# 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: |
    300 K
CONDITIONS:
    temperature: 300
DATA:
  - type: formula 4
    wavelength_range: 52 1000
    coefficients: 0 6.63 2 38.911 2 -3088.6 0 38.911 2
  - type: tabulated k
    data: |
        52.083 7.07E-02
        52.356 6.96E-02
        52.632 6.85E-02
        52.910 6.74E-02
        53.191 6.63E-02
        53.476 6.52E-02
        53.763 6.42E-02
        54.054 6.33E-02
        54.348 6.24E-02
        54.645 6.13E-02
        54.945 6.03E-02
        55.249 5.94E-02
        55.556 5.85E-02
        55.866 5.77E-02
        56.180 5.68E-02
        56.497 5.60E-02
        56.818 5.54E-02
        57.143 5.48E-02
        57.471 5.42E-02
        57.803 5.36E-02
        58.140 5.29E-02
        58.480 5.23E-02
        58.824 5.18E-02
        59.172 5.13E-02
        59.524 5.09E-02
        59.880 5.05E-02
        60.241 5.01E-02
        60.606 4.98E-02
        60.976 4.94E-02
        61.350 4.91E-02
        61.728 4.88E-02
        62.112 4.85E-02
        62.500 4.82E-02
        62.893 4.80E-02
        63.291 4.77E-02
        63.694 4.75E-02
        64.103 4.73E-02
        64.516 4.71E-02
        64.935 4.69E-02
        65.359 4.67E-02
        65.789 4.65E-02
        66.225 4.64E-02
        66.667 4.63E-02
        67.114 4.62E-02
        67.568 4.62E-02
        68.027 4.62E-02
        68.493 4.62E-02
        68.966 4.61E-02
        69.444 4.61E-02
        69.930 4.61E-02
        70.423 4.61E-02
        70.922 4.61E-02
        71.429 4.61E-02
        71.942 4.62E-02
        72.464 4.62E-02
        72.993 4.63E-02
        73.529 4.64E-02
        74.074 4.65E-02
        74.627 4.67E-02
        75.188 4.68E-02
        75.758 4.69E-02
        76.336 4.71E-02
        76.923 4.72E-02
        77.519 4.72E-02
        78.125 4.73E-02
        78.740 4.74E-02
        79.365 4.75E-02
        80.000 4.75E-02
        80.645 4.76E-02
        81.301 4.77E-02
        81.967 4.77E-02
        82.645 4.77E-02
        83.333 4.77E-02
        84.034 4.77E-02
        84.746 4.77E-02
        85.470 4.77E-02
        86.207 4.77E-02
        86.957 4.77E-02
        87.719 4.77E-02
        88.496 4.76E-02
        89.286 4.76E-02
        90.090 4.74E-02
        90.909 4.73E-02
        91.743 4.71E-02
        92.593 4.70E-02
        93.458 4.68E-02
        94.340 4.67E-02
        95.238 4.65E-02
        96.154 4.64E-02
        97.087 4.62E-02
        98.039 4.60E-02
        99.010 4.57E-02
        100.00 4.55E-02
        101.01 4.52E-02
        102.04 4.49E-02
        103.09 4.46E-02
        104.17 4.43E-02
        105.26 4.40E-02
        106.38 4.36E-02
        107.53 4.32E-02
        108.70 4.28E-02
        109.89 4.24E-02
        111.11 4.20E-02
        112.36 4.16E-02
        113.64 4.13E-02
        114.94 4.09E-02
        116.28 4.06E-02
        117.65 4.02E-02
        119.05 3.97E-02
        120.48 3.94E-02
        121.95 3.90E-02
        123.46 3.87E-02
        125.00 3.84E-02
        126.58 3.82E-02
        128.21 3.80E-02
        129.87 3.78E-02
        131.58 3.77E-02
        133.33 3.76E-02
        135.14 3.75E-02
        136.99 3.74E-02
        138.89 3.72E-02
        140.85 3.70E-02
        142.86 3.68E-02
        144.93 3.65E-02
        147.06 3.62E-02
        149.25 3.59E-02
        151.52 3.55E-02
        153.85 3.52E-02
        156.25 3.48E-02
        158.73 3.44E-02
        161.29 3.40E-02
        163.93 3.35E-02
        166.67 3.31E-02
        169.49 3.26E-02
        172.41 3.20E-02
        175.44 3.15E-02
        178.57 3.10E-02
        181.82 3.05E-02
        185.19 3.01E-02
        188.68 2.97E-02
        192.31 2.93E-02
        196.08 2.89E-02
        200.00 2.84E-02
        204.08 2.79E-02
        208.33 2.73E-02
        212.77 2.67E-02
        217.39 2.61E-02
        222.22 2.56E-02
        227.27 2.50E-02
        232.56 2.43E-02
        238.10 2.36E-02
        243.90 2.31E-02
        250.00 2.23E-02
        256.41 2.15E-02
        263.16 2.08E-02
        270.27 2.02E-02
        277.78 1.96E-02
        285.71 1.89E-02
        294.12 1.82E-02
        303.03 1.75E-02
        312.50 1.69E-02
        322.58 1.64E-02
        333.33 1.59E-02
        344.83 1.52E-02
        357.14 1.46E-02
        370.37 1.40E-02
        384.62 1.35E-02
        400.00 1.30E-02
        416.67 1.24E-02
        434.78 1.18E-02
        454.55 1.12E-02
        476.19 1.07E-02
        500.00 1.03E-02
        526.32 9.89E-03
        555.56 9.48E-03
        588.24 9.10E-03
        625.00 8.76E-03
        666.67 8.49E-03
        714.29 8.24E-03
        769.23 7.97E-03
        833.33 7.66E-03
        909.09 7.31E-03
        1000.0 6.96E-03