ENTRY 20996 20110727 22272099600000001 SUBENT 20996001 20110727 22272099600100001 BIB 14 49 2099600100002 TITLE -Fast neutron fission spectrum measurement of U-235 2099600100003 at 0.52 MeV incident neutron energy-. 2099600100004 AUTHOR (J.M.Adams,P.I.Johansson) 2099600100005 INSTITUTE (2UK HAR) J.M.Adams 2099600100006 (2SWDAE ) P.I.Johansson 2099600100007 REFERENCE (C,75WASH,2,631,197503) Reference for experimental 2099600100008 details. 2099600100009 (S,AERE-R-8636,197701) Reference for data. Source 2099600100010 article text seems to be absent in this reference 2099600100011 (P,UKNDC-P-71,22,197507) 2099600100012 FACILITY (VDG,2UK HAR) IBIS, the 3 MeV pulsed Van de Graaff at 2099600100013 Harwell. 2099600100014 INC-SOURCE (P-LI7) The Li-7(P,N)-reaction. 2099600100015 SAMPLE (92-U-235,96.5) Cylindrical U-235 sample, weight 214 2099600100016 gram and isotopically enriched to 96.5 percent U-235. 2099600100017 METHOD (TOF) Time of flight techniques, 3 meter flight 2099600100018 path. 2099600100019 (PSD) Pulse shape discrimination 2099600100020 DETECTOR (SCIN) Large NE213 organic scintillator with Am-bias 2099600100021 and pulse-shape discrimination. 2099600100022 .Energy calibration of the large NE213 scintillator 2099600100023 was determined by the B-10(D,N) and the B-11(D,N) 2099600100024 reactions. 2099600100025 .Small NE213 scintillator to monitor neutron flux. 2099600100026 (LONGC) Long counter to monitor neutron flux. 2099600100027 .Relative detector efficiency for the large NE213 2099600100028 scintillator was determined by N-P scattering from 2099600100029 a polyethylene scatterer. 2099600100030 .Detection angle for fission neutrons was 90 deg. 2099600100031 Relative to the incident neutron beam. 2099600100032 ANALYSIS .Fission neutron spectrum data were fitted to a 2099600100033 maxwellian and to a watt-spectrum,giving a maxwellian 2099600100034 temperature of 1.330 +- 0.009 MeV and watt parameters 2099600100035 a=(1.077 +- 0.012) and B=(2.949 +- 0.146) using the 2099600100036 watt distribution N(e)= K(exp(-ae)sinh(sqrt(be))). 2099600100037 STATUS .Data taken from both references. 2099600100038 CORRECTION .Data corrected for background and detector efficiency 2099600100039 response. 2099600100040 .Data also corrected for finite sample size by H. 2099600100041 Knitter (see reference AERE-R-8636). 2099600100042 ERR-ANALYS .Most important sources of error are the relative 2099600100043 detector efficiency and the detector energy calibra- 2099600100044 tion. No other information given. 2099600100045 HISTORY (19790809C) CN. 2099600100046 (19790827E) 2099600100047 (20110727A) Date is corrected to 8 digit format and 2099600100048 free text upper case converted to the low one. 2099600100049 BIB information corrected. REACTION codes in SAN 002,2099600100050 003 corrected 2099600100051 ENDBIB 49 0 2099600100052 COMMON 1 3 2099600100053 EN 2099600100054 MEV 2099600100055 5.2E-01 2099600100056 ENDCOMMON 3 0 2099600100057 ENDSUBENT 56 0 2099600199999 SUBENT 20996002 20110727 22272099600200001 BIB 4 8 2099600200002 REACTION 1(92-U-235(N,F)0-NN-1,PR,KE) Average kinetic energy 2099600200003 2(92-U-235(N,F)0-NN-1,PR,KE) Average kinetic energy 2099600200004 ANALYSIS 1. Maxwellian fit to data. 2099600200005 2. Watt fit to data. 2099600200006 STATUS (TABLE) .Data taken from text in ref. 75WASH,631,7503. 