ENTRY 21893 19840807 00002189300000001 SUBENT 21893001 19840807 00002189300100001 BIB 16 42 2189300100002 INSTITUTE (2SF OUL) 2189300100003 REFERENCE (J,NIM,171,281,80) 2189300100004 AUTHOR (R.VAENSKAE,R.RIEPPO) 2189300100005 TITLE -ON THE SIMULTANEOUS USE OF A GE(LI) SEMICONDUCTOR 2189300100006 AND A NAI(TL) SCINTILLATION DETECTOR IN NEUTRON 2189300100007 ACTIVATION CROSS SECTION MEASUREMENTS 2189300100008 FACILITY .NEUTRON GENERATOR 'SAMES'. ROTATING TRITIUM TARGET. 2189300100009 INC-SOURCE (D-T ) NEUTRON GENERATOR. 2189300100010 SAMPLE .POWDERED MANGANESE(MNO2) AND VANADIUM(V2O5) 2189300100011 OXIDES MIXED WITH ALUMINUM POWDER (AL), SEALED IN 2189300100012 SMALL POLYETHYLENE CONTAINERS, WITH THICKNESSES 2189300100013 BETWEEN 200 AND 400 MG/CM**2. 2189300100014 .ISOTOPIC ABUNDANCES OF TARGET ELEMENTS ARE 2189300100015 FOR V-51 SAMPLE 0.9976, FOR MN-55 SAMPLE 1.0 2189300100016 AND FOR AL-27 SAMPLE 1.0. 2189300100017 METHOD (ACTIV) NEUTRON ACTVATION. SIMULTANEOUS USE OF THE 2189300100018 DETECTORS TO MEASURE DECAY GAMMAS. 2189300100019 DETECTOR (GELI ) 120 CM**3, COAXIAL. 2189300100020 (NAICR) 4 INCH * 4 INCH FACE-TYPE SCINTILLATOR. 2189300100021 ANALYSIS .PHOTO-PEAK AREAS WERE ANALYSED ON SPECTRA 2189300100022 'SMOOTHED' WITH DIFFERENT CHANNEL SETTINGS (USUALLY 2189300100023 THREE). BACKGROUND INTENSITIES WERE EVALUATED BY THE 2189300100024 STRAIGHT BASE-LINE APPROXIMATION. 2189300100025 MONITOR (13-AL-27(N,P)12-MG-27,,SIG) 2189300100026 .CROSS SECTION DETERMINED TO (78+-3) MB WITH 2189300100027 REFERENCE TO THE (13-AL-27(N,A)11-NA-24-G,,SIG) CROSS 2189300100028 SECTION (115+-3) MB. 2189300100029 (13-AL-27(N,A)11-NA-24-G,,SIG) 2189300100030 DECAY-MON (12-MG-27,9.45MIN,DG,843.8,0.72,DG,1014.4,0.28) 2189300100031 (11-NA-24-G,15.03HR,DG,1368.5,0.9999,DG,2753.9,0.9990) 2189300100032 STATUS .DATA TAKEN FROM MAIN REFERENCE. 2189300100033 HISTORY (831110C) A.L. 2189300100034 (840202E) 2189300100035 CORRECTION .SPECIAL ATTENTION WAS GIVEN TO DETECTOR 2189300100036 EFFICIENCY CALIBRATION. 2189300100037 ERR-ANALYS (ERR-T) TOTAL ERROR INCLUDES UNCERTAINTIES IN 2189300100038 -THE STANDARD CROSS SECTIONS 2189300100039 -THE EFFICIENCY CALIBRATION 2189300100040 -THE INTENSITIES OF THE GAMMA RAYS 2189300100041 -THE PHOTO-PEAK INTENSITIES 2189300100042 .QUOTED ERROR ASSUMED AS THE MAXIMUM ERROR IN 2189300100043 INDIVIDUAL MEASUREMENTS. 2189300100044 ENDBIB 42 0 2189300100045 COMMON 6 3 2189300100046 EN EN-RSL MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 2189300100047 MEV MEV MB MB MB MB 2189300100048 1.4700E+01 3.0000E-01 7.8000E+01 3.0000E+00 1.1500E+02 3.0000E+002189300100049 ENDCOMMON 3 0 2189300100050 ENDSUBENT 49 0 2189300199999 SUBENT 21893002 19840202 00002189300200001 BIB 5 7 2189300200002 REACTION (23-V-51(N,P)22-TI-51,,SIG) 2189300200003 DECAY-DATA (22-TI-51,5.80MIN,DG,319.8,0.90,DG,928.5,0.06) 2189300200004 FLAG (1.) GE(LI) DETECTOR. 2189300200005 (2.) NAI(TL) DETECTOR. 2189300200006 STATUS .DATA TAKEN FROM TABLE 4 IN MAIN REFERENCE. 2189300200007 HISTORY (831110C) A.L. 2189300200008 (840202E) 2189300200009 ENDBIB 7 0 2189300200010 NOCOMMON 0 0 2189300200011 DATA 3 2 2189300200012 DATA ERR-T FLAG 2189300200013 MB MB NO-DIM 2189300200014 3.8000E+01 5.0000E+00 1.0000E+00 2189300200015 4.3000E+01 5.0000E+00 2.0000E+00 2189300200016 ENDDATA 4 0 2189300200017 ENDSUBENT 16 0 2189300299999 SUBENT 21893003 19840202 00002189300300001 BIB 5 7 2189300300002 REACTION (25-MN-55(N,A)23-V-52,,SIG) 2189300300003 DECAY-DATA (23-V-52,3.76MIN,DG,1433.9,1.0) 2189300300004 FLAG (1.) GE(LI) DETECTOR. 2189300300005 (2.) NAI(TL) DETECTOR. 2189300300006 STATUS .DATA TAKEN FROM TABLE 4 IN MAIN REFERENCE. 2189300300007 HISTORY (831110C) A.L. 2189300300008 (840202E) 2189300300009 ENDBIB 7 0 2189300300010 NOCOMMON 0 0 2189300300011 DATA 3 2 2189300300012 DATA ERR-T FLAG 2189300300013 MB MB NO-DIM 2189300300014 2.5000E+01 4.0000E+00 1.0000E+00 2189300300015 3.0000E+01 4.0000E+00 2.0000E+00 2189300300016 ENDDATA 4 0 2189300300017 ENDSUBENT 16 0 2189300399999 ENDENTRY 3 0 2189399999999