ENTRY            22230   19930329                             00002223000000001 
SUBENT        22230001   19930329                             00002223000100001 
BIB                 10         16                                 2223000100002 
REFERENCE  (J,NP/A,526,265,91)                                    2223000100003 
TITLE      -NUCLEON CAPTURE BY 3HE AND THE PRODUCTION OF SOLAR    2223000100004 
            HEP-NEUTRINOS - CROSS SECTIONS AND SHELL-MODEL CAL-   2223000100005 
            CULATIONS.                                            2223000100006 
AUTHOR     (R.WERVELMAN,K.ABRAHAMS,H.POSTMA,J.G.L.BOOTEN,         2223000100007 
            A.G.M.VAN HEES)                                       2223000100008 
INSTITUTE  (2NEDRCN) R.W., K.A. AND EXPERIMENTAL SITE.            2223000100009 
           (2NEDDEL) H.P.                                         2223000100010 
           (2NEDUTR) J.G.L.B. AND A.G.M.V H.                      2223000100011 
FACILITY   (REAC ) THE HIGH FLUX REACTOR IN PETTEN.               2223000100012 
METHOD     (GSPEC)                                                2223000100013 
PART-DET   (G    )                                                2223000100014 
ERR-ANALYS (DATA-ERR)                                             2223000100015 
STATUS     .DATA TAKEN FROM MAIN REF.                             2223000100016 
HISTORY    (921219C) N.O.                                         2223000100017 
           (930329E)                                              2223000100018 
ENDBIB              16          0                                 2223000100019 
NOCOMMON             0          0                                 2223000100020 
ENDSUBENT           19          0                                 2223000199999 
SUBENT        22230002   19930329                             00002223000200001 
BIB                  8         29                                 2223000200002 
REACTION   (2-HE-3(N,G)2-HE-4,,SIG,,MXW)                          2223000200003 
INC-SOURCE (REAC ) THE HORIZONTAL BEAM-TUBE HB11, WHICH HAS A SYS-2223000200004 
            TEM OF FOCUSING NEUTRON MIRRORS NEAR THE REACTOR CORE,2223000200005 
            WAS USED. TRANSMISSION OF NEUTRONS CAN ONLY TAKE PLACE2223000200006 
            BY TOTAL REFLECTION AT THE NICKEL MIRROR SURFACES,    2223000200007 
            WHICH THUS ACT AS A LOW-PASS NEUTRON FILTER. THE 6 CM 2223000200008 
            DIAMETER NEUTRON BEAM WAS SHAPED WITH AN ADDITIONAL   2223000200009 
            BORON PLASTIC AND LIF DIAPHRAGM NEAR THE TARGET.      2223000200010 
INC-SPECT  .THE NEUTRON SPECTRUM EAS DETERMINED BY IRRADIATING TWO2223000200011 
            STACKS OF TWENTY 400 MG/CM2 THICK 2.5 X 2.5 CM2 GOLD  2223000200012 
            FOILS, ONE BEFORE AND ONE AFTER THE TARGET GAS CELL.  2223000200013 
DETECTOR   (NAICR) THE 20.5 MEV CAPTURE GAMMA RAYS WERE DETECTED  2223000200014 
            BY TWO 25 CM DIAMETER BY 25 CM LONG NAI-TL DETECTORS, 2223000200015 
            BOTH PLACED 32.6 CM FROM THE TARGET CELL AND AT 90    2223000200016 
            DEGREES WITH RESPECT TO THE NEUTRON BEAM. THE DETEC-  2223000200017 
            TORS WERE SHIELDED AGAINST SCATTERED NEUTRONS AND     2223000200018 
            GAMMA-RAYS NOT ORIGINATING FROM THE TARGET. THE RES-  2223000200019 
            PONSE FUNCTION WAS CALCULATED WITH A MONTE CARLO CODE.2223000200020 
SAMPLE     .THE TARGET CELL CONSISTED OF AN ALUMINUM CYLINDRICAL  2223000200021 
            CONTAINER, 9 CM IN LENGTH AND 8 CM IN DIAMETER, WITH  2223000200022 
            40 MICROMETER THICK ARAMID FOILS AS ENTRANCE AND EXIT 2223000200023 
            WINDOWS. THE TARGET GAS WAS HIGH PURITY, RESEARCH     2223000200024 
            GRADE HELIUM-3 GAS. THE GAS PRESSURE WAS 700-750 TORR.2223000200025 
MONITOR    (79-AU-197(N,G)79-AU-198-G,,SIG) THE NEUTRON FLUX WAS  2223000200026 
            DETERMINED BY IRRADIATION OF 100 MG/CM2 THICK GOLD    2223000200027 
            FOILS.                                                2223000200028 
STATUS     .DATA TAKEN FROM MAIN REF.                             2223000200029 
