Q value

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A given q value (momentum transfer in reciprocal-space) corresponds to a real-space distance (d) of:

Thus, from a peak position in scattering, one can calculate the realspace repeat-structure distance:

One must be careful, however. A peak in reciprocal-space corresponds to a repeating structure in the realspace lattice; i.e. this may or may not correspond directly to particle-particle spacings.

Lookup table

q d q d q d q d
0.000100 Å−1 6283.185307 nm 0.001420 Å−1 442.340650 nm 0.020177 Å−1 31.141092 nm 0.286595 Å−1 2.192355 nm
0.000102 Å−1 6159.985595 nm 0.001449 Å−1 433.667304 nm 0.020580 Å−1 30.530482 nm 0.292327 Å−1 2.149367 nm
0.000104 Å−1 6039.201564 nm 0.001478 Å−1 425.164024 nm 0.020992 Å−1 29.931845 nm 0.298174 Å−1 2.107223 nm
0.000106 Å−1 5920.785847 nm 0.001507 Å−1 416.827474 nm 0.021411 Å−1 29.344946 nm 0.304137 Å−1 2.065905 nm
0.000108 Å−1 5804.692007 nm 0.001538 Å−1 408.654387 nm 0.021840 Å−1 28.769555 nm 0.310220 Å−1 2.025397 nm
0.000110 Å−1 5690.874517 nm 0.001568 Å−1 400.641556 nm 0.022276 Å−1 28.205446 nm 0.316424 Å−1 1.985683 nm
0.000113 Å−1 5579.288742 nm 0.001600 Å−1 392.785839 nm 0.022722 Å−1 27.652398 nm 0.322753 Å−1 1.946748 nm
0.000115 Å−1 5469.890923 nm 0.001632 Å−1 385.084156 nm 0.023176 Å−1 27.110195 nm 0.329208 Å−1 1.908577 nm
0.000117 Å−1 5362.638160 nm 0.001664 Å−1 377.533486 nm 0.023640 Å−1 26.578622 nm 0.335792 Å−1 1.871154 nm
0.000120 Å−1 5257.488392 nm 0.001698 Å−1 370.130869 nm 0.024113 Å−1 26.057473 nm 0.342508 Å−1 1.834464 nm
0.000122 Å−1 5154.400385 nm 0.001732 Å−1 362.873401 nm 0.024595 Å−1 25.546542 nm 0.349358 Å−1 1.798494 nm
0.000124 Å−1 5053.333710 nm 0.001766 Å−1 355.758236 nm 0.025087 Å−1 25.045629 nm 0.356345 Å−1 1.763230 nm
0.000127 Å−1 4954.248736 nm 0.001801 Å−1 348.782584 nm 0.025589 Å−1 24.554538 nm 0.363472 Å−1 1.728657 nm
0.000129 Å−1 4857.106604 nm 0.001837 Å−1 341.943710 nm 0.026100 Å−1 24.073077 nm 0.370742 Å−1 1.694761 nm
0.000132 Å−1 4761.869219 nm 0.001874 Å−1 335.238931 nm 0.026622 Å−1 23.601056 nm 0.378156 Å−1 1.661531 nm
0.000135 Å−1 4668.499234 nm 0.001912 Å−1 328.665619 nm 0.027155 Å−1 23.138290 nm 0.385720 Å−1 1.628952 nm
0.000137 Å−1 4576.960034 nm 0.001950 Å−1 322.221195 nm 0.027698 Å−1 22.684598 nm 0.393434 Å−1 1.597012 nm
0.000140 Å−1 4487.215719 nm 0.001989 Å−1 315.903132 nm 0.028252 Å−1 22.239802 nm 0.401303 Å−1 1.565698 nm
