ENTRY 20194 19831121 00002019400000001 SUBENT 20194001 19831121 00002019400100001 BIB 14 35 2019400100002 INSTITUTE (2SWDAE ) 2019400100003 REFERENCE (J,JNE,27,71,7302) 2019400100004 AUTHOR (J.HELLSTROEM) 2019400100005 TITLE -FAST NEUTRON RADIATIVE CAPTURE CROSS-SECTIONS FOR SOME2019400100006 IMPORTANT STANDARDS FROM 30 KEV TO 1.5 MEV.- 2019400100007 FACILITY (VDG ) 5.5 MV VAN DE GRAAFF AT STUDSVIK. 2019400100008 INC-SOURCE (P-LI7) PROTON-LITHIUM 7. 2019400100009 INC-SPECT .NEUTRON ENERGY RESOLUTIONS ARE 1 PERC. AT 30 KEV AND 2019400100010 7.5 PERC. AT 1.5 MEV. (= 4.5 NS/M) 2019400100011 SAMPLE .DISCS OF 5 CM DIA. AND 0.1 CM THICK. PURITY BETTER 2019400100012 THAN 99.9 PERCENT. 2019400100013 METHOD (TOF ) TIME OF FLIGHT, FLIGHT PATH APPROX. 1.5 M. 2019400100014 DETECTOR (STANK) LIQUID SCINTILLATOR TANK OF APPROXIMATELY 2019400100015 200 LITRE VOLUME. NE218 SCINTILLATOR. 2019400100016 INSIDE THE DETECTOR IS OPTICALLY DIVIDED INTO TWO 2019400100017 HALVES WHICH ARE IN COINCIDENCE. (TO IMPROVE SIGNAL TO2019400100018 NOISE RATIO) 2019400100019 (LONGC) LONG COUNTER FOR NEUTRON FLUX MEASUREMENT. 2019400100020 .NEUTRON ENERGY CALIBRATION OF THE SPECTRA WAS OBTAINED2019400100021 FROM KNOWN RESONANCES IN FLUORINE. 2019400100022 COMMENT .IT MUST BE EMPHASISED THAT CROSS-SECTIONS GIVEN IN 2019400100023 ABSOLUTE UNITS MUST BE CONSIDERED WITH CARE. BECAUSE, 2019400100024 EVEN THE STANDARD LIKE GOLD, AT 30KEV (AS ONE EXAMPLE)2019400100025 THE CROSS-SECTIONS AS 596 MB (KOMPE, NUCL.PHYS.A133 2019400100026 (1969)513) AND 515 MB (GIBBONS ET AL.,PHYS.REV.122 2019400100027 (1961)182) ARE PRESENTED. SO THE CROSS-SECTIONS FOR 2019400100028 MATERIALS MEASURED RELATIVE TO A STANDARD ARE STRONGLY2019400100029 DEPENDENT ON THE STANDARD USED. IT SEEMS RESONABLE 2019400100030 TO EXPRESS CROSS-SECTIONS IN TERMS OF RELATIVE 2019400100031 DIMENSION-LESS NUMBER. 2019400100032 STATUS .TAKEN FROM J.NUCL.EN.,27(1973)71. 2019400100033 HISTORY (730402C) 2019400100034 (740521E) 2019400100035 CORRECTION .NATURAL SELF SCREENING AND MULTIPLE SCATTERING 2019400100036 CORRECTIONS VARY BETWEEN 6 AND 9 PERCENT. 2019400100037 ENDBIB 35 0 2019400100038 NOCOMMON 0 0 2019400100039 ENDSUBENT 38 0 2019400199999 SUBENT 20194002 19831121 00002019400200001 BIB 4 11 2019400200002 REACTION ((47-AG-0(N,G),,SIG)/ 2019400200003 (79-AU-197(N,G)79-AU-198,,SIG)) 2019400200004 PART-DET (G ) GAMMAS. 2019400200005 HISTORY (730402C) 2019400200006 (740521E) 2019400200007 ERR-ANALYS .TOTAL ERRORS ARE GIVEN, STATISTICAL ERRORS ARE EVERY- 2019400200008 WHERE LESS THAN 2 PERCENT, THE REST COMES FROM 2019400200009 THE STANDARD. THE RATHER LARGE ERRORS IN THE GOLD 2019400200010 CROSS-SECTION IS PREDOMINANT. 