# 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: |
    M. R. Querry. Optical constants of minerals and other materials from the millimeter to the ultraviolet, <a href="https://apps.dtic.mil/sti/citations/ADA192210"><i>Contractor Report</i> CRDEC-CR-88009 (1987)</a>
DATA:
  - type: tabulated nk
    data: |
        0.2200 3.017 1.318
        0.2400 3.044 0.740
        0.2600 2.905 0.523
        0.2800 2.816 0.417
        0.3000 2.774 0.357
        0.3200 2.784 0.299
        0.3400 2.790 0.190
        0.3600 2.710 0.054
        0.3800 2.615 0.015
        0.4000 2.550 0.008
        0.4200 2.508 0.004
        0.4400 2.475 0.003
        0.4600 2.451 0.003
        0.4800 2.429 0.001
        0.5000 2.416 0.003
        0.5200 2.397 0.000
        0.5400 2.384 0.000
        0.5600 2.373 0.001
        0.5800 2.363 0.001
        0.6000 2.355 0.002
        0.6200 2.348 0.002
        0.6400 2.341 0.002
        0.6600 2.335 0.005
        0.6800 2.331 0.005
        0.7000 2.327 0.006
        0.7200 2.322 0.006
        0.7400 2.319 0.007
        0.7600 2.316 0.007
        0.7800 2.313 0.008
        0.8000 2.310 0.009
        0.8200 2.308 0.009
        0.8400 2.306 0.010
        0.8600 2.304 0.011
        0.8800 2.303 0.011
        0.9000 2.301 0.012
        0.9200 2.300 0.012
        0.9400 2.299 0.013
        0.9600 2.298 0.014
        0.9800 2.298 0.015
        1.0000 2.298 0.016
        1.0200 2.298 0.016
        1.0400 2.299 0.015
        1.0600 2.299 0.015
        1.0800 2.299 0.014
        1.1000 2.299 0.014
        1.1200 2.299 0.013
        1.1400 2.299 0.012
        1.1600 2.299 0.010
        1.1800 2.298 0.010
        1.2000 2.298 0.009
        1.2200 2.297 0.008
        1.2400 2.297 0.007
        1.2600 2.296 0.007
        1.2800 2.296 0.006
        1.3000 2.295 0.005
        1.3200 2.294 0.005
        1.3400 2.293 0.005
        1.3600 2.293 0.004
        1.3800 2.292 0.004
        1.4000 2.292 0.004
        1.4200 2.292 0.004
        1.4400 2.291 0.004
        1.4600 2.291 0.003
        1.4800 2.291 0.002
        1.5000 2.290 0.002
        1.5200 2.290 0.002
        1.5400 2.289 0.001
        1.5600 2.289 0.001
        1.5800 2.289 0.001
        1.6000 2.288 0.000
        1.6200 2.288 0.000
        1.6400 2.287 0.000
        1.6600 2.286 0.000
        1.6800 2.286 0.000
        1.7000 2.286 0.000
        1.7200 2.286 0.000
        1.7400 2.286 0.000
        1.7600 2.286 0.000
        1.7800 2.286 0.000
        1.8000 2.286 0.000
        1.8200 2.286 0.000
        1.8400 2.287 0.000
        1.8600 2.287 0.000
        1.8800 2.287 0.000
        1.9000 2.287 0.000
        1.9200 2.287 0.000
        1.9400 2.287 0.000
        1.9600 2.286 0.000
        1.9800 2.286 0.000
        2.0000 2.285 0.000
        2.0200 2.285 0.000
        2.0400 2.284 0.000
        2.0600 2.284 0.000
        2.0800 2.283 0.000
        2.1000 2.281 0.000
        2.1200 2.280 0.000
        2.1400 2.280 0.000
        2.1600 2.279 0.000
        2.1800 2.278 0.000
        2.2000 2.278 0.000
        2.2200 2.277 0.000
        2.2400 2.277 0.000
        2.2600 2.276 0.000
        2.2800 2.276 0.000
        2.3000 2.275 0.000
        2.3200 2.274 0.000
        2.3400 2.273 0.000
        2.3600 2.272 0.000
        2.3800 2.271 0.000
        2.4000 2.271 0.000
        2.4200 2.270 0.000
        2.4400 2.269 0.000
        2.4600 2.268 0.000
        2.4800 2.268 0.000
        2.5000 2.268 0.003
        2.5126 2.268 0.002
        2.5253 2.268 0.002
        2.5381 2.268 0.002
        2.5510 2.268 0.002
        2.5641 2.268 0.002
        2.5773 2.268 0.002
        2.5907 2.268 0.002
        2.6042 2.268 0.002
        2.6178 2.268 0.002
        2.6316 2.268 0.002
        2.6455 2.268 0.001
        2.6596 2.268 0.001
        2.6738 2.268 0.001
        2.6882 2.267 0.001
        2.7027 2.267 0.001
        2.7174 2.267 0.000
        2.7322 2.267 0.000
        2.7473 2.266 0.000
        2.7624 2.266 0.000
        2.7778 2.266 0.000
        2.7933 2.265 0.000
        2.8090 2.265 0.000
        2.8249 2.264 0.000
        2.8409 2.264 0.000
        2.8571 2.264 0.000
        2.8736 2.263 0.000
        2.8902 2.263 0.000
        2.9070 2.263 0.000
        2.9240 2.263 0.000
        2.9412 2.263 0.000
        2.9586 2.262 0.000
        2.9762 2.262 0.000
        2.9940 2.262 0.000
        3.0120 2.262 0.000
        3.0303 2.262 0.000
        3.0488 2.261 0.000
