# 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>
COMMENTS: |
    Diesel soot sample obtained at New Mexico State University by open burning of diesel fuel. Sample heated to to about 320 °C for about one-half hour to drive off any unburned hydrocarbons.
DATA:
  - type: tabulated nk
    data: |
        0.2600 1.306 0.155
        0.2800 1.329 0.171
        0.3000 1.350 0.184
        0.3200 1.367 0.196
        0.3400 1.384 0.206
        0.3600 1.400 0.216
        0.3800 1.417 0.223
        0.4000 1.431 0.228
        0.4200 1.444 0.232
        0.4400 1.455 0.235
        0.4600 1.466 0.239
        0.4800 1.476 0.242
        0.5000 1.485 0.243
        0.5200 1.494 0.245
        0.5400 1.502 0.248
        0.5600 1.510 0.249
        0.5800 1.516 0.250
        0.6000 1.522 0.253
        0.6200 1.528 0.254
        0.6400 1.533 0.256
        0.6600 1.539 0.260
        0.6800 1.545 0.262
        0.7000 1.552 0.264
        0.7200 1.557 0.267
        0.7400 1.563 0.269
        0.7600 1.570 0.271
        0.7800 1.576 0.273
        0.8000 1.583 0.273
        0.8200 1.587 0.272
        0.8400 1.592 0.274
        0.8600 1.596 0.275
        0.8800 1.600 0.276
        0.9000 1.605 0.277
        0.9200 1.609 0.278
        0.9400 1.614 0.279
        0.9600 1.618 0.280
        0.9800 1.622 0.282
        1.0000 1.626 0.283
        1.0200 1.631 0.284
        1.0400 1.635 0.284
        1.0600 1.638 0.285
        1.0800 1.642 0.286
        1.1000 1.646 0.287
        1.1200 1.650 0.288
        1.1400 1.654 0.288
        1.1600 1.657 0.289
        1.1800 1.661 0.290
        1.2000 1.664 0.290
        1.2200 1.668 0.292
        1.2400 1.671 0.292
        1.2600 1.674 0.293
        1.2800 1.678 0.293
        1.3000 1.681 0.294
        1.3200 1.685 0.295
        1.3400 1.688 0.295
        1.3600 1.691 0.296
        1.3800 1.694 0.296
        1.4000 1.697 0.297
        1.4200 1.700 0.297
        1.4400 1.703 0.297
        1.4600 1.706 0.298
        1.4800 1.709 0.298
        1.5000 1.712 0.299
        1.5200 1.715 0.299
        1.5400 1.718 0.299
        1.5600 1.720 0.299
        1.5800 1.723 0.300
        1.6000 1.725 0.300
        1.6200 1.728 0.301
        1.6400 1.731 0.301
        1.6600 1.734 0.302
        1.6800 1.736 0.302
        1.7000 1.739 0.302
        1.7200 1.741 0.302
        1.7400 1.743 0.303
        1.7600 1.746 0.303
        1.7800 1.748 0.303
        1.8000 1.751 0.304
        1.8200 1.753 0.304
        1.8400 1.755 0.304
        1.8600 1.757 0.304
        1.8800 1.759 0.305
        1.9000 1.761 0.305
        1.9200 1.763 0.306
        1.9400 1.765 0.306
        1.9600 1.767 0.307
        1.9800 1.769 0.307
        2.0000 1.771 0.308
        2.0200 1.773 0.309
        2.0400 1.775 0.311
        2.0600 1.778 0.312
        2.0800 1.780 0.313
        2.1000 1.783 0.314
        2.1200 1.785 0.314
        2.1400 1.788 0.315
        2.1600 1.791 0.316
        2.1800 1.794 0.317
        2.2000 1.797 0.317
        2.2200 1.800 0.318
        2.2400 1.803 0.318
        2.2600 1.806 0.318
        2.2800 1.809 0.319
        2.3000 1.812 0.318
        2.3200 1.815 0.319
        2.3400 1.819 0.318
        2.3600 1.822 0.318
        2.3800 1.825 0.317
        2.4000 1.827 0.317
        2.4200 1.830 0.316
        2.4400 1.833 0.315
        2.4600 1.836 0.314
        2.4800 1.839 0.312
        2.5000 1.842 0.311
        2.5126 1.841 0.309
        2.5253 1.842 0.309
        2.5381 1.843 0.309
        2.5510 1.845 0.308
        2.5641 1.845 0.307
        2.5773 1.846 0.307
        2.5907 1.847 0.306
        2.6042 1.849 0.305
        2.6178 1.849 0.304
        2.6316 1.849 0.305
        2.6455 1.852 0.305
        2.6596 1.852 0.303
        2.6738 1.853 0.306
        2.6882 1.855 0.302
        2.7027 1.854 0.304
        2.7174 1.857 0.303
        2.7322 1.857 0.303
        2.7473 1.858 0.302
        2.7624 1.858 0.303
        2.7778 1.860 0.303
        2.7933 1.862 0.302
        2.8090 1.863 0.301
        2.8249 1.864 0.300
        2.8409 1.864 0.300
        2.8571 1.865 0.301
        2.8736 1.869 0.300
        2.8902 1.867 0.298
        2.9070 1.870 0.300
        2.9240 1.871 0.297
        2.9412 1.872 0.299
        2.9586 1.874 0.298
        2.9762 1.875 0.297
        2.9940 1.875 0.296
        3.0120 1.876 0.296