2099600200007 (DEP,20996003) 2099600200008 HISTORY (20110727A) Keyword FLAG changed to ANALYSIS and 2099600200009 POINTER format applied. STATUS keyword corrected 2099600200010 ENDBIB 8 0 2099600200011 NOCOMMON 0 0 2099600200012 DATA 4 1 2099600200013 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 2099600200014 MEV MEV MEV MEV 2099600200015 1.995 1.4E-02 2.028 3.8E-02 2099600200016 ENDDATA 3 0 2099600200017 ENDSUBENT 16 0 2099600299999 SUBENT 20996003 20110727 22272099600300001 BIB 4 8 2099600300002 REACTION (92-U-235(N,F),PR,NU/DE,,REL) Reference value not given2099600300003 MONITOR (92-U-235(N,F),PR,NU/DE,,REL) .Data normalized to the 2099600300004 initial value of 753. at 2.050 MeV neutron secondary 2099600300005 energy. 2099600300006 STATUS (TABLE) Data taken from Print-Out 3 in reference 2099600300007 AERE-R-8636, ordinal pages 143-145 2099600300008 HISTORY (20110727A) REACTION SF5 - SF7 codes changed to 2099600300009 PR,NU/DE,, STATUS keyword corrected 2099600300010 ENDBIB 8 0 2099600300011 COMMON 2 3 2099600300012 E-NRM MONIT 2099600300013 MEV ARB-UNITS 2099600300014 2.05 753. 2099600300015 ENDCOMMON 3 0 2099600300016 DATA 4 90 2099600300017 E E-RSL DATA DATA-ERR 2099600300018 MEV MEV ARB-UNITS ARB-UNITS 2099600300019 6.2500E-01 2.5000E-02 1.2103E+03 3.0670E+01 2099600300020 6.7500E-01 2.5000E-02 1.1899E+03 2.9310E+01 2099600300021 7.2500E-01 2.5000E-02 1.1682E+03 2.7840E+01 2099600300022 7.7500E-01 2.5000E-02 1.1483E+03 2.6150E+01 2099600300023 8.2500E-01 2.5000E-02 1.1422E+03 2.4400E+01 2099600300024 8.7500E-01 2.5000E-02 1.1374E+03 2.2510E+01 2099600300025 9.2500E-01 2.5000E-02 1.1322E+03 2.0220E+01 2099600300026 9.7500E-01 2.6000E-02 1.1025E+03 1.7390E+01 2099600300027 1.0250E+00 2.6000E-02 1.0737E+03 1.6140E+01 2099600300028 1.0750E+00 2.6000E-02 1.0575E+03 1.6440E+01 2099600300029 1.1250E+00 2.6000E-02 1.0456E+03 1.6830E+01 2099600300030 1.1750E+00 2.6000E-02 1.0344E+03 1.7050E+01 2099600300031 1.2250E+00 2.6000E-02 1.0241E+03 1.7180E+01 2099600300032 1.2750E+00 2.6000E-02 1.0070E+03 1.7530E+01 2099600300033 1.3250E+00 2.6000E-02 9.7957E+02 1.7660E+01 2099600300034 1.3750E+00 2.6000E-02 9.6678E+02 1.7710E+01 2099600300035 1.4250E+00 2.7000E-02 9.4508E+02 1.7570E+01 2099600300036 1.4750E+00 2.7000E-02 9.4218E+02 1.7960E+01 2099600300037 1.5250E+00 2.7000E-02 9.2732E+02 1.8160E+01 2099600300038 1.5750E+00 2.7000E-02 9.1081E+02 1.8420E+01 2099600300039 1.6250E+00 2.7000E-02 8.9181E+02 1.8440E+01 2099600300040 1.6750E+00 2.7000E-02 8.7751E+02 1.8320E+01 2099600300041 1.7250E+00 2.8000E-02 8.5211E+02 1.8090E+01 2099600300042 1.7750E+00 2.8000E-02 8.4656E+02 1.8520E+01 2099600300043 1.8250E+00 2.8000E-02 8.3528E+02 1.8670E+01 2099600300044 1.8750E+00 2.8000E-02 8.2370E+02 1.8510E+01 2099600300045 1.9250E+00 2.9000E-02 8.0637E+02 1.8770E+01 2099600300046 1.9750E+00 2.9000E-02 7.8415E+02 1.8570E+01 2099600300047 2.0500E+00 5.3000E-02 7.6832E+02 1.3290E+01 2099600300048 2.1500E+00 5.3000E-02 7.2670E+02 1.2990E+01 2099600300049 2.2500E+00 5.3000E-02 6.9857E+02 1.2870E+01 2099600300050 2.3490E+00 5.4000E-02 6.6744E+02 1.2700E+01 2099600300051 2.4500E+00 5.4000E-02 6.3579E+02 1.2470E+01 2099600300052 2.5490E+00 5.5000E-02 6.0860E+02 1.2230E+01 2099600300053 2.6490E+00 5.5000E-02 5.7350E+02 