ENTRY            20141   19831102                             00002014100000001 
SUBENT        20141001   19831102                             00002014100100001 
BIB                 13         27                                 2014100100002 
INSTITUTE  (2ZZZGEL)                                              2014100100003 
REFERENCE  (C,68WASH,1,491,6803)                                  2014100100004 
AUTHOR     (A.J.DERUYTTER, J.SPAEPEN, P.PELFER)                   2014100100005 
TITLE      -PRECISE 2200 M/S FISSION CROSS-SECTION OF U-235.-     2014100100006 
FACILITY   .BELGIAN BR2 HIGH FLUX REACTOR.                        2014100100007 
           (CHOPS)    SLOW CHOPPER, BURST WIDTH 25 MU-SEC, 184 HZ.2014100100008 
INC-SOURCE (REAC)     THE SLOW CHOPPER WAS INSTALLED AT THE       2014100100009 
            TANGENTIAL BEAM TUBE T-7 OF THE BR2-REACTOR.          2014100100010 
SAMPLE     .FOUR SAMPLES OF EVAPORATED U-F(4) LAYERS              2014100100011 
           .ISOTOPIC COMPOSITION IN PERCENT,                      2014100100012 
              U-234   1.0812+-0.0020,   U-235  93.336+-0.010,     2014100100013 
              U-236   0.2027+-0.0006,   U-238   5.380+-0.005.     2014100100014 
METHOD     (TOF)      TIME OF FLIGHT, FLIGHT PATH = 2003.6+-0.2 MM2014100100015 
DETECTOR   (SOLST)    ONE LARGE AU-SI SURFACE BARRIER DETECTOR WAS2014100100016 
            USED FOR THE DETECTION OF BOTH FISSION FRAGMENTS AND  2014100100017 
            ALPHA PARTICLES FROM B-10(N,ALPHA) REACTION FROM      2014100100018 
            NATURAL BORON SAMPLES USED AS STANDARD.               2014100100019 
MONITOR    (5-B-10(N,A)3-LI-7,,SIG)                               2014100100020 
            = 3834+-5 BARN AT 2200 M/SEC EVALUATED FROM           2014100100021 
            LITTERATURE BETWEEN 1960 AND 1967.                    2014100100022 
STATUS     .TAKEN FROM 1968 WASHINGTON CONF.,VOL.1,P.491.         2014100100023 
           (SPSDD)    SUPERSEDED BY 1970 HELSINKI CONFERENCE,     2014100100024 
            VOL.1, P.117. (SUBENTRY 20143.002).                   2014100100025 
HISTORY    (720821C)                                              2014100100026 
           (730309E)                                              2014100100027 
ERR-ANALYS .THE TOTAL ERROR IS 0.60 PER-CENT. ITS COMPOSITION     2014100100028 
            IS GIVEN IN TABLE 3 OF REFERENCE.                     2014100100029 
ENDBIB              27          0                                 2014100100030 
COMMON               1          3                                 2014100100031 
EN                                                                2014100100032 
MEV                                                               2014100100033 
 2.5300E-08                                                       2014100100034 
ENDCOMMON            3          0                                 2014100100035 
ENDSUBENT           34          0                                 2014100199999 
SUBENT        20141002   19831102                             00002014100200001 
BIB                  6         13                                 2014100200002 
REACTION   (92-U-235(N,F),,SIG)                                   2014100200003 
            2200 M/SEC CROSS-SECTION.                             2014100200004 
ANALYSIS   .LINEAR FIT FROM 20 CHANNELS BETWEEN 0.014             2014100200005 
            AND 0.063 EV.                                         2014100200006 
PART-DET   (FF)       FISSION FRAGMENTS.                          2014100200007 
COMMENT    .A VALUE OF 581.0+-5.4 BARN IS OBTAINED USING A HALF-  2014100200008 
            LIFE OF (2.470+-0.020)*1.E+5 YEAR, EVALUATED FROM     2014100200009 
            LITTERATURE.                                          2014100200010 
HISTORY    (720821C)                                              2014100200011 
           (730309E)                                              2014100200012 
CORRECTION .U-234 ALPHA BACKGROUND SUBTRACTED ASSUMING A HALF-    2014100200013 
            LIFE OF (2.443+-0.005)*1.E+5 YEAR, (SPERNOL AND LAUER,2014100200014 
            CBNM PRIVATE COMMUNICATION)                           2014100200015 
ENDBIB              13          0                                 2014100200016 
NOCOMMON             0          0                                 2014100200017 
NODATA               0          0                                 2014100200018 
ENDSUBENT           17          0                                 2014100299999 
SUBENT        20141003   19831102                             00002014100300001 
BIB                  6         11                                 2014100300002 
REACTION   (92-U-235(N,F),,SIG)                                   2014100300003 
            2200 M/SEC CROSS-SECTION.                             2014100300004 
ANALYSIS   .LINEAR FIT FROM 5 CHANNELS BETWEEN 0.0213             2014100300005 
            AND 0.0302 EV.                                        2014100300006 
PART-DET   (FF)       FISSION FRAGMENTS.                          2014100300007 
HISTORY    (720821C)                                              2014100300008 
           (730309E)                                              2014100300009 
CORRECTION .U-234 ALPHA BACKGROUND SUBTRACTED ASSUMING A HALF-    2014100300010 
            LIFE OF (2.443+-0.005)*1.E+5 YEAR, (SPERNOL AND LAUER,2014100300011 
            CBNM PRIVATE COMMUNICATION)                           2014100300012 
ERR-ANALYS .THE STATISTICAL ERROR COMPONENT IS 0.56 PER-CENT HERE.2014100300013 
ENDBIB              11          0                                 2014100300014 
NOCOMMON             0          0                                 2014100300015 
NODATA               0          0                                 2014100300016 
ENDSUBENT           15          0                                 2014100399999 
ENDENTRY             3          0                                 2014199999999