# 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, <a href="https://apps.dtic.mil/sti/citations/ADA158623"><i>Contractor Report</i> CRDC-CR-85034 (1985)</a>
COMMENTS: |
    Graphite pellet from Dixon 200-10 powder.
DATA:
  - type: tabulated nk
    data: |
        0.2100 0.821 0.820
        0.2200 0.860 0.937
        0.2300 0.924 1.065
        0.2400 1.021 1.194
        0.2500 1.174 1.298
        0.2600 1.358 1.323
        0.2700 1.498 1.276
        0.2800 1.585 1.215
        0.2900 1.638 1.162
        0.3000 1.673 1.119
        0.3100 1.697 1.083
        0.3200 1.710 1.057
        0.3300 1.724 1.042
        0.3400 1.739 1.023
        0.3500 1.742 1.009
        0.3600 1.744 1.004
        0.3700 1.748 1.004
        0.3800 1.755 1.007
        0.3900 1.764 1.009
        0.4000 1.774 1.012
        0.4100 1.782 1.013
        0.4200 1.789 1.015
        0.4300 1.794 1.019
        0.4400 1.799 1.024
        0.4500 1.805 1.031
        0.4600 1.812 1.039
        0.4700 1.818 1.046
        0.4800 1.826 1.056
        0.4900 1.837 1.065
        0.5000 1.846 1.070
        0.5100 1.854 1.076
        0.5200 1.861 1.082
        0.5300 1.868 1.089
        0.5400 1.874 1.096
        0.5500 1.881 1.103
        0.5600 1.887 1.110
        0.5700 1.891 1.120
        0.5800 1.899 1.130
        0.5900 1.906 1.137
        0.6000 1.912 1.146
        0.6100 1.918 1.154
        0.6200 1.924 1.163
        0.6300 1.930 1.173
        0.6400 1.938 1.184
        0.6500 1.946 1.191
        0.6600 1.951 1.196
        0.6700 1.955 1.208
        0.6800 1.961 1.219
        0.6900 1.968 1.230
        0.7000 1.975 1.240
        0.7100 1.982 1.250
        0.7210 1.990 1.260
        0.7300 1.997 1.270
        0.7400 2.004 1.280
        0.7500 2.012 1.290
        0.7600 2.019 1.300
        0.7700 2.028 1.310
        0.7800 2.036 1.319
        0.7900 2.045 1.329
        0.8000 2.055 1.334
        0.8100 2.060 1.341
        0.8200 2.067 1.349
        0.8300 2.073 1.357
        0.8400 2.079 1.365
        0.8500 2.085 1.373
        0.8600 2.091 1.380
        0.8700 2.094 1.387
        0.8800 2.098 1.398
        0.8900 2.103 1.408
        0.9000 2.108 1.418
        0.9100 2.113 1.429
        0.9200 2.119 1.441
        0.9300 2.126 1.451
        0.9400 2.132 1.462
        0.9500 2.138 1.473
        0.9600 2.145 1.483
        0.9700 2.152 1.494
        0.9800 2.159 1.504
        0.9900 2.166 1.514
        1.0000 2.173 1.525
        1.0100 2.180 1.535
        1.0200 2.187 1.545
        1.0300 2.195 1.556
        1.0400 2.202 1.566
        1.0500 2.209 1.576
        1.0600 2.217 1.587
        1.0700 2.225 1.596
        1.0800 2.232 1.607
        1.0900 2.240 1.617
        1.1000 2.248 1.627
        1.1100 2.256 1.637
        1.1200 2.263 1.647
        1.1300 2.271 1.656
        1.1400 2.281 1.668
        1.1500 2.290 1.678
        1.1600 2.298 1.687
        1.1700 2.307 1.697
        1.1800 2.316 1.706
        1.1900 2.324 1.716
        1.2000 2.337 1.724
        1.2100 2.345 1.729
        1.2200 2.351 1.739
        1.2300 2.359 1.748
        1.2400 2.368 1.757
        1.2500 2.376 1.766
        1.2600 2.385 1.775
        1.2700 2.395 1.783
        1.2800 2.403 1.792
        1.2900 2.412 1.800
        1.3000 2.421 1.808
        1.3100 2.430 1.817
        1.3200 2.440 1.825
        1.3300 2.449 1.833
        1.3400 2.458 1.841
        1.3500 2.468 1.848
