ENTRY 14393 20160315 14161439300000001 SUBENT 14393001 20160315 14161439300100001 BIB 8 11 1439300100002 TITLE The ORNL Fast-Chopper Time-of-Flight Neutron 1439300100003 Spectrometer 1439300100004 AUTHOR (R.Block,G.Slaughter,N.Pattenden,J.Harvey) 1439300100005 REFERENCE (C,60VIENNA,535,1960) 1439300100006 INSTITUTE (1USAORL) 1439300100007 FACILITY (CHOPF,1USAORL) 1439300100008 PART-DET (N,G) 1439300100009 DETECTOR (BF3,SCIN,HORBU) 1-in BF3 chambers, 0.75-m diameter 1439300100010 liquid scintillation tank. 1439300100011 HISTORY (20140603C) BP 1439300100012 (20160315A) OS. SF9=DERIV added in subs.2 and 3. 1439300100013 ENDBIB 11 0 1439300100014 NOCOMMON 0 0 1439300100015 ENDSUBENT 14 0 1439300199999 SUBENT 14393002 20160315 14161439300200001 BIB 7 19 1439300200002 REACTION (5-B-10(N,TOT),,SIG,,,DERIV) 1439300200003 METHOD (TOF) This installation has an overall flight path of 1439300200004 180 m long with intermediate detector stations at 1439300200005 approximately 12, 25, and 45 m. The neutrons are 1439300200006 detected at the end of flight path by BF3 1439300200007 proportional counters. In this measurement six 10BF3 1439300200008 proportional counters were located at the 12- or 45-m 1439300200009 flight stations. 1439300200010 INC-SOURCE (REAC) 1439300200011 ANALYSIS In order to determine the 2200 m/sec cross sections 1439300200012 for these nuclides the experimental data were fitted 1439300200013 by the least-squares method to the following 1439300200014 equation: [sigma(total) - sigma(sc)] = a/sqrt(E) + b, 1439300200015 where sigma(total), sigma(sc) are respectively the 1439300200016 total and scattering cross sections, E is the neutron 1439300200017 energy, and a and b are the coefficients of fit. 1439300200018 ERR-ANALYS (DATA-ERR) No information on source of uncertainties. 1439300200019 STATUS (TABLE) page 543. 1439300200020 HISTORY (20160315A) Added DERIV to SF9 1439300200021 ENDBIB 19 0 1439300200022 NOCOMMON 0 0 1439300200023 DATA 3 1 1439300200024 EN DATA DATA-ERR 1439300200025 EV B B 1439300200026 0.0253 3.850E+3 4.000E+1 1439300200027 ENDDATA 3 0 1439300200028 ENDSUBENT 27 0 1439300299999 SUBENT 14393003 20160315 14161439300300001 BIB 7 20 1439300300002 REACTION (62-SM-151(N,TOT),,SIG,,,DERIV) 1439300300003 METHOD (TOF) This installation has an overall flight path of 1439300300004 180 m long with intermediate detector stations at 1439300300005 approximately 12, 25, and 45 m. The neutrons are 1439300300006 detected at the end of flight path by BF3 1439300300007 proportional counters. In this measurement six 10BF3 1439300300008 proportional counters were located at the 12- or 45-m 1439300300009 flight stations. 1439300300010 INC-SOURCE (REAC) 1439300300011 ANALYSIS In order to determine the 2200 m/sec cross sections 1439300300012 for these nuclides the experimental data were fitted 1439300300013 by the least-squares method to the following 1439300300014 equation: [sigma(total) - sigma(sc)] = a/sqrt(E) + b, 1439300300015 where sigma(total), sigma(sc) are respectively the 1439300300016 total and scattering cross sections, E is the neutron 1439300300017 energy, and a and b are the coefficients of fit. 1439300300018 ERR-ANALYS (DATA-ERR) No information on source of uncertainties. 