ENTRY 22096 19890530 00002209600000001 SUBENT 22096001 19890530 00002209600100001 BIB 14 72 2209600100002 REFERENCE (C,88MITO,275,88) 2209600100003 TITLE -DIFFERENTIAL CROSS SECTIONS FOR GAMMA-RAY PRODUCTION 2209600100004 BY 14 MEV NEUTRONS WITH SEVERAL ELEMENTS IN STRUCTURAL2209600100005 MATERIALS. 2209600100006 AUTHOR (I.MURATA,J.YAMAMOTO,A.TAKAHASHI) 2209600100007 INSTITUTE (2JPNOSA) 2209600100008 FACILITY (CCW) OKTAVIAN PULSED 14 MEV NEUTRON SOURCE FACILITY OF2209600100009 OSAKA UNIVERSITY. THE PULSE WIDTH WAS 3 NSEC AND THE 2209600100010 REPETITION RATE WAS 2 MHZ. 2209600100011 INC-SOURCE (D-T) 1.0E+03 NEUTRONS/PULSE WERE PRODUCED BY BOMBAR- 2209600100012 DING A 10 CI TITANIUM-TRITIUM TARGET WITH DEUTERONS OF2209600100013 243 KEV. 2209600100014 METHOD (TOF) TIME-OF-FLIGHT TECHNIQUES WERE USED TO REDUCE THE2209600100015 BACKGROUND OF SCATTERED NEUTRONS FROM THE SAMPLE, 2209600100016 ROOM-RETURNED NEUTRONS AND GAMMA-RAYS. 2209600100017 DETECTOR (GE-IN) A 180 CM3 GERMANIUM DETECTOR WAS USED TO MEA- 2209600100018 SURE DISCRETE GAMMA-RAYS BETWEEN 500 AND 3000 KEV. THE2209600100019 DETECTOR WAS PLACED IN A SHIELD OF LEAD, PARAFFIN, 2209600100020 CONCRETE ETC. AT A DISTANCE OF 150 CM FROM THE SAMPLE.2209600100021 THE DISTANCE FROM THE TARGET TO THE SAMPLES WAS 20 CM.2209600100022 SEVEN ANGLES FROM 30 TO 150 DEGREES IN THE LAB SYSTEM 2209600100023 BETWEEN THE INCIDENT NEUTRONS AND THE EMITTED GAMMA- 2209600100024 RAYS WERE MEASURED. THE DETECTOR EFFICIENCY WAS DETER-2209600100025 MINED USING SOURCES OF CS-137, CO-60, NA-22, NA-24, 2209600100026 MN-56 AND NI-57. 2209600100027 (NAICR) A SODIUM-IODODE CRYSTAL OF 12.7 CM DIAMETER AND2209600100028 12.7 CM IN LENGTH WAS USED TO MEASURE THE ENERGY DIS- 2209600100029 TRIBUTIONS OF GAMMA-RAYS FROM 0.7 TO 10 MEV. THE DE- 2209600100030 TECTOR WAS PLACED IN A HEAVY SHIELDING WITH A FLIGHT 2209600100031 PATH OF 316 CM FROM THE SAMPLE. MEASUREMENTS WERE MADE2209600100032 AT 45 AND 125 OR 135 DEGREES. UNFOLDING OF THE SPECTRA2209600100033 WAS PERFORMED USING CALCULATED RESPONSE FUNCTIONS WITH2209600100034 THE COMPUTER CODE FERDOR. 2209600100035 (SCIN) A NE 213 LIQUID SCINTILLATION DETECTOR, LOCATED 2209600100036 AT A DISTANCE OF 4 M FROM THE NEUTRON SOURCE IN THE 2209600100037 DEUTERON BEAM DIRECTION, OPERATING IN TIME-OF-FLIGHT 2209600100038 MODE WITH NEUTRON-GAMMA DISCRIMINATION, WAS USED TO 2209600100039 MONITOR THE RELATIVE NEUTRON YIELD. ABSOLUTE CALIBRA- 2209600100040 TION OF THIS DETECTOR WAS MADE BY MEASURING THE IN- 2209600100041 DUCED ACTIVITIES IN IRRADIATED ALUMINUM AND NIOBIUM 2209600100042 FOILS. 2209600100043 SAMPLE .THE SAMPLES WERE THE NATURAL ELEMENTS CARBON, ALUMI- 2209600100044 NUM, SILICON, CHROMIUM, IRON, NICKEL, COPPER AND 2209600100045 MOLYBDENUM. 2209600100046 .FOR THE DISCRETE GAMMA-RAY MEASUREMENTS THE SAMPLES 2209600100047 WERE HOLLOW CYLINDERS OF 30 MM O.D. X 26 MM I.D. X 2209600100048 70 MM LONG. FOR AL, THE WALL THICKNESS WAS 5 MM. THE 2209600100049 SI SAMPLE WAS A 25 MM DIAMETER X 50 MM LONG CYLINDER. 