ENTRY 22265 19961031 00002226500000001 SUBENT 22265001 19961031 00002226500100001 BIB 16 91 2226500100002 INSTITUTE (2SWTPSI) EXPERIMENTAL SITE. 2226500100003 (2SWTETH) S.K., W.H., J.L., R.M. 2226500100004 (3POLUJK) J.B., K.B., L.J., B.K., A.S. 2226500100005 (2GERBOC) B.D., J.K., W.L., H.R., G.S., M.STEINKE, 2226500100006 M.STEPHAN, D.K., H.W., T.C., W.G., J.G. 2226500100007 (2SWTBAS) R.H. 2226500100008 REFERENCE (J,NP/A,548,49,92) 2226500100009 AUTHOR (S.KISTRYN,W.HAJDAS,J.LANG,R.MULLER,J.BALEWSKI,K.BODEK,2226500100010 L.JARCZYK,B.KAMYS,A.STRZALKOWSKI,B.DECHANT,J.KRUG, 2226500100011 W.LUBCKE,H.RUHL,G.SPANGARDT,M.STEINKE,M.STEPHAN, 2226500100012 D.KAMKE,R.HENNECK,H.WITALA,T.CORNELIUS,W.GLOCKLE, 2226500100013 J.GOLAK) 2226500100014 TITLE -ANALYZING POWER OF THE D(N,NP)N BREAKUP REACTION AT 2226500100015 67 MEV IN SELECTED KINEMATICAL CONFIGURATIONS. 2226500100016 FACILITY (CYCLO,2SWTPSI) 72 MEV INJECTOR CYCLOTRON AT PSI, 2226500100017 VILLIGEN. 2226500100018 INC-SOURCE (P-D ) POLARIZED NEUTRONS WERE PRODUCED WITH THE 2226500100019 (POLNS) D(P,N)PP REACTION BY BOMBARDING A LIQUID 2226500100020 DEUTERIUM TARGET WITH A 1 MICROAMP PULSED BEAM OF 2226500100021 POLARIZED PROTONS. THE NEUTRONS WERE EXTRACTED AT ZERO2226500100022 DEGREES THROUGH A COLLIMATOR HAVING AN OPENING ANGLE 2226500100023 OF 0.3 DEGREES. THE NEUTRON INTENSITY WAS ABOUT 2226500100024 5.0E+05 NEUTRONS/SEC. THE NEUTRON POLARIZATION WAS 2226500100025 ABOUT 0.36, AND WAS REVERSED EVERY 4 SECONDS. 2226500100026 INC-SPECT .AT ZERO DEGREES THE NEUTRON BEAM WAS QUASI-MONOENER- 2226500100027 GETIC WITH A FWHM OF ABOUT 3 MEV CENTERED AT 67 MEV. 2226500100028 SAMPLE .THE TARGET SCATTERER WAS PLACED AT 4.8 M DISTANCE FROM2226500100029 THE NEUTRON SOURCE. IT CONSISTED OF THE LIQUID SCIN- 2226500100030 TILLATOR NE213, CONTAINED IN A GLASS CYLINDER OF 4.9 2226500100031 CM DIAMETER AND 6.0 CM HEIGHT WITH ITS AXIS ORIENTED 2226500100032 VERTICALLY. MEASUREMENTS WERE PERFORMED WITH A FULLY 2226500100033 DEUTERATED SCATTERER. FOR CALIBRATION AND BACKGROUND 2226500100034 STUDIES, ORDINARY NE213 AND PARTIALLY DEUTERATED NE2132226500100035 SCATTERERS WERE ALSO USED. 2226500100036 METHOD (TOF ) THE NEUTRON BEAM SPECTRUM WAS DETERMINED BY 2226500100037 TIME-OF-FLIGHT BETWEEN THE TARGET SCATTERER AND THE 2226500100038 CYCLOTRON RF. THE LOW-ENERGY TAIL WAS CUT BY APPLYING 2226500100039 A SOFTWARE GATE OF 3.6 MEV SURROUNDING THE PEAK AT 2226500100040 67 MEV. THE ENERGY OF THE NEUTRONS WAS DETERMINED BY 2226500100041 THE TIME-OF-FLIGHT BETWEEN THE TARGET SCATTERER AND 2226500100042 THE NEUTRON DETECTORS. 2226500100043 (PSD ) PULSE-SHAPE DISCRIMINATION WAS USED FOR PAR- 2226500100044 TICLE IDENTIFICATION IN THE TARGET SCATTERER AND TO 2226500100045 REJECT GAMMA-RAY EVENTS IN THE NEUTRON DETECTORS. 