# 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: |
    n<sub>α</sub>, k<sub>α</sub>.
CONDITIONS:
    direction: alpha
DATA:
  - type: tabulated nk
    data: |
        2.5000 1.559 0.000
        2.5063 1.559 0.000
        2.5126 1.559 0.000
        2.5189 1.559 0.000
        2.5253 1.559 0.000
        2.5316 1.559 0.000
        2.5381 1.559 0.001
        2.5445 1.559 0.001
        2.5510 1.559 0.001
        2.5575 1.559 0.002
        2.5641 1.559 0.002
        2.5707 1.559 0.002
        2.5773 1.559 0.002
        2.5840 1.559 0.002
        2.5907 1.559 0.002
        2.5974 1.559 0.002
        2.6042 1.559 0.002
        2.6110 1.559 0.002
        2.6178 1.559 0.002
        2.6247 1.559 0.001
        2.6316 1.559 0.001
        2.6385 1.559 0.000
        2.6455 1.558 0.000
        2.6525 1.558 0.000
        2.6596 1.557 0.000
        2.6667 1.556 0.000
        2.6738 1.556 0.000
        2.6810 1.555 0.000
        2.6882 1.554 0.000
        2.6954 1.553 0.000
        2.7027 1.552 0.000
        2.7100 1.551 0.000
        2.7174 1.550 0.000
        2.7248 1.549 0.000
        2.7322 1.547 0.000
        2.7397 1.546 0.000
        2.7473 1.546 0.000
        2.7548 1.544 0.000
        2.7624 1.544 0.000
        2.7701 1.543 0.001
        2.7778 1.543 0.001
        2.7855 1.542 0.002
        2.7933 1.541 0.003
        2.8011 1.541 0.003
        2.8090 1.541 0.003
        2.8169 1.540 0.004
        2.8249 1.540 0.004
        2.8329 1.540 0.005
        2.8409 1.539 0.005
        2.8490 1.539 0.005
        2.8571 1.539 0.006
        2.8653 1.538 0.006
        2.8736 1.538 0.006
        2.8818 1.538 0.006
        2.8902 1.537 0.006
        2.8986 1.536 0.007
        2.9070 1.536 0.007
        2.9155 1.536 0.007
        2.9240 1.535 0.008
        2.9326 1.535 0.008
        2.9412 1.534 0.008
        2.9499 1.533 0.008
        2.9586 1.533 0.009
        2.9674 1.532 0.009
        2.9762 1.532 0.010
        2.9851 1.531 0.010
        2.9940 1.530 0.010
        3.0030 1.530 0.011
        3.0120 1.529 0.012
        3.0211 1.528 0.013
        3.0303 1.528 0.013
        3.0395 1.528 0.015
        3.0488 1.527 0.015
        3.0581 1.527 0.016
        3.0675 1.527 0.016
        3.0769 1.527 0.017
        3.0864 1.526 0.017
        3.0960 1.526 0.018
        3.1056 1.526 0.019
        3.1153 1.525 0.020
        3.1250 1.525 0.021
        3.1348 1.525 0.022
        3.1447 1.525 0.023
        3.1546 1.525 0.024
        3.1646 1.526 0.025
        3.1746 1.526 0.025
        3.1847 1.526 0.026
        3.1949 1.527 0.027
        3.2051 1.527 0.027
        3.2154 1.527 0.028
        3.2258 1.528 0.028
        3.2362 1.528 0.029
        3.2468 1.529 0.029
        3.2573 1.530 0.029
        3.2680 1.530 0.029
        3.2787 1.531 0.029
        3.2895 1.531 0.029
        3.3003 1.531 0.028
        3.3113 1.531 0.028
        3.3223 1.531 0.028
        3.3333 1.531 0.028
        3.3445 1.531 0.028
        3.3557 1.531 0.028
        3.3670 1.531 0.027
        3.3784 1.531 0.028
        3.3898 1.531 0.028
        3.4014 1.531 0.028
        3.4130 1.531 0.028
        3.4247 1.531 0.028
        3.4364 1.531 0.028
        3.4483 1.531 0.028
        3.4602 1.531 0.028
        3.4722 1.531 0.028
        3.4843 1.532 0.028
        3.4965 1.533 0.028
        3.5088 1.533 0.028
        3.5211 1.533 0.027
        3.5336 1.533 0.027
        3.5461 1.534 0.026
        3.5587 1.533 0.025
        3.5714 1.533 0.025
        3.5842 1.533 0.024
        3.5971 1.533 0.023
        3.6101 1.532 0.023
        3.6232 1.532 0.022
