/*===================================================================*/ /* NRDF D1858 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; D#=D1858; TITLE=/Measurement of neutrons from thick Fe target bombarded by 210 MeV protons/; ATH=(S.YONAI'1', T.KUROSAWA'2', H.IWASE'1', H.YASHIMA'1', Y.UWAMINO'3', T.NAKAMURA'1'); INST-ATH=(2JPNTOH'1', 2JPNAIS'2', 2JPNIPC'3'); /* '1' Cyclotron and Radioisotope Center (CYRIC) */ REF=NIM/A; VLP=515(2003)733; RCTS=FE(P,N)X; PHQS=(ENGY-SPEC, ANGL-DSTRN, N-MLT); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,2; /* 2003-12-16 : Compiled */ ENR=NAT; CHM=ELM; PHYS-FORM=SLD'4'; /* '4' Covered with aluminium foil to absorb secondary electorons emitting from the target */ THK-TGT=XMG/CM**2'5'; /* '5' 24 mm diameter by 55 mm thickness, which can stop the incident protons completely */ POL-TGT=0%; ALGN-TGT=0%; ACC=CYC'6'; /* '6' Ring Cyclotron */ INST-ACC=2JPNIPC; INC-ENGY-LAB=210MEV; POL-PRJ=0%; DET-PARTCL=N; COINC=NO; ANT-COINC=NO; DET-SYS=(SCT'7',SCT'8',EDE'9',TOF'10'); /* '7' NE213 liquid scintillator used as E-counter and ToF start signal for neutron energy measurement. Calibration was performed to convert light output into MeV electron equivalent using 60Co and 241Am-Be gamma-ray sources. */ /* '8' NE102A liquid scintillator used as Delta E counter */ /* '9' To eliminate charged particles */ /* '10' To measure emitted neutron energy (Chopper trigger signal from the cyclotron was used as the stop signal for ToF measurement). Energy resolution of ToF experiment is shown in Fig.6 as a function of neutron energy. */ /* Experimental Method: - Particle identification by 'E/Delta E' measurement (To eliminate charged particles) - Time-of-flight (To measure emitted neutron energy (Chopper trigger signal from the cyclotron was used as the stop signal for ToF measurement). Energy resolution of ToF experiment is shown in Fig.6 as a function of neutron energy.) - Beam current integrated RCT=FE(P,N)X; PHQ=ENGY-SPEC; ANL=INCASC'18'; /* '18' MCNPX [L.S.Waters(Ed.) MCNPX User's Manual Version 2.4.0, LA-CP-02-408, LANL, 2002] and NMTC/JAM [K.Niita et al., Nucl. Instr. Meth. B184(2001)406]. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-ENGY-LAB=210MEV; SYS-ERR=(<5%'19',<2%'20',<5%'21',<18%'22',X%'23'); /* '19' Maximum normalization uncertainty in the beam current measured with a current integrator */ /* '20' Maximum uncertainty in the solid angle dominated by the uncertainty in the flight path length of neutron */ /* '21' Maximum uncertainty in neutron energy correction factor in terms of absorption and scattering between target and detector */ /* '22' Maximum uncertainty in total normalization */ /* '23' Uncertainty in the calculated detection efficiency is from 4% to 6% in the energy region below 38.3 MeV, and within 10% in the energy region above 38.3 MeV. */ EMT=N; THTL=7.5DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; ENGY-EMT-LAB-MIN ENGY-EMT-LAB-MAX DN/DOMEGA/DE DELTA-DN/DOMEGA/DE'24' (MEV) (MEV) (1/SR/MEV/PARTCL) (1/SR/MEV/PARTCL) 4.693 5.241 1.28E-03 +-2.12E-05 5.241 5.852 1.28E-03 +-1.86E-05 5.852 6.536 1.12E-03 +-1.58E-05 6.536 7.299 1.11E-03 +-1.46E-05 7.299 8.151 8.40E-04 +-1.22E-05 8.151 9.103 8.50E-04 +-1.17E-05 9.103 10.17 7.60E-04 +-1.04E-05 10.17 11.35 6.78E-04 +-9.42E-06 11.35 12.68 5.43E-04 +-8.09E-06 12.68 14.16 4.68E-04 +-7.33E-06 14.16 15.81 4.42E-04 +-6.86E-06 15.81 17.66 4.15E-04 +-6.37E-06 17.66 19.72 4.08E-04 +-6.00E-06 19.72 22.02 4.17E-04 +-5.68E-06 22.02 24.59 4.30E-04 +-5.35E-06 24.59 27.46 4.18E-04 +-4.95E-06 27.46 30.67 4.03E-04 +-4.61E-06 30.67 34.25 4.06E-04 +-4.39E-06 34.25 38.25 4.03E-04 +-4.20E-06 38.25 42.72 3.77E-04 +-1.70E-06 42.72 47.7 3.75E-04 +-1.55E-06 47.7 53.27 3.52E-04 +-1.36E-06 53.27 59.49 3.58E-04 +-1.27E-06 59.49 66.44 3.46E-04 +-1.16E-06 66.44 74.2 3.33E-04 +-1.08E-06 74.2 82.86 3.40E-04 +-1.06E-06 82.86 92.54 3.28E-04 +-1.01E-06 92.54 103.3 3.25E-04 +-9.89E-07 103.3 115.4 3.00E-04 +-9.38E-07 115.4 128.9 3.08E-04 +-9.45E-07 128.9 143.9 2.73E-04 +-8.84E-07 143.9 160.7 2.45E-04 +-8.30E-07 160.7 179.5 1.95E-04 +-7.36E-07 179.5 200.5 8.58E-05 +-4.83E-07 200.5 223.9 5.94E-06 +-1.25E-07 \END; /*===================================================================*/ |