ENTRY 13936 20100525 13641393600000001 SUBENT 13936001 20100525 13641393600100001 BIB 11 26 1393600100002 INSTITUTE (1USALAS,2FR BRC) 1393600100003 REFERENCE (J,PL/B,575,221,200311) 1393600100004 AUTHOR (T.Ethvignot,M.Devlin,R.Drosg,T.Granier,R.C.Haight, 1393600100005 B.Morillon,R.O.Nelson,J.M.O'Donnell,D.Rochman) 1393600100006 TITLE Prompt-fission-neutron average energy for 238(n,f) 1393600100007 from threshold to 200 MeV 1393600100008 FACILITY (ACCEL,1USALAS) FIGARO beam line installed at the 1393600100009 Weapons Neutron Research Center at the Los 1393600100010 Alamos Neutron Science Center (LANSCE) 1393600100011 INC-SOURCE (SPALL) Spallation neutron source. 1393600100012 INC-SPECT The incident neutron spectrum was similar to a 1393600100013 Maxwellian distribution with a temperature of about 1393600100014 2 MeV and a high energy tail. 1393600100015 DETECTOR (SCIN) 5 Liquid scintillators EJ213, 12.5 cm in 1393600100016 diameter and 5 cm thick coupled to photo-multiplier 1393600100017 tubes. Efficiency was determined from the analysis 1393600100018 of the energy spectrum around 2.9 MeV incident 1393600100019 neutron energy. 1393600100020 METHOD (TOF) Double time-of-flight measurement. 1393600100021 SAMPLE 94-layer ionization fission chamber, containing 1393600100022 380 mg of pure U238, 10 cm long. Each layer 1393600100023 consists of a stainless steel backing with 1393600100024 deposits of 2 mg of U238 on both sides. 1393600100025 HISTORY (20041123C) DR 1393600100026 (20091212A) Subentries 2 and 3 updated. 1393600100027 (20100525A) Subentry 13936.003 corrected. 1393600100028 ENDBIB 26 0 1393600100029 NOCOMMON 0 0 1393600100030 ENDSUBENT 29 0 1393600199999 SUBENT 13936002 20091212 13571393600200001 BIB 5 7 1393600200002 REACTION (92-U-238(N,F)0-NN-1,PAR,KE) 1393600200003 ERR-ANALYS (DATA-ERR) Statistical and systematic uncertainties 1393600200004 are given together. 1393600200005 MISC-COL (MISC) Standard deviation of emitted neutrons in 1393600200006 238U(n,f). 1393600200007 STATUS (TABLE) Data received by author in tables. 1393600200008 HISTORY (20091212A) Reaction corrected. 1393600200009 ENDBIB 7 0 1393600200010 COMMON 2 3 1393600200011 E-MIN E-MAX 1393600200012 MEV MEV 1393600200013 0.65 7.5 1393600200014 ENDCOMMON 3 0 1393600200015 DATA 6 59 1393600200016 EN EN-ERR DATA DATA-ERR MISC MISC-ERR 1393600200017 MEV MEV MEV MEV MEV MEV 1393600200018 1.58577 0.00862 2.279250 0.029023 1.36899 0.02902 1393600200019 2.08913 0.01305 2.255870 0.029102 1.37236 0.02910 1393600200020 2.53457 0.01747 2.278140 0.030582 1.38328 0.03058 1393600200021 3.05136 0.02313 2.296090 0.031090 1.37310 0.03109 1393600200022 3.65418 0.03030 2.339050 0.032359 1.39061 0.03236 1393600200023 4.35097 0.03937 2.318930 0.031892 1.39366 0.03189 1393600200024 5.06410 0.04945 2.359980 0.037140 1.40683 0.03714 1393600200025 5.74700 0.05981 2.332590 0.038970 1.40651 0.03897 1393600200026 6.41433 0.07062 2.316260 0.038018 1.39179 0.03802 1393600200027 7.03439 0.08115 2.289770 0.035035 1.35777 0.03503 1393600200028 7.81227 0.09498 2.235250 0.031111 1.36068 0.03111 1393600200029 8.88002 0.11525 2.238440 0.029063 1.33841 0.02906 1393600200030 10.30310 0.14421 2.285230 0.029482 1.36364 0.02948 1393600200031 