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/* NRDF D1858 Data No.8 */
/*===================================================================*/
/* Bibliography */
/*===================================================================*/
\\BIB,8;
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,8;
/* 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=ANGL-DSTRN;
ANL=INCASC'60';
/* '60' 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]. */
/* Analysis:
- Integration of energy distribution (Integration for energy
range above 5 MeV)
/*===================================================================*/
/* Descriptive Parameters */
/*===================================================================*/
\\DATA,8;
INC-ENGY-LAB=210MEV;
SYS-ERR=(<5%'61',<2%'62',<5%'63',<18%'64',X%'65');
/* '61' Maximum normalization uncertainty in the beam current
measured with a current integrator */
/* '62' Maximum uncertainty in the solid angle dominated by the
uncertainty in the flight path length of neutron */
/* '63' Maximum uncertainty in neutron energy correction factor
in terms of absorption and scattering between target and
detector */
/* '64' Maximum uncertainty in total normalization */
/* '65' 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;
ENGY-EMT-LAB-MIN=5.0MEV'66';
/* '66' Lower limit energy to obtain double differential
multiplicity integrated over neutron energy */
/*===================================================================*/
/* Data Table */
/*===================================================================*/
\DATA;
THTL DN/DOMEGA DELTA-DN/DOMEGA'67'
(DEG) (1/SR/PARTCL) (1/SR/PARTCL)
0 7.64E-02 +-8.34E-05
7.5 6.12E-02 +-6.69E-05
15 5.23E-02 +-6.21E-05
30 4.53E-02 +-7.96E-05
60 1.88E-02 +-3.09E-05
90 1.00E-02 +-3.56E-05
110 7.34E-03 +-3.16E-05
\END;
/*===================================================================*/
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