ENTRY 22229 19961206 00002222900000001 SUBENT 22229001 19961206 00002222900100001 BIB 15 52 2222900100002 INSTITUTE (2BLGLVN) 2222900100003 REFERENCE (J,FBS,8,1,90) 2222900100004 AUTHOR (P.WAUTERS,C.DUPONT,P.LELEUX,P.LIPNIK,P.MACQ,A.NINANE, 2222900100005 S.W.KITWANGA) 2222900100006 TITLE -TOTAL CROSS SECTION FOR THE H(N,D)G REACTION AT 39, 2222900100007 61, AND 76 MEV. 2222900100008 FACILITY (CYCLO) CYCLOTRON, GIVING 10 MICROAMPS OF PROTONS OF 2222900100009 42, 65 OR 80 MEV IN BEAM BURSTS OF 1 NS. 2222900100010 INC-SOURCE (P-LI7) 0.5 OR 1 CM THICK NATURAL LITHIUM TARGETS. THE 2222900100011 PROTON BEAM WAS BENT BY A MAGNET AND STOPPED IN A 2222900100012 WELL-SHIELDED GRAPHITE BLOCK. THE NEUTRON BEAM WAS 2222900100013 SHAPED BY A SYSTEM OF THREE IRON OR BRASS COLLIMATORS.2222900100014 THE FIRST WAS 1.6 M LONG WITH AN INITIAL DIAMETER OF 2222900100015 10 MM, THE SECOND WAS 60 CM LONG AND STARTED 4.7 M 2222900100016 FROM THE LI TARGET, AND HAD A FINAL DIAMETER OF 17.1 2222900100017 MM, THE THIRD WAS 80 CM LONG AND SERVED AS A HALO 2222900100018 COLLIMATOR. AT THE EXPERIMENTAL POSITION, 6.7 M FROM 2222900100019 THE LI TARGET, THE BEAM DIAMETER WAS 20 MM. 2222900100020 SAMPLE .A LIQUID HYDROGEN TARGET, LIMITED BY TWO 35 MM DIA- 2222900100021 METER BY 6 MICROMETER THICK ALUMINIZED MYLAR WINDOWS. 2222900100022 METHOD (TOF ) THE DEUTERONS, PRODUCED IN A NARROW FORWARD 2222900100023 (COINC) CONE, WERE DETECTED AND IDENTIFIED USING A 2222900100024 PLASTIC SCINTILLATOR TELESCOPE AND TIME-OF-FLIGHT 2222900100025 TECHNIQUES. 2222900100026 DETECTOR (SCIN ) CHARGED PARTICLES WERE DETECTED BY TWO NE102 2222900100027 PLASTIC SCINTILLATORS. THE FIRST, 0.2 MM THICK AND 16 2222900100028 CM IN DIAMETER, WITH A 3 CM HOLE IN ITS CENTER FOR 2222900100029 PASSAGE OF THE NEUTRON BEAM, WAS LOCATED AT 50 CM FROM2222900100030 THE HYDROGEN TARGET. THE SECOND, 1.5 CM THICK AND 2222900100031 68 X 64 CM2 IN AREA, WITH A 5 CM HOLE, WAS LOCATED AT 2222900100032 1.57 M FROM THE FIRST DETECTOR. A 0.1 MM THICK PLASTIC2222900100033 SCINTILLATOR, PLACED BEFORE THE HYDROGEN TARGET, 2222900100034 VETOED CHARGED PARTICLES CONTAMINATING THE BEAM. IN 2222900100035 ADDITION, A 12 X 3 CM2 AND 4 MM THICK PLASTIC SCIN- 2222900100036 TILLATOR WAS USED TO DETECT PROTONS SCATTERED AT 7 2222900100037 DEGREES LAB ANGLE. THE LATTER INFORMATION WAS USED 2222900100038 FOR CROSS SECTION NORMALIZATION. 2222900100039 PART-DET (D ) 2222900100040 MONITOR (1-H-1(N,SCT)1-H-1,,DA,P) DIFFERENTIAL N-P SCATTERING 2222900100041 CROSS SECTION AT 7 DEGREES LAB ANGLE. 2222900100042 CORRECTION .THE DATA WERE CORRECTED FOR BACKGROUND BY SUBTRACTING 2222900100043 EMPTY-TARGET RUNS. CORRECTIONS WERE ALSO APPLIED FOR 2222900100044 DEUTERON REACTIONS IN THE SECOND SCINTILLATOR AND FOR 2222900100045 THE DEUTERON LOSS THROUGH THE DETECTOR HOLES. 2222900100046 ERR-ANALYS (ERR-S ) ONLY STATISTICAL ERRORS. THE ADDITIONAL 2222900100047 NORMALIZATION UNCERTAINTY IS LESS THAN 5 PERCENT. 2222900100048 STATUS .DATA TAKEN FROM MAIN REF. 2222900100049 HISTORY (921219C) N.O. 2222900100050 (930329E) 2222900100051 (961206U) + + CORRECTED BY S.MAEV 2222900100052 MONITOR CODE CORRECTED (SF4 ADDED) 2222900100053 AND DATA-ERR REPLACED BY ERR-S + + 2222900100054 ENDBIB 52 0 2222900100055 NOCOMMON 0 0 2222900100056 ENDSUBENT 55 0 2222900199999 SUBENT 22229002 19930329 00002222900200001 BIB 3 5 2222900200002 REACTION (1-H-1(N,G)1-H-2,,SIG) 2222900200003 STATUS .DATA TAKEN FROM MAIN REF. 2222900200004 HISTORY (921219C) N.O. 2222900200005 (930329E) 2222900200006 (961206U) * * DATA-ERR REPLACED BY ERR-S 2222900200007 ENDBIB 5 0 2222900200008 NOCOMMON 0 0 2222900200009 DATA 5 3 2222900200010 EN EN-RSL-HW DATA ERR-S MONIT 2222900200011 MEV MEV MICRO-B MICRO-B MB/SR 2222900200012 3.8500E+01 1.9000E+00 2.0620E+01 3.9000E-01 2.2040E+01 2222900200013 6.0800E+01 2.5000E+00 1.6620E+01 2.0000E-01 1.5460E+01 2222900200014 7.6200E+01 2.1000E+00 1.4130E+01 1.9000E-01 1.3500E+01 2222900200015 ENDDATA 5 0 2222900200016 ENDSUBENT 15 0 2222900299999 ENDENTRY 2 0 2222999999999