12.19500 0.18587 2.328340 0.029088 1.35155 0.02909 1393600200032 14.59380 0.24384 2.330620 0.029056 1.38941 0.02906 1393600200033 17.11050 0.31014 2.292340 0.028140 1.36522 0.02814 1393600200034 19.77880 0.38631 2.343020 0.029374 1.38736 0.02937 1393600200035 22.30190 0.46348 2.319240 0.029849 1.37764 0.02985 1393600200036 24.90790 0.54815 2.335740 0.028611 1.37845 0.02861 1393600200037 27.67720 0.64353 2.361770 0.029719 1.39023 0.02972 1393600200038 30.39030 0.74198 2.354620 0.029751 1.40407 0.02975 1393600200039 33.12460 0.84620 2.379450 0.031223 1.41750 0.03122 1393600200040 35.80970 0.95322 2.364440 0.030295 1.41388 0.03029 1393600200041 38.53100 1.06618 2.361920 0.029964 1.39757 0.02996 1393600200042 41.24180 1.18317 2.349080 0.030700 1.42049 0.03070 1393600200043 43.98470 1.30598 2.416520 0.032015 1.44467 0.03202 1393600200044 46.82620 1.43781 2.416710 0.032196 1.43811 0.03220 1393600200045 49.73010 1.57726 2.420840 0.032737 1.45252 0.03274 1393600200046 52.65440 1.72236 2.446480 0.033274 1.45765 0.03327 1393600200047 55.63080 1.87480 2.496630 0.034691 1.45832 0.03469 1393600200048 58.69930 2.03699 2.465020 0.033218 1.47103 0.03322 1393600200049 61.88210 2.21043 2.422210 0.033233 1.44837 0.03323 1393600200050 65.16610 2.39484 2.500350 0.033859 1.47677 0.03386 1393600200051 68.47990 2.58648 2.452310 0.034659 1.47593 0.03466 1393600200052 72.00100 2.79627 2.515910 0.034211 1.47118 0.03421 1393600200053 75.52860 3.01261 2.480850 0.035996 1.47600 0.03600 1393600200054 79.03990 3.23399 2.516430 0.035394 1.47850 0.03539 1393600200055 82.86720 3.48208 2.542430 0.035305 1.49557 0.03531 1393600200056 86.74070 3.74025 2.525490 0.037611 1.51222 0.03761 1393600200057 90.61390 4.00559 2.522770 0.036146 1.48120 0.03615 1393600200058 94.78070 4.29888 2.567180 0.036595 1.50215 0.03660 1393600200059 98.86510 4.59429 2.582970 0.040142 1.50973 0.04014 1393600200060 102.9390 4.89665 2.576790 0.039445 1.50518 0.03945 1393600200061 107.2940 5.22825 2.569320 0.039030 1.53333 0.03903 1393600200062 111.9030 5.58845 2.582040 0.038123 1.51848 0.03812 1393600200063 116.8660 5.98725 2.581750 0.037684 1.53119 0.03768 1393600200064 121.6900 6.38530 2.628120 0.043131 1.53399 0.04313 1393600200065 126.3630 6.78080 2.613080 0.041745 1.54231 0.04174 1393600200066 131.4120 7.21920 2.580370 0.040062 1.51420 0.04006 1393600200067 136.7100 7.69125 2.622020 0.041227 1.52812 0.04123 1393600200068 142.4170 8.21340 2.580880 0.039196 1.53100 0.03920 1393600200069 148.4520 8.78135 2.633860 0.040267 1.54832 0.04027 1393600200070 154.8820 9.40370 2.629050 0.039283 1.54658 0.03928 1393600200071 161.8880 10.10220 2.594270 0.037847 1.53756 0.03785 1393600200072 168.5650 10.78795 2.602710 0.044275 1.55970 0.04427 1393600200073 174.8460 11.45055 2.690380 0.045836 1.58153 0.04584 1393600200074 181.5160 12.17295 2.677560 0.044884 1.56404 0.04488 1393600200075 188.7590 12.97900 2.695640 0.044110 1.54918 0.04411 1393600200076 196.3960 13.85355 2.683300 0.044176 1.57320 0.04418 1393600200077 ENDDATA 61 0 1393600200078 ENDSUBENT 77 0 1393600299999 SUBENT 13936003 20100525 13641393600300001 BIB 4 6 1393600300002 REACTION (92-U-238(N,F)0-NN-1,,KE) 1393600300003 ERR-ANALYS (DATA-ERR) Statistical and systematic uncertainties 1393600300004 are given together. 