0.000143 Å−1 4399.231097 nm 0.002029 Å−1 309.708953 nm 0.028817 Å−1 21.803727 nm 0.409329 Å−1 1.534998 nm
0.000146 Å−1 4312.971664 nm 0.002069 Å−1 303.636229 nm 0.029393 Å−1 21.376203 nm 0.417515 Å−1 1.504900 nm
0.000149 Å−1 4228.403592 nm 0.002111 Å−1 297.682577 nm 0.029981 Å−1 20.957062 nm 0.425866 Å−1 1.475392 nm
0.000152 Å−1 4145.493718 nm 0.002153 Å−1 291.845664 nm 0.030581 Å−1 20.546139 nm 0.434383 Å−1 1.446463 nm
0.000155 Å−1 4064.209527 nm 0.002196 Å−1 286.123200 nm 0.031192 Å−1 20.143274 nm 0.443070 Å−1 1.418101 nm
0.000158 Å−1 3984.519145 nm 0.002240 Å−1 280.512941 nm 0.031816 Å−1 19.748308 nm 0.451932 Å−1 1.390295 nm
0.000161 Å−1 3906.391318 nm 0.002285 Å−1 275.012687 nm 0.032453 Å−1 19.361086 nm 0.460971 Å−1 1.363034 nm
0.000164 Å−1 3829.795410 nm 0.002330 Å−1 269.620282 nm 0.033102 Å−1 18.981457 nm 0.470190 Å−1 1.336308 nm
0.000167 Å−1 3754.701382 nm 0.002377 Å−1 264.333610 nm 0.033764 Å−1 18.609271 nm 0.479594 Å−1 1.310106 nm
0.000171 Å−1 3681.079787 nm 0.002425 Å−1 259.150598 nm 0.034439 Å−1 18.244384 nm 0.489186 Å−1 1.284417 nm
0.000174 Å−1 3608.901752 nm 0.002473 Å−1 254.069213 nm 0.035128 Å−1 17.886651 nm 0.498969 Å−1 1.259233 nm
0.000178 Å−1 3538.138972 nm 0.002522 Å−1 249.087464 nm 0.035830 Å−1 17.535932 nm 0.508949 Å−1 1.234542 nm
0.000181 Å−1 3468.763698 nm 0.002573 Å−1 244.203396 nm 0.036547 Å−1 17.192090 nm 0.519128 Å−1 1.210335 nm
0.000185 Å−1 3400.748724 nm 0.002624 Å−1 239.415094 nm 0.037278 Å−1 16.854990 nm 0.529510 Å−1 1.186603 nm
0.000188 Å−1 3334.067376 nm 0.002677 Å−1 234.720681 nm 0.038023 Å−1 16.524500 nm 0.540100 Å−1 1.163336 nm
0.000192 Å−1 3268.693506 nm 0.002730 Å−1 230.118314 nm 0.038784 Å−1 16.200491 nm 0.550902 Å−1 1.140526 nm
0.000196 Å−1 3204.601477 nm 0.002785 Å−1 225.606191 nm 0.039560 Å−1 15.882834 nm 0.561921 Å−1 1.118163 nm
0.000200 Å−1 3141.766153 nm 0.002841 Å−1 221.182540 nm 0.040351 Å−1 15.571406 nm 0.573159 Å−1 1.096238 nm
0.000204 Å−1 3080.162896 nm 0.002898 Å−1 216.845627 nm 0.041158 Å−1 15.266084 nm 0.584622 Å−1 1.074743 nm
0.000208 Å−1 3019.767545 nm 0.002955 Å−1 212.593752 nm 0.041981 Å−1 14.966749 nm 0.596315 Å−1 1.053670 nm
0.000212 Å−1 2960.556416 nm 0.003015 Å−1 208.425247 nm 0.042821 Å−1 14.673284 nm 0.608241 Å−1 1.033009 nm
0.000216 Å−1 2902.506291 nm 0.003075 Å−1 204.338478 nm 0.043677 Å−1 14.385572 nm 0.620406 Å−1 1.012754 nm
0.000221 Å−1 2845.594402 nm 0.003136 Å−1 200.331841 nm 0.044551 Å−1 14.103502 nm 0.632814 Å−1 0.992896 nm
