ENTRY 40954 20180202 41784095400000001 SUBENT 40954001 20180202 41784095400100001 BIB 12 39 4095400100002 INSTITUTE (4RUSFEI) 4095400100003 REFERENCE (J,AE,63,60,1987) Issue 1. 4095400100004 (J,SJA,63,568,1987) Engl.transl.of J,AE,63,60,1987 4095400100005 AUTHOR (A.A.Goverdovskii,B.D.Kuz'minov,V.F.Mitrofanov, 4095400100006 A.I.Sergachev) 4095400100007 TITLE Measurement of the ratio of the fission cross-sections4095400100008 of 234U and 235U over the 0.2-1.0-MeV neutron energy 4095400100009 band 4095400100010 FACILITY (CCW,4RUSFEI) Electrostatic accelerator FEI KG-2.5 4095400100011 beam in the continuous mode 4095400100012 INC-SOURCE (P-T) Solid tritium-scandium target 0.8 mg/cm2 4095400100013 thickness 4095400100014 DETECTOR (FISCH) Double ionization chamber, registration 4095400100015 efficiency 98%, filled with methane at 1.3E+5 Pa 4095400100016 pressure . For fission fragments registration. 4095400100017 METHOD Irradiation by fast neutrons and by neutrons 4095400100018 thermalized in polyethylene block. 4095400100019 CORRECTION Corrections were made on 4095400100020 - the fragment's registration efficiency angular 4095400100021 dependence - 0.3 % , 4095400100022 - the neutron scattering in detector housing - 1% , 4095400100023 - the neutron scattering in neutron source housing - 4095400100024 up to 7%, 4095400100025 - admixture isotopes fission - < 0.1 % . 4095400100026 ERR-ANALYS (ERR-T) Total error 4095400100027 (ERR-S) Statistical error 4095400100028 (ERR-1,,2.) Max. exp.hall neutron background error 4095400100029 (ERR-2) Error due to the efficiency of fission 4095400100030 registration 4095400100031 (ERR-3) Error due to the ratio of U-235 nuclei to 4095400100032 the U-234 one in sample 4095400100033 (ERR-4,,1.) Error due to corrections, maximal 4095400100034 STATUS (APRVD) A.A.Goverdovskii, 1988-07 4095400100035 HISTORY (19880707C) Compiled at the CJD 4095400100036 (20010315A) Date is corrected 4095400100037 (20180202A) M.M. Upper -> lower case correction. 4095400100038 Ref.SJA,63,568,1987 was added. 4095400100039 BIB information was added . 4095400100040 ERR-ANALYS was corrected according now-day rules. 4095400100041 ENDBIB 39 0 4095400100042 COMMON 2 3 4095400100043 ERR-2 ERR-3 4095400100044 PER-CENT PER-CENT 4095400100045 .6 .4 4095400100046 ENDCOMMON 3 0 4095400100047 ENDSUBENT 46 0 4095400199999 SUBENT 40954002 20180202 41784095400200001 BIB 3 5 4095400200002 REACTION ((92-U-234(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4095400200003 SAMPLE Foils of uranium oxide, thickness 60 microgram/cm2, 4095400200004 Relative part of u-235 in u-234 layer is 0.067 - 4095400200005 determined by mass-spectrometer analysis. 4095400200006 STATUS (TABLE) Table 1 of SJA,63,568,1987 4095400200007 ENDBIB 5 0 4095400200008 NOCOMMON 0 0 4095400200009 DATA 5 22 4095400200010 EN EN-RSL DATA ERR-S ERR-T 4095400200011 KEV KEV NO-DIM PER-CENT PER-CENT 4095400200012 210. 35. .036 2.5 2.7 4095400200013 269. 35. .067 1.7 2.0 4095400200014 295. 30. .099 2.0 2.2 4095400200015 347. 29. .150 2.2 2.4 4095400200016 387. 29. .215 2.2 2.4 4095400200017 435. 28. .318 1.2 1.6 4095400200018 481. 28. .445 1.6 1.9 4095400200019 512. 28. .545 1.7 2.0 4095400200020 544. 27. .600 .9 1.3 4095400200021 586. 27. .671 1.0 1.4 4095400200022 627. 27. .681 .9 1.3 4095400200023 654. 27. .812 .7 1.2 4095400200024 700. 26. .939 .8 1.3 4095400200025 734. 26. 1.016 1.1 1.5 4095400200026 756. 26. 1.104 .4 1.1 4095400200027 777. 25. 1.128 .4 1.1 4095400200028 798. 25. 1.120 1.0 1.4 4095400200029 831. 25. 1.068 .8 1.3 4095400200030 863. 24. 1.015 .6 1.2 4095400200031 911. 24. .986 .6 1.2 4095400200032 954. 24. .894 1.0 1.4 4095400200033 997. 24. .920 1.1 1.5 4095400200034 ENDDATA 24 0 4095400200035 ENDSUBENT 34 0 4095400299999 ENDENTRY 2 0 4095499999999