        1.3600 2.477 1.855
        1.3700 2.486 1.862
        1.3800 2.495 1.869
        1.3900 2.504 1.876
        1.4000 2.513 1.882
        1.4100 2.522 1.889
        1.4200 2.531 1.896
        1.4300 2.539 1.902
        1.4400 2.547 1.909
        1.4500 2.555 1.916
        1.4600 2.564 1.923
        1.4700 2.572 1.930
        1.4800 2.581 1.937
        1.4900 2.590 1.944
        1.5000 2.599 1.950
        1.5100 2.608 1.956
        1.5200 2.617 1.962
        1.5300 2.626 1.967
        1.5400 2.633 1.973
        1.5500 2.642 1.980
        1.5600 2.651 1.986
        1.5700 2.660 1.992
        1.5800 2.668 1.996
        1.5900 2.674 2.003
        1.6000 2.684 2.010
        1.6100 2.693 2.015
        1.6200 2.701 2.020
        1.6300 2.709 2.026
        1.6400 2.717 2.031
        1.6500 2.726 2.037
        1.6600 2.733 2.043
        1.6700 2.742 2.049
        1.6800 2.751 2.054
        1.6900 2.760 2.059
        1.7000 2.768 2.064
        1.7100 2.775 2.069
        1.7200 2.784 2.074
        1.7300 2.792 2.080
        1.7400 2.800 2.085
        1.7500 2.809 2.090
        1.7600 2.817 2.095
        1.7700 2.826 2.100
        1.7800 2.835 2.105
        1.7900 2.843 2.109
        1.8000 2.851 2.115
        1.8100 2.860 2.120
        1.8200 2.869 2.125
        1.8300 2.881 2.133
        1.8400 2.895 2.133
        1.8500 2.903 2.131
        1.8600 2.910 2.130
        1.8700 2.914 2.131
        1.8800 2.919 2.136
        1.8900 2.927 2.139
        1.9000 2.933 2.142
        1.9100 2.939 2.146
        1.9200 2.946 2.149
        1.9300 2.952 2.153
        1.9400 2.959 2.157
        1.9500 2.966 2.160
        1.9600 2.973 2.163
        1.9700 2.979 2.166
        1.9800 2.986 2.170
        1.9900 2.992 2.175
        2.0000 3.003 2.176
        2.0100 3.007 2.174
        2.0200 3.011 2.179
        2.0300 3.017 2.182
        2.0400 3.023 2.186
        2.0500 3.029 2.189
        2.0600 3.035 2.191
        2.0700 3.041 2.194
        2.0800 3.047 2.197
        2.0900 3.052 2.199
        2.1000 3.056 2.202
        2.1100 3.063 2.204
        2.1200 3.068 2.207
        2.1300 3.072 2.210
        2.1400 3.076 2.213
        2.1500 3.082 2.216
        2.1600 3.086 2.219
        2.1700 3.090 2.223
        2.1800 3.096 2.226
        2.1900 3.100 2.229
        2.2000 3.104 2.233
        2.2100 3.109 2.237
        2.2200 3.114 2.240
        2.2300 3.118 2.244
        2.2400 3.123 2.247
        2.2500 3.128 2.250
        2.2600 3.132 2.253
        2.2700 3.135 2.257
        2.2800 3.138 2.261
        2.2900 3.142 2.266
        2.3000 3.147 2.270
        2.3100 3.151 2.274
        2.3200 3.155 2.279
        2.3300 3.160 2.283
        2.3400 3.164 2.288
        2.3500 3.169 2.292
        2.3600 3.173 2.296
        2.3700 3.177 2.302
        2.3800 3.182 2.306
        2.3900 3.188 2.311
        2.4000 3.193 2.314
        2.4100 3.197 2.318
        2.4200 3.202 2.322
        2.4300 3.206 2.326
        2.4400 3.210 2.331
        2.4500 3.214 2.335
        2.4600 3.218 2.339
        2.4700 3.223 2.344
        2.4800 3.228 2.348
        2.4900 3.231 2.352
        2.5000 3.234 2.358
        2.5063 3.238 2.364
        2.5126 3.243 2.364
        2.5189 3.245 2.367
        2.5253 3.249 2.369
        2.5316 3.252 2.372
        2.5381 3.255 2.375
        2.5445 3.255 2.377
        2.5510 3.259 2.384
        2.5575 3.265 2.385
        2.5641 3.265 2.388
