Title |
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Surface Temperature Dependence of Hydrogen Ortho-Para Conversion on Amorphous Solid Water
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Accessrights |
open access |
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©2016 American Physical Society
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Description |
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Abstract
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The surface temperature dependence of the ortho-to-para conversion of H-2 on amorphous solid water is first reported. A combination of photostimulated desorption and resonance-enhanced multiphoton ionization techniques allowed us to sensitively probe the conversion on the surface of amorphous solid water at temperatures of 9.2-16 K. Within a narrow temperature window of 8 K, the conversion time steeply varied from similar to 4.1 x 10(3) to similar to 6.4 x 10(2) s. The observed temperature dependence is discussed in the context of previously suggested models and the energy dissipation process. The two-phonon process most likely dominates the conversion rate at low temperatures.
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Publisher |
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American Physical Society (APS)
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Date |
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Language |
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Resource Type |
journal article |
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VoR |
Identifier |
HDL
http://hdl.handle.net/2115/62697
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Relation |
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isIdenticalTo
DOI
https://doi.org/10.1103/PhysRevLett.116.253201
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PMID
27391719
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Journal |
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Physical Review Letters
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Volume Number116
Issue Number25
Page Start253201
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File |
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Oaidate |
2023-07-26 |