ENTRY 32244 20180115 31823224400000001 SUBENT 32244001 20180115 31823224400100001 BIB 14 33 3224400100002 TITLE Measuring neutron absorption cross section 3224400100003 AUTHOR (E.A.Pavlenko,N.L.Gnidak) 3224400100004 INSTITUTE (4UKRIJD) 3224400100005 REFERENCE (J,PTE,,(3),42,1977) 3224400100006 (J,IET,20,653,1977) English translation 3224400100007 FACILITY (REAC,4UKRIJD) Reactor WWR-M 3224400100008 METHOD (TRN) 3224400100009 The neutrons scattered by two samples located one 3224400100010 after another along the beam were registered, neutron 3224400100011 absorption by one of which (scatterer) is negligible. 3224400100012 The difference in the counting of the detector when 3224400100013 the position of the sample and the scatterer is 3224400100014 changed is proportional to the number of neutrons 3224400100015 absorbed by the sample under study. 3224400100016 The scatterer was a fluoroplastic. To select the effect3224400100017 due to thermal neutrons, a cadmium plate 1 mm thick was3224400100018 used. 3224400100019 DETECTOR (HE3SP) Assembly of proportional counters filled with 3224400100020 He-3, length 500 mm, width 150 mm. Geometry is close 3224400100021 to 4pi, the detector efficiency is about 95%. 3224400100022 CORRECTION Correction for multiple scattering, calculated by the 3224400100023 Monte Carlo method 3224400100024 ASSUMED (ASSUM,79-AU-197(N,G)79-AU-198,,SIG) Gold sample was 3224400100025 used as a reference, the cross section was taken from 3224400100026 REL-REF at an energy of 0.0253 eV 3224400100027 REL-REF (R,,S.Mughabghab+,R,INDC(USA)-58,(1),1973) 3224400100028 S.F. Mughabghab and D.I. Garber Neutron Cross Sections,3224400100029 Volume 1, Resonance Parameters, Third Edition,Jun 1973 3224400100030 SAMPLE Samples were selected thin - n * sigma less than 0.2, 3224400100031 diameter of the samples and the scatterer was 10 mm. 3224400100032 ERR-ANALYS (DATA-ERR) Not specified. 3224400100033 STATUS (TABLE) On page 43 of J,PTE,,(3),42,1977. 3224400100034 HISTORY (20180115C) UKRNDC 3224400100035 ENDBIB 33 0 3224400100036 COMMON 3 3 3224400100037 EN-DUMMY ASSUM ASSUM-ERR 3224400100038 EV B B 3224400100039 0.0253 98.8 0.3 3224400100040 ENDCOMMON 3 0 3224400100041 ENDSUBENT 40 0 3224400199999 SUBENT 32244002 20180115 31823224400200001 BIB 1 1 3224400200002 REACTION (23-V-0(N,ABS),,SIG,,SPA) 3224400200003 ENDBIB 1 0 3224400200004 NOCOMMON 0 0 3224400200005 DATA 2 1 3224400200006 DATA DATA-ERR 3224400200007 B B 3224400200008 5.03 0.13 3224400200009 ENDDATA 3 0 3224400200010 ENDSUBENT 9 0 3224400299999 SUBENT 32244003 20180115 31823224400300001 BIB 1 1 3224400300002 REACTION (28-NI-0(N,ABS),,SIG,,SPA) 3224400300003 ENDBIB 1 0 3224400300004 NOCOMMON 0 0 3224400300005 DATA 2 1 3224400300006 DATA DATA-ERR 3224400300007 B B 3224400300008 4.47 0.35 3224400300009 ENDDATA 3 0 3224400300010 ENDSUBENT 9 0 3224400399999 SUBENT 32244004 20180115 31823224400400001 BIB 1 1 3224400400002 REACTION (21-SC-45(N,ABS),,SIG,,SPA) 3224400400003 ENDBIB 1 0 3224400400004 NOCOMMON 0 0 3224400400005 DATA 2 1 3224400400006 DATA DATA-ERR 3224400400007 B B 3224400400008 28.2 1.0 3224400400009 ENDDATA 3 0 3224400400010 ENDSUBENT 9 0 3224400499999 SUBENT 32244005 20180115 31823224400500001 BIB 1 1 3224400500002 REACTION (70-YB-0(N,ABS),,SIG,,SPA) 3224400500003 ENDBIB 1 0 3224400500004 NOCOMMON 0 0 3224400500005 DATA 2 1 3224400500006 DATA DATA-ERR 3224400500007 B B 3224400500008 35.5 1.4 3224400500009 ENDDATA 3 0 3224400500010 ENDSUBENT 9 0 3224400599999 ENDENTRY 5 0 3224499999999