        2.5707 3.270 2.390
        2.5773 3.271 2.393
        2.5840 3.274 2.397
        2.5907 3.277 2.401
        2.5974 3.281 2.403
        2.6042 3.284 2.406
        2.6110 3.287 2.411
        2.6178 3.293 2.414
        2.6247 3.293 2.415
        2.6316 3.297 2.419
        2.6385 3.300 2.421
        2.6455 3.303 2.426
        2.6525 3.307 2.429
        2.6596 3.309 2.433
        2.6667 3.312 2.437
        2.6738 3.316 2.441
        2.6810 3.321 2.444
        2.6882 3.324 2.450
        2.6954 3.331 2.452
        2.7027 3.330 2.453
        2.7100 3.337 2.457
        2.7174 3.340 2.461
        2.7248 3.346 2.464
        2.7322 3.346 2.464
        2.7397 3.349 2.473
        2.7473 3.354 2.474
        2.7548 3.359 2.480
        2.7624 3.365 2.482
        2.7701 3.368 2.485
        2.7778 3.370 2.488
        2.7855 3.375 2.493
        2.7933 3.380 2.497
        2.8011 3.385 2.500
        2.8090 3.389 2.499
        2.8169 3.387 2.505
        2.8249 3.396 2.513
        2.8329 3.401 2.515
        2.8409 3.406 2.517
        2.8490 3.409 2.521
        2.8571 3.415 2.527
        2.8653 3.423 2.528
        2.8736 3.425 2.526
        2.8818 3.426 2.531
        2.8902 3.428 2.534
        2.8986 3.431 2.543
        2.9070 3.439 2.548
        2.9155 3.443 2.553
        2.9240 3.452 2.555
        2.9326 3.457 2.554
        2.9412 3.457 2.557
        2.9499 3.462 2.563
        2.9586 3.467 2.568
        2.9674 3.472 2.571
        2.9762 3.477 2.577
        2.9851 3.484 2.579
        2.9940 3.488 2.580
        3.0030 3.491 2.584
        3.0120 3.497 2.589
        3.0211 3.501 2.591
        3.0303 3.505 2.598
        3.0395 3.515 2.602
        3.0488 3.519 2.600
        3.0581 3.522 2.605
        3.0675 3.528 2.610
        3.0769 3.533 2.614
        3.0864 3.538 2.618
        3.0960 3.543 2.621
        3.1056 3.549 2.624
        3.1153 3.555 2.626
        3.1250 3.559 2.629
        3.1348 3.564 2.636
        3.1447 3.571 2.636
        3.1546 3.574 2.640
        3.1646 3.582 2.644
        3.1746 3.598 2.645
        3.1847 3.590 2.649
        3.1949 3.597 2.651
        3.2051 3.599 2.656
        3.2154 3.606 2.658
        3.2258 3.609 2.664
        3.2362 3.617 2.670
        3.2468 3.625 2.670
        3.2573 3.629 2.673
        3.2680 3.636 2.674
        3.2787 3.635 2.678
        3.2895 3.644 2.684
        3.3003 3.648 2.685
        3.3113 3.651 2.691
        3.3223 3.663 2.697
        3.3333 3.668 2.692
        3.3445 3.667 2.698
        3.3557 3.677 2.704
        3.3670 3.682 2.707
        3.3784 3.690 2.708
        3.3898 3.695 2.710
        3.4014 3.699 2.711
        3.4130 3.701 2.714
        3.4247 3.704 2.717
        3.4364 3.709 2.723
        3.4483 3.711 2.728
        3.4602 3.717 2.736
        3.4722 3.725 2.739
        3.4843 3.732 2.742
        3.4965 3.736 2.743
        3.5088 3.733 2.751
        3.5211 3.744 2.762
        3.5336 3.755 2.761
        3.5461 3.757 2.764
        3.5587 3.764 2.771
        3.5714 3.768 2.773
        3.5842 3.778 2.780
        3.5971 3.784 2.779
        3.6101 3.786 2.784
        3.6232 3.793 2.793
        3.6364 3.803 2.795
        3.6496 3.808 2.797
        3.6630 3.810 2.800
        3.6765 3.818 2.809
        3.6900 3.826 2.808
        3.7037 3.826 2.814
        3.7175 3.834 2.821
        3.7313 3.842 2.824
        3.7453 3.846 2.829
        3.7594 3.854 2.835
        3.7736 3.860 2.839