0.000225 Å−1 2789.798434 nm 0.003199 Å−1 196.403766 nm 0.045442 Å−1 13.826963 nm 0.645470 Å−1 0.973428 nm
0.000230 Å−1 2735.096504 nm 0.003263 Å−1 192.552711 nm 0.046350 Å−1 13.555846 nm 0.658379 Å−1 0.954341 nm
0.000234 Å−1 2681.467160 nm 0.003328 Å−1 188.777168 nm 0.047277 Å−1 13.290045 nm 0.671547 Å−1 0.935628 nm
0.000239 Å−1 2628.889373 nm 0.003395 Å−1 185.075655 nm 0.048223 Å−1 13.029456 nm 0.684978 Å−1 0.917283 nm
0.000244 Å−1 2577.342523 nm 0.003463 Å−1 181.446720 nm 0.049187 Å−1 12.773976 nm 0.698678 Å−1 0.899297 nm
0.000249 Å−1 2526.806395 nm 0.003532 Å−1 177.888942 nm 0.050171 Å−1 12.523506 nm 0.712651 Å−1 0.881664 nm
0.000254 Å−1 2477.261171 nm 0.003603 Å−1 174.400923 nm 0.051175 Å−1 12.277947 nm 0.726904 Å−1 0.864376 nm
0.000259 Å−1 2428.687423 nm 0.003675 Å−1 170.981297 nm 0.052198 Å−1 12.037203 nm 0.741442 Å−1 0.847428 nm
0.000264 Å−1 2381.066101 nm 0.003748 Å−1 167.628723 nm 0.053242 Å−1 11.801180 nm 0.756271 Å−1 0.830811 nm
0.000269 Å−1 2334.378530 nm 0.003823 Å−1 164.341885 nm 0.054307 Å−1 11.569784 nm 0.771396 Å−1 0.814521 nm
0.000275 Å−1 2288.606402 nm 0.003900 Å−1 161.119495 nm 0.055393 Å−1 11.342925 nm 0.786824 Å−1 0.798550 nm
0.000280 Å−1 2243.731767 nm 0.003978 Å−1 157.960289 nm 0.056501 Å−1 11.120515 nm 0.802561 Å−1 0.782892 nm
0.000286 Å−1 2199.737026 nm 0.004057 Å−1 154.863029 nm 0.057631 Å−1 10.902466 nm 0.818612 Å−1 0.767541 nm
0.000291 Å−1 2156.604928 nm 0.004138 Å−1 151.826499 nm 0.058783 Å−1 10.688692 nm 0.834984 Å−1 0.752491 nm
0.000297 Å−1 2114.318557 nm 0.004221 Å−1 148.849509 nm 0.059959 Å−1 10.479110 nm 0.851684 Å−1 0.737737 nm
0.000303 Å−1 2072.861330 nm 0.004306 Å−1 145.930891 nm 0.061158 Å−1 10.273637 nm 0.868718 Å−1 0.723271 nm
0.000309 Å−1 2032.216990 nm 0.004392 Å−1 143.069501 nm 0.062382 Å−1 10.072193 nm 0.886092 Å−1 0.709089 nm
0.000315 Å−1 1992.369598 nm 0.004480 Å−1 140.264216 nm 0.063629 Å−1 9.874699 nm 0.903814 Å−1 0.695186 nm
0.000322 Å−1 1953.303528 nm 0.004569 Å−1 137.513938 nm 0.064902 Å−1 9.681078 nm 0.921890 Å−1 0.681555 nm
0.000328 Å−1 1915.003459 nm 0.004661 Å−1 134.817586 nm 0.066200 Å−1 9.491253 nm 0.940328 Å−1 0.668191 nm
0.000335 Å−1 1877.454371 nm 0.004754 Å−1 132.174104 nm 0.067524 Å−1 9.305150 nm 0.959135 Å−1 0.655089 nm
0.000341 Å−1 1840.641540 nm 0.004849 Å−1 129.582455 nm 0.068874 Å−1 9.122696 nm 0.978317 Å−1 0.642244 nm
0.000348 Å−1 1804.550530 nm 0.004946 Å−1 127.041622 nm 0.070252 Å−1 8.943819 nm 0.997884 Å−1 0.629651 nm
