THE SECOND VIRIAL COEFFICIENT OF ORTHO AND PARA HYDROGEN AT LIQUID HYDROGEN TEMPERATURES
A method is described for measuring the difference in the second virial coefficient of the equation of stnte between the ortho and para modifications of H/sub 2/ and D/sub 2/ with a sensitivity of the order of 3 x 10/sup -6/ amagat, corresponding to a relative change in the virial coefficient of H/sub 2/ of the order of 5 x 10/sup -4/. A difference of abent 1% in the virial coefficient was found for para and normal H/sub 2/, the normal H/sub 2/ having the larger absolute value. The change appeared to be linear in the concentration. No measurable effect was found in the case of D/sub 2/. (auth)
- Research Organization:
- Kamerlingh Onnes Laboratorium, Leiden
- NSA Number:
- NSA-14-013742
- OSTI ID:
- 4190676
- Journal Information:
- Physica, Journal Name: Physica Vol. Vol: 26
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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