ENTRY 40644 20150705 41694064400000001 SUBENT 40644001 20150705 41694064400100001 BIB 10 54 4064400100002 INSTITUTE (4RUSNIR) A.F.Semjonov = A.F.Semyonov 4064400100003 REFERENCE (R,NIIAR-1(360),197901) 4064400100004 (R,INDC(CCP)-164,1981) In English. 4064400100005 Translation of NIIAR P-22(356),1978 4064400100006 Measurement of prompt neutron spectra for U-233, U-2354064400100007 and Pu-239 thermal-neutron-induced fission in the 4064400100008 0.01-5. MeV energy region and for Cf-252 spontaneous 4064400100009 fission in the 0.01-10 MeV region. 4064400100010 ((C,77KIEV,3,205,1977)= 4064400100011 (R,INDC(CCP)-118,(3),205,1977)) INDC(CCP)-118-PART-III.4064400100012 First author V.N.Nefedov . 4064400100013 Prelim.results of relative spectra for Cf-252. 4064400100014 Also for Pu-239,U-233,-235 fission induced by thermal 4064400100015 neutrons. 4064400100016 (C,76PARIS,2,IV-1,1976) Prelim.data of Cf rel.spectrum.4064400100017 AUTHOR (B.I.Starostov,A.F.Semjonov,V.N.Nefedov) 4064400100018 TITLE About shape of prompt neutrons spectrum for Cf-252 4064400100019 spontaneous fission 4064400100020 METHOD (TOF) 4064400100021 Three cycles of measurements: 4064400100022 - Cf-252 layers of about 2.1*10**5 fis/sec activity on 4064400100023 gold backing of about 100 microg/cm**2 thickness, 4064400100024 registration efficiency for FF 95-97%, time 4064400100025 resolution 6 nsec. 4064400100026 - Cf-252 layers of about 2.5*10**5 fis/sec activity on 4064400100027 stainless steel backing of about 0.1 mm thickness, 4064400100028 registration efficiency for FF 97-99%. Time 4064400100029 resolution 5.5 nsec. 4064400100030 - Cf-252 layers of (1.2-5.5)*10**5 fis/sec activity on 4064400100031 stainless steel backings of 0.1-0.2 mm thickness, 4064400100032 registration efficiency for FF 97-99%. Time 4064400100033 resolution 2.5 nsec. 4064400100034 DETECTOR (SCIN) For FF. 4064400100035 (IOCH) Ionization chamber with U-235.For neutrons. 4064400100036 MONITOR (92-U-235(N,F),,SIG) 4064400100037 Neutron detectors efficiency was supposed to be 4064400100038 proportional to U-235 fission cross section. 4064400100039 PART-DET (N) 4064400100040 (FF) 4064400100041 ERR-ANALYS (DATA-ERR) Statistical error for 0.95 probability 4064400100042 level, relative error DELTA-N/N 4064400100043 (ERR-1) Neutron detector efficiency error about 3%. 4064400100044 HISTORY (19831124C) 4064400100045 (20111221A) Reaction was corrected in Subent 002 4064400100046 ,,DE,,REL -> ,PR,NU/DE,,NPD. 4064400100047 Units NO-DIM -> PER-CENT . 4064400100048 Article is not available for checking. 4064400100049 (20130923A) M.M. 4064400100050 Refs. R,INDC(CCP)-164,1981 and C,77KIEV,3,205,1977 were4064400100051 added. 4064400100052 BIB information was updated. 4064400100053 (20140707A) Ref. of 76PARIS was added. 4064400100054 Subent 003 was added. 4064400100055 (20150705A) Subent 002 was corrected. 4064400100056 ENDBIB 54 0 4064400100057 COMMON 1 3 4064400100058 ERR-1 4064400100059 PER-CENT 4064400100060 3. 4064400100061 ENDCOMMON 3 0 4064400100062 ENDSUBENT 61 0 4064400199999 SUBENT 40644002 20150705 41694064400200001 BIB 7 24 4064400200002 REACTION (98-CF-252(0,F),PR,NU/DE,,NPD) 4064400200003 Relative to the total number of neutrons 4064400200004 MONIT-REF (,G.V.Antsipov+,R,YK-20,(2),3,1975) 4064400200005 ANALYSIS Data of three cycles agree well with each other, 4064400200006 were average to define spectrum. 