0.000355 Å−1 1769.167186 nm 0.005045 Å−1 124.550610 nm 0.071657 Å−1 8.768450 nm 1.017841 Å−1 0.617305 nm
0.000362 Å−1 1734.477633 nm 0.005146 Å−1 122.108441 nm 0.073090 Å−1 8.596520 nm 1.038198 Å−1 0.605201 nm
0.000369 Å−1 1700.468268 nm 0.005248 Å−1 119.714158 nm 0.074552 Å−1 8.427961 nm 1.058962 Å−1 0.593334 nm
0.000377 Å−1 1667.125753 nm 0.005353 Å−1 117.366822 nm 0.076043 Å−1 8.262707 nm 1.080141 Å−1 0.581700 nm
0.000384 Å−1 1634.437013 nm 0.005461 Å−1 115.065512 nm 0.077564 Å−1 8.100693 nm 1.101744 Å−1 0.570294 nm
0.000392 Å−1 1602.389228 nm 0.005570 Å−1 112.809325 nm 0.079115 Å−1 7.941856 nm 1.123779 Å−1 0.559112 nm
0.000400 Å−1 1570.969831 nm 0.005681 Å−1 110.597377 nm 0.080697 Å−1 7.786133 nm 1.146255 Å−1 0.548149 nm
0.000408 Å−1 1540.166501 nm 0.005795 Å−1 108.428801 nm 0.082311 Å−1 7.633464 nm 1.169180 Å−1 0.537401 nm
0.000416 Å−1 1509.967158 nm 0.005911 Å−1 106.302747 nm 0.083957 Å−1 7.483788 nm 1.192563 Å−1 0.526864 nm
0.000424 Å−1 1480.359959 nm 0.006029 Å−1 104.218379 nm 0.085636 Å−1 7.337047 nm 1.216414 Å−1 0.516533 nm
0.000433 Å−1 1451.333293 nm 0.006149 Å−1 102.174881 nm 0.087349 Å−1 7.193183 nm 1.240743 Å−1 0.506405 nm
0.000442 Å−1 1422.875778 nm 0.006272 Å−1 100.171452 nm 0.089096 Å−1 7.052140 nm 1.265558 Å−1 0.496476 nm
0.000450 Å−1 1394.976253 nm 0.006398 Å−1 98.207306 nm 0.090878 Å−1 6.913863 nm 1.290869 Å−1 0.486741 nm
0.000459 Å−1 1367.623777 nm 0.006526 Å−1 96.281673 nm 0.092696 Å−1 6.778297 nm 1.316686 Å−1 0.477197 nm
0.000469 Å−1 1340.807625 nm 0.006656 Å−1 94.393797 nm 0.094550 Å−1 6.645389 nm 1.343020 Å−1 0.467840 nm
0.000478 Å−1 1314.517279 nm 0.006789 Å−1 92.542938 nm 0.096441 Å−1 6.515088 nm 1.369880 Å−1 0.458667 nm
0.000488 Å−1 1288.742430 nm 0.006925 Å−1 90.728371 nm 0.098369 Å−1 6.387341 nm 1.397278 Å−1 0.449673 nm
0.000497 Å−1 1263.472971 nm 0.007064 Å−1 88.949383 nm 0.100337 Å−1 6.262099 nm 1.425223 Å−1 0.440856 nm
0.000507 Å−1 1238.698991 nm 0.007205 Å−1 87.205277 nm 0.102343 Å−1 6.139313 nm 1.453728 Å−1 0.432212 nm
0.000517 Å−1 1214.410776 nm 0.007349 Å−1 85.495370 nm 0.104390 Å−1 6.018934 nm 1.482802 Å−1 0.423737 nm
0.000528 Å−1 1190.598800 nm 0.007496 Å−1 83.818990 nm 0.106478 Å−1 5.900916 nm 1.512459 Å−1 0.415429 nm
0.000538 Å−1 1167.253725 nm 0.007646 Å−1 82.175481 nm 0.108608 Å−1 5.785211 nm 1.542708 Å−1 0.407283 nm
0.000549 Å−1 1144.366397 nm 0.007799 Å−1 80.564197 nm 0.110780 Å−1 5.671776 nm 1.573562 Å−1 0.399297 nm
