ENTRY 22123 19900823 00002212300000001 SUBENT 22123001 19900823 00002212300100001 BIB 14 53 2212300100002 REFERENCE (J,ANE,15,381,88) 2212300100003 TITLE -MEASUREMENT OF RESONANCE PARAMETERS OF 232-TH AND 2212300100004 THEIR INTEGRAL CHECK THROUGH THE RESONANCE INTEGRAL. 2212300100005 AUTHOR (K.KOBAYASHI,Y.FUJITA,I.KIMURA) 2212300100006 INSTITUTE (2JPNKTO) 2212300100007 FACILITY (LINAC) THE 46 MEV ELECTRON LINAC AT THE RESEARCH REAC-2212300100008 TOR INSTITUTE OF KYOTO UNIVERSITY, OPERATED AT A 2212300100009 FREQUENCY OF 240 - 250 PULSES/SEC AND WITH A PULSE 2212300100010 WIDTH OF 33 (HIGH ENERGY) - 100 (LOW ENERGY) NS, WAS 2212300100011 USED FOR THE MEASUREMENTS. 2212300100012 INC-SOURCE (PHOTO) BURSTS OF NEUTRONS WERE PRODUCED FROM THE 2212300100013 WATER-COOLED PHOTONEUTRON TARGET, WHICH WERE MADE OF 2212300100014 SEVERAL SHEETS OF TA PLATES, 5 CM BY 5 CM SQUARE WITH 2212300100015 AN EFFECTIVE TOTAL THICKNESS OF ABOUT 3.5 CM. THE TAR-2212300100016 GET WAS PLACED IN THE CENTER OF AN OCTAGONAL WATER 2212300100017 TANK, 30 CM IN DIAMETER AND 8 CM THICK, TO MODERATE 2212300100018 THE NEUTRON ENERGIES. A 7 CM DIAMETER BY 20 CM THICK 2212300100019 PB BLOCK WAS PLACED IN THE FLIGHT PATH TO SUPPRESS THE2212300100020 PROMPT GAMMA-FLASH. THE NEUTRONS WERE COLLIMATED TO A 2212300100021 4 CM DIAMETER AT THE SAMPLE POSITION BY B4C AND PB 2212300100022 COLLIMATORS. A 0.5 MM THICK CD FILTER WAS USED TO 2212300100023 SUPPRESS THERMAL NEUTRONS. 2212300100024 METHOD (TOF ) TIME-OF-FLIGHT TRANSMISSION MEASUREMENT WITH A 2212300100025 FLIGHT PATH OF 22.13 +/- 0.03 M. A 14 G/CM2 S FILTER 2212300100026 WAS USED TO REDUCE GAMMA-RAYS AND FAST NEUTRONS, WHILE2212300100027 5.7 MM OF PB, 3.0 MM OF MNO2, 1.0 MM OF CO, 0.5 MM OF 2212300100028 AG AND 0.5 MM OF CD WAS USED AS NOTCH FILTERS. THE 2212300100029 ENERGY SCALE WAS CALIBRATED BY USING A U FILTER AS A 2212300100030 STANDARD. 2212300100031 DETECTOR (GLASD) A 6-LITHIUM-LOADED GLASS SCINTILLATOR OF 12.7 2212300100032 CM DIAMETER BY 1.27 CM THICK, MOUNTED ON A PM-TUBE, 2212300100033 WAS USED AS NEUTRON DETECTOR. 2212300100034 .THE NEUTRON INTENSITY WAS MONITORED WITH A 1 MM THICK 2212300100035 6-LITHIUM GLASS DETECTOR. 2212300100036 SAMPLE .THREE TYPES OF METALLIC TH SAMPLES WITH A PURITY OF 2212300100037 99.7 PERCENT WERE USED, NAMELY /1/ 10 X 10 X 0.05 CM, 2212300100038 /2/ 8 X 8 X 0.1 CM, AND /3/ 5.08 X 5.08 X 0.32 CM. 2212300100039 FIVE KINDS OF SAMPLE THICKNESSES RANGING FROM 0.0015 2212300100040 TO 0.0277 ATOMS/BARN WERE USED FOR THE FIRST FOUR S- 2212300100041 WAVE RESONANCES, AND FOUR KINDS OF SAMPLE THICKNESSES 2212300100042 RANGING FROM 0.0277 TO 0.110 ATOMS/BARN WERE USED FOR 2212300100043 THE HIGHER ENERGY RESONANCES. 2212300100044 CORRECTION .THE DATA WERE CORRECTED FOR DEAD-TIME LOSSES AND BACK-2212300100045 GROUND. THE BACKGROUND WAS DETERMINED FROM THE BLACK 2212300100046 RESONANCES AND/OR NOTCH FILTERS OF CO, MN, AG AND CD. 2212300100047 ERR-ANALYS (DATA-ERR) THE ERRORS GIVEN CONTAIN BOTH STATISTICAL 2212300100048 AND SYSTEMATIC CONTRIBUTIONS. 