# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    D. R. Bosomworth.
    Far-infrared optical properties of CaF<sub>2</sub>, SrF<sub>2</sub>, BaF<sub>2</sub>, and CdF<sub>2</sub>.
    <a href="https://doi.org/10.1103/PhysRev.157.709"><i>Phys. Rev.</i>, <b>157</b>, 709 (1967)</a>
COMMENTS: |
    80 K
CONDITIONS:
    temperature: 80
DATA:
  - type: formula 4
    wavelength_range: 53 1000
    coefficients: 0 7.78 2 44.643 2 -4783.2 0 44.643 2
  - type: tabulated k
    data: |
        53.763 3.90E-02
        54.054 3.86E-02
        54.348 3.83E-02
        54.645 3.79E-02
        54.945 3.75E-02
        55.249 3.71E-02
        55.556 3.67E-02
        55.866 3.63E-02
        56.180 3.58E-02
        56.497 3.54E-02
        56.818 3.49E-02
        57.143 3.44E-02
        57.471 3.38E-02
        57.803 3.33E-02
        58.140 3.27E-02
        58.480 3.21E-02
        58.824 3.15E-02
        59.172 3.09E-02
        59.524 3.02E-02
        59.880 2.96E-02
        60.241 2.90E-02
        60.606 2.84E-02
        60.976 2.78E-02
        61.350 2.71E-02
        61.728 2.64E-02
        62.112 2.58E-02
        62.500 2.53E-02
        62.893 2.47E-02
        63.291 2.42E-02
        63.694 2.37E-02
        64.103 2.32E-02
        64.516 2.27E-02
        64.935 2.23E-02
        65.359 2.18E-02
        65.789 2.14E-02
        66.225 2.09E-02
        66.667 2.05E-02
        67.114 2.01E-02
        67.568 1.98E-02
        68.027 1.94E-02
        68.493 1.91E-02
        68.966 1.88E-02
        69.444 1.85E-02
        69.930 1.82E-02
        70.423 1.79E-02
        70.922 1.77E-02
        71.429 1.74E-02
        71.942 1.72E-02
        72.464 1.70E-02
        72.993 1.67E-02
        73.529 1.65E-02
        74.074 1.63E-02
        74.627 1.60E-02
        75.188 1.58E-02
        75.758 1.56E-02
        76.336 1.54E-02
        76.923 1.53E-02
        77.519 1.51E-02
        78.125 1.49E-02
        78.740 1.48E-02
        79.365 1.46E-02
        80.000 1.44E-02
        80.645 1.43E-02
        81.301 1.41E-02
        81.967 1.39E-02
        82.645 1.38E-02
        83.333 1.36E-02
        84.034 1.34E-02
        84.746 1.32E-02
        85.470 1.30E-02
        86.207 1.28E-02
        86.957 1.27E-02
        87.719 1.25E-02
        88.496 1.23E-02
        89.286 1.22E-02
        90.090 1.20E-02
        90.909 1.19E-02
        91.743 1.18E-02
        92.593 1.16E-02
        93.458 1.17E-02
        94.340 1.15E-02
        95.238 1.14E-02
        96.154 1.13E-02
        97.087 1.12E-02
        98.039 1.11E-02
        99.010 1.10E-02
        100.00 1.09E-02
        101.01 1.08E-02
        102.04 1.08E-02
        103.09 1.07E-02
        104.17 1.07E-02
        105.26 1.06E-02
        106.38 1.06E-02
        107.53 1.05E-02
        108.70 1.05E-02
        109.89 1.05E-02
        111.11 1.05E-02
        112.36 1.05E-02
        113.64 1.05E-02
        114.94 1.05E-02
        116.28 1.06E-02
        117.65 1.06E-02
        119.05 1.06E-02
        120.48 1.07E-02
        121.95 1.07E-02
        123.46 1.08E-02
        125.00 1.08E-02
        126.58 1.08E-02
        128.21 1.08E-02
        129.87 1.08E-02
        131.58 1.09E-02
        133.33 1.09E-02
        135.14 1.09E-02
        136.99 1.09E-02
        138.89 1.09E-02
        140.85 1.09E-02
        142.86 1.09E-02
        144.93 1.09E-02
        147.06 1.09E-02
        149.25 1.08E-02
        151.52 1.08E-02
        153.85 1.08E-02
        156.25 1.08E-02
        158.73 1.07E-02
        161.29 1.07E-02
        163.93 1.06E-02
        166.67 1.06E-02
        169.49 1.05E-02
        172.41 1.05E-02
        175.44 1.05E-02
        178.57 1.05E-02
        181.82 1.04E-02
        185.19 1.04E-02
        188.68 1.04E-02
        192.31 1.03E-02
        196.08 1.03E-02
        200.00 1.02E-02
        204.08 1.01E-02
        208.33 1.01E-02
        212.77 1.00E-02
        217.39 9.96E-03
        222.22 9.88E-03
        227.27 9.80E-03
        232.56 9.71E-03
        238.10 9.62E-03
        243.90 9.52E-03
        250.00 9.41E-03
        256.41 9.30E-03
        263.16 9.17E-03
        270.27 9.03E-03
        277.78 8.88E-03
        285.71 8.72E-03
        294.12 8.56E-03
        303.03 8.38E-03
        312.50 8.19E-03
        322.58 7.97E-03
        333.33 7.72E-03
        344.83 7.46E-03
        357.14 7.23E-03
        370.37 7.02E-03
        384.62 6.80E-03
        400.00 6.58E-03
        416.67 6.36E-03
        434.78 6.13E-03
        454.55 5.89E-03
        476.19 5.64E-03
        500.00 5.39E-03
        526.32 5.13E-03
        555.56 4.86E-03
        588.24 4.61E-03
        625.00 4.37E-03
        666.67 4.15E-03
        714.29 3.92E-03
        769.23 3.68E-03
        833.33 3.43E-03
        909.09 3.18E-03
        1000.0 2.93E-03