        3.0303 1.877 0.295
        3.0488 1.878 0.293
        3.0675 1.877 0.295
        3.0864 1.880 0.297
        3.1056 1.881 0.294
        3.1250 1.881 0.296
        3.1447 1.884 0.295
        3.1646 1.885 0.293
        3.1847 1.884 0.293
        3.2051 1.885 0.294
        3.2258 1.886 0.295
        3.2468 1.890 0.296
        3.2680 1.891 0.293
        3.2895 1.892 0.295
        3.3113 1.895 0.293
        3.3333 1.896 0.291
        3.3557 1.896 0.289
        3.3784 1.896 0.291
        3.4014 1.899 0.290
        3.4247 1.898 0.289
        3.4483 1.900 0.289
        3.4722 1.900 0.290
        3.4965 1.903 0.290
        3.5211 1.904 0.289
        3.5461 1.905 0.289
        3.5714 1.908 0.288
        3.5971 1.908 0.287
        3.6232 1.909 0.286
        3.6496 1.909 0.287
        3.6765 1.911 0.287
        3.7037 1.912 0.286
        3.7313 1.915 0.285
        3.7594 1.913 0.282
        3.7879 1.913 0.286
        3.8168 1.917 0.285
        3.8462 1.918 0.284
        3.8760 1.918 0.284
        3.9063 1.920 0.285
        3.9370 1.922 0.283
        3.9683 1.922 0.281
        4.0000 1.923 0.282
        4.0323 1.924 0.284
        4.0650 1.927 0.282
        4.0984 1.929 0.281
        4.1322 1.930 0.280
        4.1667 1.932 0.279
        4.2017 1.932 0.276
        4.2373 1.929 0.275
        4.2735 1.929 0.276
        4.3103 1.929 0.279
        4.3478 1.933 0.280
        4.3860 1.936 0.280
        4.4248 1.938 0.278
        4.4643 1.938 0.278
        4.5045 1.937 0.278
        4.5455 1.940 0.278
        4.5872 1.941 0.277
        4.6296 1.942 0.277
        4.6729 1.943 0.276
        4.7170 1.945 0.275
        4.7619 1.944 0.274
        4.8077 1.945 0.275
        4.8544 1.946 0.274
        4.9020 1.946 0.273
        4.9505 1.944 0.275
        5.0000 1.946 0.279
        5.0505 1.952 0.279
        5.1020 1.954 0.276
        5.1546 1.954 0.275
        5.2083 1.955 0.274
        5.2632 1.954 0.273
        5.3191 1.955 0.273
        5.3763 1.955 0.271
        5.4348 1.956 0.270
        5.4945 1.953 0.270
        5.5556 1.951 0.271
        5.6180 1.949 0.275
        5.6818 1.950 0.278
        5.7471 1.953 0.281
        5.8140 1.956 0.280
        5.8824 1.955 0.277
        5.9524 1.950 0.278
        6.0241 1.944 0.285
        6.0976 1.944 0.294
        6.1728 1.947 0.303
        6.2500 1.956 0.314
        6.3291 1.971 0.315
        6.4103 1.977 0.308
        6.4935 1.979 0.307
        6.5789 1.980 0.306
        6.6667 1.983 0.305
        6.7568 1.982 0.305
        6.8493 1.983 0.309
        6.9444 1.986 0.313
        7.0423 1.989 0.313
        7.1429 1.990 0.314
        7.2464 1.991 0.319
        7.3529 1.996 0.323
        7.4627 2.000 0.327
        7.5758 2.005 0.330
        7.6923 2.009 0.334
        7.8125 2.017 0.339
        7.9365 2.025 0.343
        8.0645 2.034 0.344
        8.1967 2.042 0.345
        8.3333 2.052 0.344
        8.4746 2.060 0.341
        8.6207 2.066 0.339
        8.7719 2.075 0.340
        8.9286 2.083 0.333
        9.0909 2.087 0.330
        9.2593 2.093 0.325
        9.4340 2.097 0.322
        9.6154 2.102 0.319
        9.8039 2.106 0.314
        10.0000 2.108 0.310
        10.2041 2.109 0.306
        10.4167 2.110 0.303
        10.6383 2.109 0.299
        10.8696 2.105 0.303
        11.1111 2.108 0.308
        11.3636 2.117 0.311
        11.6279 2.120 0.308
        11.9048 2.122 0.314
        12.1951 2.132 0.315
        12.5000 2.139 0.312
        12.8205 2.139 0.310
        13.1579 2.145 0.317
        13.5135 2.159 0.314
        13.8889 2.162 0.307
        14.2857 2.163 0.306
        14.7059 2.168 0.309
        15.1515 2.173 0.308
        15.6250 2.177 0.311
        16.1290 2.187 0.313
        16.6667 2.195 0.309
        17.2414 2.199 0.307
        17.8571 2.204 0.307
        18.5185 2.210 0.307
        19.2308 2.216 0.309
        20.0000 2.223 0.308
        20.8333 2.229 0.311
        21.7391 2.238 0.312
        22.7273 2.245 0.315
        23.8095 2.254 0.316
        25.0000 2.265 0.318
        26.3158 2.276 0.319
        27.7778 2.288 0.319
        29.4118 2.296 0.319
        31.2500 2.307 0.323
        33.3333 2.318 0.325
        35.7143 2.333 0.331
        38.4615 2.348 0.337
        41.6667 2.372 0.345
        45.4545 2.397 0.342
        50.0000 2.416 0.347
        55.5556 2.449 0.351