1393600300005 STATUS (TABLE) Data received by author in tables. 1393600300006 HISTORY (20091212A) Reaction corrected. 1393600300007 (20100525A) Reaction quantity updated. 1393600300008 ENDBIB 6 0 1393600300009 NOCOMMON 0 0 1393600300010 DATA 4 59 1393600300011 EN EN-ERR DATA DATA-ERR 1393600300012 MEV MEV MEV MEV 1393600300013 1.58577 0.00862 1.94034 0.14543 1393600300014 2.08913 0.01305 1.92244 0.14169 1393600300015 2.53457 0.01747 1.92900 0.17666 1393600300016 3.05136 0.02313 1.93881 0.12685 1393600300017 3.65418 0.03030 2.00060 0.12805 1393600300018 4.35097 0.03937 1.98973 0.15121 1393600300019 5.06410 0.04945 2.02760 0.16564 1393600300020 5.74700 0.05981 2.03865 0.16880 1393600300021 6.41433 0.07062 1.97080 0.18278 1393600300022 7.03439 0.08115 1.90790 0.15068 1393600300023 7.81227 0.09498 1.84185 0.14624 1393600300024 8.88002 0.11525 1.93299 0.11280 1393600300025 10.30310 0.14421 1.93808 0.13865 1393600300026 12.19500 0.18587 2.01249 0.11427 1393600300027 14.59380 0.24384 1.96387 0.12005 1393600300028 17.11050 0.31014 1.93121 0.10677 1393600300029 19.77880 0.38631 2.01379 0.11401 1393600300030 22.30190 0.46348 1.96150 0.14240 1393600300031 24.90790 0.54816 1.98536 0.10277 1393600300032 27.67720 0.64353 2.02479 0.10876 1393600300033 30.39030 0.74198 2.01958 0.11586 1393600300034 33.12460 0.84620 2.06393 0.13393 1393600300035 35.80970 0.95323 2.02778 0.16220 1393600300036 38.53100 1.06618 1.99907 0.16590 1393600300037 41.24180 1.18317 2.02451 0.10608 1393600300038 43.98470 1.30598 2.13580 0.13494 1393600300039 46.82620 1.43781 1.93167 0.09286 1393600300040 49.73010 1.57726 2.11356 0.14241 1393600300041 52.65440 1.72237 0.00000 0.00000 1393600300042 55.63080 1.87480 2.20508 0.13197 1393600300043 58.69930 2.03699 2.19281 0.13572 1393600300044 61.88210 2.21043 2.10962 0.14150 1393600300045 65.16610 2.39485 2.20136 0.15813 1393600300046 68.47990 2.58648 2.17030 0.12737 1393600300047 72.00100 2.79627 2.19774 0.12839 1393600300048 75.52860 3.01261 2.19045 0.18480 1393600300049 79.03990 3.23399 2.25542 0.16107 1393600300050 82.86720 3.48208 2.30740 0.14413 1393600300051 86.74070 3.74026 2.23088 0.17536 1393600300052 90.61390 4.00560 2.26359 0.13194 1393600300053 94.78070 4.29888 2.30889 0.13978 1393600300054 98.86510 4.59430 2.33423 0.15249 1393600300055 102.93900 4.89666 2.33774 0.18934 1393600300056 107.29400 5.22825 2.33990 0.17584 1393600300057 111.90300 5.58845 2.32735 0.19551 1393600300058 116.86600 5.98725 2.31491 0.14911 1393600300059 121.69000 6.38530 2.41757 0.19692 1393600300060 126.36300 6.78080 1.40465 0.02803 1393600300061 131.41200 7.21920 2.31599 0.19844 1393600300062 136.71001 7.69125 2.34879 0.17314 1393600300063 142.41701 8.21340 2.35603 0.16289 1393600300064 148.45200 8.78135 2.41006 0.22431 1393600300065 154.88200 9.40370 2.38603 0.14641 1393600300066 161.88800 10.10220 2.39277 0.16937 1393600300067 168.56500 10.78795 2.37253 0.18815 1393600300068 174.84599 11.45055 2.48606 0.19102 1393600300069 181.51601 12.17295 2.43213 0.20166 1393600300070 188.75900 12.97900 2.44047 0.18243 1393600300071 196.39600 13.85355 2.50677 0.18162 1393600300072 ENDDATA 61 0 1393600300073 ENDSUBENT 72 0 1393600399999 ENDENTRY 3 0 1393699999999