ENTRY 14405 20150128 14051440500000001 SUBENT 14405001 20150128 14051440500100001 BIB 9 27 1440500100002 TITLE Correlated Neutron Emissions from 252Cf 1440500100003 AUTHOR (S.A.Pozzi,B.Wieger,A.Enqvist,S.D.Clarke,M.Flaska, 1440500100004 M.Marcath,E.Larsen,R.C.Haight,E.Padovani) 1440500100005 INSTITUTE (1USAMHG,1USALAS,2ITYMIP) 1440500100006 REFERENCE (J,NSE,178,250,2014) 1440500100007 FACILITY Spontaneous fission source 1440500100008 Two 252Cf sources were measured independently. The 1440500100009 manufacture date and intensity at the time of the 1440500100010 measurement were 1994 and 56 000 fissions/s for 1440500100011 source 1, and 2005 and 4800 fissions/s for source 2. 1440500100012 Sources were initially loaded with 82% of 252Cf and 1440500100013 10% of 250Cf by weight.Based on the initial 1440500100014 composition and branching ratios for these sources, 1440500100015 14.5% and 1.8% of fissions are from 250Cf for sources 1440500100016 1 and 2, respectively. 1440500100017 DETECTOR (SCIN) Measurement setup consisted of an array of 14 1440500100018 EJ-309 liquid scintillation detectors, arranged in a 1440500100019 ring around a 252Cf source directly on a thin metal 1440500100020 table. Each cell is cylindrical and has dimensions of 1440500100021 7.62- cm diameter x 5.08-cm length and is read out by 1440500100022 7.62-cm-diam ET-Enterprises 9821B photomultiplier tubes1440500100023 METHOD (COINC) Coincidence between two neutron detectors 1440500100024 required 1440500100025 (PSD) Pulse shape analysis was used to identify 1440500100026 fission neutrons 1440500100027 ERR-ANALYS (DATA-ERR) No information given 1440500100028 HISTORY (20150128C) Compiled by S.H. 1440500100029 ENDBIB 27 0 1440500100030 COMMON 1 3 1440500100031 ANG-RSL 1440500100032 ADEG 1440500100033 6.5 1440500100034 ENDCOMMON 3 0 1440500100035 ENDSUBENT 34 0 1440500199999 SUBENT 14405002 20150128 14051440500200001 BIB 3 7 1440500200002 REACTION (98-CF-252(0,F),PR,NU/DA,,MSC) 1440500200003 STATUS (TABLE) Data taken from tab. 1 of the reference 1440500200004 METHOD Detector threshold equivalent to 40keV electrons 1440500200005 or 475 keV neutron energy deposited to proton. 1440500200006 252Cf source with 56 000 fissions/s (in 1994) 1440500200007 Data show total number of correlated neutrons per 1440500200008 fission at specific relative angle 1440500200009 ENDBIB 7 0 1440500200010 NOCOMMON 0 0 1440500200011 DATA 3 5 1440500200012 ANG-RL DATA DATA-ERR 1440500200013 ADEG ARB-UNITS ARB-UNITS 1440500200014 77.1 0.83 0.0008 1440500200015 102.8 0.85 0.0008 1440500200016 128.5 0.97 0.0008 1440500200017 154.3 1.12 0.0009 1440500200018 180.0 1.19 0.0012 1440500200019 ENDDATA 7 0 1440500200020 ENDSUBENT 19 0 1440500299999 SUBENT 14405003 20150128 14051440500300001 BIB 3 7 1440500300002 REACTION (98-CF-252(0,F),PR,NU/DA,,MSC) 1440500300003 STATUS (TABLE) Data taken from tab. 1 of the reference 1440500300004 METHOD Detector threshold equivalent to 40keV electrons 1440500300005 or 475 keV neutron energy deposited to proton. 1440500300006 252Cf source with 4 800 fissions/s (in 2004) 1440500300007 Data show total number of correlated neutrons per 1440500300008 fission at specific relative angle 1440500300009 ENDBIB 7 0 1440500300010 NOCOMMON 0 0 1440500300011 DATA 3 5 1440500300012 ANG-RL DATA DATA-ERR 1440500300013 ADEG ARB-UNITS ARB-UNITS 1440500300014 77.1 0.84 0.0006 1440500300015 102.8 0.86 0.0006 1440500300016 128.5 0.97 0.0006 1440500300017 154.3 1.11 0.0007 1440500300018 180.0 1.12 0.001 1440500300019 ENDDATA 7 0 1440500300020 ENDSUBENT 19 0 1440500399999 SUBENT 14405004 20150128 14051440500400001 BIB 3 7 1440500400002 REACTION (98-CF-252(0,F),PR,NU/DA,,MSC) 1440500400003 STATUS (TABLE) Data taken from tab. 1 of the reference 1440500400004 METHOD Detector threshold equivalent to 100keV electrons 1440500400005 or 830 keV neutron energy deposited to proton. 1440500400006 252Cf source with 56 000 fissions/s (in 1994) 1440500400007 Data show total number of correlated neutrons per 1440500400008 fission at specific relative angle 1440500400009 ENDBIB 7 0 1440500400010 NOCOMMON 0 0 1440500400011 DATA 3 5 1440500400012 ANG-RL DATA DATA-ERR 1440500400013 ADEG ARB-UNITS ARB-UNITS 1440500400014 77.1 0.38 0.0005 1440500400015 102.8 0.38 0.0005 1440500400016 128.5 0.46 0.0006 1440500400017 154.3 0.56 0.0006 1440500400018 180.0 0.6 0.0009 1440500400019 ENDDATA 7 0 1440500400020 ENDSUBENT 19 0 1440500499999 SUBENT 14405005 20150128 14051440500500001 BIB 3 7 1440500500002 REACTION (98-CF-252(0,F),PR,NU/DA,,MSC) 1440500500003 STATUS (TABLE) Data taken from tab. 1 of the reference 1440500500004 METHOD Detector threshold equivalent to 100keV electrons 1440500500005 or 830 keV neutron energy deposited to proton. 1440500500006 252Cf source with 4 800 fissions/s (in 2004) 1440500500007 Data show total number of correlated neutrons per 1440500500008 fission at specific relative angle 1440500500009 ENDBIB 7 0 1440500500010 NOCOMMON 0 0 1440500500011 DATA 3 5 1440500500012 ANG-RL DATA DATA-ERR 1440500500013 ADEG ARB-UNITS ARB-UNITS 1440500500014 77.1 0.39 0.0004 1440500500015 102.8 0.39 0.0004 1440500500016 128.5 0.47 0.0004 1440500500017 154.3 0.56 0.0005 1440500500018 180.0 0.6 0.0007 1440500500019 ENDDATA 7 0 1440500500020 ENDSUBENT 19 0 1440500599999 ENDENTRY 5 0 1440599999999