ENTRY            12504   20201211                             14761250400000001 
SUBENT        12504001   20201211                             14761250400100001 
BIB                 12         28                                 1250400100002 
TITLE      Neutrons per Fission from 49 Compared with 25:         1250400100003 
           Slightly Delayed Neutron from 49 and 25                1250400100004 
AUTHOR     (J.W.Dewire,R.R.Wilson,W.M.Woodward)                   1250400100005 
REFERENCE  (R,LA-104,1944)                                        1250400100006 
INSTITUTE  (1USALAS)                                              1250400100007 
FACILITY   (CYCLO,1USALAS)                                        1250400100008 
INC-SPECT  Thermal spectrum.                                      1250400100009 
DETECTOR   (PROPC) Paraffin-lined proportional counter.           1250400100010 
           (IOCH)                                                 1250400100011 
METHOD     (COINC) Coincidence between 239Pu (49) fissions in an  1250400100012 
           ionization chamber and proton recoils in a paraffin    1250400100013 
           lined proportional counter caused by the neutrons      1250400100014 
           given off during fission are compared to similar       1250400100015 
           coincidence when 235U (25) is used in an identical     1250400100016 
           geometry. To produce fissions, the chamber was placed  1250400100017 
           in the 11'x7'x6'8" graphite block about 4' back from   1250400100018 
           the face exposed to the cyclotron neutrons.            1250400100019 
ANALYSIS   Weighted mean of nubar239Pu/nubar235U for all data was 1250400100020 
           adopted.                                               1250400100021 
ERR-ANALYS (DATA-ERR) Experimental and theoretical probable       1250400100022 
           errors.                                                1250400100023 
COMMENT    Compiler's comment: Los Alamos notation uses 49 for    1250400100024 
           Z=94, A=239 (239Pu) and 25 for Z=92, A=235 (235U).     1250400100025 
HISTORY    (19760804T) Translated from SCISRS.                    1250400100026 
           (19830809A) converted to reaction formalism            1250400100027 
           (20201211A) BP: Added facility, method, analysis,      1250400100028 
           errors, updated to new date formats, lower case.       1250400100029 
           Corrections according last EXFOR rules and Dict.       1250400100030 
ENDBIB              28          0                                 1250400100031 
NOCOMMON             0          0                                 1250400100032 
ENDSUBENT           31          0                                 1250400199999 
SUBENT        12504002   20201211                             14761250400200001 
BIB                  3          4                                 1250400200002 
REACTION   ((94-PU-239(N,F),PR,NU,,MXW)/                          1250400200003 
           (92-U-235(N,F),PR,NU,,MXW))                            1250400200004 
HISTORY    (20201211A) BP: Added status.                          1250400200005 
STATUS     (TABLE) Table I, page 10.                              1250400200006 
ENDBIB               4          0                                 1250400200007 
NOCOMMON             0          0                                 1250400200008 
DATA                 3          1                                 1250400200009 
EN         DATA       DATA-ERR                                    1250400200010 
MEV        NO-DIM     NO-DIM                                      1250400200011 
   2.53E-08      1.182      0.009                                 1250400200012 
ENDDATA              3          0                                 1250400200013 
ENDSUBENT           12          0                                 1250400299999 
ENDENTRY             2          0                                 1250499999999