ENTRY 20018 20191116 22852001800000001 SUBENT 20018001 20191116 22852001800100001 BIB 16 43 2001800100002 TITLE Studies of the fission integrals of U-235 and 2001800100003 Pu-239 with cadmium and boron filters 2001800100004 AUTHOR (E.Hellstrand) 2001800100005 REFERENCE (R,AE-181,1965) 2001800100006 (P,EANDC(OR)-33,6,1964) abstract, values given. 2001800100007 (J,NUK,8,1,1966) - same data 2001800100008 INSTITUTE (2SWDAE ) 2001800100009 FACILITY (REAC,2SWDAE ) Swedish R1 reactor. 2001800100010 INC-SOURCE (REAC) Beam from carbon scatterer in central 2001800100011 position of R1 reactor. 2001800100012 INC-SPECT Spectrum measured with fast chopper. 2001800100013 Excess neutron temperature 22 degrees Celsius. 2001800100014 Westcott factor r = 0.0411 +- 0.0011. 2001800100015 METHOD Cadmium ratio of counts in filtered and unfiltered 2001800100016 beams. 2001800100017 DETECTOR (FISCH) Fission chamber 2001800100018 MONITOR (79-AU-197(N,G)79-AU-198,,RI) Capture integral 2001800100019 ASSUMED (ASSUM1,79-AU-197(N,G)79-AU-198,,SIG) 2200 m/sec 2001800100020 ANALYSIS Ratio of thermal and epithermal flux measured by 2001800100021 cadmium ratio of known standard (resonance integral 2001800100022 of gold). 2001800100023 Cadmium ratios and 2200 m/sec. Cross-sections from 2001800100024 samples and standard gave together with the spectrum 2001800100025 parameters the resonance integrals. 2001800100026 COMMENT A crude additional activation measurement on Pu-foils 2001800100027 gave results in agreement with the cadmium ratio 2001800100028 measurements. 2001800100029 Boron filter ratio measurements were done giving 2001800100030 'effective' resonance integrals in agreement with 2001800100031 calculations. 2001800100032 ERR-ANALYS (ERR-T) Main contribution to the limits of error for Th2001800100033 data originates from the uncertainty in the resonance 2001800100034 integral of gold. Other errors that have been 2001800100035 considered are uncertainties in the lethargy flux, in 2001800100036 the cadmium cut-off, in the cadmium ratios involved, 2001800100037 and in the other cross sections used 2001800100038 (ERR-1,,1.) Uncertainty of the neutron flux 2001800100039 STATUS (TABLE) Data from p.16 of AE-185 report. 2001800100040 HISTORY (19710524T) From NEUDADA file 2001800100041 (19801125A) reaction and monitor re-coded. 2001800100042 (20190114U) SD:Updated to new date formats,lower case. 2001800100043 Corrections in all Subents. 2001800100044 (20191116U) SD: Ref. NUK,8,1,1966 added. 2001800100045 ENDBIB 43 0 2001800100046 COMMON 4 3 2001800100047 EN-MIN MONIT MONIT-ERR ASSUM1 2001800100048 EV B B B 2001800100049 0.5 1550. 35. 98.4 2001800100050 ENDCOMMON 3 0 2001800100051 ENDSUBENT 50 0 2001800199999 SUBENT 20018002 20190114 22742001800200001 BIB 5 10 2001800200002 REACTION (92-U-235(N,F),,RI) Resonance integral. 2001800200003 .1/v part included, integral from 0.5 eV to 1. MeV. 2001800200004 SAMPLE The coating thickness was 79 mu-g/cm2 for the uranium 2001800200005 chamber. The isotopic concentration: 2001800200006 0.95% - U234, 93.3% - U235, 0.41% - U236, 5.34% - U2382001800200007 ASSUMED (ASSUM2,92-U-235(N,F),,SIG) 2200 m/sec value 2001800200008 STATUS (TABLE) Table in AE-181. 2001800200009 HISTORY (19801125A) REACTION and MONITOR re-coded. 2001800200010 (20190114U) SD: BIB updated. MONITOR, part of ASSUMED 2001800200011 moved to Subent 001. SAMPLE added. 2001800200012 ENDBIB 10 0 2001800200013 NOCOMMON 0 0 2001800200014 DATA 3 1 2001800200015 ASSUM2 DATA ERR-T 2001800200016 B B B 2001800200017 582.2 278. 9. 2001800200018 ENDDATA 3 0 2001800200019 ENDSUBENT 18 0 2001800299999 SUBENT 20018003 20190114 22742001800300001 BIB 4 9 2001800300002 REACTION (94-PU-239(N,F),,RI) Resonance integral. 2001800300003 .1/V part included, integral from 0.5 eV to 1. MeV. 2001800300004 SAMPLE The coating thickness was 140 mu-g/cm2 for the 2001800300005 plutonium chamber. The isotopic concentration: 2001800300006 95.2% - Pu239, 4.53% - Pu2403 0.25% - Pu24l 2001800300007 ASSUMED (ASSUM2,94-PU-239(N,F),,SIG) 2200 m/sec value 2001800300008 HISTORY (19801125A) REACTION and MONITOR re-coded. 2001800300009 (20190114U) SD: BIB updated. MONITOR, part of ASSUMED 2001800300010 moved to Subent 001. SAMPLE added. 2001800300011 ENDBIB 9 0 2001800300012 NOCOMMON 0 0 2001800300013 DATA 3 1 2001800300014 ASSUM2 DATA ERR-T 2001800300015 B B B 2001800300016 748.2 301. 10. 2001800300017 ENDDATA 3 0 2001800300018 ENDSUBENT 17 0 2001800399999 ENDENTRY 3 0 2001899999999