        3.0675 2.261 0.001
        3.0864 2.261 0.000
        3.1056 2.261 0.000
        3.1250 2.261 0.001
        3.1447 2.260 0.001
        3.1646 2.260 0.001
        3.1847 2.260 0.001
        3.2051 2.260 0.000
        3.2258 2.260 0.001
        3.2468 2.260 0.000
        3.2680 2.259 0.001
        3.2895 2.259 0.001
        3.3113 2.259 0.001
        3.3333 2.259 0.001
        3.3557 2.259 0.001
        3.3784 2.259 0.001
        3.4014 2.259 0.001
        3.4247 2.258 0.001
        3.4483 2.258 0.001
        3.4722 2.258 0.001
        3.4965 2.258 0.001
        3.5211 2.258 0.001
        3.5461 2.258 0.001
        3.5714 2.258 0.001
        3.5971 2.257 0.001
        3.6232 2.257 0.001
        3.6496 2.257 0.001
        3.6765 2.257 0.001
        3.7037 2.257 0.001
        3.7313 2.257 0.001
        3.7594 2.257 0.001
        3.7879 2.256 0.001
        3.8168 2.256 0.001
        3.8462 2.256 0.001
        3.8760 2.256 0.001
        3.9063 2.256 0.000
        3.9370 2.256 0.000
        3.9683 2.255 0.000
        4.0000 2.255 0.000
        4.0323 2.255 0.000
        4.0650 2.254 0.000
        4.0984 2.254 0.000
        4.1322 2.254 0.000
        4.1667 2.253 0.000
        4.2017 2.253 0.000
        4.2373 2.252 0.000
        4.2735 2.252 0.000
        4.3103 2.252 0.000
        4.3478 2.251 0.000
        4.3860 2.251 0.001
        4.4248 2.251 0.001
        4.4643 2.250 0.001
        4.5045 2.250 0.001
        4.5455 2.250 0.001
        4.5872 2.250 0.001
        4.6296 2.250 0.001
        4.6729 2.250 0.001
        4.7170 2.249 0.001
        4.7619 2.249 0.001
        4.8077 2.249 0.001
        4.8544 2.249 0.000
        4.9020 2.248 0.000
        4.9505 2.248 0.000
        5.0000 2.248 0.001
        5.0505 2.247 0.001
        5.1020 2.247 0.001
        5.1546 2.247 0.000
        5.2083 2.246 0.000
        5.2632 2.246 0.000
        5.3191 2.246 0.000
        5.3763 2.245 0.000
        5.4348 2.244 0.000
        5.4945 2.244 0.000
        5.5556 2.243 0.000
        5.6180 2.242 0.000
        5.6818 2.242 0.000
        5.7471 2.241 0.000
        5.8140 2.240 0.000
        5.8824 2.239 0.000
        5.9524 2.239 0.000
        6.0241 2.238 0.000
        6.0976 2.237 0.001
        6.1728 2.236 0.001
        6.2500 2.236 0.001
        6.3291 2.235 0.001
        6.4103 2.235 0.002
        6.4935 2.234 0.002
        6.5789 2.234 0.002
        6.6667 2.233 0.002
        6.7568 2.232 0.002
        6.8493 2.232 0.002
        6.9444 2.231 0.003
        7.0423 2.230 0.003
        7.1429 2.229 0.003
        7.2464 2.229 0.003
        7.3529 2.228 0.003
        7.4627 2.227 0.003
        7.5758 2.226 0.003
        7.6923 2.225 0.003
        7.8125 2.224 0.003
        7.9365 2.223 0.003
        8.0645 2.221 0.003
        8.1967 2.220 0.004
        8.3333 2.219 0.004
        8.4746 2.217 0.004
        8.6207 2.216 0.003
        8.7719 2.214 0.003
        8.9286 2.213 0.003
        9.0909 2.211 0.003
        9.2593 2.209 0.003
        9.4340 2.207 0.003
        9.6154 2.204 0.003
        9.8039 2.201 0.002
        10.0000 2.199 0.002
        10.2041 2.196 0.002
        10.4167 2.192 0.002
        10.6383 2.189 0.002
        10.8696 2.185 0.002
        11.1111 2.180 0.002
        11.3536 2.176 0.003
        11.6279 2.172 0.003
        11.9048 2.167 0.004
        12.1951 2.161 0.004
        12.5000 2.155 0.005
        12.8205 2.149 0.006
        13.1579 2.141 0.006
        13.5135 2.133 0.007
        13.8889 2.125 0.010
        14.2857 2.116 0.012
        14.7059 2.107 0.014
        15.1515 2.097 0.016
        15.6250 2.086 0.017
        16.1290 2.074 0.018
        16.6667 2.059 0.019
        17.2414 2.042 0.019
        17.8571 2.021 0.017
        18.5185 1.995 0.016
        19.2308 1.960 0.018
        20.0000 1.923 0.026
        20.8333 1.883 0.029
        21.7391 1.828 0.027
        22.7273 1.751 0.028
        23.8095 1.648 0.037
        25.0000 1.507 0.048
        26.3158 1.296 0.066
        27.7778 0.865 0.097
        29.4118 0.093 0.944
        31.2500 0.107 2.072
        33.3333 0.702 3.451
        35.7143 2.653 5.788
        38.4615 6.369 1.269
        41.6667 4.347 0.153
        45.4545 3.709 0.171
        50.0000 3.465 0.173
        55.5556 3.324 0.151
        62.5000 3.223 0.120
        71.4286 3.150 0.098
        83.3333 3.097 0.079
        100.0000 3.058 0.063
        125.0000 3.029 0.049
        166.6667 3.008 0.036