# 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: 56 1000
    coefficients: 0 6.56 2 52.910 2 -6038.5 0 52.910 2
  - type: tabulated k
    data: |
        56.497 5.96E-02
        56.818 5.24E-02
        57.143 4.96E-02
        57.471 4.78E-02
        57.803 4.71E-02
        58.140 4.65E-02
        58.480 4.60E-02
        58.824 4.54E-02
        59.172 4.36E-02
        59.524 4.06E-02
        59.880 3.77E-02
        60.241 3.46E-02
        60.606 3.14E-02
        60.976 2.86E-02
        61.350 2.60E-02
        61.728 2.37E-02
        62.112 2.18E-02
        62.500 2.00E-02
        62.893 1.84E-02
        63.291 1.69E-02
        63.694 1.56E-02
        64.103 1.48E-02
        64.516 1.41E-02
        64.935 1.36E-02
        65.359 1.31E-02
        65.789 1.27E-02
        66.225 1.23E-02
        66.667 1.20E-02
        67.114 1.18E-02
        67.568 1.18E-02
        68.027 1.17E-02
        68.493 1.14E-02
        68.966 1.11E-02
        69.444 1.08E-02
        69.930 1.05E-02
        70.423 1.02E-02
        70.922 9.94E-03
        71.429 9.73E-03
        71.942 9.53E-03
        72.464 9.34E-03
        72.993 9.15E-03
        73.529 8.97E-03
        74.074 8.81E-03
        74.627 8.65E-03
        75.188 8.51E-03
        75.758 8.37E-03
        76.336 8.24E-03
        76.923 8.11E-03
        77.519 7.99E-03
        78.125 7.89E-03
        78.740 7.79E-03
        79.365 7.70E-03
        80.000 7.60E-03
        80.645 7.50E-03
        81.301 7.41E-03
        81.967 7.31E-03
        82.645 7.22E-03
        83.333 7.13E-03
        84.034 7.05E-03
        84.746 6.97E-03
        85.470 6.90E-03
        86.207 6.82E-03
        86.957 6.73E-03
        87.719 6.65E-03
        88.496 6.56E-03
        89.286 6.48E-03
        90.090 6.39E-03
        90.909 6.31E-03
        91.743 6.23E-03
        92.593 6.15E-03
        93.458 6.06E-03
        94.340 5.98E-03
        95.238 5.90E-03
        96.154 5.82E-03
        97.087 5.75E-03
        98.039 5.66E-03
        99.010 5.52E-03
        100.00 5.36E-03
        101.01 5.26E-03
        102.04 5.22E-03
        103.09 5.18E-03
        104.17 5.14E-03
        105.26 5.09E-03
        106.38 5.03E-03
        107.53 4.95E-03
        108.70 4.87E-03
        109.89 4.78E-03
        111.11 4.69E-03
        112.36 4.66E-03
        113.64 4.68E-03
        114.94 4.70E-03
        116.28 4.71E-03
        117.65 4.71E-03
        119.05 4.69E-03
        120.48 4.65E-03
        121.95 4.59E-03
        123.46 4.49E-03
        125.00 4.37E-03
        126.58 4.24E-03
        128.21 4.10E-03
        129.87 3.96E-03
        131.58 3.82E-03
        133.33 3.69E-03
        135.14 3.56E-03
        136.99 3.44E-03
        138.89 3.35E-03
        140.85 3.26E-03
        142.86 3.18E-03
        144.93 3.12E-03
        147.06 3.07E-03
        149.25 3.05E-03
        151.52 3.03E-03
        153.85 3.02E-03
        156.25 3.04E-03
        158.73 3.09E-03
        161.29 3.16E-03
        163.93 3.25E-03
        166.67 3.38E-03
        169.49 3.64E-03
        172.41 4.01E-03
        175.44 4.44E-03
        178.57 4.84E-03
        181.82 5.14E-03
        185.19 5.28E-03
        188.68 5.31E-03
        192.31 5.28E-03
        196.08 5.22E-03
        200.00 5.14E-03
        204.08 5.05E-03
        208.33 4.96E-03
        212.77 4.86E-03
        217.39 4.75E-03
        222.22 4.62E-03
        227.27 4.46E-03
        232.56 4.28E-03
        238.10 4.11E-03
        243.90 3.96E-03
        250.00 3.84E-03
        256.41 3.73E-03
        263.16 3.63E-03
        270.27 3.53E-03
        277.78 3.44E-03
        285.71 3.35E-03
        294.12 3.27E-03
        303.03 3.18E-03
        312.50 3.09E-03
        322.58 3.01E-03
        333.33 2.93E-03
        344.83 2.86E-03
        357.14 2.78E-03
        370.37 2.72E-03
        384.62 2.67E-03
        400.00 2.62E-03
        416.67 2.58E-03
        434.78 2.54E-03
        454.55 2.50E-03
        476.19 2.47E-03
        500.00 2.42E-03
        526.32 2.37E-03
        555.56 2.32E-03
        588.24 2.27E-03
        625.00 2.22E-03
        666.67 2.18E-03
        714.29 2.16E-03
        769.23 2.16E-03
        833.33 2.18E-03
        909.09 2.21E-03
        1000.0 2.26E-03