Supercooling of Hydrogen on Template Materials to Deterministically Seed Ignition-Quality Solid Fuel Layers

Shin, S. J.; Zepeda-Ruiz, L. A.; Lee, J. R.  I.; Baxamusa, S. H.

doi:10.13182/FST15-212

Title: Supercooling of Hydrogen on Template Materials to Deterministically Seed Ignition-Quality Solid Fuel Layers

Journal Article · Thu Sep 01 00:00:00 EDT 2016 · Fusion Science and Technology

DOI:https://doi.org/10.13182/FST15-212· OSTI ID:1341942

Shin, S. J. ^[1]; Zepeda-Ruiz, L. A. ^[1]; Lee, J. R. I. ^[1]; Baxamusa, S. H. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

In this study, we explored templating effects of various materials for hydrogen (H₂ and D₂) solidification by measuring the degree of supercooling required for liquid hydrogen to solidify below each triple point. The results show high supercooling (>100 mK) for most metallic, covalent, and ionic solids, and low supercooling (<100 mK) for van der Waals (vdW) solids. We attribute the low supercooling of vdW solids to the weak interaction of the substrate and hydrogen. Highly ordered pyrolytic graphite showed the lowest supercooling among materials that are solid at room temperature, but did not exhibit a templating effect within a fill-tube and capsule assembly.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1341942

Report Number(s):: LLNL-JRNL-705308; TRN: US1701670

Journal Information:: Fusion Science and Technology, Vol. 70, Issue 2; ISSN 1536-1055

Publisher:: American Nuclear SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 4 works

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References (12)

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Cited By (1)

Effect of wetting on nucleation and growth of D ₂ in confinement Zepeda-Ruiz, L. A.; Sadigh, B.; Shin, S. J. The Journal of Chemical Physics, Vol. 148, Issue 13 https://doi.org/10.1063/1.5020068	journal	April 2018

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