ENTRY 22266 19961023 00002226600000001 SUBENT 22266001 19961023 00002226600100001 BIB 16 61 2226600100002 INSTITUTE (2JPNTIT) 2226600100003 REFERENCE (J,NP/A,536,109,92) 2226600100004 AUTHOR (H.KITAZAWA,M.IGASHIRA,Y.ACHIHA,N.MUKAI,F.UESAWA, 2226600100005 T.ANDOH,S.SHIBATA) 2226600100006 TITLE -CORE POLARIZATION IN THE 203 KEV P-1/2-WAVE NEUTRON 2226600100007 RESONANCE CAPTURE BY S-32. 2226600100008 FACILITY (VDGT ) THE 3.2 MV PELLETRON ACCELERATOR AT THE TOKYO 2226600100009 INSTITUTE OF TECHNOLOGY. THE MACHINE IS PULSED WITH A 2226600100010 PULSE WIDTH OF 1.5 NS FWHM AND A REPETITION RATE OF 2226600100011 2 MHZ. THE AVERAGE BEAM CURRENT WAS 10 MICROAMPS. 2226600100012 INC-SOURCE (P-LI7) KEV NEUTRONS WERE PRODUCED BY BOMBARDING A 2226600100013 LITHIUM-EVAPORATED COPPER DISK WITH PROTONS FROM THE 2226600100014 PELLETRON. THE COPPER DISK WAS COOLED BY SPRAYING 2226600100015 WATER FROM THE OUTSIDE. 2226600100016 INC-SPECT .THE NEUTRON SPECTRUM WAS MEASURED BY TIME-OF-FLIGHT, 2226600100017 USING A LI-6 GLASS DETECTOR. 2226600100018 SAMPLE .THE TARGET CONSISTED OF A NATURAL SULFUR DISK WITH A 2226600100019 WEIGHT OF 57 GRAMS AND HAVING A DIAMETER OF 58 MM AND 2226600100020 A THICKNESS OF 11 MM. THE THICKNESS ALLOWED A NEUTRON 2226600100021 TRANSMISSION OF ABOUT 70 PERCENT AT THE RESONANCE. 2226600100022 .THE ABSOLUTE NUMBER OF SOURCE NEUTRONS WERE DETERMINED2226600100023 USING A GOLD SAMPLE. 2226600100024 METHOD (GSPEC) IN-BEAM GAMMA-RAY SPECTROSCOPY. 2226600100025 (TOF ) NEUTRON-GAMMA SEPARATION WAS OBTAINED WITH 2226600100026 TIME-OF-FLIGHT TECHNIQUES. 2226600100027 DETECTOR (GLASD) A 102 MM DIAMETER BY 6.4 MM THICK LI-6 GLASS 2226600100028 SCINTILLATOR, LOCATED AT 3 M FROM THE NEUTRON SOURCE 2226600100029 AND IN THE PROTON BEAM DIRECTION, WAS USED TO MEASURE 2226600100030 THE INCIDENT NEUTRON SPECTRUM. THE ENERGY DEPENDENCE 2226600100031 OF THE DETECTOR EFFICIENCY WAS CALCULATED USING A 2226600100032 MONTE CARLO METHOD. 2226600100033 (GLASD) A SECOND LI-6 GLASS DETECTOR, LOCATED AT AN 2226600100034 ANGLE OF 45 DEGREES TO THE PROTON BEAM DIRECTION, WAS 2226600100035 USED TO MONITOR THE NUMBER OF NEUTRONS EMITTED FROM 2226600100036 THE SOURCE. 2226600100037 (NAICR) CAPTURE GAMMA-RAYS WERE DETECTED WITH A NAI-TL 2226600100038 DETECTOR, 76 MM IN DIAMETER BY 152 MM LONG, CENTERED 2226600100039 IN A 254 MM DIAMETER BY 280 MM LONG NAI-TL HOLLOW 2226600100040 ANTI-COMPTON DETECTOR, SURROUNDED BY A HEAVY SHIELD. 2226600100041 THE DETECTOR WAS PLACED AT 80 CM FROM THE SAMPLE AND 2226600100042 AT 125 DEGREES TO THE PROTON BEAM DIRECTION. A LI-6- 2226600100043 HYDRIDE SHIELD WAS INSERTED IN THE COLLIMATOR. THE 2226600100044 RESPONSE FUNCTION OF THE DETECTOR WAS DETERMINED WITH 2226600100045 THE AID OF CALIBRATED RADIOACTIVE SOURCES, AN AM-BE 2226600100046 NEUTRON SOURCE AND A FEW NUCLEAR REACTIONS. THE OVER- 2226600100047 ALL TIME RESOLUTION FOR GAMMA-RAYS ABOVE 0.5 MEV WAS 2226600100048 3.8 NS FWHM. 2226600100049 PART-DET (G ) 2226600100050 MONITOR (79-AU-197(N,G)79-AU-198,PAR,DA) THE STANDARD AU-197 2226600100051 CAPTURE CROSS SECTION FROM ENDF/B-V WAS USED. 2226600100052 CORRECTION .CORRECTIONS WERE APPLIED FOR NEUTRON SELF-SHIELDING 2226600100053 AND NEUTRON MULTIPLE SCATTERING IN THE SAMPLES. 2226600100054 ERR-ANALYS (DATA-ERR) THE ERRORS GIVEN CONTAIN THE STAT. ERROR, 2226600100055 THE ERROR OF THE GAMMA-RAY SPECTROMETER EFFICIENCY, 2226600100056 THE ERROR OF THE TOTAL CAPTURE YIELD OF GOLD, AND THE 2226600100057 ERROR OF THE STANDARD CAPTURE CROSS SECTION OF AU-197.2226600100058 STATUS .DATA TAKEN FROM MAIN REF. 2226600100059 HISTORY (940106C) N.O. 2226600100060 (950420E) 2226600100061 (961023A) * * CORRECTED BY S. MAEV 2226600100062 SAN 001 - MONITOR CODE CORRECTED - 'T' IN SF4 DELETED 2226600100063 ENDBIB 61 0 2226600100064 NOCOMMON 0 0 2226600100065 ENDSUBENT 64 0 2226600199999 SUBENT 22266002 19961023 00002226600200001 BIB 4 7 2226600200002 REACTION (16-S-32(N,G),PAR,WID) 2226600200003 FLAG (1.) THE VALUE GIVEN AT 4.0 MEV IS THE SUM FOR THE 3.932226600200004 AND 4.05 LEVELS. 2226600200005 STATUS .DATA TAKEN FROM TABLE 2 OF MAIN REF. 2226600200006 HISTORY (940106C) N.O. 2226600200007 (950420E) 2226600200008 (961023A) DATA HEADING INTRODUCED INSTEAD OF 'E' 2226600200009 ENDBIB 7 0 2226600200010 COMMON 1 3 2226600200011 EN-RES 2226600200012 KEV 2226600200013 2.0300E+02 2226600200014 ENDCOMMON 3 0 2226600200015 DATA 5 4 2226600200016 E-LVL-FIN DATA DATA-MAX DATA-ERR FLAG 2226600200017 MEV EV EV EV NO-DIM 2226600200018 0.0000E+00 2.2000E-01 4.0000E-02 2226600200019 8.4000E-01 3.5000E-01 4.0000E-02 2226600200020 3.2200E+00 8.0000E-02 4.0000E-02 2226600200021 4.0000E+00 8.0000E-02 1.0000E+00 2226600200022 ENDDATA 6 0 2226600200023 ENDSUBENT 22 0 2226600299999 ENDENTRY 2 0 2226699999999