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Table A.1
Cauchy’s equation coefficients.
| Gas composition | A1 × 10-5 | B1 × 105 |
| (Å2) | ||
|
|
||
| Hydrogen | 13.60 | 7.7 |
| Helium | 3.48 | 2.3 |
| Argon | 27.92 | 5.6 |
| Nitrogen | 29.19 | 7.7 |
| Oxygen | 26.63 | 5.1 |
| Methane | 42.60 | 14.4 |
| Ethane | 73.65 | 9.1 |
| Air | 28.79 | 5.7 |
Notes. Values are given for gases at a temperature of 0 °C and pressure of 1 atm (Born & Wolf 1999; Griffiths 1999).
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