2212300100049 ANALYSIS .MULTILEVEL BREIT-WIGNER ANALYSIS. 2212300100050 STATUS .DATA TAKEN FROM MAIN REF. 2212300100051 HISTORY (891031C) N.O. 2212300100052 (891211E) 2212300100053 (900823U) S.W. 2ND AUTHOR NAME CORRECTED. 2212300100054 (900917E) 2212300100055 ENDBIB 53 0 2212300100056 NOCOMMON 0 0 2212300100057 ENDSUBENT 56 0 2212300199999 SUBENT 22123002 19891211 00002212300200001 BIB 3 6 2212300200002 REACTION 1(90-TH-232(N,0),,EN) 2212300200003 2(90-TH-232(N,EL),,WID) 2212300200004 3(90-TH-232(N,G),,WID) 2212300200005 STATUS .DATA TAKEN FROM MAIN REF. 2212300200006 HISTORY (891031C) N.O. 2212300200007 (891211E) 2212300200008 ENDBIB 6 0 2212300200009 NOCOMMON 0 0 2212300200010 DATA 5 21 2212300200011 DATA 1DATA 2DATA-ERR 2DATA 3DATA-ERR 3 2212300200012 EV MILLI-EV MILLI-EV MILLI-EV MILLI-EV 2212300200013 2.1800E+01 2.0900E+00 3.0000E-02 2.5200E+01 7.0000E-01 2212300200014 2.3500E+01 3.8800E+00 1.8000E-01 2.6100E+01 1.4000E+00 2212300200015 5.9500E+01 3.8300E+00 2.1000E-01 2.5000E+01 2.1000E+00 2212300200016 6.9200E+01 4.2600E+01 1.3000E+00 2.2900E+01 1.3000E+00 2212300200017 1.1300E+02 1.3900E+01 1.3000E+00 2.0400E+01 2.9000E+00 2212300200018 1.2100E+02 2.4900E+01 9.0000E-01 2.6500E+01 2.9000E+00 2212300200019 1.2900E+02 3.3800E+00 7.5000E-01 2.9600E+01 9.5000E+00 2212300200020 1.5400E+02 2.0500E-01 4.4000E-02 2.3000E+01 7.9000E+00 2212300200021 1.7000E+02 6.1900E+01 2.8000E+00 2.2100E+01 5.8000E+00 2212300200022 1.9300E+02 1.7400E+01 1.8000E+00 2.2100E+01 4.3000E+00 2212300200023 1.9900E+02 1.0200E+01 1.5000E+00 2.3900E+01 9.3000E+00 2212300200024 2.2100E+02 2.6400E+01 3.3000E+00 2.5100E+01 7.3000E+00 2212300200025 2.5100E+02 2.9900E+01 3.9000E+00 2.5700E+01 9.4000E+00 2212300200026 2.6300E+02 2.2600E+01 4.0000E+00 2.4100E+01 1.0100E+01 2212300200027 2.8600E+02 2.9800E+01 5.0000E+00 2.2400E+01 9.5000E+00 2212300200028 3.0500E+02 2.3300E+01 4.5000E+00 2.5800E+01 9.8000E+00 2212300200029 3.2900E+02 7.3100E+01 9.6000E+00 2.7400E+01 1.1500E+01 2212300200030 3.4200E+02 3.5500E+01 7.0000E+00 2.6200E+01 9.5000E+00 2212300200031 3.6500E+02 2.3000E+01 9.3000E+00 2.2600E+01 1.2900E+01 2212300200032 3.6900E+02 2.4900E+01 1.0200E+01 2.5400E+01 1.2600E+01 2212300200033 4.0100E+02 1.2100E+01 5.2000E+00 2.6600E+01 1.8000E+01 2212300200034 ENDDATA 23 0 2212300200035 ENDSUBENT 34 0 2212300299999 SUBENT 22123003 19891211 00002212300300001 BIB 3 4 2212300300002 REACTION (90-TH-232(N,G),,WID,,AV) 2212300300003 STATUS .DATA TAKEN FROM MAIN REF. 2212300300004 HISTORY (891031C) N.O. 2212300300005 (891211E) 2212300300006 ENDBIB 4 0 2212300300007 NOCOMMON 0 0 2212300300008 DATA 4 1 2212300300009 EN-MIN EN-MAX MOMENTUM L DATA 2212300300010 EV EV NO-DIM MILLI-EV 2212300300011 2.1800E+01 4.0100E+02 0.0000E+00 2.4700E+01 2212300300012 ENDDATA 3 0 2212300300013 ENDSUBENT 12 0 2212300399999 ENDENTRY 3 0 2212399999999