        3.6364 1.531 0.021
        3.6496 1.530 0.021
        3.6630 1.530 0.021
        3.6765 1.530 0.020
        3.6900 1.529 0.020
        3.7037 1.529 0.019
        3.7175 1.528 0.019
        3.7313 1.527 0.019
        3.7453 1.527 0.018
        3.7594 1.527 0.018
        3.7736 1.526 0.017
        3.7879 1.526 0.016
        3.8023 1.525 0.015
        3.8168 1.524 0.015
        3.8314 1.523 0.014
        3.8462 1.522 0.013
        3.8610 1.521 0.012
        3.8760 1.519 0.012
        3.8911 1.518 0.012
        3.9063 1.516 0.012
        3.9216 1.515 0.012
        3.9370 1.514 0.011
        3.9526 1.512 0.012
        3.9683 1.511 0.011
        3.9841 1.510 0.012
        4.0000 1.509 0.012
        4.0161 1.507 0.011
        4.0323 1.506 0.011
        4.0486 1.505 0.011
        4.0650 1.503 0.011
        4.0816 1.502 0.011
        4.0984 1.500 0.011
        4.1152 1.498 0.012
        4.1322 1.496 0.012
        4.1494 1.495 0.012
        4.1667 1.493 0.013
        4.1841 1.491 0.013
        4.2017 1.489 0.014
        4.2194 1.488 0.015
        4.2373 1.486 0.016
        4.2553 1.484 0.016
        4.2735 1.481 0.018
        4.2918 1.481 0.020
        4.3103 1.481 0.021
        4.3290 1.479 0.021
        4.3478 1.478 0.022
        4.3668 1.476 0.023
        4.3860 1.474 0.025
        4.4053 1.472 0.026
        4.4248 1.470 0.028
        4.4444 1.468 0.032
        4.4643 1.468 0.036
        4.4843 1.470 0.038
        4.5045 1.472 0.039
        4.5249 1.472 0.039
        4.5455 1.472 0.040
        4.5662 1.471 0.040
        4.5872 1.471 0.040
        4.6083 1.468 0.041
        4.6296 1.465 0.044
        4.6512 1.465 0.048
        4.6729 1.468 0.053
        4.6948 1.472 0.054
        4.7170 1.474 0.053
        4.7393 1.476 0.053
        4.7619 1.478 0.051
        4.7847 1.478 0.049
        4.8077 1.478 0.047
        4.8309 1.477 0.046
        4.8544 1.476 0.045
        4.8780 1.475 0.044
        4.9020 1.472 0.044
        4.9261 1.471 0.044
        4.9505 1.470 0.046
        4.9751 1.471 0.046
        5.0000 1.470 0.045
        5.0251 1.469 0.044
        5.0505 1.467 0.045
        5.0761 1.467 0.046
        5.1020 1.467 0.046
        5.1282 1.467 0.045
        5.1546 1.466 0.043
        5.1813 1.465 0.042
        5.2083 1.462 0.041
        5.2356 1.460 0.041
        5.2632 1.458 0.041
        5.2910 1.456 0.041
        5.3191 1.455 0.041
        5.3476 1.452 0.041
        5.3763 1.450 0.041
        5.4054 1.449 0.042
        5.4348 1.447 0.041
        5.4645 1.445 0.041
        5.4945 1.443 0.041
        5.5249 1.440 0.042
        5.5556 1.438 0.042
        5.5866 1.436 0.043
        5.6180 1.435 0.043
        5.6497 1.433 0.043
        5.6818 1.430 0.042
        5.7143 1.427 0.043
        5.7471 1.424 0.044
        5.7803 1.422 0.045
        5.8140 1.420 0.045
        5.8480 1.418 0.045
        5.8824 1.415 0.046
        5.9172 1.413 0.047
        5.9524 1.411 0.047
        5.9880 1.409 0.047
        6.0241 1.406 0.047
        6.0606 1.404 0.046
        6.0976 1.400 0.045
        6.1350 1.396 0.045
        6.1728 1.393 0.046
        6.2112 1.390 0.047
        6.2500 1.387 0.046
        6.2893 1.384 0.045
        6.3291 1.380 0.044
        6.3694 1.375 0.043
        6.4103 1.370 0.042
        6.4516 1.364 0.042
        6.4935 1.358 0.040
        6.5359 1.352 0.041
        6.5789 1.346 0.042
        6.6225 1.340 0.041
        6.6667 1.334 0.041
        6.7114 1.327 0.040
        6.7568 1.318 0.039
        6.8027 1.310 0.039
        6.8493 1.302 0.040
