ENTRY 40321 20161128 41754032100000001 SUBENT 40321001 20161128 41754032100100001 BIB 12 31 4032100100002 INSTITUTE (4RUSFEI) 4032100100003 REFERENCE (J,SJA,38,49,1975) Eng.transl.of AE,38,43,1975 4032100100004 (J,AE,38,(1),43,197501) Data are given 4032100100005 AUTHOR (V.G.Dvukhsherstnov,V.L.Petrov,V.M.Furmanov) 4032100100006 TITLE Measurements of SIGf(239Pu)/SIGf(235U) and 4032100100007 SIGf(233U)/SIGf(235U) fission ratios at 2 keV . 4032100100008 FACILITY (REAC,4RUSFEI) 4032100100009 INC-SOURCE (REAC) Reactor. 2.0 keV energy neutron beam was 4032100100010 obtained by transmission of reactor neutron spectrum 4032100100011 through scandium filter 4032100100012 METHOD Direct measurements. 4032100100013 DETECTOR (FISCH) Double fission chamber. Each chamber 4032100100014 (239pu/235U and 233U/235U) had five aluminum-foil 4032100100015 electrodes ~0.1 mm thick on two of which a layer of 4032100100016 fissile material was deposited on both sides in the 4032100100017 form of a spot 14 x 9 mm in size. 4032100100018 STATUS (TABLE) Table 1 of AE,38,(1),43,1975 4032100100019 CORRECTION For 1.5-2.3 keV energy interval correction on 4032100100020 nonmonoenergetic spectrum of scandium neutron beam 4032100100021 were introduced 4032100100022 ERR-ANALYS (DATA-ERR) Mean-squared error consists of 4032100100023 statistical measurement error, uncertainties of 4032100100024 calculated normalization constants and corrections 4032100100025 HISTORY (19760206C) Compiled at the centre 4032100100026 (20150210U) SD: Updated to new date formats,lower case.4032100100027 Corrections according last EXFOR rules and Dict. 4032100100028 Ref. on Engl.transl. of AE added. SAMPLE added to 4032100100029 Subents 2,3. 4032100100030 (20161128A) M.M. Article was checked, BIB information 4032100100031 was updated in TITLE,STATUS. Data for 1.5-2.3 keV were 4032100100032 moved in new Subents 004,005. 4032100100033 ENDBIB 31 0 4032100100034 NOCOMMON 0 0 4032100100035 ENDSUBENT 34 0 4032100199999 SUBENT 40321002 20161128 41754032100200001 BIB 5 10 4032100200002 REACTION ((94-PU-239(N,F),,SIG,,SPA)/ 4032100200003 (92-U-235(N,F),,SIG,,SPA)) 4032100200004 SAMPLE Fissile material in a single chamber was ~3 mg: 4032100200005 1 mg of 239Pu dioxide (~99.8%) 4032100200006 INC-SPECT "Signal" spectrum of Sc beam - average energy 2 keV. 4032100200007 METHOD Calibration measurements with the double fis.chambers 4032100200008 were made in the neutron beam from a crystal 4032100200009 monochromator - energy 0.053 eV ( 0.051-0.056 eV) ; 4032100200010 results were normalized to value of ratio 1.65+-0.03 . 4032100200011 HISTORY (20161128A) M.M. SPA was added in REACTIONs. 4032100200012 ENDBIB 10 0 4032100200013 NOCOMMON 0 0 4032100200014 DATA 3 1 4032100200015 EN-MEAN DATA DATA-ERR 4032100200016 KEV NO-DIM NO-DIM 4032100200017 2. 5.7800E-01 1.4000E-02 4032100200018 ENDDATA 3 0 4032100200019 ENDSUBENT 18 0 4032100299999 SUBENT 40321003 20161128 41754032100300001 BIB 5 11 4032100300002 REACTION ((92-U-233(N,F),,SIG,,SPA)/ 4032100300003 (92-U-235(N,F),,SIG,,SPA)) 4032100300004 SAMPLE Fissile material in a single chamber was ~3 mg: 4032100300005 1 mg of uranous-uranic oxides of 233U (~99.9%) and 4032100300006 2 mg of uranous-uranic oxides of 233U (~90%). 4032100300007 INC-SPECT "Signal" spectrum of Sc beam - average energy 2 keV. 4032100300008 METHOD Calibration measurements with the double fis.chambers 4032100300009 were made in the neutron beam from a crystal 4032100300010 monochromator - energy 0.053 eV ( 0.051-0.056 eV) ; 4032100300011 results were normalized to value of ratio 0.96+-0.02 . 4032100300012 HISTORY (20161128A) M.M. SPA was added in REACTIONs. 4032100300013 ENDBIB 11 0 4032100300014 NOCOMMON 0 0 4032100300015 DATA 3 1 4032100300016 EN-MEAN DATA DATA-ERR 4032100300017 KEV NO-DIM NO-DIM 4032100300018 2. 1.41 0.04 4032100300019 ENDDATA 3 0 4032100300020 ENDSUBENT 19 0 4032100399999 SUBENT 40321004 20161128 41754032100400001 BIB 4 8 4032100400002 REACTION ((94-PU-239(N,F),,SIG)/ 4032100400003 (92-U-235(N,F),,SIG)) 4032100400004 CORRECTION For 1.5-2.3 keV energy interval correction on 4032100400005 nonmonoenergetic spectrum of scandium neutron beam 4032100400006 were introduced 4032100400007 STATUS (DEP,40321002) Directly measured value at Sc filter 4032100400008 beam 4032100400009 HISTORY (20161128C) M.M. Subent was added. 4032100400010 ENDBIB 8 0 4032100400011 NOCOMMON 0 0 4032100400012 DATA 4 1 4032100400013 EN-MIN EN-MAX DATA DATA-ERR 4032100400014 KEV KEV NO-DIM NO-DIM 4032100400015 1.5 2.3 0.562 0.015 4032100400016 ENDDATA 3 0 4032100400017 ENDSUBENT 16 0 4032100499999 SUBENT 40321005 20161128 41754032100500001 BIB 4 8 4032100500002 REACTION ((92-U-233(N,F),,SIG)/ 4032100500003 (92-U-235(N,F),,SIG)) 4032100500004 CORRECTION For 1.5-2.3 keV energy interval correction on 4032100500005 nonmonoenergetic spectrum of scandium neutron beam 4032100500006 were introduced 4032100500007 STATUS (DEP,40321003) Directly measured value at Sc filter 4032100500008 beam 4032100500009 HISTORY (20161128C) M.M. Subent was added. 4032100500010 ENDBIB 8 0 4032100500011 NOCOMMON 0 0 4032100500012 DATA 4 1 4032100500013 EN-MIN EN-MAX DATA DATA-ERR 4032100500014 KEV KEV NO-DIM NO-DIM 4032100500015 1.5 2.3 1.41 0.04 4032100500016 ENDDATA 3 0 4032100500017 ENDSUBENT 16 0 4032100599999 ENDENTRY 5 0 4032199999999