Abstract
The low-temperature heat release in copper due to ortho-para conversion in hydrogen bubbles is investigated. Deviations from a model of “free solid hydrogen” are observed: a more intense heat release atT≥10 K and a “rapid” (10 h) heat release after cooling to 1.3 K. The experimental results can be explained by the assumption of autocatalytic conversion in the bulk and the catalytic influence of the bubble surface.
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Koláč, M., Neganov, B.S., Sahling, A. et al. Ortho-para conversion in hydrogen bubbles in copper. J Low Temp Phys 63, 459–477 (1986). https://doi.org/10.1007/BF00681493
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DOI: https://doi.org/10.1007/BF00681493