and measuring para- H2 is not yet widespread. In this note and in the accompanying auxiliary material, we describe the design, construction, and use of a versatile standalone converter that is capable of producing para- H2 enrichments of up to 99.99% at continuous flow rates of up to 0.4 SLM. We also discuss para- H2 storage and back conversion rates, and improvements to three techniques (thermal conductance, NMR, and solid hydrogen impurity spectroscopy) used to quantify the para- H2 enrichment.

Original languageEnglish
Article number016108
JournalReview of Scientific Instruments
Issue number1
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation


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