ENTRY            20675   19840127                             00002067500000001 
SUBENT        20675001   19840127                             00002067500100001 
BIB                 15         43                                 2067500100002 
INSTITUTE  (2AUSIRK)                                              2067500100003 
REFERENCE  (J,ZP/A,276,(1),75,760128)                             2067500100004 
AUTHOR     (H.FELBER,H.FRIEDMANN)                                 2067500100005 
TITLE      -DETERMINATION OF THE CROSS SECTION 14N(N,P)14C FOR    2067500100006 
            14.7 MEV NEUTRONS BY A MEASUREMENT OF THE ACTIVITY    2067500100007 
            OF 14C-                                               2067500100008 
FACILITY   (CCW  ) COCKCROFT-WALTON TYPE ACCELERATOR (200 KEV) OF 2067500100009 
            THE INSTITUT FUER RADIUMFORSCHUNG UND KERNPHYSIK OF   2067500100010 
            THE UNIVERSITY OF VIENNA.                             2067500100011 
INC-SOURCE (D-T  ) THE REACTION  T(D,N)4HE PRODUCES 14.7 MEV      2067500100012 
            NEUTRONS IN A TRITIUM-TARGET,BLANKETED ON TITANIUM.   2067500100013 
SAMPLE     .NATURAL NITROGEN AS UREA-COMPOUND (NH2CONH2) (15G).   2067500100014 
METHOD     (ACTIV) THE ACTIVITY OF THE BETA-DECAY OF C14 TO N14   2067500100015 
            WAS MEASURED AFTER IRRADIATION.                       2067500100016 
DETECTOR   (PROPC) LOW-LEVEL PROPORTIONAL COUNTER WAS USED        2067500100017 
            (HOUTERMANS-OESCHGER TYPE TUBE).                      2067500100018 
           .SUPRESSION OF COSMIC RAY COMPONENT BY SHIELDING       2067500100019 
            (24T IRON).                                           2067500100020 
           .SUPRESSION OF MESON COMPONENT BY ANTICOINCIDENCE      2067500100021 
            WITH A MULTI-WIRE SHIELDING COUNTER ASSEMBLY.         2067500100022 
           .EFFICIENCY WAS DETERMINED BY USING OXALIC ACID        2067500100023 
            STANDARD, SUPPLIED BY NBS(10.96+-0.03 COUNTS/MIN.).   2067500100024 
MONITOR    .REACTION CROSS SECTION FOR 27AL(N,ALPHA)24NA.         2067500100025 
           .FOR DETAILS SEE H.FRIEDMANN S THESIS,1975.            2067500100026 
COMMENT    .AGREEMENT WITH PREVIOUS DATA NOT ACHIEVED (J.CSIKAI   2067500100027 
            AND S.NAGY,NP A91,222(1967)).STATISTICAL MODEL        2067500100028 
            CALCULATIONS OF CROSS SECTION AND EXCITATION          2067500100029 
            FUNCTION CARRIED OUT.REASONABLE AGREEMENT WITH THE    2067500100030 
            PRESENTED EXPERIMENTAL DATA OF THE CROSS SECTION.     2067500100031 
STATUS     .14N(N,P)14C CROSS SECTION AT 14.7 MEV TAKEN FROM      2067500100032 
            REFERENCE.                                            2067500100033 
HISTORY    (761012C)                                              2067500100034 
           (770504E)                                              2067500100035 
CORRECTION .FOR SCATTERED NEUTRONS FROM THE ACCELERATOR ROOM,     2067500100036 
            FROM THE TARGET CONSTRUCTION AND FROM D(D,N)3HE       2067500100037 
            REACTIONS.DETAILS SEE H.FRIEDMANN,THESIS,VIENNA       2067500100038 
            1975.                                                 2067500100039 
ERR-ANALYS .ERROR INCLUDES THE MEAN OF THE UNCERTAINTIES OF THE   2067500100040 
            FOLLOWING CONTRIBUTIONS-                              2067500100041 
            STATISTICAL UNCERTAINTIES,BACKGROUND,EFFICIENCY       2067500100042 
            (DETERMINED BY THE UNCERTAINTY IN THE OXALIC ACID     2067500100043 
            STANDARD),PHYSICAL CONSTANTS,FLUX DETERMINATION,      2067500100044 
            CORRECTION FOR SCATTERED NEUTRONS.                    2067500100045 
ENDBIB              43          0                                 2067500100046 
NOCOMMON             0          0                                 2067500100047 
ENDSUBENT           46          0                                 2067500199999 
SUBENT        20675002   19840127                             00002067500200001 
BIB                  2          3                                 2067500200002 
REACTION   (7-N-14(N,P)6-C-14,,SIG)                               2067500200003 
HISTORY    (761012C)                                              2067500200004 
           (770504E)                                              2067500200005 
ENDBIB               3          0                                 2067500200006 
NOCOMMON             0          0                                 2067500200007 
DATA                 4          1                                 2067500200008 
EN         EN-ERR     DATA       DATA-ERR                         2067500200009 
MEV        MEV        MB         MB                               2067500200010 
 1.4700E+01 1.0000E-01 3.8000E+01 3.0000E+00                      2067500200011 
ENDDATA              3          0                                 2067500200012 
ENDSUBENT           11          0                                 2067500299999 
ENDENTRY             2          0                                 2067599999999