# 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: |
    Crystran Ltd.
    <a href="https://issuu.com/crystran/docs/handbook_2023_website">
    The Crystran handbook of infra-red and ultra-violet optical materials (5th edition, 2023)
    </a><br>
    See also
    <a href="https://www.crystran.com/optical-materials/krs5-thallium-bromo-iodide">
    Crystran KRS5 online data sheet
    </a>
COMMENTS: |
    TlBr<sub>42</sub>I<sub>58</sub>
    KRS5 deep IR material with a high refractive index, KRS5 is used extensively in spectroscopy for ATR prisms, windows and lenses. In conjunction with Germanium, KRS5 can also be used in athermalised IR imaging systems.<br>
    KRS-5 crystalises by the sealed-ampoule Stockbarger technique. Starting materials of the highest purity are selected to ensure that there are no anionic absorption bands between 2μm and 16μm and all crystals are checked for quality by using a pathlength of 120mm.<br>
    CAUTION: Thallium salts are considered TOXIC and should be handled with care.<br>
    REFERENCES:<br>
    (1) Rodney and Malitson J.Opt Soc.Am. V46, p 956, 1953<br>
    (2) Combes, Ballard, McCarthy: J.Opt Soc.Am. V41, p 215, 1951<br>
    (3) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
PROPERTIES:
    density:
      - value: 7371
    thermal_dispersion:
      - type: constant
        value: -235e-06
    thermal_expansion:
      - value: 58e-06
    hardness:
      - type: Knoop
        value: 3.94e8
    melting_point:
      - value: 688
    thermal_conductivity:
      - temperature: 293
        value: 0.544
    youngs_modulus:
      - value: 15.85e9
    poissons_ratio:
      - value: 0.369
    solubility:
      - temperature: 293
        value: 0.5
DATA:
  - type: tabulated n
    data: |
        0.54 2.68059
        1.00 2.44620
        1.50 2.40774
        2.00 2.39498
        3.00 2.38574
        4.00 2.38204
        5.00 2.37979
        6.00 2.37797
        7.00 2.37627
        8.00 2.37452
        9.00 2.37267
        10.0 2.37069
        11.0 2.36854
        12.0 2.36622
        13.0 2.36371
        14.0 2.36101
        15.0 2.3581
        16.0 2.35502
        17.0 2.35173
        18.0 2.34822
        19.0 2.34451
        20.0 2.34058
        21.0 2.33643
        22.0 2.33206
        23.0 2.32746
        24.0 2.32264
        25.0 2.31758
        26.0 2.31229
        27.0 2.30676
        28.0 2.30098
        29.0 2.29495
        30.0 2.28867
        31.0 2.28212
        32.0 2.27531
        33.0 2.26823
        34.0 2.26087
        35.0 2.25322
        36.0 2.24528
        37.0 2.23705
        38.0 2.22850
        39.0 2.21965
        40.0 2.21047
  - type: tabulated k
    data: |
        0.556 5.53E-05
        0.558 4.15E-05
        0.560 3.09E-05
        0.562 2.43E-05
        0.564 1.87E-05
        0.566 1.40E-05
        0.568 1.04E-05
        0.570 7.91E-06
        0.572 6.24E-06
        0.574 4.72E-06
        0.576 3.59E-06
        0.578 2.74E-06
        0.580 2.08E-06
        0.582 1.65E-06
        0.584 1.30E-06
        0.586 9.99E-07
        0.588 8.12E-07
        0.590 6.79E-07
        0.592 5.71E-07
        0.594 4.85E-07
        0.596 4.16E-07
        0.598 3.76E-07
        0.600 3.42E-07
        0.602 3.06E-07
        0.604 2.85E-07
        0.606 2.70E-07
        0.608 2.54E-07
        0.610 2.41E-07
        0.612 2.31E-07
        0.614 2.21E-07
        0.616 2.10E-07
        0.618 2.01E-07
        0.620 1.92E-07
