ENTRY 21837 19860609 00002183700000001 SUBENT 21837001 19860609 00002183700100001 BIB 15 46 2183700100002 INSTITUTE (2GERJUL) EXPERIMENTAL SITE. S.M.Q.,R.W. 2183700100003 (2ZZZGEL) H.L. 2183700100004 REFERENCE (J,PR/C,25,(1),203,8201) 2183700100005 AUTHOR (S.M.QAIM,R.WOELFE,H.LISKIEN) 2183700100006 TITLE -EXCITATION FUNCTIONS OF (N,T) REACTIONS ON 2183700100007 AL-27, CO-59 AND NB-93. 2183700100008 FACILITY (VDG ) VAN DE GRAAFF. 2183700100009 INC-SOURCE (D-T ) WATER COOLED TI(T) TARGET, BOMBARDED 2183700100010 WITH 3 MEV DEUTERONS AT 50 MICRO-AMP. 2183700100011 INC-SPECT .EACH SAMPLE SEGMENT COVERED A CERTAIN ANGULAR RANGE, 2183700100012 AND A CORRESPONDING PRIMARY NEUTRON ENERGY RANGE. 2183700100013 A MONTE CARLO CALCULATION WAS PERFORMED TO CALCULATE 2183700100014 THE SPECTRUM SEEN BY EACH SEGMENT, TAKING INTO 2183700100015 ACCOUNT SINGLE ( BUT NOT MULTIPLE ) SCATTERING IN 2183700100016 THE TRITIUM TARGET, COOLING WATER AND SURROUNDING 2183700100017 CAPSULE. 2183700100018 METHOD (ACTIV) VACUUM EXTRACTION AND GAS COUNTING 2183700100019 OF TRITIUM. ACTIVATION REACTIONS USED 2183700100020 AS INTERNAL MONITORS. 2183700100021 DETECTOR (PROPC) GAS COUNTING TUBE TO MEASURE TRITIUM ACTIVITY 2183700100022 USING LOW-LEVEL ANTICOINCIDENCE BETA- COUNTING 2183700100023 IN THE GAS PHASE. 2183700100024 PROTON RECOIL TELESCOPE 80 CM FROM THE NEUTRON 2183700100025 SOURCE IN THE 130 DEGREE DIRECTION, USED AS AN 2183700100026 EXTERNAL FLUX MONITOR. 2183700100027 (GELI ) LARGE SIZE GELI DETECTOR TO MEASURE GAMMA 2183700100028 ACTIVITY INDUCED BY THE MONITOR REACTIONS. 2183700100029 PART-DET (B- ) BETA PARTICLES FROM TRITIUM DECAY. 2183700100030 (DG ) DECAY GAMMAS FROM MONITOR REACTIONS. 2183700100031 HALF-LIFE (HL,1-H-3) 2183700100032 STATUS .DATA TAKEN FROM REFERENCE. 2183700100033 HISTORY (830222C) A.P.T. 2183700100034 (830322E) 2183700100035 CORRECTION .NEUTRON SCATTERING IN THE TRITIUM TARGET,COOLING WATE 2183700100036 WATER AND THE SURROUNDING CAPSULE ( SEE KEYWORD 2183700100037 INC-SPECT ). 2183700100038 ERR-ANALYS (ERR-T) TOTAL ERROR, FORMED BY SUMMING THE 2183700100039 (DATA-ERR) STATISTICAL AND SYSTEMATIC ERRORS IN 2183700100040 QUADRATURE. 2183700100041 THE STATISTICAL ERRORS VARIED BETWEEN +/-0.6 2183700100042 AND +/-2.9 PER CENT. THE SYSTEMATIC ERRORS 2183700100043 COMPRISED - 2183700100044 (ERR-1) COUNTING EFFICIENCY UNCERTAINTY 2183700100045 ( +/- 4 PER CENT ). 2183700100046 (ERR-2) QUANTITATIVE TRITIUM EXTRACTION UNCERTAINTY 2183700100047 ( +/- 2 PER CENT ). 