2019400200011 .FROM 200 KEV TO 1.5 MEV, 2019400200012 ALL ERRORS ARE OF THE ORDER OF 10 +- 2 PERCENT. 2019400200013 ENDBIB 11 0 2019400200014 NOCOMMON 0 0 2019400200015 DATA 3 13 2019400200016 EN DATA DATA-ERR 2019400200017 MEV NO-DIM PER-CENT 2019400200018 4.0000E-02 2.1700E+00 1.7700E+01 2019400200019 6.0000E-02 2.0000E+00 1.4000E+01 2019400200020 8.0000E-02 1.8400E+00 1.3400E+01 2019400200021 1.0000E-01 1.7400E+00 1.3000E+01 2019400200022 1.2000E-01 1.8700E+00 1.2800E+01 2019400200023 1.3000E-01 2.0200E+00 1.2900E+01 2019400200024 1.7500E-01 1.7300E+00 1.8100E+01 2019400200025 2.0000E-01 1.8200E+00 1.0000E+01 2019400200026 4.0000E-01 1.7100E+00 1.0000E+01 2019400200027 6.0000E-01 1.5400E+00 1.0000E+01 2019400200028 8.0000E-01 1.6400E+00 1.0000E+01 2019400200029 1.0000E+00 1.5400E+00 1.0000E+01 2019400200030 1.5000E+00 1.3900E+00 1.0000E+01 2019400200031 ENDDATA 15 0 2019400200032 ENDSUBENT 31 0 2019400299999 SUBENT 20194003 19831121 00002019400300001 BIB 5 8 2019400300002 REACTION (47-AG-0(N,G),,SIG) 2019400300003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2019400300004 FROM VAUGHN, GRENCH, (LOCKHEED AIRCRAFT, 2019400300005 USA) PRIVATE COMMUNICATION (1971). 2019400300006 PART-DET (G ) GAMMAS. 2019400300007 HISTORY (730402C) 2019400300008 (740521E) 2019400300009 ERR-ANALYS .NOT GIVEN 2019400300010 ENDBIB 8 0 2019400300011 NOCOMMON 0 0 2019400300012 DATA 3 13 2019400300013 EN MONIT DATA 2019400300014 MEV B B 2019400300015 4.0000E-02 5.4300E-01 1.1780E+00 2019400300016 6.0000E-02 4.3300E-01 8.6600E-01 2019400300017 8.0000E-02 3.7600E-01 6.9200E-01 2019400300018 1.0000E-01 3.4100E-01 5.9300E-01 2019400300019 1.2000E-01 3.1800E-01 5.9500E-01 2019400300020 1.3000E-01 3.1000E-01 6.2600E-01 2019400300021 1.7500E-01 2.8300E-01 4.9000E-01 2019400300022 2.0000E-01 2.7100E-01 4.9300E-01 2019400300023 4.0000E-01 1.8200E-01 3.1100E-01 2019400300024 6.0000E-01 1.2000E-01 1.8500E-01 2019400300025 8.0000E-01 9.3000E-02 1.5400E-01 2019400300026 1.0000E+00 8.4000E-02 1.3000E-01 2019400300027 1.5000E+00 7.2000E-02 1.0100E-01 2019400300028 ENDDATA 15 0 2019400300029 ENDSUBENT 28 0 2019400399999 SUBENT 20194004 19831121 00002019400400001 BIB 4 11 2019400400002 REACTION ((49-IN-0(N,G),,SIG)/ 2019400400003 (79-AU-197(N,G)79-AU-198,,SIG)) 2019400400004 PART-DET (G ) GAMMAS. 