# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: "C. R. Mansfield and E. R. Peck. Dispersion of helium, <a href=\"https://doi.org/10.1364/JOSA.59.000199\"><i>J. Opt. Soc. Am.</i> <b>59</b>, 199-203 (1969)</a>"
COMMENTS: "Standard conditions: 0 °C, 760 torr (101.325 kPa)."
DATA:
  - type: formula 6
    range: 0.4801 2.0586
    coefficients: 0 0.01470091 423.98
SPECS:
    n_is_absolute: true
    λ_is_vacuum: true
    temperature: 0 °C
    pressure: 101325 Pa
