ENTRY 40296 20170203 41754029600000001 SUBENT 40296001 20170203 41754029600100001 BIB 10 56 4029600100002 TITLE Absolute measurement the of U-235 and U-238 fission 4029600100003 cross-sections in the Cf-252 fission neutron spectrum. 4029600100004 AUTHOR (V.M.Adamov,L.V.Drapchinskij,G.Yu.Kudryavtsev, 4029600100005 S.S.Kovalenko,K.A.Petrzhak,L.A.Pleskachevskij, 4029600100006 A.M.Sokolov) 4029600100007 REFERENCE (R,INDC(CCP)-180,1982) Final data. 4029600100008 English translation of RI-52 : 4029600100009 (R,RI-52,1976) Khlopin Radium Institute report. 4029600100010 (C,73KIEV,4,21,197305) Preliminary measurement data 4029600100011 INSTITUTE (4RUSRI) 4029600100012 INC-SOURCE (CF252) Spont.fiss.californium-252 . 4029600100013 Prepared by thermoscattering of Cf. 4029600100014 Diameter of Cf foil 3.0+-0.2 mm. 4029600100015 SAMPLE Prepared by high-frequency plasma spraying. U(3)O(8).4029600100016 Non-uniformity less 1%. 4029600100017 Weights were measured by alpha-activity in 2PI geometry4029600100018 in mesh ionization pulse chamber (U-238) and 4029600100019 semi-conductor detector in a small solid angle (U-235).4029600100020 Isotopic analysis was performed by alpha spectrometer. 4029600100021 ANALYSIS Fission cross-section is defined according to 4029600100022 the formula 4029600100023 SIGMAfis=(2PI*A*Nf*R**2)/(N0*P*NUCf*G*K*NCf) 4029600100024 here Nf- a number of fissions for uranium isotope, 4029600100025 N0- Avogadro number, 4029600100026 R- radius of the active foil target, 4029600100027 P- weight of the fissionable material in target, 4029600100028 NUCf- prompt neutron number for Cf-252 from 4029600100029 Second IAEA Panel Meeting on Neutron 4029600100030 Standard Reference Data, Vienna, 20-24 Nov. 4029600100031 1972. 4029600100032 NCf- a number of fissions for Cf-252, 4029600100033 G - geometry factor of experimental setup 4029600100034 K - coefficient of correction for counting errors4029600100035 in Cf-252 FF counting channel, 4029600100036 A - atomic weight of U isotope. 4029600100037 REL-REF (R,,,C,72VIENNA,,1972) 4029600100038 Second IAEA Panel Meeting on Neutron Standard Reference4029600100039 Data, Vienna, 20-24 Nov.1972, IIIC 3. 4029600100040 Reference for NU of Cf-252. 4029600100041 CORRECTION For neutron scattering - 3% . 4029600100042 For fission of impurities in target. 4029600100043 For finite dimensions of the source 4029600100044 HISTORY (19750521C) 4029600100045 (19861021A) Data assigned as preliminary by the 4029600100046 compiler's decision 4029600100047 (20130206A) M.M. Upper -> lower case correction. 4029600100048 Dates were corrected for 4-digits year. 4029600100049 Reference R,INDC(CCP)-180 was added. 4029600100050 BIB information were updated. 4029600100051 Preliminary data were replaced by final. 4029600100052 Detail ERR-ANALYS was added. 4029600100053 KT -> KT-DUMMY; 1.42 -> 1.406 MeV ( as on page 10 of 4029600100054 R,INDC(CCP)-180,1982). 4029600100055 (20170203A) M.M. Subents 002,003 were deleted - 4029600100056 duplicative data of Subents 40547.004, .006, 4029600100057 respectively. 4029600100058 ENDBIB 56 0 4029600100059 NOCOMMON 0 0 4029600100060 ENDSUBENT 59 0 4029600199999 NOSUBENT 40296002 20170203 41754029600200001 NOSUBENT 40296003 20170203 41754029600300001 ENDENTRY 3 0 4029699999999