ENTRY 14729 20220117 14951472900000001 SUBENT 14729001 20220117 14951472900100001 BIB 11 23 1472900100002 TITLE Fission neutron spectra of 25 and 49 1472900100003 AUTHOR (H.T.Richards,M.Fischer,I.H.Perlman,Pvt.L.Speck) 1472900100004 REFERENCE (R,LA-84,1944) 1472900100005 REL-REF (O,14727001,H.T.Richards+,R,LA-60,1944) Earlier result.1472900100006 (C,14738001,H.T.Richards+,R,LA-200,1945) Subsequent 1472900100007 analysis. 1472900100008 INSTITUTE (1USALAS) 1472900100009 FACILITY (ACCEL,1USALAS) The long electrostatic generator. 1472900100010 INC-SOURCE (P-LI7) All primary neutrons from the endothermic 1472900100011 Li7(p,n)Be7 were of energy 600 keV and after passing 1472900100012 through the paraffin sphere. These were partially 1472900100013 thermalized by 2.5 in. radius paraffin sphere around 1472900100014 the target. 1472900100015 DETECTOR (PLATE) Ilford Special Nalftone plates 160 microm 1472900100016 thick (without any glass backing). 1472900100017 METHOD (REC) Approximately 2500 recoil proton tracks 1472900100018 have been measured on the 235U and the 239Pu plates. 1472900100019 CORRECTION The background plates did show about 2% of the tracks 1472900100020 measured on the 235U and 239Pu plates. For any point 1472900100021 of the data this correction was less than the 1472900100022 indicated statistical error of the given point and 1472900100023 was zero for all points above 2.2 MeV. 1472900100024 HISTORY (20220117C) BP 1472900100025 ENDBIB 23 0 1472900100026 COMMON 1 3 1472900100027 EN-DUMMY 1472900100028 EV 1472900100029 0.0253 1472900100030 ENDCOMMON 3 0 1472900100031 ENDSUBENT 30 0 1472900199999 SUBENT 14729002 20220117 14951472900200001 BIB 3 4 1472900200002 REACTION (92-U-235(N,F),PR,NU/DE,,REL/SPA) Number of neutrons 1472900200003 in arbitrary units were reported. 1472900200004 ERR-ANALYS (ERR-S) Statistical fluctuations. 1472900200005 STATUS (CURVE) Fig. 2, page 7. 1472900200006 ENDBIB 4 0 1472900200007 NOCOMMON 0 0 1472900200008 DATA 3 18 1472900200009 E DATA ERR-S 1472900200010 MEV ARB-UNITS ARB-UNITS 1472900200011 1.031 313.346 18.375 1472900200012 1.426 374.275 23.211 1472900200013 1.821 416.828 26.112 1472900200014 2.235 415.861 29.014 1472900200015 2.615 260.155 26.112 1472900200016 3.017 170.213 22.244 1472900200017 3.410 130.561 20.309 1472900200018 3.812 71.567 16.441 1472900200019 4.207 92.843 16.441 1472900200020 4.599 35.783 8.704 1472900200021 5.004 76.402 18.375 1472900200022 5.387 49.323 19.342 1472900200023 5.800 20.309 10.638 1472900200024 6.204 20.309 10.638 1472900200025 6.597 2.901 1472900200026 6.992 27.079 15.474 1472900200027 7.385 9.671 8.704 1472900200028 7.799 2.901 1472900200029 ENDDATA 20 0 1472900200030 ENDSUBENT 29 0 1472900299999 SUBENT 14729003 20220117 14951472900300001 BIB 3 4 1472900300002 REACTION (94-PU-239(N,F),PR,NU/DE,,REL/SPA) Number of neutrons 1472900300003 in arbitrary units were reported. 1472900300004 ERR-ANALYS (ERR-S) Statistical fluctuations. 1472900300005 STATUS (CURVE) Fig. 4, page 9. 1472900300006 ENDBIB 4 0 1472900300007 NOCOMMON 0 0 1472900300008 DATA 3 22 1472900300009 E DATA ERR-S 1472900300010 MEV ARB-UNITS ARB-UNITS 1472900300011 1.036 382.758 24.132 1472900300012 1.440 324.896 21.718 1472900300013 1.832 308.066 26.550 1472900300014 2.224 253.822 22.929 1472900300015 2.615 201.992 24.134 1472900300016 3.021 205.682 24.140 1472900300017 3.399 126.091 16.901 1472900300018 3.802 75.470 16.892 1472900300019 4.208 81.573 15.692 1472900300020 4.600 49.054 16.890 1472900300021 4.981 49.118 15.692 1472900300022 5.373 15.392 8.450 1472900300023 5.780 43.219 18.101 1472900300024 6.173 20.355 10.862 1472900300025 6.578 10.768 6.028 1472900300026 6.984 24.113 10.854 1472900300027 7.352 4.865 1472900300028 7.783 3.731 1472900300029 8.164 5.002 1472900300030 8.520 3.856 1472900300031 8.582 3.866 1472900300032 8.963 8.758 1472900300033 ENDDATA 24 0 1472900300034 ENDSUBENT 33 0 1472900399999 SUBENT 14729004 20220117 14951472900400001 BIB 3 5 1472900400002 REACTION (92-U-235(N,F)0-NN-1,PR,KE,,SPA) 1472900400003 ERR-ANALYS (DATA-ERR) Probable error. 1472900400004 STATUS (DEP,14738003) 1472900400005 (DEP,14738004) 1472900400006 (TABLE) page 5 of R,LA-200,1945. 1472900400007 ENDBIB 5 0 1472900400008 NOCOMMON 0 0 1472900400009 DATA 2 1 1472900400010 DATA DATA-ERR 1472900400011 MEV MEV 1472900400012 2.27 0.1 1472900400013 ENDDATA 3 0 1472900400014 ENDSUBENT 13 0 1472900499999 ENDENTRY 4 0 1472999999999