        0.622 1.86E-07
        0.624 1.82E-07
        0.626 1.80E-07
        0.628 1.78E-07
        0.630 1.75E-07
        0.632 1.72E-07
        0.634 1.68E-07
        0.636 1.63E-07
        0.638 1.58E-07
        0.640 1.52E-07
        0.642 1.46E-07
        0.644 1.39E-07
        0.646 1.33E-07
        0.648 1.27E-07
        0.650 1.22E-07
        0.652 1.17E-07
        0.654 1.14E-07
        0.656 1.10E-07
        0.658 1.07E-07
        0.660 1.04E-07
        0.662 1.01E-07
        0.664 9.75E-08
        0.666 9.40E-08
        0.668 9.01E-08
        0.670 8.58E-08
        0.672 8.11E-08
        0.674 7.63E-08
        0.676 7.12E-08
        0.678 6.60E-08
        0.680 6.10E-08
        0.682 5.59E-08
        0.684 5.11E-08
        0.686 2.80E-07
        0.688 2.77E-07
        0.690 2.75E-07
        0.692 2.73E-07
        0.694 2.71E-07
        0.696 2.70E-07
        0.698 2.70E-07
        0.700 2.69E-07
        0.702 2.68E-07
        0.704 2.67E-07
        0.706 2.66E-07
        0.708 2.63E-07
        0.710 2.59E-07
        0.712 2.54E-07
        0.714 2.48E-07
        0.716 2.43E-07
        0.718 2.41E-07
        0.720 2.40E-07
        0.722 2.40E-07
        0.724 2.41E-07
        0.726 2.42E-07
        0.728 2.43E-07
        0.730 2.43E-07
        0.732 2.42E-07
        0.734 2.39E-07
        0.736 2.36E-07
        0.738 2.33E-07
        0.740 2.29E-07
        0.742 2.26E-07
        0.744 2.24E-07
        0.746 2.22E-07
        0.748 2.21E-07
        0.750 2.19E-07
        0.752 2.17E-07
        0.754 2.15E-07
        0.756 2.12E-07
        0.758 2.10E-07
        0.760 2.07E-07
        0.762 2.04E-07
        0.764 2.00E-07
        0.766 1.97E-07
        0.768 1.94E-07
        0.770 1.91E-07
        0.772 1.89E-07
        0.774 1.88E-07
        0.776 1.86E-07
        0.778 1.85E-07
        0.780 1.84E-07
        0.782 1.82E-07
        0.784 1.79E-07
        0.786 1.75E-07
        0.788 1.72E-07
        0.790 1.68E-07
        0.792 1.65E-07
        0.794 1.63E-07
        0.796 1.61E-07
        0.798 1.60E-07
        0.800 1.59E-07
        2.5 1.34E-08
        2.6 8.79E-08
        2.7 1.27E-07
        2.8 1.55E-07
        2.9 1.77E-07
        3.0 1.95E-07
        3.1 2.05E-07
        3.2 2.09E-07
        3.3 2.02E-07
        3.4 1.85E-07
        3.5 1.68E-07
        3.6 1.58E-07
        3.7 1.56E-07
        3.8 1.57E-07
        3.9 1.63E-07
        4.0 1.71E-07
        4.1 1.83E-07
        4.2 1.97E-07
        4.3 2.14E-07
        4.4 2.30E-07
        4.5 2.49E-07
        4.6 2.68E-07
        4.7 2.87E-07
        4.8 3.10E-07
        4.9 3.32E-07
        5.0 3.55E-07
        5.1 3.79E-07
        5.2 4.02E-07
        5.3 4.27E-07
        5.4 4.51E-07
        5.5 4.77E-07
        5.6 5.05E-07
        5.7 5.31E-07
        5.8 5.55E-07
        5.9 5.82E-07
        6.0 6.10E-07
        6.1 6.35E-07
        6.2 6.61E-07
        6.3 6.87E-07
        6.4 7.13E-07
        6.5 7.36E-07
        6.6 7.57E-07
        6.7 7.77E-07
        6.8 7.98E-07
        6.9 8.12E-07
        7.0 8.26E-07
        7.1 8.36E-07
        7.2 8.46E-07
        7.3 8.49E-07
        7.4 8.47E-07
        7.5 8.42E-07
        7.6 8.31E-07
        7.7 8.13E-07
        7.8 7.89E-07
        7.9 7.56E-07
        8.0 7.18E-07
        8.1 6.75E-07
        8.2 6.44E-07
        8.3 6.20E-07
        8.4 6.05E-07
        8.5 6.02E-07
        8.6 6.00E-07
        8.7 6.06E-07
        8.8 6.13E-07
        8.9 6.25E-07