1439300300019 STATUS (TABLE) page 543. 1439300300020 (COREL,12025007) Similar result by same group 1439300300021 HISTORY (20160315A) Added DERIV to SF9 1439300300022 ENDBIB 20 0 1439300300023 NOCOMMON 0 0 1439300300024 DATA 3 1 1439300300025 EN DATA DATA-ERR 1439300300026 EV B B 1439300300027 0.0253 1.540E+4 1.500E+3 1439300300028 ENDDATA 3 0 1439300300029 ENDSUBENT 28 0 1439300399999 SUBENT 14393004 20140603 14001439300400001 BIB 6 7 1439300400002 REACTION (49-IN-0(N,G),,SIG) 1439300400003 INC-SOURCE (P-LI7) 1439300400004 SAMPLE Target thickness 1.2 x 10**22 atoms/cm2. 1439300400005 METHOD Thin lithium neutron production target. 1439300400006 MONITOR (92-U-235(N,G)92-U-236,,SIG) Authors did not provide 1439300400007 any details. 1439300400008 STATUS (CURVE) Fig. 8, page 544. 1439300400009 ENDBIB 7 0 1439300400010 NOCOMMON 0 0 1439300400011 DATA 2 17 1439300400012 EN DATA 1439300400013 KEV MB 1439300400014 5.133E+01 6.572E+02 1439300400015 6.159E+01 5.746E+02 1439300400016 6.419E+01 5.420E+02 1439300400017 7.150E+01 5.067E+02 1439300400018 8.233E+01 4.658E+02 1439300400019 9.558E+01 4.142E+02 1439300400020 1.128E+02 3.652E+02 1439300400021 1.289E+02 3.619E+02 1439300400022 1.436E+02 3.384E+02 1439300400023 1.534E+02 3.272E+02 1439300400024 1.638E+02 2.839E+02 1439300400025 1.796E+02 2.982E+02 1439300400026 1.934E+02 2.609E+02 1439300400027 2.033E+02 2.481E+02 1439300400028 2.302E+02 2.339E+02 1439300400029 2.587E+02 2.280E+02 1439300400030 3.080E+02 2.131E+02 1439300400031 ENDDATA 19 0 1439300400032 ENDSUBENT 31 0 1439300499999 SUBENT 14393005 20140603 14001439300500001 BIB 5 5 1439300500002 REACTION (49-IN-0(N,G),,SIG) 1439300500003 INC-SOURCE (P-T) 1439300500004 SAMPLE Target thickness 1.2 x 10**22 atoms/cm2. 1439300500005 METHOD T(p,n) runs. 1439300500006 STATUS (CURVE) Fig. 8, page 544. 1439300500007 ENDBIB 5 0 1439300500008 NOCOMMON 0 0 1439300500009 DATA 2 23 1439300500010 EN DATA 1439300500011 KEV MB 1439300500012 2.555E+01 9.208E+02 1439300500013 3.305E+01 7.719E+02 1439300500014 3.501E+01 7.219E+02 1439300500015 3.711E+01 7.039E+02 1439300500016 3.900E+01 6.806E+02 1439300500017 4.308E+01 6.155E+02 1439300500018 4.606E+01 6.468E+02 1439300500019 5.129E+01 5.898E+02 1439300500020 5.390E+01 5.609E+02 1439300500021 7.207E+01 4.740E+02 1439300500022 7.638E+01 4.583E+02 1439300500023 8.229E+01 4.322E+02 1439300500024 8.868E+01 4.214E+02 1439300500025 9.552E+01 3.748E+02 1439300500026 1.064E+02 3.715E+02 1439300500027 1.166E+02 3.474E+02 1439300500028 1.267E+02 3.386E+02 1439300500029 1.376E+02 3.088E+02 1439300500030 1.508E+02 3.061E+02 1439300500031 1.585E+02 3.035E+02 1439300500032 1.693E+02 2.722E+02 1439300500033 1.794E+02 2.546E+02 1439300500034 1.917E+02 2.303E+02 1439300500035 ENDDATA 25 0 1439300500036 ENDSUBENT 35 0 1439300599999 SUBENT 14393006 20140603 14001439300600001 BIB 6 7 1439300600002 REACTION (49-IN-0(N,G),,SIG) 1439300600003 REL-REF (O,11935007,R.C.Block+,C,61SACLAY,,203,1961) 1439300600004 Similar experiment by same group (up to 8 keV) 1439300600005 INC-SOURCE (P-LI7) 1439300600006 SAMPLE Target thickness 1.2 x 10**22 atoms/cm2. 