HISTORY    (921219C) N.O.                                         2223000200030 
           (930329E)                                              2223000200031 
ENDBIB              29          0                                 2223000200032 
COMMON               2          3                                 2223000200033 
MONIT      MONIT-ERR                                              2223000200034 
B          B                                                      2223000200035 
 9.8650E+01 9.0000E-02                                            2223000200036 
ENDCOMMON            3          0                                 2223000200037 
DATA                 3          1                                 2223000200038 
EN-DUMMY   DATA       DATA-ERR                                    2223000200039 
EV         MICRO-B    MICRO-B                                     2223000200040 
 2.5300E-02 5.5000E+01 3.0000E+00                                 2223000200041 
ENDDATA              3          0                                 2223000200042 
ENDSUBENT           41          0                                 2223000299999 
SUBENT        22230003   19930329                             00002223000300001 
BIB                  8         22                                 2223000300002 
REACTION   (2-HE-3(N,G)2-HE-4,,SIG)                               2223000300003 
INC-SOURCE (REAC ) THE FILTERED BEAM FACILITY HB12, WHICH CONTAINS2223000300004 
            24 CM OF IRON, 36 CM OF ALUMINUM AND 6 CM OF SULPHUR, 2223000300005 
            WAS USED. BY TAPERED SOLLER-SLIT COLLIMATORS, A BEAM  2223000300006 
            DIMENSION OF 4 X 10 CM2 WAS OBTAINED.                 2223000300007 
INC-SPECT  .QUASI-MONOENERGETIC BEAM OF 24.5 KEV.                 2223000300008 
DETECTOR   (NAICR) THE 20.5 MEV CAPTURE GAMMA RAYS WERE DETECTED  2223000300009 
            BY A 25 CM DIAMETER BY 25 CM LONG NAI-TL DETECTOR,    2223000300010 
            PLACED AT 25 CM FROM THE TARGET CELL AND AT 90 DEGREES2223000300011 
            WITH RESPECT TO THE NEUTRON BEAM. THE DETECTOR WAS    2223000300012 
            SHIELDED AGAINST SCATTERED NEUTRONS AND GAMMA-RAYS NOT2223000300013 
            ORIGINATING FROM THE TARGET. THE RESPONSE FUNCTION WAS2223000300014 
            CALCULATED WITH A MONTE CARLO CODE.                   2223000300015 
SAMPLE     .A CRYOGENIC LIQUID 3HE TARGET, OPERATING AT A TEMPE-  2223000300016 
            RATURE OF 1.28+/-0.02 K WAS USED.                     2223000300017 
MONITOR    (79-AU-197(N,G)79-AU-198-G,,SIG) THE NEUTRON FLUX WAS  2223000300018 
            DETERMINED BY IRRADIATION OF A 350 MG/CM2 THICK GOLD  2223000300019 
            FOIL, SANDWICHED BETWEEN TWO 600 MG/CM2 GOLD PLATES   2223000300020 
            AND 1 MM CADMIUM SHEETS.                              2223000300021 
STATUS     .DATA TAKEN FROM MAIN REF.                             2223000300022 
HISTORY    (921219C) N.O.                                         2223000300023 
           (930329E)                                              2223000300024 
ENDBIB              22          0                                 2223000300025 
COMMON               2          3                                 2223000300026 
MONIT      MONIT-ERR                                              2223000300027 
MB         MB                                                     2223000300028 
 6.2300E+02 9.0000E+00                                            2223000300029 
ENDCOMMON            3          0                                 2223000300030 
DATA                 4          1                                 2223000300031 
EN         EN-RSL-HW  DATA       DATA-ERR                         2223000300032 
KEV        KEV        MICRO-B    MICRO-B                          2223000300033 
 2.4500E+01 1.8000E+00 9.1000E+00 8.0000E-01                      2223000300034 
ENDDATA              3          0                                 2223000300035 
ENDSUBENT           34          0                                 2223000399999 
ENDENTRY             3          0                                 2223099999999