A1 Refereed original research article in a scientific journal
Studies of nuclear polarization of hydrogen atoms embedded in solid molecular hydrogen and hydrogen deuteride films
Authors: S. Sheludiakov, D. M. Lee, V. V. Khmelenko, J. Ahokas, J. Järvinen, S. Vasiliev
Publisher: AMER INST PHYSICS
Publication year: 2020
Journal: Low Temperature Physics
Journal name in source: LOW TEMPERATURE PHYSICS
Journal acronym: LOW TEMP PHYS+
Article number: 139
Volume: 46
Issue: 2
Number of pages: 6
ISSN: 1063-777X
eISSN: 1090-6517
DOI: https://doi.org/10.1063/10.0000532
Web address : http://www.doi.org/10.1063/10.0000532
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/46860630
We report on an electron-spin resonance study of nuclear polarization of hydrogen atoms embedded in solid H-2 and HD films at temperatures 0.1-1.5 K and in a high magnetic field of 4.6 T. Similar to our previous work [Phys. Rev. Lett. 122, 225301 (2019)], we observed a build-up of the spontaneously (p similar or equal to 0.35) and highly (p similar or equal to 0.75) nuclear polarized phases of H atoms in the as-deposited H-2 films. However, we did not obtain an enhanced nuclear polarization of H atoms in the regions of their small local concentration. We also failed to observe enhanced nuclear polarization for H atoms in the annealed H-2 films as well as in the as-deposited HD sample. These observations tend to support our previous explanation for the build-up of high nuclear polarization due to the formation of weakly-bound triplet H-2 molecules. Published under license by AIP Publishing.
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