4064400200007 T was defined to be 1.43+-0.02 MeV, in 0.005-0.15 and 4064400200008 0.15-0.4 MeV regions the exp.spectra are higher than 4064400200009 Maxwellian of 20 and 5-5 % , respectively. 4064400200010 CORRECTION Corrections were made for background, recycling 4064400200011 neutrons and wall scattering. 4064400200012 For background of neutrons scattered in air and hall 4064400200013 (less 1.8%). 4064400200014 COMMENT Of authors. 4064400200015 In R,NIIAR-1(360),1979 there are final results of 4064400200016 Cf-252 neutron spectrum measurements in 0.01-10 MeV 4064400200017 region, obtained during 1974-1977 years, presented in 4064400200018 V.N.Nefedov+,C,77KIEV,3,205,1977 ; 4064400200019 V.N.Nefedov+, bul."Metrologiya neytronnogo izlucheniya4064400200020 na reaktorakh i uskoritelyakh",v.2, p.139,1974. 4064400200021 STATUS (TABLE) Table 1 of R,NIIAR-1(360),1979. 4064400200022 Prelim. data in Table 1 of R,INDC(CCP)-164,1981 = 4064400200023 English translation of NIIAR P-22(356),1978. 4064400200024 E and DATA values are the same, DATA-ERR values differ.4064400200025 HISTORY (20150705A) 1/FIS/MEV => 1/MEV 4064400200026 ENDBIB 24 0 4064400200027 NOCOMMON 0 0 4064400200028 DATA 3 79 4064400200029 E DATA DATA-ERR 4064400200030 KEV 1/MEV PER-CENT 4064400200031 1.4300E+01 8.5000E-02 1.2000E+01 4064400200032 2.1100E+01 1.0600E-01 1.1000E+01 4064400200033 3.3400E+01 1.2200E-01 8.0000E+00 4064400200034 3.6800E+01 1.3100E-01 7.0000E+00 4064400200035 4.3900E+01 1.4600E-01 6.2000E+00 4064400200036 4.9700E+01 1.6400E-01 5.6000E+00 4064400200037 5.6200E+01 1.7200E-01 3.9000E+00 4064400200038 6.5200E+01 1.7500E-01 4.1000E+00 4064400200039 7.2400E+01 2.0100E-01 3.8000E+00 4064400200040 8.0400E+01 2.1600E-01 2.9000E+00 4064400200041 8.4600E+01 2.1800E-01 1.8000E+00 4064400200042 8.8900E+01 2.2600E-01 2.1000E+00 4064400200043 9.3800E+01 2.3000E-01 2.3000E+00 4064400200044 9.8700E+01 2.3600E-01 2.7000E+00 4064400200045 1.0460E+02 2.4400E-01 3.1000E+00 4064400200046 1.1060E+02 2.5100E-01 2.5000E+00 4064400200047 1.1770E+02 2.5800E-01 1.8000E+00 4064400200048 1.2470E+02 2.5600E-01 1.6000E+00 4064400200049 1.3270E+02 2.5400E-01 1.7000E+00 4064400200050 1.4140E+02 2.5500E-01 1.4000E+00 4064400200051 1.5170E+02 2.5600E-01 1.6000E+00 4064400200052 1.6210E+02 2.5700E-01 9.0000E-01 4064400200053 1.7490E+02 2.6000E-01 1.0000E+00 4064400200054 1.8730E+02 2.6600E-01 1.5000E+00 4064400200055 2.0270E+02 2.7800E-01 1.9000E+00 4064400200056 2.0800E+02 2.8100E-01 1.7000E+00 4064400200057 2.2080E+02 2.8600E-01 1.3000E+00 4064400200058 2.2750E+02 2.8900E-01 1.5000E+00 4064400200059 2.4170E+02 2.9700E-01 1.3000E+00 4064400200060 2.5390E+02 3.0100E-01 1.1000E+00 4064400200061 2.7130E+02 3.0400E-01 1.2000E+00 4064400200062 2.8150E+02 3.0500E-01 1.2000E+00 4064400200063 3.0290E+02 3.1300E-01 1.3000E+00 4064400200064 3.2050E+02 3.1800E-01 1.2000E+00 4064400200065 3.5300E+02 3.1900E-01 1.2000E+00 4064400200066 3.9870E+02 3.2700E-01 1.0000E+00 4064400200067 4.3490E+02 3.2500E-01 1.5000E+00 4064400200068 