# 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: |
    78 K (-195.15 °C)
DATA:
  - type: tabulated nk
    data: |
        0.40 1.14 2.93
        0.41 1.17 3.06
        0.42 1.51 2.88
        0.44 1.76 2.97
        0.46 1.96 2.99
        0.48 2.09 3.04
        0.50 2.17 3.10
        0.52 2.29 3.11
        0.54 2.30 3.12
        0.56 2.36 3.12
        0.58 2.33 3.12
        0.60 2.35 3.16
        0.62 2.37 3.14
        0.64 2.33 3.15
        0.66 2.27 3.19
        0.68 2.25 3.16
        0.70 2.15 3.12
        0.72 2.12 3.15
        0.74 2.05 3.25
        0.76 1.95 3.28
        0.78 1.80 3.48
        0.80 1.79 3.57
        0.82 1.72 3.64
        0.84 1.67 3.74
        0.85 1.65 3.88
        0.90 1.58 4.13
        0.95 1.39 4.40
        1.00 1.28 4.73
        1.05 1.11 5.01
        1.10 1.03 5.45
        1.20 0.86 6.12
        1.30 0.80 6.89
        1.40 0.78 7.40
        1.50 0.66 8.24
        1.60 0.72 8.85
        1.70 0.64 9.34
        1.80 0.66 10.2
        1.90 0.54 11.1
        2.00 0.41 11.4
        2.05 0.47 11.8
        2.10 0.66 12.3
        2.15 0.67 12.5
        2.20 0.84 12.8
        2.25 0.78 12.8
        2.30 0.73 13.4
        2.35 0.52 13.0
        2.40 0.50 13.9
        2.45 0.53 14.1
        2.50 0.70 14.4
        2.55 0.88 14.9
        2.60 0.99 14.9
        2.80 1.40 16.2
        3.00 1.63 17.4
        3.30 1.86 17.5
        3.70 2.36 18.6
        4.22 2.60 24.4
        4.70 2.81 28.2
        6.00 3.79 35.7
        6.60 4.75 38.2
        8.20 6.15 50.5
        9.20 6.45 58.5
CONDITIONS:
    temperature: 78