ENTRY 41447 20111121 41554144700000001 SUBENT 41447001 20111121 41554144700100001 BIB 13 42 4144700100002 TITLE Spectra and Mean Energies in Neutron- Induced 238-U 4144700100003 Fission at Primary Energy En < 20 MeV. 4144700100004 AUTHOR (G.N.Lovchikova,A.M.Trufanov,M.I.Svirin,V.A.Vinogradov,4144700100005 A.V.Polyakov) 4144700100006 INSTITUTE (4RUSFEI) 4144700100007 REFERENCE (J,YF,67,(7),1270,200407) 4144700100008 (J,PAN,67,(7),1246,2004) Engl. translation of J,YF. 4144700100009 #doi:10.1134/1.1777281 4144700100010 FACILITY (ACCEL,4RUSFEI) EGP-10M Electrostatic Accelerator 4144700100011 (SPECC,4RUSFEI) Fast neutron spectrometer for energy 4144700100012 range 0.14 - 15. MeV. 4144700100013 METHOD (TOF) 4144700100014 INC-SOURCE (P-T) Gas tritium in steel cylinder of 10mm diameter, 4144700100015 40 mm length, 0.2 mm wall thickness, cooled by helium,4144700100016 covered by 58-ni of 0.1-0.3 mm thickness. 4144700100017 Proton energy 7.7 MeV and 8.5 MeV. 4144700100018 DETECTOR (MWDC) Four-sections ionization chamber, 4144700100019 methane (99.9%) as drift gas. 4144700100020 Fissions registration efficiency near 70%. 4144700100021 (SCIN) Paraterfenil crystal of 5cm diameter,5cm height,4144700100022 threshold energy near 100 keV, 4144700100023 absolute efficiency near 50%. 4144700100024 Detector's properties:time resolution near 2.5nsecond,4144700100025 neutron registration energy threshold near 80 keV, 4144700100026 protected by 10 cm lead. 4144700100027 (PROPC) All-waves counter for neutron beam monitoring, 4144700100028 3m from target and under 90 degrees angle. 4144700100029 SAMPLE In Three ionization chamber section - 238-U of 4144700100030 total weight 5.61 g. 4144700100031 In 4th section - Th-232. 4144700100032 MONITOR (98-CF-252(0,F),PR,NU/DE) 4144700100033 ERR-ANALYS (ERR-T) Experimental errors was defined mainly due 4144700100034 (ERR-S,1.5,25.) statistical accuracy of measuring 4144700100035 ( 1.5% to 25%) 4144700100036 HISTORY (20050414C) Compiled at the Center - CJD (M.M) 4144700100037 (20050422U) Last checking has been done. 4144700100038 (20060131R) Data were received for Subent 003. 4144700100039 (20060202A) Sub.003 was added (M.M.) 4144700100040 (20100225U) Ref. J,PAN was added. 4144700100041 TABLE was added in STATUS. BIB was corrected. 4144700100042 (20111214A) Subent 003 reaction was corrected. 4144700100043 COMMENT E-Mail: Svirin@ippe.Obninsk.Ru - M.I.Svirin 4144700100044 ENDBIB 42 0 4144700100045 NOCOMMON 0 0 4144700100046 ENDSUBENT 45 0 4144700199999 SUBENT 41447002 20111121 41554144700200001 BIB 2 2 4144700200002 REACTION (92-U-238(N,F)0-NN-1,PR,KE) 4144700200003 STATUS (TABLE) From text of J,YF,67,(7),1270,2004 (p.1274) 4144700200004 ENDBIB 2 0 4144700200005 NOCOMMON 0 0 4144700200006 DATA 3 2 4144700200007 EN DATA ERR-T 4144700200008 MEV MEV MEV 4144700200009 6. 1.99 0.03 4144700200010 7. 1.87 0.03 4144700200011 ENDDATA 4 0 4144700200012 ENDSUBENT 11 0 4144700299999 SUBENT 41447003 20111121 41554144700300001 BIB 4 12 4144700300002 REACTION ((92-U-238(N,F),PR,NU/DE,,NPD)/ 4144700300003 (98-CF-252(0,F),PR,NU/DE,,NPD)) 4144700300004 Experimental ratio of normalized to 1.0 neutron 4144700300005 spectra 4144700300006 EN-SEC (E,N) Energy of fission neutrons 4144700300007 STATUS (APRVD) Data received from author M.Svirin 20060131. 