2209600100050 THE C SAMPLE WAS A HOLLOW CYLINDER OF 40 MM O.D. X 2209600100051 15 MM I.D. X 50 MM LONG. 2209600100052 .FOR THE ENERGY DISTRIBUTION MEASUREMENTS THE SAMPLES 2209600100053 WERE PURE ELEMENTAL DISCS OF 10 CM DIAMTER AND 5 MM 2209600100054 THICK, EXCEPT FOR THE SI AND FE SAMPLES. 2209600100055 CORRECTION .DATA WERE CORRECTED FOR THE NEUTRON SPECTRUM, NEUTRON 2209600100056 MULTIPLE SCATTERING AND ATTENUATION IN THE SAMPLE AND 2209600100057 FOR GAMMA-RAY ATTENUATION. 2209600100058 ERR-ANALYS (DATA-ERR) THE TOTAL ERRORS WERE COMPOSED OF THE 2209600100059 FOLLOWING CONTRIBUTIONS. STATISTICAL ERRORS FOR INDI- 2209600100060 VIDUAL DISCRETE GAMMA-RAY PEAKS, 1 TO 7 PERCENT. UN- 2209600100061 CERTAINTIES IN THE PEAK EFFICIENCIES OF THE GE DETEC- 2209600100062 TOR, 4.5 PERCENT BELOW 1.3 MEV AND 6.0 PERCENT ABOVE. 2209600100063 THE ERRORS IN THE NEUTRON FLUX DETERMINATION WERE 7 2209600100064 TO 10 PERCENT. IN THE CASE OF THE NAI MEASUREMENTS, 2209600100065 ERRORS ACCORDING TO THE UNFOLDING ARE ALSO INCLUDED. 2209600100066 ANALYSIS .ANGLE-INTEGRATED CROSS SECTIONS FOR THE DISCRETE 2209600100067 GAMMA-RAYS WERE OBTAINED BY LEGENDRE POLYNOMIAL 2209600100068 FITTING. 2209600100069 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600100070 HISTORY (881209C) N.O. 2209600100071 (881216E) 2209600100072 (890530U) IF. PAGE OF REFERENCE ADDED 2209600100073 (890919E) 2209600100074 ENDBIB 72 0 2209600100075 COMMON 2 3 2209600100076 EN EN-RSL 2209600100077 MEV MEV 2209600100078 1.4100E+01 1.7000E-01 2209600100079 ENDCOMMON 3 0 2209600100080 ENDSUBENT 79 0 2209600199999 SUBENT 22096002 19881216 00002209600200001 BIB 3 4 2209600200002 REACTION (13-AL-27(N,X)0-G-0,PAR,SIG) 2209600200003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600200004 HISTORY (881209C) N.O. 2209600200005 (881216E) 2209600200006 ENDBIB 4 0 2209600200007 NOCOMMON 0 0 2209600200008 DATA 4 1 2209600200009 E-MIN E-MAX DATA DATA-ERR 2209600200010 MEV MEV B B 2209600200011 7.0000E-01 1.0000E+01 1.2200E+00 5.0000E-02 2209600200012 ENDDATA 3 0 2209600200013 ENDSUBENT 12 0 2209600299999 SUBENT 22096003 19881216 00002209600300001 BIB 3 4 2209600300002 REACTION (14-SI-0(N,X)0-G-0,PAR,SIG) 2209600300003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600300004 HISTORY (881209C) N.O. 2209600300005 (881216E) 2209600300006 ENDBIB 4 0 2209600300007 NOCOMMON 0 0 2209600300008 DATA 4 1 2209600300009 E-MIN E-MAX DATA DATA-ERR 2209600300010 MEV MEV B B 2209600300011 7.0000E-01 1.0000E+01 1.5300E+00 6.0000E-02 2209600300012 ENDDATA 3 0 2209600300013 ENDSUBENT 12 0 2209600399999 SUBENT 22096004 19881216 00002209600400001 BIB 3 4 2209600400002 REACTION (24-CR-0(N,X)0-G-0,PAR,SIG) 2209600400003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600400004 HISTORY (881209C) N.O. 2209600400005 (881216E) 2209600400006 ENDBIB 4 0 2209600400007 