/*===================================================================*/ /* NRDF D1760 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D1760; TITLE=/SPALLATION NEUTRON MEASUREMENT BY THE TIME-OF-FLIGHT METHOD WITH A SHORT FLIGHT PATH/; PURPOSE=/TO MEASURE THE DOUBLE DIFFERENTIAL CROSS SECTION ON PRODUCTION OF THE SPALLATION NEUTRONS./; ATH=(T.NAKAMOTO'1', K.ISHIBASHI'1', N.MATSUFUJI'1', N.SHIGYO'1', K.MAEHATA'1', S.MEIGO'2', H.TAKADA'2', S.CHIBA'2', M.NUMAJIRI'3', T.NAKAMURA'4', Y.WATANABE'5'); INST-ATH=(2JPNKYU'1', 2JPNJAE'2', 2JPNLEP'3', 2JPNTOH'4', 2JPNKYU'5'); /* '1'DEPARTMENT OF NUCLEAR ENGINEERING */ /* '4'CYCLOTRON RADIOISOTOPE CENTER */ /* '5'ENERGY CONVERSION ENGINEERING */ REF=NST; VLP=32(1995)827; RCTS=(C(P,N)X, PB(P,N)X); PHQS=ENGY-SPEC; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; /* 2002-11-15 : COMPILED, AUTHOR (T.NAKAMOTO) RECOMMEND TO USE DATA SET IN OTHER REFERENCE [NUCL.SCI.TECHNOL.34(1997)529]. */ RTY=SPAL; PHQ=ENGY-SPEC; ENR=NAT; CHM=ELM; PHYS-FORM=SLD; POL-TGT=0%; ALGN-TGT=0%; ACC=SYN'6'; /* '6' THE PI-2 LINE OF THE 12 GEV PROTON SYNCHROTRON */ INST-ACC=2JPNLEP; BEAM-INTNSTY=XMA'7'; /* '7' IN A LEVEL OF 100000 PROTONS / 2.5 S AT THE PI-2 BEAM LINE. */ POL-PRJ=0%; ION-SOURCE=/ INCIDENT PROTONS WERE GENERATED AS SECONDARY BEAM. TOF METHOD WITH A PAIR OF PILOT U SCINTILLATORS WAS ADOPTED FOR SEPARATION BETWEEN PROTONS AND PIONS. /; DET-PARTCL=N; COINC=NO; ANT-COINC=NO; DET-SYS=(TOF,SCT'8',PLST-SCT'9'); /* '8' TWO DEFFERENT SIZES (DIAMETERXTHICK=5CMX5CM, 2CMX2CM) OF NE213 NEUTRON DETECTORS WERE PLACED IN THE DIRECTIONS OF 15 DEGREE, 30 DEGREE, 60 DEGREE, 90 DEGREE, 120 DEGREE AND 150 DEGREE */ /* '9' NE102A PLASTIC SCINTILLATORS WERE MOUNTED AS VETO DETECTORS TO ELIMINATE CHARGED PARTICLE EVENTS BY THE ANTI-COINCIDENCE METHOD ERS-DET=XKEV'10'; /* '10' THE ENERGY RESOLUTIONS IN ONE SIGMA WERE 5.7 % AT THE NEUTRON ENERGY OF 10 MEV AND 14 % AT 300 MEV. */ EFCN-DET=/ THE UNCERTAINTY OF THE NEUTRON DETECTION EFFICIENCY RANGED UP TO 10 % /; RCT=C(P,N)X; THK-TGT=20000MG/CM**2; INC-ENGY-LAB=0.8GEV; DET-PARTCL=N; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-ENGY-LAB=0.8GEV; EMT=N; THTL=60DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; ENGY-EMT-LAB DSIGMA/DOMEGA/DE DELTA-DSIGMA/DOMEGA/DE (MEV) (B/SR/MEV) (B/SR/MEV) 1.2500 0.00054101 +-0.00013499 1.7500 0.00078493 +-0.00014741 2.5000 0.00048184 +-0.00010602 3.5000 0.00055838 +-0.00010300 4.5000 0.00054502 +-9.6332E-05 5.5000 0.00055483 +-0.00010383 7.0000 0.00042621 +-6.6886E-05 9.0000 0.00041771 +-5.9632E-05 12.500 0.00032820 +-4.0661E-05 17.500 0.00023045 +-3.2303E-05 25.000 0.00019731 +-2.6269E-05 35.000 0.00021811 +-3.0068E-05 45.000 0.00017234 +-2.8997E-05 55.000 0.00014678 +-2.5682E-05 70.000 0.00016315 +-2.2700E-05 90.000 0.00013323 +-1.9791E-05 125.00 9.3689E-05 +-1.2154E-05 175.00 4.5533E-05 +-7.5352E-06 250.00 2.1216E-05 +-3.4231E-06 350.00 4.0497E-06 +-1.6720E-06 \END; /*===================================================================*/ |