# 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: |
    A. I. Golovashkin, I. E. Leksina, G. P. Motulevich and A. A. Shubin. The optical properties of niobium, <a href="http://jetp.ac.ru/cgi-bin/e/index/e/29/1/p27?a=list"><i>Sov. Phys. JETP</i> <b>29</b>, 27-34 (1969)</a>
COMMENTS: |
    293 K (19.85 °C)
DATA:
  - type: tabulated nk
    data: |
        0.40 1.50 2.99
        0.42 1.61 2.95
        0.44 1.91 2.98
        0.46 2.00 3.00
        0.48 2.02 3.04
        0.50 2.13 3.07
        0.52 2.20 3.08
        0.54 2.23 3.15
        0.56 2.29 3.17
        0.58 2.29 3.23
        0.60 2.27 3.25
        0.62 2.28 3.25
        0.64 2.27 3.30
        0.66 2.27 3.36
        0.68 2.23 3.38
        0.70 2.22 3.41
        0.72 2.17 3.44
        0.74 2.13 3.47
        0.76 2.11 3.62
        0.78 2.06 3.72
        0.80 2.05 3.85
        0.82 2.01 3.90
        0.84 2.00 4.03
        0.85 1.92 4.06
        0.88 1.86 4.16
        0.90 1.83 4.32
        0.92 1.80 4.41
        0.95 1.71 4.62
        0.98 1.71 4.80
        1.00 1.66 4.94
        1.05 1.59 5.37
        1.10 1.52 5.66
        1.20 1.43 6.31
        1.30 1.38 7.04
        1.40 1.35 7.64
        1.50 1.39 8.24
        1.60 1.48 8.96
        1.70 1.49 9.61
        1.80 1.68 10.3
        1.90 1.67 11.0
        2.00 1.75 11.6
        2.10 1.83 12.2
        2.20 2.26 13.1
        2.30 2.33 13.6
        2.40 2.51 14.0
        2.50 2.40 14.4
        2.60 2.58 15.3
        2.80 3.17 16.3
        3.00 3.65 17.3
        3.50 4.55 19.8
        4.00 5.62 22.2
        4.22 5.79 23.4
        4.50 6.72 25.1
        4.70 7.46 26.8
        5.00 8.06 27.7
        5.50 9.20 29.6
        6.00 10.4 31.0
        6.20 10.7 32.7
        6.50 11.5 33.9
        6.80 12.5 34.8
        7.00 13.1 36.2
        7.50 15.1 37.4
        8.00 16.3 38.8
        9.00 19.2 41.0
        10.00 22.4 44.3
CONDITIONS:
    temperature: 293