        6.8966 1.293 0.039
        6.9444 1.283 0.037
        6.9930 1.271 0.037
        7.0423 1.259 0.038
        7.0922 1.247 0.038
        7.1429 1.234 0.038
        7.1942 1.220 0.039
        7.2464 1.205 0.038
        7.2993 1.188 0.037
        7.3529 1.168 0.036
        7.4074 1.146 0.036
        7.4627 1.122 0.035
        7.5188 1.086 0.034
        7.5758 1.062 0.033
        7.6336 1.020 0.042
        7.6923 0.991 0.045
        7.7519 0.945 0.037
        7.8125 0.869 0.039
        7.8740 0.787 0.042
        7.9365 0.671 0.056
        8.0000 0.525 0.097
        8.0645 0.294 0.199
        8.1301 0.152 0.510
        8.1967 0.160 0.780
        8.2645 0.178 1.027
        8.3333 0.201 1.202
        8.4034 0.217 1.520
        8.4746 0.281 1.885
        8.5470 0.411 2.403
        8.6207 0.782 3.289
        8.6957 3.586 4.802
        8.7719 4.018 1.063
        8.8496 3.155 0.545
        8.9286 2.753 0.382
        9.0090 2.519 0.305
        9.0909 2.345 0.256
        9.1743 2.226 0.229
        9.2593 2.130 0.211
        9.3458 2.062 0.200
        9.4340 2.000 0.188
        9.5238 1.952 0.183
        9.6154 1.912 0.180
        9.7087 1.878 0.172
        9.8039 1.830 0.170
        9.9010 1.836 0.192
        10.0000 1.808 0.167
        10.1010 1.786 0.161
        10.2041 1.763 0.157
        10.3093 1.744 0.156
        10.4167 1.730 0.154
        10.5263 1.713 0.152
        10.6383 1.695 0.148
        10.7527 1.684 0.147
        10.8696 1.667 0.149
        10.9890 1.655 0.150
        11.1111 1.644 0.148
        11.2360 1.632 0.144
        11.3636 1.623 0.142
        11.4943 1.610 0.141
        11.6279 1.589 0.139
        11.7647 1.578 0.134
        11.9048 1.563 0.132
        12.0482 1.552 0.132
        12.1951 1.538 0.130
        12.3457 1.517 0.135
        12.5000 1.499 0.126
        12.6582 1.476 0.121
        12.8205 1.450 0.125
        12.9870 1.429 0.115
        13.1579 1.394 0.115
        13.3333 1.355 0.113
        13.5135 1.306 0.108
        13.6986 1.243 0.098
        13.8889 1.157 0.087
        14.0845 1.001 0.070
        14.2857 0.569 0.079
        14.4928 0.165 0.844
        14.7059 0.319 1.836
        14.9254 2.880 3.286
        15.1515 2.637 0.591
        15.3846 2.198 0.377
        15.6250 2.012 0.312
        15.8730 1.911 0.285
        16.1290 1.845 0.259
        16.3934 1.805 0.232
        16.6667 1.745 0.197
        16.9492 1.695 0.193
        17.2414 1.664 0.194
        17.5439 1.639 0.189
        17.8571 1.609 0.190
        18.1818 1.580 0.184
        18.5185 1.558 0.182
        18.8679 1.525 0.173
        19.2308 1.488 0.179
        19.6078 1.493 0.222
        20.0000 1.493 0.183
        20.4082 1.462 0.161
        20.8333 1.428 0.153
        21.2766 1.401 0.146
        21.7391 1.370 0.144
        22.2222 1.335 0.135
        22.7273 1.304 0.123
        23.2558 1.255 0.120
        23.8095 1.215 0.115
        24.3902 1.155 0.115
        25.0000 1.104 0.115
        25.6410 1.038 0.106
        26.3158 0.947 0.110
        27.0270 0.843 0.123
        27.7778 0.764 0.117
        28.5714 0.569 0.145
        29.4118 0.426 0.294
        30.3030 0.340 0.433
        31.2500 0.269 0.582
        32.2581 0.222 0.736
        33.3333 0.194 0.895
        34.4828 0.202 1.045
        35.7143 0.208 1.176
        37.0370 0.216 1.321
        38.4615 0.244 1.474
        40.0000 0.301 1.633
        41.6667 0.398 1.808
        43.4783 0.651 1.983
        45.4545 1.002 1.782
        47.6190 0.980 1.498
        50.0000 0.896 1.335
        52.6316 0.748 1.098
        55.5556 0.407 0.583