1.1910E+01 2099600300054 2.7500E+00 5.5000E-02 5.4518E+02 1.1600E+01 2099600300055 2.8490E+00 5.6000E-02 5.1286E+02 1.1090E+01 2099600300056 2.9490E+00 5.7000E-02 4.7834E+02 1.0620E+01 2099600300057 3.0490E+00 5.8000E-02 4.5374E+02 1.0510E+01 2099600300058 3.1500E+00 5.8000E-02 4.3463E+02 1.0350E+01 2099600300059 3.2500E+00 5.9000E-02 4.0693E+02 9.7200E+00 2099600300060 3.3490E+00 6.0000E-02 3.8450E+02 9.3300E+00 2099600300061 3.4490E+00 6.0000E-02 3.5764E+02 9.0200E+00 2099600300062 3.5500E+00 6.2000E-02 3.3317E+02 8.6200E+00 2099600300063 3.6490E+00 6.2000E-02 3.1191E+02 8.1400E+00 2099600300064 3.7500E+00 6.3000E-02 2.9341E+02 7.7300E+00 2099600300065 3.8490E+00 6.4000E-02 2.7643E+02 7.3900E+00 2099600300066 3.9490E+00 6.5000E-02 2.5990E+02 7.2200E+00 2099600300067 4.0500E+00 6.7000E-02 2.4314E+02 6.9300E+00 2099600300068 4.1500E+00 6.8000E-02 2.2521E+02 6.4200E+00 2099600300069 4.2490E+00 6.9000E-02 2.1104E+02 6.0000E+00 2099600300070 4.3480E+00 7.0000E-02 1.9864E+02 5.8700E+00 2099600300071 4.4500E+00 7.1000E-02 1.8576E+02 5.6300E+00 2099600300072 4.5490E+00 7.2000E-02 1.7288E+02 5.2500E+00 2099600300073 4.6500E+00 7.4000E-02 1.6400E+02 5.0300E+00 2099600300074 4.7470E+00 7.5000E-02 1.5221E+02 4.8500E+00 2099600300075 4.8500E+00 7.6000E-02 1.4155E+02 4.6900E+00 2099600300076 4.9500E+00 7.8000E-02 1.3231E+02 4.2400E+00 2099600300077 5.1210E+00 1.4000E-01 1.1729E+02 2.5800E+00 2099600300078 5.3700E+00 1.4200E-01 9.7190E+01 2.2190E+00 2099600300079 5.6210E+00 1.4500E-01 7.9386E+01 1.9280E+00 2099600300080 5.8720E+00 1.4700E-01 6.5366E+01 1.6690E+00 2099600300081 6.1190E+00 1.5000E-01 5.3640E+01 1.3960E+00 2099600300082 6.3690E+00 1.5300E-01 4.5110E+01 1.2490E+00 2099600300083 6.6230E+00 1.5600E-01 3.8197E+01 1.0980E+00 2099600300084 6.8680E+00 1.5900E-01 3.2228E+01 9.5100E-01 2099600300085 7.1210E+00 1.6300E-01 2.6172E+01 8.3500E-01 2099600300086 7.3720E+00 1.6700E-01 2.1947E+01 7.2900E-01 2099600300087 7.6190E+00 1.7100E-01 1.8794E+01 6.5600E-01 2099600300088 7.8720E+00 1.7500E-01 1.4825E+01 5.4200E-01 2099600300089 8.1200E+00 1.7900E-01 1.2173E+01 4.5100E-01 2099600300090 8.3700E+00 1.8300E-01 9.9700E+00 3.9600E-01 2099600300091 8.6170E+00 1.8800E-01 8.2640E+00 3.5900E-01 2099600300092 8.8730E+00 1.9300E-01 6.3950E+00 3.0100E-01 2099600300093 9.1250E+00 1.9800E-01 5.8270E+00 2.7900E-01 2099600300094 9.3660E+00 2.0300E-01 4.8180E+00 2.5300E-01 2099600300095 9.6210E+00 2.0800E-01 4.1920E+00 2.4200E-01 2099600300096 9.8730E+00 2.1300E-01 3.4730E+00 2.1700E-01 2099600300097 1.0237E+01 3.1000E-01 2.8190E+00 1.4800E-01 2099600300098 1.0730E+01 3.1900E-01 1.8840E+00 1.3200E-01 2099600300099 1.1251E+01 3.2800E-01 1.1850E+00 1.2100E-01 2099600300100 1.1714E+01 3.3700E-01 1.0000E+00 1.1900E-01 2099600300101 1.2212E+01 3.4800E-01 5.3700E-01 1.0300E-01 2099600300102 1.2749E+01 3.5800E-01 4.5100E-01 9.5000E-02 2099600300103 1.3291E+01 3.7200E-01 3.6900E-01 9.5000E-02 2099600300104 1.3690E+01 3.8300E-01 1.9400E-01 8.8000E-02 2099600300105 1.4244E+01 3.9400E-01 1.4000E-01 8.3000E-02 2099600300106 1.4823E+01 4.1300E-01 1.4000E-01 8.1000E-02 2099600300107 1.5225E+01 4.2000E-01 1.0800E-01 7.9000E-02 2099600300108 1.5629E+01 4.4200E-01 1.0700E-01 7.7000E-02 2099600300109 ENDDATA 92 0 2099600300110 ENDSUBENT 109 0 2099600399999 ENDENTRY 3 0 2099699999999