ENTRY            40296   20170203                             417540296  0    1 
SUBENT        40296001   20170203                             417540296  1    1 
BIB                 10         56                                 40296  1    2 
TITLE       Absolute measurement the of U-235 and U-238 fission   40296  1    3 
           cross-sections in the Cf-252 fission neutron spectrum. 40296  1    4 
AUTHOR     (V.M.Adamov,L.V.Drapchinskij,G.Yu.Kudryavtsev,         40296  1    5 
           S.S.Kovalenko,K.A.Petrzhak,L.A.Pleskachevskij,         40296  1    6 
           A.M.Sokolov)                                           40296  1    7 
REFERENCE  (R,INDC(CCP)-180,1982) Final data.                     40296  1    8 
            English translation of RI-52 :                        40296  1    9 
           (R,RI-52,1976) Khlopin Radium Institute report.        40296  1   10 
           (C,73KIEV,4,21,197305) Preliminary measurement data    40296  1   11 
INSTITUTE  (4RUSRI)                                               40296  1   12 
INC-SOURCE (CF252)    Spont.fiss.californium-252 .                40296  1   13 
            Prepared by thermoscattering of Cf.                   40296  1   14 
            Diameter of Cf foil 3.0+-0.2 mm.                      40296  1   15 
SAMPLE      Prepared by high-frequency plasma spraying.  U(3)O(8).40296  1   16 
           Non-uniformity less 1%.                                40296  1   17 
           Weights were measured by alpha-activity in 2PI geometry40296  1   18 
           in mesh ionization pulse chamber (U-238) and           40296  1   19 
           semi-conductor detector in a small solid angle (U-235).40296  1   20 
           Isotopic analysis was performed by alpha spectrometer. 40296  1   21 
ANALYSIS    Fission cross-section is defined according to         40296  1   22 
            the formula                                           40296  1   23 
               SIGMAfis=(2PI*A*Nf*R**2)/(N0*P*NUCf*G*K*NCf)       40296  1   24 
            here Nf- a number of fissions for uranium isotope,    40296  1   25 
                 N0- Avogadro number,                             40296  1   26 
                 R- radius of the active foil target,             40296  1   27 
                 P- weight of the fissionable material in target, 40296  1   28 
                NUCf- prompt neutron number for Cf-252 from       40296  1   29 
                      Second IAEA Panel Meeting on Neutron        40296  1   30 
                      Standard Reference Data, Vienna, 20-24 Nov. 40296  1   31 
                      1972.                                       40296  1   32 
                NCf- a number of fissions for Cf-252,             40296  1   33 
                 G - geometry factor of experimental setup        40296  1   34 
                 K - coefficient of correction for counting errors40296  1   35 
                     in Cf-252 FF counting channel,               40296  1   36 
                 A - atomic weight of U isotope.                  40296  1   37 
REL-REF    (R,,,C,72VIENNA,,1972)                                 40296  1   38 
           Second IAEA Panel Meeting on Neutron Standard Reference40296  1   39 
           Data, Vienna, 20-24 Nov.1972, IIIC 3.                  40296  1   40 
            Reference for NU of Cf-252.                           40296  1   41 
CORRECTION For neutron scattering - 3% .                          40296  1   42 
           For fission of impurities in target.                   40296  1   43 
           For finite dimensions  of the source                   40296  1   44 
HISTORY    (19750521C)                                            40296  1   45 
           (19861021A) Data assigned as preliminary by the        40296  1   46 
                     compiler's decision                          40296  1   47 
           (20130206A) M.M. Upper -> lower case correction.       40296  1   48 
           Dates were corrected for 4-digits year.                40296  1   49 
           Reference R,INDC(CCP)-180 was added.                   40296  1   50 
           BIB information were updated.                          40296  1   51 
           Preliminary data were replaced by final.               40296  1   52 
           Detail ERR-ANALYS was added.                           40296  1   53 
           KT -> KT-DUMMY; 1.42 -> 1.406 MeV ( as on page 10 of   40296  1   54 
           R,INDC(CCP)-180,1982).                                 40296  1   55 
           (20170203A) M.M. Subents 002,003 were deleted -        40296  1   56 
            duplicative data of Subents 40547.004, .006,          40296  1   57 
            respectively.                                         40296  1   58 
ENDBIB              56          0                                 40296  1   59 
NOCOMMON             0          0                                 40296  1   60 
ENDSUBENT           59          0                                 40296  199999 
NOSUBENT      40296002   20170203                             417540296  2    1 
NOSUBENT      40296003   20170203                             417540296  3    1 
ENDENTRY             3          0                                 4029699999999