1439300600007 METHOD Li(p,n) runs. 1439300600008 STATUS (CURVE) Fig. 8, page 544. 1439300600009 ENDBIB 7 0 1439300600010 NOCOMMON 0 0 1439300600011 DATA 2 45 1439300600012 EN DATA 1439300600013 KEV MB 1439300600014 7.479E+00 1.675E+03 1439300600015 7.990E+00 1.541E+03 1439300600016 8.263E+00 1.593E+03 1439300600017 8.614E+00 1.592E+03 1439300600018 8.980E+00 1.605E+03 1439300600019 9.360E+00 1.539E+03 1439300600020 9.838E+00 1.501E+03 1439300600021 1.034E+01 1.416E+03 1439300600022 1.105E+01 1.512E+03 1439300600023 1.222E+01 1.576E+03 1439300600024 1.327E+01 1.413E+03 1439300600025 1.430E+01 1.300E+03 1439300600026 1.503E+01 1.310E+03 1439300600027 1.554E+01 1.278E+03 1439300600028 1.660E+01 1.236E+03 1439300600029 1.688E+01 1.267E+03 1439300600030 1.897E+01 1.204E+03 1439300600031 1.928E+01 1.136E+03 1439300600032 2.184E+01 1.107E+03 1439300600033 2.373E+01 1.044E+03 1439300600034 2.580E+01 1.143E+03 1439300600035 2.665E+01 9.597E+02 1439300600036 2.825E+01 9.837E+02 1439300600037 2.993E+01 8.824E+02 1439300600038 3.067E+01 8.324E+02 1439300600039 3.278E+01 8.183E+02 1439300600040 3.307E+01 8.819E+02 1439300600041 3.390E+01 8.388E+02 1439300600042 3.503E+01 7.781E+02 1439300600043 3.652E+01 7.844E+02 1439300600044 3.743E+01 7.399E+02 1439300600045 4.000E+01 7.036E+02 1439300600046 4.205E+01 7.092E+02 1439300600047 4.419E+01 6.745E+02 1439300600048 4.683E+01 6.467E+02 1439300600049 5.004E+01 6.048E+02 1439300600050 5.667E+01 5.654E+02 1439300600051 5.808E+01 5.378E+02 1439300600052 6.057E+01 5.605E+02 1439300600053 6.105E+01 5.244E+02 1439300600054 6.312E+01 5.331E+02 1439300600055 6.362E+01 4.905E+02 1439300600056 6.746E+01 5.111E+02 1439300600057 1.532E+02 2.635E+02 1439300600058 2.049E+02 2.264E+02 1439300600059 ENDDATA 47 0 1439300600060 ENDSUBENT 59 0 1439300699999 SUBENT 14393007 20140603 14001439300700001 BIB 5 5 1439300700002 REACTION (49-IN-0(N,G),,SIG) 1439300700003 METHOD (SHELT) Spherical shell. 1439300700004 INC-SOURCE (REAC) 1439300700005 ERR-ANALYS (DATA-ERR) No information on source of uncertainties. 1439300700006 STATUS (CURVE) Fig. 8, page 544. 1439300700007 ENDBIB 5 0 1439300700008 NOCOMMON 0 0 1439300700009 DATA 3 2 1439300700010 EN DATA DATA-ERR 1439300700011 KEV MB MB 1439300700012 2.512E+01 8.264E+02 5.964E+01 1439300700013 4.606E+01 6.468E+02 1439300700014 ENDDATA 4 0 1439300700015 ENDSUBENT 14 0 1439300799999 SUBENT 14393008 20140603 14001439300800001 BIB 6 10 1439300800002 REACTION (49-IN-0(N,G),,SIG) 1439300800003 REL-REF (O,11935007,R.C.Block+,C,61SACLAY,,203,1961) 1439300800004 Similar result by same group 1439300800005 METHOD (TOF) Fast chopper 1.95 x 10**21 atoms/cm2. 1439300800006 INC-SOURCE (REAC) 1439300800007 ERR-ANALYS (DATA-ERR,20.,25.) 1439300800008 Authors say, in general, though, 1439300800009 these chopper data are to be regarded as preliminary 1439300800010 and good to ~20-25%. 1439300800011 STATUS (CURVE) Fig. 8, page 544. 