        9.0 6.41E-07
        9.1 6.58E-07
        9.2 6.75E-07
        9.3 6.93E-07
        9.4 7.11E-07
        9.5 7.35E-07
        9.6 7.53E-07
        9.7 7.78E-07
        9.8 8.03E-07
        9.9 8.23E-07
        10.0 8.49E-07
        10.1 8.75E-07
        10.2 9.02E-07
        10.3 9.30E-07
        10.4 9.58E-07
        10.5 9.86E-07
        10.6 1.01E-06
        10.7 1.04E-06
        10.8 1.06E-06
        10.9 1.09E-06
        11.0 1.11E-06
        11.1 1.14E-06
        11.2 1.15E-06
        11.3 1.16E-06
        11.4 1.17E-06
        11.5 1.18E-06
        11.6 1.18E-06
        11.7 1.18E-06
        11.8 1.18E-06
        11.9 1.19E-06
        12.0 1.19E-06
        12.1 1.19E-06
        12.2 1.19E-06
        12.3 1.20E-06
        12.4 1.20E-06
        12.5 1.20E-06
        12.6 1.21E-06
        12.7 1.21E-06
        12.8 1.22E-06
        12.9 1.21E-06
        13.0 1.22E-06
        13.1 1.23E-06
        13.2 1.23E-06
        13.3 1.23E-06
        13.4 1.24E-06
        13.5 1.25E-06
        13.6 1.25E-06
        13.7 1.25E-06
        13.8 1.26E-06
        13.9 1.27E-06
        14.0 1.28E-06
        14.1 1.28E-06
        14.2 1.29E-06
        14.3 1.30E-06
        14.4 1.31E-06
        14.5 1.32E-06
        14.6 1.33E-06
        14.7 1.34E-06
        14.8 1.35E-06
        14.9 1.36E-06
        15.0 1.37E-06
        15.1 1.38E-06
        15.2 1.39E-06
        15.3 1.41E-06
        15.4 1.43E-06
        15.5 1.44E-06
        15.6 1.45E-06
        15.7 1.46E-06
        15.8 1.48E-06
        15.9 1.48E-06
        16.0 1.49E-06
        16.1 1.50E-06
        16.2 1.50E-06
        16.3 1.50E-06
        16.4 1.49E-06
        16.5 1.47E-06
        16.6 1.45E-06
        16.7 1.41E-06
        16.8 1.36E-06
        16.9 1.31E-06
        17.0 1.26E-06
        17.1 1.24E-06
        17.2 1.24E-06
        17.3 1.26E-06
        17.4 1.29E-06
        17.5 1.32E-06
        17.6 1.35E-06
        17.7 1.37E-06
        17.8 1.32E-06
        17.9 1.13E-06
        18.0 9.62E-07
        18.1 8.79E-07
        18.2 8.34E-07
        18.3 8.17E-07
        18.4 8.10E-07
        18.5 8.13E-07
        18.6 8.17E-07
        18.7 8.21E-07
        18.8 8.26E-07
        18.9 8.31E-07
        19.0 8.27E-07
        19.1 8.33E-07
        19.2 8.19E-07
        19.3 8.05E-07
        19.4 7.82E-07
        19.5 7.49E-07
        19.6 7.06E-07
        19.7 6.62E-07
        19.8 6.19E-07
        19.9 5.65E-07
        20.0 5.32E-07
        20.1 5.10E-07
        20.2 5.09E-07
        20.3 5.20E-07
        20.4 5.73E-07
        20.5 6.28E-07
        20.6 7.05E-07
        20.7 7.84E-07
        20.8 8.63E-07
        20.9 9.44E-07
        21.0 1.02E-06
        21.1 1.08E-06
        21.2 1.12E-06
        21.3 1.15E-06
        21.4 1.17E-06
        21.5 1.15E-06
        21.6 1.13E-06
        21.7 1.09E-06
        21.8 1.05E-06
        21.9 1.00E-06
        22.0 9.42E-07
        22.1 8.84E-07
        22.2 8.26E-07
        22.3 7.80E-07
        22.4 7.46E-07
        22.5 7.47E-07
        22.6 7.72E-07
        22.7 8.69E-07
        22.8 1.05E-06
        22.9 1.39E-06
        23.0 1.99E-06
        23.1 3.00E-06
        23.2 4.19E-06
        23.3 4.53E-06
        23.4 3.84E-06
        23.5 2.60E-06
        23.6 1.61E-06
        23.7 2.49E-06
        23.8 3.65E-06
        23.9 4.30E-06
        24.0 4.49E-06
        24.1 4.67E-06
        24.2 4.86E-06
        24.3 5.07E-06
        24.4 5.25E-06
        24.5 4.32E-06
        24.6 1.37E-06