Titanium Pile Sample: Titanium metal powder (10-20 mesh), 41.2 kg Chemical composition Ti >99.4 % Mg 0.029 % Fe 0.084 % N 0.002 % Si < 0.01 % C 0.006 % Cl 0.084 % H cO.003 % Mn 0.002 % O 0.061 % Container: 40 cm stainless steel vessel (Type-II) Apparent density: 1.54 g/cm' Sample thickness: 0.5 mean free paths for 14 MeV neutrons Date of experiment: Aug. 31, 1988 Neutron source spectrum is given in the Table 4.5. Numerical data of measured leakage current spectrum from Ti pile of 40 cm. ======================================================== Upper Lower Lethargy Error energy energy Flux (MeV) (MeV) (1/MeV/n) ======================================================== 20.66 19.85 .001392 .0005194 19.85 19.072 .001198 .0005128 19.072 18.324 .002187 .0005675 18.324 17.605 .002533 .0005878 17.605 16.915 .006697 .0007625 16.915 16.252 .108 .002494 16.252 15.615 1.209 .008214 15.615 15.002 3.311 .01358 15.002 14.414 4.497 .0158 14.414 13.849 3.26 .01343 13.849 13.306 1.267 .008302 13.306 12.784 .434 .004823 12.784 12.283 .2548 .003682 12.283 11.801 .1725 .003024 11.801 11.339 .1334 .002663 11.339 10.894 .107 .002391 10.894 10.467 .0942 .002235 10.467 10.056 .07953 .002046 10.056 9.662 .07522 .001979 9.662 9.2832 .06488 .001834 9.2832 8.9192 .06141 .001777 8.9192 8.5694 .05574 .001684 8.5694 8.2334 .05227 .00162 8.2334 7.9106 .04832 .001549 7.9106 7.6004 .04862 .00154 7.6004 7.3024 .04841 .001526 7.3024 7.0161 .0497 .001536 7.0161 6.741 .05149 .001553 6.741 6.4766 .04945 .001518 6.4766 6.2227 .05138 .001538 6.2227 5.9787 .05485 .001578 5.9787 5.7443 .05679 .001597 5.7443 5.519 .05664 .00159 5.519 5.3026 .05815 .001603 5.3026 5.0947 .05838 .001591 4.5186 4.3414 .0672 .001616 4.3414 4.1712 .06919 .001621 4.1712 4.0076 .07021 .001616 4.0076 3.8505 .07173 .001617 3.8505 3.6995 .07403 .001621 3.6995 3.5545 .07507 .001613 3.5545 3.4151 .07555 .0016 3.4151 3.2812 .08003 .001627 3.2812 3.1525 .07876 .0016 3.1525 3.0289 .08501 .001644 3.0289 2.9101 .08958 .001671 2.9101 2.796 .1019 .001765 2.796 2.6864 .1045 .001777 2.6864 2.5811 .09608 .0017 2.5811 2.4799 .09465 .001681 2.4799 2.3826 .09176 .00165 2.3826 2.2892 .09829 .001698 2.2892 2.1994 .1007 .001711 2.1994 2.1132 .1034 .001727 2.1132 2.0303 .1019 .001708 2.0303 1.9507 .1033 .001712 1.9507 1.8742 .1033 .001706 1.8742 1.8008 .1035 .001702 1.8008 1.7301 .1072 .001724 1.7301 1.6623 .1082 .001726 1.6623 1.5971 .1171 .001788 1.5971 1.5345 .1121 .001743 1.5345 1.4743 .108 .001702 1.4743 1.4165 .1072 .001686 1.4165 1.361 .1079 .001683 1.361 1.3076 .1068 .001666 1.3076 1.2563 .1084 .00167 1.2563 1.2071 .1091 .001667 1.2071 1.1598 .1094 .001662 1.1598 1.1143 .1124 .001677 1.1143 1.0706 .107 .001632 1.0706 1.0286 .1011 .001584 1.0286 .98827 .09587 .00154 .98827 .94952 .09294 .001513 .94952 .91229 .09514 .001525 .91229 .87652 .09459 .001517 .87652 .84215 .09135 .001487 .84215 .80913 .09129 .00148 .80913 .7774 .09542 .001504 .7774 .74692 .08497 .001419 .74692 .71763 .07555 .001339 .71763 .6895 .07086 .001296 .6895 .66246 .06903 .001277 .66246 .63648 .071 .001289 .63648 .61153 .07088 .001277 .61153 .58755 .07041 .001263 .58755 .56451 .06185 .001183 .56451 .54238 .05816 .001143 .54238 .52111 .05617 .001118 .52111 .50068 .05352 .001088 .50068 .48105 .04638 .001017 .48105 .46218 .04262 .0009793 .46218 .44406 .0384 .000939 .44406 .42665 .03807 .0009371 .42665 .40992 .0346 .000903 .40992 .39385 .03564 .0009155 .39385 .3784 .03501 .0009107 .3784 .36357 .03623 .000925 .36357 .34931 .03216 .0008842 .34931 .33561 .02821 .000845 .33561 .32245 .02569 .0008203 .32245 .30981 .02708 8.46E-06 .30981 .29766 .02465 .0008167 .29766 .28599 .02717 .0008501 .28599 .27478 .02357 .0008124 .27478 .264 .01796 .0007467 .264 .25365 .0182 .0007584 .25365 .24371 .01757 .0007632 .24371 .23415 .01707 .0007696 .23415 .22497 .02129 .0008371 .22497 .21615 .02184 .0008572 .21615 .20767 .01889 .0008335 .20767 .19953 .01686 .0008204 .19953 .19171 .01329 .0007855 .19171 .18419 .008527 .0007384 .18419 .17697 .009112 .0007721 .17697 .17003 .01377 .0008664 .17003 .16336 .01473 .0009064 .16336 .15696 .01489 .0009359 .15696 .1508 .01303 .0009379 .1508 .14489 .009749 .0009188 .14489 .13921 .008864 .0009362 .13921 .13375 .007647 .0009501 .13375 .1285 .01114 .001037 .1285 .12347 .01128 .001074 .12347 .11862 .009595 .001085 .11862 .11397 .007142 .001085 .11397 .1095 .00513 .001093 .1095 .10521 .005683 .001142 .10521 .10109 .01056 .001285 .10109 .097122 .008911 .001338 .097122 .093313 .006643 .001389 .093313 .089655 .005556 .001464 .089655 .086139 .002454 .001517 .086139 .082762 .006786 .001694 .082762 .079516 .006195 .001807 .079516 .076399 .009357 .002