# 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: |
    1) <a href="https://refractiveindex.info/download/data/2014/VITRON%20IG-4%20Datenblatt%20Juni%202014.pdf">VITRON datasheet IG-4 June 2014</a><br>
    2) Dr. Rolf Henkel (VITRON Spezialwerkstoffe GmbH) - private communications
COMMENTS: |
    Room temperature. Refractive index is relative to air at standard conditions; Wavelength in dispersion formula is as measured in air and expressed in micrometers.
DATA:
  - type: formula 1
    wavelength_range: 1.0 12.0
    coefficients: 2.810961 3.041642 0.398128 0.863445 42.516520
  - type: tabulated k
    data: |
        1.0 4.5189E-07
        1.5 3.4852E-07
        2.0 4.1109E-07
        3.0 8.1875E-07
        4.0 7.8380E-07
        5.0 9.6403E-07
        6.0 1.1697E-06
        7.0 1.3401E-06
        8.0 3.6640E-06
        9.0 5.9186E-07
        10.0 1.0293E-06
        11.0 4.9023E-06
        12.0 5.6255E-05
        13.0 1.5434E-04
        14.0 5.7641E-05