2019400400005 HISTORY (730402C) 2019400400006 (740521E) 2019400400007 ERR-ANALYS .TOTAL ERRORS ARE GIVEN, STATISTICAL ERRORS ARE EVERY- 2019400400008 WHERE LESS THAN 2 PERCENT, THE REST COMES FROM 2019400400009 THE STANDARD. THE RATHER LARGE ERRORS IN THE GOLD 2019400400010 CROSS-SECTION IS PREDOMINANT. 2019400400011 .FROM 200 KEV TO 1.5 MEV, 2019400400012 ALL ERRORS ARE OF THE ORDER OF 10 +- 2 PERCENT. 2019400400013 ENDBIB 11 0 2019400400014 NOCOMMON 0 0 2019400400015 DATA 3 14 2019400400016 EN DATA DATA-ERR 2019400400017 MEV NO-DIM PER-CENT 2019400400018 3.0000E-02 1.3100E+00 1.3000E+01 2019400400019 4.0000E-02 1.5800E+00 1.9900E+01 2019400400020 6.0000E-02 1.5400E+00 1.5300E+01 2019400400021 8.0000E-02 1.4200E+00 1.3900E+01 2019400400022 1.0000E-01 1.3400E+00 1.3300E+01 2019400400023 1.2000E-01 1.3100E+00 1.3100E+01 2019400400024 1.3000E-01 1.2000E+00 1.3200E+01 2019400400025 1.7500E-01 1.3300E+00 2.0500E+01 2019400400026 2.0000E-01 1.3800E+00 1.0000E+01 2019400400027 4.0000E-01 1.7100E+00 1.0000E+01 2019400400028 6.0000E-01 2.6000E+00 1.0000E+01 2019400400029 8.0000E-01 3.7800E+00 1.0000E+01 2019400400030 1.0000E+00 4.1900E+00 1.0000E+01 2019400400031 1.5000E+00 3.5200E+00 1.0000E+01 2019400400032 ENDDATA 16 0 2019400400033 ENDSUBENT 32 0 2019400499999 SUBENT 20194005 19831121 00002019400500001 BIB 5 8 2019400500002 REACTION (49-IN-0(N,G),,SIG) 2019400500003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2019400500004 FROM VAUGHN, GRENCH, (LOCKHEED AIRCRAFT, 2019400500005 USA) PRIVATE COMMUNICATION (1971). 2019400500006 PART-DET (G ) GAMMAS. 2019400500007 HISTORY (730402C) 2019400500008 (740521E) 2019400500009 ERR-ANALYS .NOT GIVEN 2019400500010 ENDBIB 8 0 2019400500011 NOCOMMON 0 0 2019400500012 DATA 3 14 2019400500013 EN MONIT DATA 2019400500014 MEV B B 2019400500015 3.0000E-02 6.4900E-01 8.5000E-01 2019400500016 4.0000E-02 5.4300E-01 8.5800E-01 2019400500017 6.0000E-02 4.3300E-01 6.6700E-01 2019400500018 8.0000E-02 3.7600E-01 5.3400E-01 2019400500019 1.0000E-01 3.4100E-01 4.5700E-01 2019400500020 1.2000E-01 3.1800E-01 4.1700E-01 2019400500021 1.3000E-01 3.1000E-01 3.7200E-01 2019400500022 1.7500E-01 2.8300E-01 3.7600E-01 2019400500023 2.0000E-01 2.7100E-01 3.7400E-01 2019400500024 4.0000E-01 1.8200E-01 3.1100E-01 2019400500025 6.0000E-01 1.2000E-01 3.1200E-01 2019400500026 8.0000E-01 9.3000E-02 3.5400E-01 2019400500027 1.0000E+00 8.4000E-02 3.5400E-01 2019400500028 1.5000E+00 7.2000E-02 2.5700E-01 2019400500029 ENDDATA 16 0 2019400500030 ENDSUBENT 29 0 2019400599999 SUBENT 20194006 19831121 00002019400600001 BIB 4 11 2019400600002 REACTION ((73-TA-0(N,G),,SIG)/ 2019400600003 (79-AU-197(N,G)79-AU-198,,SIG)) 2019400600004 PART-DET (G ) GAMMAS. 