4.8170E+02 3.3200E-01 1.1000E+00 4064400200069 5.2810E+02 3.3300E-01 1.0000E+00 4064400200070 6.0540E+02 3.3200E-01 1.1000E+00 4064400200071 6.8100E+02 3.3600E-01 1.1000E+00 4064400200072 7.8100E+02 3.3900E-01 1.8000E+00 4064400200073 9.0300E+02 3.3100E-01 1.1000E+00 4064400200074 1.0280E+03 3.2300E-01 1.1000E+00 4064400200075 1.1510E+03 3.1400E-01 1.1000E+00 4064400200076 1.2310E+03 3.0700E-01 3.1000E+00 4064400200077 1.2630E+03 3.1200E-01 2.8000E+00 4064400200078 1.2890E+03 3.0100E-01 2.0000E+00 4064400200079 1.3700E+03 2.8600E-01 2.0000E+00 4064400200080 1.4120E+03 2.8800E-01 2.0000E+00 4064400200081 1.4850E+03 2.9400E-01 1.7000E+00 4064400200082 1.5620E+03 2.8200E-01 2.0000E+00 4064400200083 1.6810E+03 2.6800E-01 1.9000E+00 4064400200084 1.7730E+03 2.6100E-01 1.9000E+00 4064400200085 1.8450E+03 2.4600E-01 1.6000E+00 4064400200086 1.9420E+03 2.2800E-01 1.7000E+00 4064400200087 2.0690E+03 2.2100E-01 1.7000E+00 4064400200088 2.1520E+03 2.1400E-01 1.6000E+00 4064400200089 2.2460E+03 2.0800E-01 1.7000E+00 4064400200090 2.3830E+03 2.0300E-01 1.7000E+00 4064400200091 2.5320E+03 1.9400E-01 2.5000E+00 4064400200092 2.6420E+03 1.8100E-01 3.0000E+00 4064400200093 2.8440E+03 1.5600E-01 4.3000E+00 4064400200094 3.0020E+03 1.3400E-01 4.0000E+00 4064400200095 3.1130E+03 1.3200E-01 3.0000E+00 4064400200096 3.4120E+03 1.1800E-01 3.0000E+00 4064400200097 3.5720E+03 1.0700E-01 2.5000E+00 4064400200098 3.7840E+03 9.4000E-02 2.5000E+00 4064400200099 4.2290E+03 7.7000E-02 3.5000E+00 4064400200100 4.4790E+03 7.1000E-02 4.2000E+00 4064400200101 4.5440E+03 6.6000E-02 4.0000E+00 4064400200102 5.4370E+03 4.1000E-02 4.0000E+00 4064400200103 5.6470E+03 3.8000E-02 4.0000E+00 4064400200104 5.8150E+03 3.4000E-02 4.0000E+00 4064400200105 6.7520E+03 1.4500E-02 3.9000E+00 4064400200106 7.3100E+03 7.0000E-03 3.8000E+00 4064400200107 7.9180E+03 5.4000E-03 4.5000E+00 4064400200108 9.1700E+03 1.2000E-03 6.6000E+00 4064400200109 1.0140E+04 8.2000E-04 1.2000E+01 4064400200110 ENDDATA 81 0 4064400200111 ENDSUBENT 110 0 4064400299999 SUBENT 40644003 20140707 41644064400300001 BIB 7 18 4064400300002 REACTION (98-CF-252(0,F),PR,NU/DE,,REL) 4064400300003 Relative spectrum in arbitrary units. 4064400300004 MONIT-REF (,J.Marion+,B,FAST N.PH.,2,712,1966) 4064400300005 Physics Fast Neutrons, vol.2, p.712, Moscow, 1966; 4064400300006 J.Marion, J.Fauler. 4064400300007 METHOD Data of measurement: flight paths 5,10,25,50 cm. 4064400300008 Two chambers: of 110 mm diameter on large flight paths,4064400300009 of 30 mm diameter on small paths. 4064400300010 CORRECTION Correction for fragment emission angular anisotropy as 4064400300011 a function of neutron energy was not used because it 4064400300012 was estimated to be < 5.% . 4064400300013 ADD-RES T=1.43+-0.03 MeV 4064400300014 STATUS (TABLE) Table 1 of C,76PARIS. 4064400300015 (PRELM) 4064400300016 (OUTDT,40644002) 4064400300017 (SPSDD,40644002) Superseded by spectrum normalized to 4064400300018 1. according to authors' comment in R,NIIAR . 4064400300019 HISTORY (20140707C) M.M. Subent was added. 4064400300020 ENDBIB 18 0 4064400300021 NOCOMMON 0 0 4064400300022 DATA 3 99 4064400300023 E DATA DATA-ERR 4064400300024 KEV ARB-UNITS ARB-UNITS 4064400300025 10. 