2183700100048 ENDBIB 46 0 2183700100049 COMMON 4 3 2183700100050 ERR-1 ERR-2 HL HL-ERR 2183700100051 PER-CENT PER-CENT YR YR 2183700100052 4.0000E+00 2.0000E+00 1.2350E+01 2.0000E-02 2183700100053 ENDCOMMON 3 0 2183700100054 ENDSUBENT 53 0 2183700199999 SUBENT 21837002 19860609 00002183700200001 BIB 5 27 2183700200002 REACTION 1(13-AL-27(N,T)12-MG-25,,SIG) 2183700200003 2((13-AL-27(N,T)12-MG-25,,SIG)/ 2183700200004 (13-AL-27(N,A)11-NA-24,,SIG)) 2183700200005 SAMPLE .4 99.999 PER CENT PURE ALUMINIUM SEGMENTS IN 2183700200006 A HALF-SPHERICAL GEOMETRY, PREPARED BY MELTING 2183700200007 AL POWDER IN AN ARGON ATMOSPHERE. 2183700200008 WEIGHT ANGULAR RANGE NEUTRON ENERGY RANGE 2183700200009 ------ ------------- -------------------- 2183700200010 7.71 G 0-35 DEGREES 19.1 +/- 0.5 MEV 2183700200011 6.60 G 35-50 DEGREES 18.3 +/- 0.4 MEV 2183700200012 8.07 G 50-65 DEGREES 17.4 +/- 0.5 MEV 2183700200013 7.42 G 65-83 DEGREES 16.3 +/- 0.6 MEV 2183700200014 MONITOR 1(13-AL-27(N,A)11-NA-24,,SIG) 2183700200015 TWO EXTERNAL MONITORS WERE ALSO USED - 2183700200016 1) A PROTON RECOIL COUNTER TO MEASURE THE 2183700200017 NEUTRON FLUX DIRECTLY 2183700200018 2) THE ACTIVITY INDUCED IN A PIECE OF COBALT 2183700200019 PLACED 25 CM FROM THE NEUTRON SOURCE IN THE 2183700200020 0 DEGREE DIRECTION. 2183700200021 THE RESULTS FROM THESE EXTERNAL MONITORS WERE 2183700200022 NOT VERY ACCURATE BECAUSE THE IRRADIATION 2183700200023 GEOMETRY WAS NOT WELL KNOWN. 2183700200024 STATUS .TABLE 1 OF THE REFERENCE. 2183700200025 HISTORY (830222C) A.P.T. 2183700200026 (830322E) 2183700200027 (860305A)N.CH 2183700200028 (860411E) 2183700200029 ENDBIB 27 0 2183700200030 NOCOMMON 0 0 2183700200031 DATA 6 4 2183700200032 EN EN-ERR DATA 1ERR-T 1DATA 2DATA-ERR 22183700200033 MEV MEV MB MB NO-DIM NO-DIM 2183700200034 1.6300E+01 6.0000E-01 3.5000E+00 2.7000E-01 3.8300E-02 2.2000E-032183700200035 1.7400E+01 5.0000E-01 4.0500E+00 3.0000E-01 5.5700E-02 3.1000E-032183700200036 1.8300E+01 4.0000E-01 4.5700E+00 3.4000E-01 7.6900E-02 4.3000E-032183700200037 1.9100E+01 5.0000E-01 4.8300E+00 3.6000E-01 1.0100E-01 6.0000E-032183700200038 ENDDATA 6 0 2183700200039 ENDSUBENT 38 0 2183700299999 SUBENT 21837003 19860609 00002183700300001 BIB 5 24 2183700300002 REACTION 1(27-CO-59(N,T)26-FE-57,,SIG) 2183700300003 2((27-CO-59(N,T)26-FE-57,,SIG)/ 2183700300004 (27-CO-59(N,2N)27-CO-58,,SIG)) 2183700300005 SAMPLE .3 99.99 PER CENT PURE COBALT SEGMENTS IN 2183700300006 A HALF-SPHERICAL GEOMETRY, PREPARED FROM FOILS 2183700300007 AND SHEETS, CUT AND PLACED TOGETHER. 2183700300008 WEIGHT ANGULAR RANGE NEUTRON ENERGY RANGE 2183700300009 ------ ------------- -------------------- 2183700300010 29.09 G 0-40 DEGREES 19.0 +/- 0.6 MEV 2183700300011 40.28 G 40-65 DEGREES 17.7 +/- 0.8 MEV 2183700300012 27.50 G 65-83 DEGREES 16.3 +/- 0.6 MEV 2183700300013 MONITOR 1(27-CO-59(N,2N)27-CO-58,,SIG) 2183700300014 TWO EXTERNAL MONITORS WERE ALSO USED - 2183700300015 1) A PROTON RECOIL COUNTER TO MEASURE THE 2183700300016 NEUTRON FLUX DIRECTLY 2183700300017 2) THE ACTIVITY INDUCED IN A PIECE OF COBALT 2183700300018 PLACED 25 CM FROM THE NEUTRON SOURCE IN THE 2183700300019 0 DEGREE DIRECTION. 