        3.7879 3.868 2.843
        3.8023 3.876 2.847
        3.8168 3.880 2.850
        3.8314 3.884 2.856
        3.8462 3.893 2.862
        3.8610 3.900 2.866
        3.8760 3.906 2.868
        3.8911 3.910 2.874
        3.9063 3.917 2.880
        3.9216 3.925 2.887
        3.9370 3.932 2.890
        3.9526 3.938 2.894
        3.9683 3.945 2.890
        3.9841 3.951 2.906
        4.0000 3.960 2.911
        4.0161 3.967 2.917
        4.0323 3.976 2.920
        4.0486 3.980 2.922
        4.0650 3.986 2.930
        4.0816 3.996 2.931
        4.0984 4.001 2.937
        4.1152 4.004 2.939
        4.1322 4.006 2.953
        4.1494 4.022 2.956
        4.1667 4.023 2.953
        4.1841 4.019 2.968
        4.2017 4.020 2.989
        4.2194 4.035 3.014
        4.2373 4.071 3.029
        4.2553 4.089 3.017
        4.2735 4.096 3.023
        4.2918 4.119 3.024
        4.3103 4.134 3.014
        4.3290 4.140 3.008
        4.3478 4.142 3.003
        4.3668 4.140 3.008
        4.3860 4.144 3.013
        4.4053 4.149 3.021
        4.4248 4.156 3.030
        4.4444 4.166 3.036
        4.4643 4.173 3.038
        4.4843 4.181 3.043
        4.5045 4.184 3.048
        4.5249 4.192 3.061
        4.5455 4.208 3.064
        4.5662 4.211 3.067
        4.5872 4.222 3.079
        4.6083 4.232 3.083
        4.6296 4.241 3.089
        4.6512 4.248 3.093
        4.6729 4.256 3.101
        4.6948 4.268 3.109
        4.7170 4.281 3.114
        4.7393 4.288 3.116
        4.7619 4.297 3.127
        4.7847 4.311 3.130
        4.8077 4.318 3.135
        4.8309 4.330 3.141
        4.8544 4.337 3.144
        4.8780 4.346 3.154
        4.9020 4.356 3.160
        4.9261 4.368 3.166
        4.9505 4.376 3.168
        4.9751 4.379 3.174
        5.0000 4.377 3.194
        5.0251 4.402 3.221
        5.0505 4.430 3.222
        5.0761 4.447 3.225
        5.1020 4.462 3.226
        5.1282 4.476 3.231
        5.1546 4.491 3.233
        5.1813 4.503 3.236
        5.2083 4.519 3.241
        5.2356 4.536 3.241
        5.2632 4.545 3.242
        5.2910 4.558 3.246
        5.3191 4.570 3.250
        5.3476 4.586 3.254
        5.3763 4.597 3.253
        5.4054 4.609 3.258
        5.4348 4.623 3.260
        5.4645 4.635 3.263
        5.4945 4.648 3.263
        5.5249 4.657 3.266
        5.5556 4.673 3.273
        5.5866 4.689 3.269
        5.6180 4.694 3.270
        5.6497 4.707 3.276
        5.6818 4.720 3.275
        5.7143 4.729 3.277
        5.7471 4.741 3.281
        5.7803 4.751 3.284
        5.8140 4.762 3.285
        5.8480 4.770 3.289
        5.8824 4.785 3.294
        5.9172 4.794 3.296
        5.9524 4.805 3.301
        5.9880 4.817 3.305
        6.0241 4.828 3.306
        6.0606 4.838 3.312
        6.0976 4.855 3.313
        6.1350 4.861 3.311
        6.1728 4.870 3.317
        6.2112 4.872 3.317
        6.2500 4.867 3.332
        6.2893 4.890 3.371
        6.3291 4.940 3.372
        6.3694 4.954 3.350
        6.4103 4.961 3.349
        6.4516 4.973 3.345
        6.4935 4.978 3.350
        6.5359 4.992 3.351
        6.5789 4.998 3.352
        6.6225 5.008 3.358
        6.6667 5.022 3.361
        6.7114 5.031 3.361
        6.7568 5.041 3.369
        6.8027 5.054 3.369
        6.8493 5.059 3.374
        6.8966 5.072 3.381
        6.9444 5.084 3.383
        6.9930 5.093 3.391
        7.0423 5.109 3.395
        7.0922 5.121 3.396
        7.1429 5.130 3.396