4144700300008 Data are on Fig.1 of J,YF,67,(7),1270,2004 4144700300009 (TABLE) 4144700300010 HISTORY (20111214A) 4144700300011 (92-U-238(N,F),PR,DE,N)/(98-CF-252(0,F),PR,DE,N) -> 4144700300012 (92-U-238(N,F),PR,NU/DE,,NPD)/ 4144700300013 (98-CF-252(0,F),PR,NU/DE,,NPD) 4144700300014 ENDBIB 12 0 4144700300015 NOCOMMON 0 0 4144700300016 DATA 4 82 4144700300017 EN E DATA ERR-T 4144700300018 MEV MEV NO-DIM PER-CENT 4144700300019 6. 0.13 1.151 5.3 4144700300020 6. 0.17 1.183 4.7 4144700300021 6. 0.2 1.153 4.3 4144700300022 6. 0.23 1.174 3.9 4144700300023 6. 0.28 1.194 3.5 4144700300024 6. 0.33 1.208 3.3 4144700300025 6. 0.39 1.176 3.2 4144700300026 6. 0.44 1.158 3.2 4144700300027 6. 0.49 1.205 3.1 4144700300028 6. 0.55 1.153 3.0 4144700300029 6. 0.61 1.120 3.0 4144700300030 6. 0.68 1.121 2.7 4144700300031 6. 0.76 1.082 2.4 4144700300032 6. 0.86 1.047 2.2 4144700300033 6. 0.96 1.028 2.1 4144700300034 6. 1.07 1.01 2.1 4144700300035 6. 1.20 1.016 2.1 4144700300036 6. 1.35 1.005 2.2 4144700300037 6. 1.51 1.003 2.2 4144700300038 6. 1.68 0.994 2.3 4144700300039 6. 1.88 0.958 2.4 4144700300040 6. 2.11 0.958 2.5 4144700300041 6. 2.36 0.966 2.6 4144700300042 6. 2.64 0.958 2.7 4144700300043 6. 2.95 0.949 2.9 4144700300044 6. 3.29 0.952 3.0 4144700300045 6. 3.66 0.891 3.2 4144700300046 6. 4.06 0.917 3.3 4144700300047 6. 4.53 0.894 3.5 4144700300048 6. 5.04 0.905 3.8 4144700300049 6. 5.58 0.887 4.0 4144700300050 6. 6.22 0.831 4.3 4144700300051 6. 6.97 0.834 4.5 4144700300052 6. 7.77 0.820 5.1 4144700300053 6. 8.6 0.811 5.5 4144700300054 6. 9.56 0.792 8.6 4144700300055 6. 10.72 0.756 9.6 4144700300056 6. 11.93 0.772 11.5 4144700300057 6. 13.77 0.698 11.5 4144700300058 7. 0.14 1.129 9.0 4144700300059 7. 0.16 1.199 8.8 4144700300060 7. 0.18 1.152 7.7 4144700300061 7. 0.21 1.226 6.3 4144700300062 7. 0.23 1.274 5.7 4144700300063 7. 0.26 1.215 5.1 4144700300064 7. 0.29 1.231 4.7 4144700300065 7. 0.33 1.231 4.2 4144700300066 7. 0.37 1.322 4.2 4144700300067 7. 0.41 1.352 3.9 4144700300068 7. 0.46 1.229 3.6 4144700300069 7. 0.52 1.308 3.4 4144700300070 7. 0.58 1.308 3.3 4144700300071 7. 0.65 1.335 3.2 4144700300072 7. 0.73 1.338 3.2 4144700300073 7. 0.82 1.268 3.1 4144700300074 7. 0.92 1.267 3.1 4144700300075 7. 1.03 1.170 2.8 4144700300076 7. 1.15 1.095 2.5 4144700300077 7. 1.29 1.033 2.4 4144700300078 7. 1.44 0.993 2.3 4144700300079 7. 1.61 0.939 2.4 4144700300080 7. 1.80 0.924 2.4 4144700300081 7. 2.01 0.901 2.5 4144700300082 7. 2.25 0.893 2.6 4144700300083 7. 2.52 0.853 2.7 4144700300084 7. 2.81 0.844 2.8 4144700300085 7. 3.14 0.866 3.0 4144700300086 7. 3.50 0.842 3.1 4144700300087 7. 3.89 0.808 3.3 4144700300088 7. 4.32 0.848 3.5 4144700300089 7. 4.81 0.823 3.7 4144700300090 7. 5.36 0.793 4.1 4144700300091 7. 5.93 0.828 4.4 4144700300092 7. 6.59 0.731 4.7 4144700300093 7. 7.37 0.764 5.1 4144700300094 7. 8.22 0.659 5.9 4144700300095 7. 9.10 0.694 9.2 4144700300096 7. 10.07 0.679 10. 4144700300097 7. 11.26 0.557 13. 4144700300098 7. 12.57 0.547 17. 4144700300099 7. 13.75 0.653 19. 4144700300100 7. 15.17 0.443 24. 4144700300101 ENDDATA 84 0 4144700300102 ENDSUBENT 101 0 4144700399999 ENDENTRY 3 0 4144799999999