0.458 0.068 4064400300026 12.5 0.513 0.073 4064400300027 15.7 0.790 0.038 4064400300028 20. 0.650 0.058 4064400300029 24. 0.716 0.054 4064400300030 28.2 0.831 0.052 4064400300031 31.7 0.840 0.054 4064400300032 34.8 0.862 0.067 4064400300033 38.6 0.721 0.095 4064400300034 43.2 0.776 0.095 4064400300035 48.5 0.858 0.095 4064400300036 55.1 0.835 0.067 4064400300037 62.3 0.752 0.048 4064400300038 68.4 0.837 0.022 4064400300039 72.2 0.899 0.011 4064400300040 75.5 0.950 0.011 4064400300041 79.4 0.930 0.033 4064400300042 83.9 0.939 0.033 4064400300043 88.1 0.980 0.017 4064400300044 93.2 0.971 0.027 4064400300045 98.8 0.993 0.012 4064400300046 104.4 1.037 0.054 4064400300047 111. 1.118 0.061 4064400300048 118.3 1.087 0.043 4064400300049 126. 1.072 0.022 4064400300050 134. 1.044 0.032 4064400300051 143.3 1.169 0.019 4064400300052 154. 1.088 0.047 4064400300053 162. 1.114 0.035 4064400300054 176.5 1.092 0.028 4064400300055 181. 1.106 0.032 4064400300056 191.2 1.174 0.018 4064400300057 194.7 1.216 0.043 4064400300058 209.4 1.261 0.031 4064400300059 227. 1.238 0.013 4064400300060 248. 1.270 0.032 4064400300061 271.5 1.309 0.025 4064400300062 291.6 1.254 0.019 4064400300063 304.3 1.142 0.031 4064400300064 320.5 1.142 0.031 4064400300065 338. 1.153 0.077 4064400300066 355. 1.215 0.041 4064400300067 376. 1.197 0.049 4064400300068 395. 1.143 0.051 4064400300069 419. 1.250 0.024 4064400300070 443.5 1.267 0.015 4064400300071 465. 1.207 0.024 4064400300072 472. 1.158 0.031 4064400300073 499. 1.274 0.054 4064400300074 527. 1.419 0.026 4064400300075 553. 1.372 0.039 4064400300076 581. 1.294 0.023 4064400300077 614. 1.269 0.021 4064400300078 650. 1.317 0.021 4064400300079 694. 1.343 0.033 4064400300080 732. 1.429 0.029 4064400300081 774. 1.389 0.028 4064400300082 823. 1.410 0.031 4064400300083 883. 1.401 0.026 4064400300084 907. 1.326 0.031 4064400300085 1009. 1.364 0.029 4064400300086 1043. 1.339 0.021 4064400300087 1082. 1.305 0.024 4064400300088 1132. 1.304 0.022 4064400300089 1161. 1.310 0.022 4064400300090 1211. 1.320 0.022 4064400300091 1263. 1.332 0.037 4064400300092 1289. 1.283 0.026 4064400300093 1370. 1.221 0.021 4064400300094 1412. 1.230 0.018 4064400300095 1485. 1.252 0.021 4064400300096 1562. 1.209 0.024 4064400300097 1681. 1.143 0.021 4064400300098 1773. 1.114 0.021 4064400300099 1845. 1.051 0.028 4064400300100 1942. 0.971 0.011 4064400300101 2069. 0.943 0.016 4064400300102 2152. 0.915 0.015 4064400300103 2246. 0.887 0.015 4064400300104 2383. 0.868 0.016 4064400300105 2532. 0.828 0.023 4064400300106 2642. 0.774 0.023 4064400300107 2844. 0.666 0.035 4064400300108 3002. 0.573 0.023 4064400300109 3113. 0.563 0.025 4064400300110 3412. 0.504 0.021 4064400300111 3572. 0.455 0.021 4064400300112 3784. 0.400 0.022 4064400300113 4229. 0.331 0.016 4064400300114 4479. 0.302 0.013 4064400300115 4544. 0.283 0.021 4064400300116 5437. 0.175 0.028 4064400300117 5647. 0.161 0.019 4064400300118 5815. 0.146 0.037 4064400300119 6752. 0.062 0.007 4064400300120 7310. 0.030 0.007 4064400300121 7918. 0.023 0.005 4064400300122 9171. 0.0051 0.0005 4064400300123 10140. 0.0035 0.0011 4064400300124 ENDDATA 101 0 4064400300125 ENDSUBENT 124 0 4064400399999 ENDENTRY 3 0 4064499999999