        7.1942 5.142 3.401
        7.2464 5.149 3.401
        7.2993 5.157 3.412
        7.3529 5.170 3.417
        7.4074 5.181 3.418
        7.4627 5.189 3.421
        7.5188 5.196 3.425
        7.5758 5.202 3.432
        7.6336 5.211 3.442
        7.6923 5.224 3.449
        7.7519 5.240 3.454
        7.7519 5.235 3.452
        7.8740 5.240 3.461
        7.9365 5.248 3.477
        8.0000 5.262 3.486
        8.0645 5.263 3.495
        8.1301 5.274 3.514
        8.1967 5.269 3.524
        8.2645 5.295 3.536
        8.3333 5.310 3.553
        8.4034 5.332 3.572
        8.4034 5.327 3.557
        8.5470 5.347 3.588
        8.6207 5.359 3.598
        8.6957 5.372 3.611
        8.7719 5.392 3.627
        8.8496 5.408 3.632
        8.9286 5.410 3.645
        9.0090 5.426 3.664
        9.0909 5.444 3.679
        9.1743 5.468 3.694
        9.2593 5.486 3.696
        9.3458 5.493 3.707
        9.4340 5.510 3.722
        9.5238 5.527 3.729
        9.6154 5.541 3.741
        9.7087 5.554 3.752
        9.8039 5.565 3.764
        9.9010 5.575 3.775
        10.0000 5.588 3.790
        10.1010 5.599 3.811
        10.2041 5.623 3.827
        10.3093 5.634 3.837
        10.4167 5.652 3.857
        10.5263 5.665 3.869
        10.6383 5.681 3.886
        10.7527 5.696 3.897
        10.8696 5.712 3.915
        10.9890 5.724 3.927
        11.1111 5.734 3.943
        11.2360 5.744 3.965
        11.3636 5.755 3.976
        11.4943 5.756 4.020
        11.6279 5.803 4.046
        11.7647 5.811 4.050
        11.9048 5.819 4.075
        12.0482 5.839 4.094
        12.1951 5.845 4.110
        12.3457 5.856 4.148
        12.5000 5.860 4.178
        12.6582 5.895 4.199
        12.8205 5.910 4.231
        12.9870 5.933 4.256
        13.1579 5.949 4.283
        13.3333 5.968 4.307
        13.5135 5.975 4.332
        13.6986 5.984 4.370
        13.8889 5.998 4.405
        14.0845 6.014 4.446
        14.2857 6.030 4.479
        14.4928 6.037 4.531
        14.7059 6.066 4.579
        14.9254 6.095 4.623
        15.1515 6.116 4.658
        15.3846 6.128 4.706
        15.6250 6.130 4.754
        15.8730 6.156 4.842
        16.1290 6.203 4.886
        16.3934 6.226 4.949
        16.6667 6.274 5.006
        16.9492 6.305 5.053
        17.2414 6.333 5.118
        17.5439 6.374 5.180
        17.8571 6.414 5.238
        18.1818 6.445 5.295
        18.5185 6.478 5.365
        18.8679 6.505 5.435
        19.2308 6.539 5.520
        19.6078 6.589 5.609
        20.0000 6.643 5.690
        20.4082 6.683 5.775
        20.8333 6.732 5.872
        21.2766 6.794 5.977
        21.7391 6.859 6.076
        22.2222 6.922 6.178
        22.7273 6.981 6.284
        23.2558 7.060 6.412
        23.8095 7.159 6.526
        24.3902 7.239 6.638
        25.0000 7.329 6.767
        25.6410 7.429 6.898
        26.3158 7.545 7.019
        27.0270 7.630 7.150
        27.7778 7.750 7.316
        28.5714 7.873 7.463
        29.4118 7.994 7.665
        30.3030 8.180 7.844
        31.2500 8.348 8.009
        32.2581 8.529 8.184
        33.3333 8.716 8.412
        34.4828 8.986 8.630
        35.7143 9.235 8.818
        37.0370 9.528 9.076
        38.4615 9.838 9.199
        40.0000 10.114 9.434
        41.6667 10.572 9.684
        43.4783 10.869 9.764
        45.4545 11.242 10.099
        47.6190 11.724 10.336
        50.0000 12.265 10.704
        52.6316 13.059 10.974
        55.5556 14.081 11.173