1439300800012 ENDBIB 10 0 1439300800013 NOCOMMON 0 0 1439300800014 DATA 2 18 1439300800015 EN DATA 1439300800016 KEV MB 1439300800017 2.657E-01 8.523E+03 1439300800018 2.937E-01 9.030E+03 1439300800019 3.320E-01 5.950E+03 1439300800020 3.699E-01 5.704E+03 1439300800021 4.094E-01 7.380E+03 1439300800022 4.632E-01 5.988E+03 1439300800023 5.328E-01 4.546E+03 1439300800024 6.290E-01 4.144E+03 1439300800025 7.294E-01 3.093E+03 1439300800026 8.560E-01 4.171E+03 1439300800027 1.019E+00 3.616E+03 1439300800028 1.284E+00 2.721E+03 1439300800029 1.580E+00 2.480E+03 1439300800030 2.013E+00 2.714E+03 1439300800031 2.692E+00 2.411E+03 1439300800032 3.815E+00 2.054E+03 1439300800033 5.639E+00 1.886E+03 1439300800034 9.520E+00 1.618E+03 1439300800035 ENDDATA 20 0 1439300800036 ENDSUBENT 35 0 1439300899999 SUBENT 14393009 20140603 14001439300900001 BIB 5 14 1439300900002 REACTION (92-U-233(N,ABS),,ETA) 1439300900003 METHOD (TOF) A tick foil of the fissionable material is 1439300900004 placed at the 45-m flight station and the fast 1439300900005 neutrons are detected by either a Hornyak button or 1439300900006 by a liquid scintillator with a neutron/gamma-ray 1439300900007 discrimination circuit. The 10BF3 detector measures 1439300900008 the incident neutron flux. This method is used only 1439300900009 to measure the relative value of eta as a function of 1439300900010 energy; the data are normalized to the thermal value 1439300900011 which has been obtained by other workers. 1439300900012 INC-SOURCE (REAC) 1439300900013 ERR-ANALYS (DATA-ERR) No information on source of uncertainties. 1439300900014 Authors say that data are preliminary in nature. 1439300900015 STATUS (CURVE) Fig. 12, page 547. 1439300900016 ENDBIB 14 0 1439300900017 NOCOMMON 0 0 1439300900018 DATA 3 43 1439300900019 EN DATA DATA-ERR 1439300900020 EV PRT/REAC PRT/REAC 1439300900021 0.141 2.350 1439300900022 0.182 2.276 1439300900023 0.247 2.303 1439300900024 0.289 2.307 1439300900025 0.339 2.301 1439300900026 0.390 2.273 1439300900027 0.446 2.305 1439300900028 0.496 2.263 1439300900029 0.542 2.257 1439300900030 0.597 2.243 1439300900031 0.645 2.325 1439300900032 0.686 2.269 1439300900033 0.724 2.338 0.037 1439300900034 0.774 2.277 1439300900035 0.824 2.235 1439300900036 0.879 2.225 1439300900037 0.944 2.229 1439300900038 1.009 2.283 1439300900039 1.079 2.273 1439300900040 1.167 2.281 1439300900041 1.268 2.266 1439300900042 1.373 2.205 1439300900043 1.503 2.198 0.041 1439300900044 1.554 2.216 0.051 1439300900045 1.590 2.133 1439300900046 1.650 2.141 1439300900047 1.692 2.196 1439300900048 1.744 2.227 1439300900049 1.802 2.111 1439300900050 1.859 2.184 1439300900051 1.919 2.225 1439300900052 1.993 2.233 1439300900053 2.066 2.108 1439300900054 2.134 2.038 1439300900055 2.212 2.005 0.051 1439300900056 2.294 1.604 1439300900057 2.385 1.478 0.041 1439300900058 2.469 1.514 1439300900059 2.570 1.848 1439300900060 2.676 1.833 0.041 1439300900061 2.782 2.116 0.051 1439300900062 2.902 2.082 1439300900063 3.019 2.163 1439300900064 ENDDATA 45 0 1439300900065 ENDSUBENT 64 0 1439300999999 ENDENTRY 9 0 1439399999999