0.000560 Å−1 1121.927840 nm 0.007955 Å−1 78.984506 nm 0.112995 Å−1 5.560565 nm 1.605033 Å−1 0.391468 nm
0.000571 Å−1 1099.929255 nm 0.008114 Å−1 77.435791 nm 0.115255 Å−1 5.451534 nm 1.637134 Å−1 0.383792 nm
0.000583 Å−1 1078.362015 nm 0.008276 Å−1 75.917442 nm 0.117560 Å−1 5.344641 nm 1.669876 Å−1 0.376266 nm
0.000594 Å−1 1057.217662 nm 0.008442 Å−1 74.428865 nm 0.119912 Å−1 5.239844 nm 1.703274 Å−1 0.368889 nm
0.000606 Å−1 1036.487904 nm 0.008611 Å−1 72.969475 nm 0.122310 Å−1 5.137102 nm 1.737339 Å−1 0.361656 nm
0.000618 Å−1 1016.164611 nm 0.008783 Å−1 71.538701 nm 0.124756 Å−1 5.036375 nm 1.772086 Å−1 0.354564 nm
0.000631 Å−1 996.239815 nm 0.008959 Å−1 70.135981 nm 0.127251 Å−1 4.937622 nm 1.807528 Å−1 0.347612 nm
0.000643 Å−1 976.705701 nm 0.009138 Å−1 68.760766 nm 0.129796 Å−1 4.840806 nm 1.843679 Å−1 0.340796 nm
0.000656 Å−1 957.554609 nm 0.009321 Å−1 67.412516 nm 0.132392 Å−1 4.745888 nm 1.880552 Å−1 0.334114 nm
0.000669 Å−1 938.779028 nm 0.009507 Å−1 66.090702 nm 0.135040 Å−1 4.652832 nm 1.918163 Å−1 0.327563 nm
0.000683 Å−1 920.371596 nm 0.009697 Å−1 64.794806 nm 0.137741 Å−1 4.561600 nm 1.956526 Å−1 0.321140 nm
0.000696 Å−1 902.325095 nm 0.009891 Å−1 63.524319 nm 0.140496 Å−1 4.472157 nm 1.995657 Å−1 0.314843 nm
0.000710 Å−1 884.632446 nm 0.010089 Å−1 62.278744 nm 0.143306 Å−1 4.384467 nm 2.035570 Å−1 0.308670 nm
0.000724 Å−1 867.286711 nm 0.010291 Å−1 61.057592 nm 0.146172 Å−1 4.298497 nm 2.076281 Å−1 0.302617 nm
0.000739 Å−1 850.281090 nm 0.010496 Å−1 59.860385 nm 0.149095 Å−1 4.214213 nm 2.117807 Å−1 0.296684 nm
0.000754 Å−1 833.608911 nm 0.010706 Å−1 58.686652 nm 0.152077 Å−1 4.131581 nm 2.160163 Å−1 0.290866 nm
0.000769 Å−1 817.263639 nm 0.010920 Å−1 57.535933 nm 0.155119 Å−1 4.050570 nm 2.203366 Å−1 0.285163 nm
0.000784 Å−1 801.238861 nm 0.011139 Å−1 56.407778 nm 0.158221 Å−1 3.971147 nm 2.247434 Å−1 0.279572 nm
0.000800 Å−1 785.528295 nm 0.011362 Å−1 55.301743 nm 0.161385 Å−1 3.893281 nm 2.292382 Å−1 0.274090 nm
0.000816 Å−1 770.125780 nm 0.011589 Å−1 54.217395 nm 0.164613 Å−1 3.816943 nm 2.338230 Å−1 0.268715 nm
0.000832 Å−1 755.025274 nm 0.011821 Å−1 53.154309 nm 0.167905 Å−1 3.742101 nm 2.384995 Å−1 0.263447 nm
0.000849 Å−1 740.220857 nm 0.012057 Å−1 52.112067 nm 0.171263 Å−1 3.668726 nm 2.432695 Å−1 0.258281 nm
0.000866 Å−1 725.706723 nm 0.012298 Å−1 51.090262 nm 0.174689 Å−1 3.596790 nm 2.481349 Å−1 0.253217 nm