2226500100046 (COINC) A CONICIDENCE BETWEEN THE TARGET SCATTERER AND 2226500100047 ONE OF THE NEUTRON DETECTORS WAS REQUIRED FOR A VALID 2226500100048 EVENT. 2226500100049 .BY MEASURING THE ENERGY OF THE PROTON AND THE ENERGY 2226500100050 AND DIRECTION OF ONE OF THE NEUTRONS, THE MEASUREMENT 2226500100051 IS KINEMATICALLY COMPLETE IN THE LIMIT OF N-P QUASI- 2226500100052 FREE SCATTERING AND N-P FINAL-STATE INTERACTION. 2226500100053 DETECTOR (SCIN ) THE ACTIVE TARGET WAS AN NE213 SCINTILLATION 2226500100054 DETECTOR. IT SUPPLIED INFORMATION ON THE ENERGY OF 2226500100055 THE CHARGED REACTION PRODUCT, PARTICLE IDENTIFICATION 2226500100056 BASED ON PULSE-SHAPE DISCRIMINATION, AND THE NEUTRON 2226500100057 BEAM ENERGY SPECTRUM VIA TIME-OF-FLIGHT VERSUS THE 2226500100058 CYCLOTRON RF-SIGNAL. 2226500100059 (SCIN ) THE NEUTRONS WERE DETECTED WITH EIGHT CYLINDRI-2226500100060 CAL NE213 SCINTILLATION DETECTORS, POSITIONED IN FOUR 2226500100061 SYMMETRICAL PAIRS ON BOTH SIDES OF THE BEAM. DETECTORS2226500100062 OF 14 CM DIAMETER AND 6 CM THICKNESS WERE USED AT 2226500100063 SMALL ANGLES, AND OF 10 CM DIAMETER AND 7.5 CM THICK- 2226500100064 NESS AT LARGE ANGLES. THE FLIGHT PATH VARIED FROM 3.0 2226500100065 M AT 20 DEGREES TO 1.0 M AT 150 DEGREES. THE ANGULAR 2226500100066 RESOLUTION RANGED BETWEEN 1.3 AND 2.8 DEGREES. NEUTRON2226500100067 ENERGIES WERE DETERMINED BY TIME-OF-FLIGHT, AND THE 2226500100068 ENERGY RESOLUTION WAS AROUND 1.5 MEV. PULSE-SHAPE 2226500100069 DISCRIMINATION WAS USED TO REJECT GAMMA-RAY EVENTS IN 2226500100070 THE DETECTORS. 2226500100071 .THE GAINS OF ALL SCINTILLATION DETECTORS WERE STABI- 2226500100072 LIZED USING LIGHT-EMITTING DIODES. 2226500100073 .THE PROTON BEAM INTENSITY AND POLARIZATION WAS MONI- 2226500100074 TORED CONTINUOUSLY IN A PROTON-TRANSMISSION POLARI- 2226500100075 METER BY MEASURING THE PROTONS ELASTICALLY SCATTERED 2226500100076 ON A THIN CARBON FOIL. 2226500100077 PART-DET (P ) 2226500100078 (N ) 2226500100079 ANALYSIS .THE REGIONS OF N-P QUASI-FREE SCATTERING AND N-P 2226500100080 FINAL-STATE INTERACTION WAS DETERMINED BY APPLYING 2226500100081 5 MEV WIDE QUADRATIC SOFTWARE GATES IN THE NEUTRON- 2226500100082 ENERGY VERSUS PROTON-ENERGY PLOT. 2226500100083 CORRECTION .THE DATA WERE CORRECTED FOR BACKGROUND, MAINLY FROM 2226500100084 BREAKUP OF CARBON, USING A SUBTRACTION TECHNIQUE. 2226500100085 ERR-ANALYS (DATA-ERR) THE DOMINATING CONTRIBUTION TO THE GIVEN 2226500100086 ERRORS IS THE STATISTICAL UNCERTAINTIES. 2226500100087 (ERR-1) IN ADDITION, THERE IS A 4 PERCENT NORMALIZATION2226500100088 UNCERTAINTY DUE TO THE NEUTRON POLARIZATION. 