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Stabilization of H and D atoms in Aggregates of Kr Nanoclusters Immersed in Superfluid Helium

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Abstract

Impurity–helium condensates containing krypton atoms and also atoms and molecules of hydrogen isotopes have been studied via an electron spin resonance (ESR) technique. Analysis of the ESR spectra shows that most of the H and D atoms reside in molecular layers (H2 or D2) formed on the surfaces of Kr nanoclusters. The thickness of the molecular films was found to determine the rates of recombination of the atoms into molecules, with atoms in the thinner films recombining much more slowly. Very large average concentrations were obtained for H atoms (1019 cm−3) and D atoms (3⋅1019 cm−3) in these experiments.

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Authors and Affiliations

  1. Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA

    R. E. Boltnev, E. P. Bernard, J. Järvinen, V. V. Khmelenko & D. M. Lee

  2. Branch of Institute of Energy Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia

    R. E. Boltnev & I. N. Krushinskaya

  3. Physics Department, Texas A&M University, College Station, TX, 77845, USA

    D. M. Lee

Authors
  1. R. E. Boltnev
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  2. E. P. Bernard
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  3. J. Järvinen
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  4. I. N. Krushinskaya
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  5. V. V. Khmelenko
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  6. D. M. Lee
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Correspondence to D. M. Lee.

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Boltnev, R.E., Bernard, E.P., Järvinen, J. et al. Stabilization of H and D atoms in Aggregates of Kr Nanoclusters Immersed in Superfluid Helium. J Low Temp Phys 158, 468–477 (2010). https://doi.org/10.1007/s10909-009-9961-4

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  • DOI: https://doi.org/10.1007/s10909-009-9961-4

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