NOCOMMON 0 0 2209600400008 DATA 4 1 2209600400009 E-MIN E-MAX DATA DATA-ERR 2209600400010 MEV MEV B B 2209600400011 7.0000E-01 1.0000E+01 2.2700E+00 9.0000E-02 2209600400012 ENDDATA 3 0 2209600400013 ENDSUBENT 12 0 2209600499999 SUBENT 22096005 19881216 00002209600500001 BIB 3 4 2209600500002 REACTION (26-FE-0(N,X)0-G-0,PAR,SIG) 2209600500003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600500004 HISTORY (881209C) N.O. 2209600500005 (881216E) 2209600500006 ENDBIB 4 0 2209600500007 NOCOMMON 0 0 2209600500008 DATA 4 1 2209600500009 E-MIN E-MAX DATA DATA-ERR 2209600500010 MEV MEV B B 2209600500011 7.0000E-01 1.0000E+01 2.0700E+00 9.0000E-02 2209600500012 ENDDATA 3 0 2209600500013 ENDSUBENT 12 0 2209600599999 SUBENT 22096006 19881216 00002209600600001 BIB 3 4 2209600600002 REACTION (28-NI-0(N,X)0-G-0,PAR,SIG) 2209600600003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600600004 HISTORY (881209C) N.O. 2209600600005 (881216E) 2209600600006 ENDBIB 4 0 2209600600007 NOCOMMON 0 0 2209600600008 DATA 4 1 2209600600009 E-MIN E-MAX DATA DATA-ERR 2209600600010 MEV MEV B B 2209600600011 7.0000E-01 1.0000E+01 2.2400E+00 1.0000E-01 2209600600012 ENDDATA 3 0 2209600600013 ENDSUBENT 12 0 2209600699999 SUBENT 22096007 19881216 00002209600700001 BIB 3 4 2209600700002 REACTION (29-CU-0(N,X)0-G-0,PAR,SIG) 2209600700003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600700004 HISTORY (881209C) N.O. 2209600700005 (881216E) 2209600700006 ENDBIB 4 0 2209600700007 NOCOMMON 0 0 2209600700008 DATA 4 1 2209600700009 E-MIN E-MAX DATA DATA-ERR 2209600700010 MEV MEV B B 2209600700011 7.0000E-01 1.0000E+01 2.1200E+00 9.0000E-02 2209600700012 ENDDATA 3 0 2209600700013 ENDSUBENT 12 0 2209600799999 SUBENT 22096008 19881216 00002209600800001 BIB 3 4 2209600800002 REACTION (42-MO-0(N,X)0-G-0,PAR,SIG) 2209600800003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600800004 HISTORY (881209C) N.O. 2209600800005 (881216E) 2209600800006 ENDBIB 4 0 2209600800007 NOCOMMON 0 0 2209600800008 DATA 4 1 2209600800009 E-MIN E-MAX DATA DATA-ERR 2209600800010 MEV MEV B B 2209600800011 7.0000E-01 1.0000E+01 3.3700E+00 1.4000E-01 2209600800012 ENDDATA 3 0 2209600800013 ENDSUBENT 12 0 2209600899999 SUBENT 22096009 19881216 00002209600900001 BIB 3 4 2209600900002 REACTION (6-C-12(N,INL)6-C-12,PAR,SIG,G) 2209600900003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209600900004 HISTORY (881209C) N.O. 2209600900005 (881216E) 2209600900006 ENDBIB 4 0 2209600900007 NOCOMMON 0 0 2209600900008 DATA 3 1 2209600900009 E DATA DATA-ERR 2209600900010 MEV MB MB 2209600900011 4.4390E+00 1.8000E+02 7.0000E+00 2209600900012 ENDDATA 3 0 2209600900013 ENDSUBENT 12 0 2209600999999 SUBENT 22096010 19881216 00002209601000001 BIB 3 4 2209601000002 REACTION (13-AL-27(N,INL)13-AL-27,PAR,SIG,G) 2209601000003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209601000004 HISTORY (881209C) N.O. 2209601000005 (881216E) 2209601000006 ENDBIB 