ENTRY 10166 20170801 14301016600000001 SUBENT 10166001 20170801 14301016600100001 BIB 13 54 1016600100002 TITLE Neutron yield of 252Cf based on absolute measurement 1016600100003 of the neutron rate and fission rate 1016600100004 AUTHOR (A.De Volpi,K.G.Porges) 1016600100005 REFERENCE (J,PR/C,1,683,1970) 1016600100006 #doi:10.1103/PhysRevC.1.683 1016600100007 (J,JNE,26,75,1972) corrected data. 1016600100008 #doi:10.1016/0022-3107(72)90049-4 1016600100009 REL-REF (M,14294001,A.De Volpi+,C,66PARIS,1,297,1967) The 1016600100010 essentials of manganese bath and absolute 1016600100011 fission-counter calibration by a coincidence method. 1016600100012 INSTITUTE (1USAANL) 1016600100013 METHOD (MANGB) Manganese bath facility for measurement of 1016600100014 neutron emission rate. 1016600100015 DETECTOR (FISCH) Fission rate obtained primarily from absolute 1016600100016 fission-neutron coincidence data, with special 1016600100017 attention to angular correlation effects. 1016600100018 PART-DET (N,FF) Neutrons and fission fragments. 1016600100019 MONITOR Manganese bath independently calibrated with 1016600100020 reference to absolute beta-gamma coincidence counting 1016600100021 of 56Mn. 1016600100022 CORRECTION Correction to Mn bath for parasitic absorption by 1016600100023 high-energy neutrons in sulfur and oxygen, effective 1016600100024 hydrogen/manganese thermal cross section ratio, and 1016600100025 source-holder thermal absorption. 1016600100026 ERR-ANALYS (ERR-T) The error assigned is a combination of 1016600100027 statistical and systematic effects at a confidence 1016600100028 level of 68%. 1016600100029 (ERR-SYS,,1.) 1016600100030 (ERR-1) Half-life, 0.01%. 1016600100031 (ERR-2) Delayed neutrons, 0.05%. 1016600100032 (ERR-3) Gamma sensitivity of neutron detector, 0.02%. 1016600100033 (ERR-4) Absolute counting, 0.10%. 1016600100034 (ERR-5,0.02,0.50) Anisotropy factor. 1016600100035 (ERR-6,0.02,0.60) Angular-distribution eccentricity. 1016600100036 (ERR-7) alpha pileup, 0.05%. 1016600100037 (ERR-8,0.05,0.30) Aggregate-recoil loss effect. 1016600100038 (ERR-9) Spontaneous fission contaminants, 0.02%. 1016600100039 (ERR-10) alpha,n reactions, 0.02%. 1016600100040 (ERR-11) Neutron detector efficiency dependence on 1016600100041 nubar, 0.05%. 1016600100042 (ERR-12) Fission detector efficiency dependence on 1016600100043 nubar, 0.05%. 1016600100044 (ERR-13) Multiplicity averaging, 0.09%. 1016600100045 STATUS (APRVD) Approved by author 1016600100046 HISTORY (19711228C) 1016600100047 (19741004A) New value added 1016600100048 (19820527A) Converted to reaction formalism 1016600100049 (20001214A) Converted to new date formats, lower case. 1016600100050 Subentry 2 deleted. Data unit updated. 1016600100051 (20050627A) DR: Reference corrected. Units updated. 1016600100052 (20110812U) SD: Author's name corrected (Devolpi => 1016600100053 De Volpi); word in title corrected. 1016600100054 (20170801A) BP: Added REL-REF, doi, error analysis 1016600100055 corrections and updates. 1016600100056 ENDBIB 54 0 1016600100057 COMMON 10 6 1016600100058 ERR-1 ERR-2 ERR-3 ERR-4 ERR-7 ERR-9 1016600100059 ERR-10 ERR-11 ERR-12 ERR-13 1016600100060 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 1016600100061 PER-CENT PER-CENT PER-CENT PER-CENT 1016600100062 0.1 0.05 0.02 0.10 0.05 0.021016600100063 0.02 0.05 0.05 0.05 1016600100064 ENDCOMMON 6 0 1016600100065 ENDSUBENT 64 0 1016600199999 NOSUBENT 10166002 20001214 00001016600200001 SUBENT 10166003 20170801 14301016600300001 BIB 4 6 1016600300002 REACTION (98-CF-252(0,F),,NU) 1016600300003 CORRECTION Value increased by De Volpi as a result of 1016600300004 re-evaluated corrections determined through 1016600300005 supplementary experiments. 1016600300006 HISTORY (20170801A) BP: DATA-ERR --> ERR-T correction. 1016600300007 STATUS (TABLE) Data taken from J. Nucl.En. 26, 75 (1972). 1016600300008 ENDBIB 6 0 1016600300009 NOCOMMON 0 0 1016600300010 DATA 2 1 1016600300011 DATA ERR-T 1016600300012 PRT/FIS PRT/FIS 1016600300013 3.729 0.015 1016600300014 ENDDATA 3 0 1016600300015 ENDSUBENT 14 0 1016600399999 ENDENTRY 3 0 1016699999999