Abstract
The ultrasonic attenuation and dispersion of quench–condensed H 2 films was measured for ortho–concentrations ranging from x = 75% to x = 32%. Orientational ordering was observed for all ortho–H 2 concentrations. The obtained results are compared to recent specific heat experiments by Birmingham et al.
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Eschenröder, K., Weiss, G. Ultrasonic Study of the Ordering of ortho–Hydrogen in Quench–Condensed Films. Journal of Low Temperature Physics 111, 407–412 (1998). https://doi.org/10.1023/A:1022200122909
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DOI: https://doi.org/10.1023/A:1022200122909