4 0 2209601000007 NOCOMMON 0 0 2209601000008 DATA 3 3 2209601000009 E DATA DATA-ERR 2209601000010 MEV MB MB 2209601000011 8.4400E-01 2.6000E+01 2.0000E+00 2209601000012 1.0140E+00 6.0000E+01 5.0000E+00 2209601000013 3.0030E+00 8.8000E+01 8.0000E+00 2209601000014 ENDDATA 5 0 2209601000015 ENDSUBENT 14 0 2209601099999 SUBENT 22096011 19881216 00002209601100001 BIB 3 4 2209601100002 REACTION (13-AL-27(N,P)12-MG-27,PAR,SIG,G) 2209601100003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209601100004 HISTORY (881209C) N.O. 2209601100005 (881216E) 2209601100006 ENDBIB 4 0 2209601100007 NOCOMMON 0 0 2209601100008 DATA 3 3 2209601100009 E DATA DATA-ERR 2209601100010 MEV MB MB 2209601100011 9.5500E-01 1.5000E+01 2.0000E+00 2209601100012 9.8500E-01 2.4000E+01 2.0000E+00 2209601100013 1.6980E+00 2.6000E+01 3.0000E+00 2209601100014 ENDDATA 5 0 2209601100015 ENDSUBENT 14 0 2209601199999 SUBENT 22096012 19881216 00002209601200001 BIB 3 4 2209601200002 REACTION (13-AL-27(N,N+P)12-MG-26,PAR,SIG,G) 2209601200003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209601200004 HISTORY (881209C) N.O. 2209601200005 (881216E) 2209601200006 ENDBIB 4 0 2209601200007 NOCOMMON 0 0 2209601200008 DATA 3 1 2209601200009 E DATA DATA-ERR 2209601200010 MEV MB MB 2209601200011 1.8080E+00 1.4200E+02 1.2000E+01 2209601200012 ENDDATA 3 0 2209601200013 ENDSUBENT 12 0 2209601299999 SUBENT 22096013 19881216 00002209601300001 BIB 3 4 2209601300002 REACTION (14-SI-28(N,INL)14-SI-28,PAR,SIG,G) 2209601300003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209601300004 HISTORY (881209C) N.O. 2209601300005 (881216E) 2209601300006 ENDBIB 4 0 2209601300007 NOCOMMON 0 0 2209601300008 DATA 3 2 2209601300009 E DATA DATA-ERR 2209601300010 MEV MB MB 2209601300011 1.7760E+00 3.1000E+02 2.5000E+01 2209601300012 2.8310E+00 4.8000E+01 5.0000E+00 2209601300013 ENDDATA 4 0 2209601300014 ENDSUBENT 13 0 2209601399999 SUBENT 22096014 19881216 00002209601400001 BIB 3 4 2209601400002 REACTION (14-SI-28(N,P)13-AL-28,PAR,SIG,G) 2209601400003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209601400004 HISTORY (881209C) N.O. 2209601400005 (881216E) 2209601400006 ENDBIB 4 0 2209601400007 NOCOMMON 0 0 2209601400008 DATA 3 2 2209601400009 E DATA DATA-ERR 2209601400010 MEV MB MB 2209601400011 9.4100E-01 9.0000E+00 1.0000E+00 2209601400012 9.7400E-01 2.4000E+01 2.0000E+00 2209601400013 ENDDATA 4 0 2209601400014 ENDSUBENT 13 0 2209601499999 SUBENT 22096015 19881216 00002209601500001 BIB 3 4 2209601500002 REACTION (14-SI-28(N,A)12-MG-25,PAR,SIG,G) 2209601500003 STATUS .DATA WERE OBTAINED FROM THE MAIN REF. 2209601500004 HISTORY (881209C) N.O. 2209601500005 (881216E) 2209601500006 ENDBIB 4 0 2209601500007 NOCOMMON 0 0 2209601500008 DATA 3 1 2209601500009 E DATA DATA-ERR 2209601500010 MEV MB MB 2209601500011 5.8500E-01 3.6000E+01 3.0000E+00 2209601500012 ENDDATA 3 0 2209601500013 ENDSUBENT 12 0 2209601599999 ENDENTRY 15 0 2209699999999