0.000883 Å−1 711.477179 nm 0.012544 Å−1 50.088492 nm 0.178182 Å−1 3.526265 nm 2.530976 Å−1 0.248252 nm
0.000901 Å−1 697.526646 nm 0.012795 Å−1 49.106365 nm 0.181746 Å−1 3.457123 nm 2.581595 Å−1 0.243384 nm
0.000919 Å−1 683.849653 nm 0.013051 Å−1 48.143495 nm 0.185381 Å−1 3.389336 nm 2.633227 Å−1 0.238612 nm
0.000937 Å−1 670.440836 nm 0.013312 Å−1 47.199505 nm 0.189089 Å−1 3.322878 nm 2.685891 Å−1 0.233933 nm
0.000956 Å−1 657.294938 nm 0.013578 Å−1 46.274024 nm 0.192870 Å−1 3.257724 nm 2.739609 Å−1 0.229346 nm
0.000975 Å−1 644.406802 nm 0.013850 Å−1 45.366691 nm 0.196728 Å−1 3.193847 nm 2.794401 Å−1 0.224849 nm
0.000995 Å−1 631.771374 nm 0.014127 Å−1 44.477148 nm 0.200662 Å−1 3.131222 nm 2.850289 Å−1 0.220440 nm
0.001014 Å−1 619.383700 nm 0.014409 Å−1 43.605047 nm 0.204676 Å−1 3.069826 nm 2.907295 Å−1 0.216118 nm
0.001035 Å−1 607.238922 nm 0.014697 Å−1 42.750046 nm 0.208769 Å−1 3.009633 nm 2.965441 Å−1 0.211880 nm
0.001055 Å−1 595.332276 nm 0.014991 Å−1 41.911810 nm 0.212945 Å−1 2.950621 nm 3.024750 Å−1 0.207726 nm
0.001077 Å−1 583.659094 nm 0.015291 Å−1 41.090009 nm 0.217203 Å−1 2.892765 nm 3.085245 Å−1 0.203653 nm
0.001098 Å−1 572.214798 nm 0.015597 Å−1 40.284323 nm 0.221547 Å−1 2.836045 nm 3.146950 Å−1 0.199660 nm
0.001120 Å−1 560.994900 nm 0.015909 Å−1 39.494434 nm 0.225978 Å−1 2.780436 nm 3.209889 Å−1 0.195745 nm
0.001142 Å−1 549.995000 nm 0.016227 Å−1 38.720034 nm 0.230498 Å−1 2.725918 nm 3.274087 Å−1 0.191907 nm
0.001165 Å−1 539.210785 nm 0.016552 Å−1 37.960817 nm 0.235108 Å−1 2.672468 nm 3.339568 Å−1 0.188144 nm
0.001189 Å−1 528.638024 nm 0.016883 Å−1 37.216488 nm 0.239810 Å−1 2.620067 nm 3.406360 Å−1 0.184455 nm
0.001212 Å−1 518.272573 nm 0.017220 Å−1 36.486752 nm 0.244606 Å−1 2.568693 nm 3.474487 Å−1 0.180838 nm
0.001237 Å−1 508.110365 nm 0.017565 Å−1 35.771326 nm 0.249498 Å−1 2.518326 nm 3.543977 Å−1 0.177292 nm
0.001261 Å−1 498.147417 nm 0.017916 Å−1 35.069927 nm 0.254488 Å−1 2.468947 nm 3.614856 Å−1 0.173816 nm
0.001287 Å−1 488.379821 nm 0.018274 Å−1 34.382282 nm 0.259578 Å−1 2.420537 nm 3.687153 Å−1 0.170407 nm
0.001312 Å−1 478.803746 nm 0.018640 Å−1 33.708119 nm 0.264770 Å−1 2.373075 nm 3.760896 Å−1 0.167066 nm
0.001339 Å−1 469.415437 nm 0.019013 Å−1 33.047176 nm 0.270065 Å−1 2.326544 nm 3.836114 Å−1 0.163790 nm
0.001365 Å−1 460.211213 nm 0.019393 Å−1 32.399192 nm 0.275466 Å−1 2.280926 nm 3.912837 Å−1 0.160579 nm
0.001393 Å−1 451.187463 nm 0.019781 Å−1 31.763914 nm 0.280976 Å−1 2.236202 nm 3.991093 Å−1 0.157430 nm