2226500100089 STATUS .DATA TAKEN FROM MAIN REF. 2226500100090 HISTORY (940130C) N.O. 2226500100091 (950420E) 2226500100092 (961031A) * * CORRECTED BY S. MAEV * * 2226500100093 ENDBIB 91 0 2226500100094 COMMON 3 3 2226500100095 EN EN-RSL-HW POL-BM 2226500100096 MEV MEV NO-DIM 2226500100097 6.7000E+01 3.0000E+00 3.6000E-01 2226500100098 ENDCOMMON 3 0 2226500100099 ENDSUBENT 98 0 2226500199999 SUBENT 22265002 19961031 00002226500200001 BIB 3 8 2226500200002 REACTION (1-H-2(N,2N)1-H-1,,POL/DA,P,ANA) ANALYZING POWER IN 2226500200003 THE N-P QUASI-FREE SCATTERING REGION, I.E., 2226500200004 THE REGION WHERE THE ENERGY OF THE RESIDUAL NEUTRON 2226500200005 IS CLOSE TO ZERO. 2226500200006 STATUS .DATA TAKEN FROM TABLE 1 OF MAIN REF. 2226500200007 HISTORY (940130C) N.O. 2226500200008 (950420E) 2226500200009 (961031A) REACTION CODE CHANGED FROM (N,N+P) TO (N,2N)2226500200010 ENDBIB 8 0 2226500200011 COMMON 1 3 2226500200012 ERR-1 2226500200013 PER-CENT 2226500200014 4.0000E+00 2226500200015 ENDCOMMON 3 0 2226500200016 DATA 3 6 2226500200017 ANG-CM DATA DATA-ERR 2226500200018 ADEG NO-DIM NO-DIM 2226500200019 3.0600E+01 5.7000E-02 1.8000E-02 2226500200020 4.6600E+01 1.1000E-01 2.2000E-02 2226500200021 6.3700E+01 1.2900E-01 1.7000E-02 2226500200022 8.5500E+01 9.9000E-02 3.5000E-02 2226500200023 1.0410E+02 6.7000E-02 2.5000E-02 2226500200024 1.3150E+02 1.9000E-02 5.6000E-02 2226500200025 ENDDATA 8 0 2226500200026 ENDSUBENT 25 0 2226500299999 SUBENT 22265003 19961031 00002226500300001 BIB 3 8 2226500300002 REACTION (1-H-2(N,2N)1-H-1,,POL/DA,P,ANA) ANALYZING POWER IN 2226500300003 THE N-P FINAL-STATE INTERACTION REGION, I.E., THE 2226500300004 REGION WHERE THE RELATIVE ENERGY BETWEEN THE PROTON 2226500300005 AND THE RESIDUAL NEUTRON IS CLOSE TO ZERO. 2226500300006 STATUS .DATA TAKEN FROM TABLE 2 OF MAIN REF. 2226500300007 HISTORY (940130C) N.O. 2226500300008 (950420E) 2226500300009 (961031A) REACTION CODE CHANGED FROM (N,N+P) TO (N,2N)2226500300010 ENDBIB 8 0 2226500300011 COMMON 1 3 2226500300012 ERR-1 2226500300013 PER-CENT 2226500300014 4.0000E+00 2226500300015 ENDCOMMON 3 0 2226500300016 DATA 3 9 2226500300017 ANG-CM DATA DATA-ERR 2226500300018 ADEG NO-DIM NO-DIM 2226500300019 4.4900E+01 4.0000E-03 2.8000E-02 2226500300020 5.9300E+01 6.4000E-02 3.7000E-02 2226500300021 7.5100E+01 1.0900E-01 6.6000E-02 2226500300022 8.6400E+01 1.0800E-01 6.8000E-02 2226500300023 9.8800E+01 1.3300E-01 3.7000E-02 2226500300024 1.0470E+02 1.4500E-01 1.6700E-01 2226500300025 1.1930E+02 1.1800E-01 4.1000E-02 2226500300026 1.3950E+02 4.7000E-02 2.9000E-02 2226500300027 1.4990E+02-3.3000E-02 1.3300E-01 2226500300028 ENDDATA 11 0 2226500300029 ENDSUBENT 28 0 2226500399999 ENDENTRY 3 0 2226599999999