# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
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REFERENCES: |
    H. E. Ives and H. B. Briggs.
    The optical constants of sodium.
    <a href="https://doi.org/10.1364/JOSA.27.000181"><i>J. Opt. Soc. Am.</i> <b>27</b>, 181-185 (1937)</a>
DATA:
  - type: tabulated nk
    data: |
        0.2536 0.026 0.621
        0.2652 0.028 0.735
        0.3126 0.040 1.02
        0.3650 0.042 1.44
        0.4047 0.048 1.56
        0.4358 0.048 1.80
        0.5461 0.029 2.32
        0.5780 0.027 2.59