Abstract
The behavior of3He and4He in a one-dimensional channel (≈10 Å in diameter) of K-L zeolite has been studied by measuring isosteric heat of sorption and heat capacities in the temperature range 0.1–1.5 K as a function of the amount of helium adsorbed. At smaller amounts, below 40% of full channel, the He adatoms seem to be bound on the potential minima of the wall. However, at larger amounts adsorbed, between 40 and 70%, a one-dimensional translation of the excess adatoms over 40% is suggested by the results that the molar heat capacities atT≳1 K are about the magnitudeR/2 of a one-dimensional gas and that the heat of sorption atT=0 K is almost constant.
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Research Institute for Catalysis, Hokkaido University, Sapporo, Hokkaido, Japan.
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Kato, H., Ishioh, K., Wada, N. et al. Motional states of3He and4He in the one-dimensional channels of K-L zeolite. J Low Temp Phys 68, 321–334 (1987). https://doi.org/10.1007/BF00682300
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DOI: https://doi.org/10.1007/BF00682300