# 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: 49.5 999.9
    coefficients: 0 6.38 2 34.453 2 -2871.4 0 34.453 2
  - type: tabulated k
    data: |
        49.505 5.75E-03
        49.751 5.71E-03
        50.000 5.66E-03
        50.251 5.62E-03
        50.505 5.57E-03
        50.761 5.52E-03
        51.020 5.47E-03
        51.282 5.43E-03
        51.546 5.38E-03
        51.813 5.33E-03
        52.083 5.29E-03
        52.356 5.25E-03
        52.632 5.21E-03
        52.910 5.16E-03
        53.191 5.11E-03
        53.476 5.07E-03
        53.763 5.02E-03
        54.054 4.98E-03
        54.348 4.94E-03
        54.645 4.90E-03
        54.945 4.85E-03
        55.249 4.81E-03
        55.556 4.77E-03
        55.866 4.73E-03
        56.180 4.69E-03
        56.497 4.65E-03
        56.818 4.62E-03
        57.143 4.58E-03
        57.471 4.55E-03
        57.803 4.52E-03
        58.140 4.48E-03
        58.480 4.45E-03
        58.824 4.42E-03
        59.172 4.39E-03
        59.524 4.36E-03
        59.880 4.33E-03
        60.241 4.30E-03
        60.606 4.27E-03
        60.976 4.25E-03
        61.350 4.22E-03
        61.728 4.20E-03
        62.112 4.17E-03
        62.500 4.15E-03
        62.893 4.13E-03
        63.291 4.10E-03
        63.694 4.08E-03
        64.103 4.07E-03
        64.516 4.05E-03
        64.935 4.04E-03
        65.359 4.03E-03
        65.789 4.02E-03
        66.225 4.01E-03
        66.667 4.01E-03
        67.114 4.01E-03
        67.568 4.00E-03
        68.027 4.00E-03
        68.493 4.01E-03
        68.966 4.01E-03
        69.444 4.02E-03
        69.930 4.02E-03
        70.423 4.03E-03
        70.922 4.05E-03
        71.429 4.06E-03
        71.942 4.07E-03
        72.464 4.09E-03
        72.993 4.10E-03
        73.529 4.12E-03
        74.074 4.13E-03
        74.627 4.14E-03
        75.188 4.15E-03
        75.758 4.16E-03
        76.336 4.17E-03
        76.923 4.18E-03
        77.519 4.18E-03
        78.125 4.19E-03
        78.740 4.19E-03
        79.365 4.19E-03
        80.000 4.19E-03
        80.645 4.19E-03
        81.301 4.19E-03
        81.967 4.19E-03
        82.645 4.19E-03
        83.333 4.19E-03
        84.034 4.18E-03
        84.746 4.18E-03
        85.470 4.17E-03
        86.207 4.16E-03
        86.957 4.15E-03
        87.719 4.14E-03
        88.496 4.12E-03
        89.286 4.11E-03
        90.090 4.09E-03
        90.909 4.07E-03
        91.743 4.05E-03
        92.593 4.03E-03
        93.458 4.01E-03
        94.340 3.98E-03
        95.238 3.95E-03
        96.154 3.92E-03
        97.087 3.89E-03
        98.039 3.86E-03
        99.010 3.83E-03
        100.00 3.80E-03
        101.01 3.77E-03
        102.04 3.74E-03
        103.09 3.72E-03
        104.17 3.70E-03
        105.26 3.67E-03
        106.38 3.64E-03
        107.53 3.62E-03
        108.70 3.58E-03
        109.89 3.55E-03
        111.11 3.52E-03
        112.36 3.49E-03
        113.64 3.46E-03
        114.94 3.43E-03
        116.28 3.41E-03
        117.65 3.38E-03
        119.05 3.34E-03
        120.48 3.31E-03
        121.95 3.28E-03
        123.46 3.25E-03
        125.00 3.21E-03
        126.58 3.18E-03
        128.21 3.16E-03
        129.87 3.13E-03
        131.58 3.10E-03
        133.33 3.07E-03
        135.14 3.05E-03
        136.99 3.02E-03
        138.89 2.99E-03
        140.85 2.97E-03
        142.86 2.94E-03
        144.93 2.91E-03
        147.06 2.88E-03
        149.25 2.85E-03
        151.52 2.82E-03
        153.85 2.78E-03
        156.25 2.75E-03
        158.73 2.72E-03
        161.29 2.69E-03
        163.93 2.66E-03
        166.67 2.62E-03
        169.49 2.59E-03
        172.41 2.55E-03
        175.44 2.52E-03
        178.57 2.48E-03
        181.82 2.45E-03
        185.19 2.41E-03
        188.68 2.37E-03
        192.31 2.34E-03
        196.08 2.31E-03
        200.00 2.28E-03
        204.08 2.25E-03
        208.33 2.22E-03
        212.77 2.19E-03
        217.39 2.16E-03
        222.22 2.13E-03
        227.27 2.09E-03
        232.56 2.06E-03
        238.10 2.02E-03
        243.90 1.98E-03
        250.00 1.95E-03
        256.41 1.91E-03
        263.16 1.87E-03
        270.27 1.83E-03
        277.78 1.79E-03
        285.71 1.75E-03
        294.12 1.71E-03
        303.03 1.67E-03
        312.50 1.63E-03
        322.58 1.59E-03
        333.33 1.55E-03
        344.83 1.51E-03
        357.14 1.47E-03
        370.37 1.42E-03
        384.62 1.37E-03
        400.00 1.32E-03
        416.67 1.27E-03
        434.78 1.22E-03
        454.55 1.16E-03
        476.19 1.10E-03
        500.00 1.04E-03
        526.32 9.80E-04
        555.56 9.17E-04
        588.24 8.53E-04
        625.00 7.89E-04
        666.67 7.23E-04
        714.29 6.49E-04
        769.23 5.56E-04
        833.33 4.41E-04
        909.09 3.00E-04
        1000.0 1.28E-04