2183700300020 THE RESULTS FROM THESE EXTERNAL MONITORS WERE 2183700300021 NOT VERY ACCURATE BECAUSE THE IRRADIATION 2183700300022 GEOMETRY WAS NOT WELL KNOWN. 2183700300023 STATUS .TABLE 1 OF THE REFERENCE. 2183700300024 HISTORY (830222C) A.P.T. 2183700300025 (830322E) 2183700300026 ENDBIB 24 0 2183700300027 NOCOMMON 0 0 2183700300028 DATA 6 3 2183700300029 EN EN-ERR DATA 1ERR-T 1DATA 2DATA-ERR 22183700300030 MEV MEV MB MB NO-DIM NO-DIM 2183700300031 1.6300E+01 6.0000E-01 8.6000E-01 8.0000E-02 1.0000E-03 6.0000E-052183700300032 1.7700E+01 8.0000E-01 1.2200E+00 1.1000E-01 1.4100E-03 8.0000E-052183700300033 1.9000E+01 6.0000E-01 1.6100E+00 1.5000E-01 1.9200E-03 1.1000E-042183700300034 ENDDATA 5 0 2183700300035 ENDSUBENT 34 0 2183700399999 SUBENT 21837004 19860609 00002183700400001 BIB 5 24 2183700400002 REACTION 1(41-NB-93(N,T)40-ZR-91,,SIG) 2183700400003 2((41-NB-93(N,T)40-ZR-91,,SIG)/ 2183700400004 (41-NB-93(N,2N)41-NB-92-M,,SIG)) 2183700400005 SAMPLE .3 99.99 PER CENT PURE NIOBIUM SEGMENTS IN 2183700400006 A HALF-SPHERICAL GEOMETRY, PREPARED FROM FOILS 2183700400007 AND SHEETS, CUT AND PLACED TOGETHER. 2183700400008 WEIGHT ANGULAR RANGE NEUTRON ENERGY RANGE 2183700400009 ------ ------------- -------------------- 2183700400010 28.05 G 0-40 DEGREES 19.0 +/- 0.6 MEV 2183700400011 39.49 G 40-65 DEGREES 17.7 +/- 0.8 MEV 2183700400012 28.15 G 65-83 DEGREES 16.3 +/- 0.6 MEV 2183700400013 MONITOR 1(41-NB-93(N,2N)41-NB-92-M,,SIG) 2183700400014 TWO EXTERNAL MONITORS WERE ALSO USED - 2183700400015 1) A PROTON RECOIL COUNTER TO MEASURE THE 2183700400016 NEUTRON FLUX DIRECTLY 2183700400017 2) THE ACTIVITY INDUCED IN A PIECE OF COBALT 2183700400018 PLACED 25 CM FROM THE NEUTRON SOURCE IN THE 2183700400019 0 DEGREE DIRECTION. 2183700400020 THE RESULTS FROM THESE EXTERNAL MONITORS WERE 2183700400021 NOT VERY ACCURATE BECAUSE THE IRRADIATION 2183700400022 GEOMETRY WAS NOT WELL KNOWN. 2183700400023 STATUS .TABLE 1 OF THE REFERENCE. 2183700400024 HISTORY (830222C) A.P.T. 2183700400025 (830322E) 2183700400026 ENDBIB 24 0 2183700400027 NOCOMMON 0 0 2183700400028 DATA 6 3 2183700400029 EN EN-ERR DATA 1ERR-T 1DATA 2DATA-ERR 22183700400030 MEV MEV MB MB NO-DIM NO-DIM 2183700400031 1.6300E+01 6.0000E-01 4.6000E-01 5.0000E-02 1.1600E-03 7.0000E-052183700400032 1.7700E+01 8.0000E-01 7.9000E-01 9.0000E-02 2.0500E-03 1.2000E-042183700400033 1.9000E+01 6.0000E-01 1.0800E+00 1.2000E-01 3.2100E-03 1.8000E-042183700400034 ENDDATA 5 0 2183700400035 ENDSUBENT 34 0 2183700499999 ENDENTRY 4 0 2183799999999