2019400600005 HISTORY (730402C) 2019400600006 (740521E) 2019400600007 ERR-ANALYS .TOTAL ERRORS ARE GIVEN, STATISTICAL ERRORS ARE EVERY- 2019400600008 WHERE LESS THAN 2 PERCENT, THE REST COMES FROM 2019400600009 THE STANDARD. THE RATHER LARGE ERRORS IN THE GOLD 2019400600010 CROSS-SECTION IS PREDOMINANT. 2019400600011 .FROM 200 KEV TO 1.5 MEV, 2019400600012 ALL ERRORS ARE OF THE ORDER OF 10 +- 2 PERCENT. 2019400600013 ENDBIB 11 0 2019400600014 NOCOMMON 0 0 2019400600015 DATA 3 14 2019400600016 EN DATA DATA-ERR 2019400600017 MEV NO-DIM PER-CENT 2019400600018 3.0000E-02 1.2900E+00 1.3000E+01 2019400600019 4.0000E-02 1.3700E+00 1.9400E+01 2019400600020 6.0000E-02 1.3100E+00 1.5100E+01 2019400600021 8.0000E-02 1.2100E+00 1.3700E+01 2019400600022 1.0000E-01 1.1800E+00 1.3200E+01 2019400600023 1.2000E-01 1.2500E+00 1.2900E+01 2019400600024 1.3000E-01 1.2500E+00 1.3100E+01 2019400600025 1.7500E-01 1.0000E+00 2.2900E+01 2019400600026 2.0000E-01 9.6000E-01 1.0000E+01 2019400600027 4.0000E-01 9.4000E-01 1.0000E+01 2019400600028 6.0000E-01 1.3200E+00 1.0000E+01 2019400600029 8.0000E-01 1.5400E+00 1.0000E+01 2019400600030 1.0000E+00 1.5500E+00 1.0000E+01 2019400600031 1.5000E+00 1.5100E+00 1.0000E+01 2019400600032 ENDDATA 16 0 2019400600033 ENDSUBENT 32 0 2019400699999 SUBENT 20194007 19831121 00002019400700001 BIB 5 8 2019400700002 REACTION (73-TA-0(N,G),,SIG) 2019400700003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2019400700004 FROM VAUGHN, GRENCH, (LOCKHEED AIRCRAFT, 2019400700005 USA) PRIVATE COMMUNICATION (1971). 2019400700006 PART-DET (G ) GAMMAS. 2019400700007 HISTORY (730402C) 2019400700008 (740521E) 2019400700009 ERR-ANALYS .NOT GIVEN 2019400700010 ENDBIB 8 0 2019400700011 NOCOMMON 0 0 2019400700012 DATA 3 14 2019400700013 EN MONIT DATA 2019400700014 MEV B B 2019400700015 3.0000E-02 6.4900E-01 8.3700E-01 2019400700016 4.0000E-02 5.4300E-01 7.4400E-01 2019400700017 6.0000E-02 4.3300E-01 5.6700E-01 2019400700018 8.0000E-02 3.7600E-01 4.5500E-01 2019400700019 1.0000E-01 3.4100E-01 4.0200E-01 2019400700020 1.2000E-01 3.1800E-01 3.9600E-01 2019400700021 1.3000E-01 3.1000E-01 3.8800E-01 2019400700022 1.7500E-01 2.8300E-01 2.8300E-01 2019400700023 2.0000E-01 2.7100E-01 2.6000E-01 2019400700024 4.0000E-01 1.8200E-01 1.7100E-01 2019400700025 6.0000E-01 1.2000E-01 1.5800E-01 2019400700026 8.0000E-01 9.3000E-02 1.4400E-01 2019400700027 1.0000E+00 8.4000E-02 1.3100E-01 2019400700028 1.5000E+00 7.2000E-02 1.1000E-01 2019400700029 ENDDATA 16 0 2019400700030 ENDSUBENT 29 0 2019400799999 ENDENTRY 7 0 2019499999999