/*===================================================================*/ /* NRDF D1759 Data No.16 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,16; D#=D1759; TITLE=/ Measurements of secondary neutrons produced from thick targets bombarded by high energy neon ions /; PURPOSE=/ To perform a systematic study to measure the angular and energy distributions of neutrons produced from thick C, Al, Cu, and Pb targets bombarded by 100, 180 and 400 MeV/nucleon Ne ions. /; ATH=(T.KUROSAWA'1', N.NAKAO'2', T.NAKAMURA'1', Y.UWAMINO'3', T.SHIBATA'2', A.FUKUMURA'4', K.MURAKAMI'4'); INST-ATH=(2JPNTOH'1', 2JPNKEK'2', 2JPNIPC'3', 2JPNIRS'4'); /* '1' Cyclotron and Radioisotope Center */ REF=NST; VLP=36(1999)41; RCTS=(C(20NE,N)X, 27AL(20NE,N)X, CU(20NE,N)X, PB(20NE,N)X); PHQS=(ENGY-SPEC, N-MLT'5'); /* '5' Thick target differential multiplicity of neutron with respect to angle integrated over partial angular range */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,16; /* 2002-02-24 : Compiled+Checked, R.Suzuki + sK */ /* 2004-04-23 : Altered, N.Otuka. MLT in SF6 replaced by PY */ /* 2008-01-30 : Altered, N.Otuka. EDE added under METHOD */ /* 2009-08-23 : Altered, Nf. 014-017 corrected */ RTY=HEAVY-ION-RCT; ENR=NAT'6'; /* '6' The enrichments of targets are not given in the reference. But compiler asked T.Kurosawa. */ CHM=ELM; PHYS-FORM=SLD; BAC=X; POL-TGT=0%; ALGN-TGT=0%; ACC=SYN'7'; /* '7' Heavy Ion Medical Accelerator in Chiba (HIMAC) */ INST-ACC=2JPNIRS'8'; /* '8' The mass numbers of projectiles are not given in the reference. But compiler asked NIRS staff. */ BEAM-INTNSTY=XMA'9'; /* '9' The beam intensities were kept to be 100,000-1,000,000 particles per pulse. */ POL-PRJ=0%; DET-PARTCL=N; COINC=NO; ANT-COINC=NO; DET-SYS=(SCT'10',SCT'11',TOF'12',EDE'13'); /* '10' Plastic scintillator (NE102A) was used as the delta-E counter and the beam pick-up counter. Liquid scintillator (NE213) was used as the E counter. */ /* '11' Liquid scintillator */ /* '12' To measure the energy of neutron */ /* '13' To eliminate charged particles */ ERS-DET=XKEV'14'; /* '14' The neutron energy resolutions is represented as a function of neutron energy at Fig. 2 in reference. */ CALB-DET=/ Each E counter was calibrated with a 60Co Gamma-ray source. EFCN-DET=/ The neutron detection efficiencies were calculated with the Monte Carlo code of Cecil et al. for all energy ranges. Reference: R. A. Cecil, B. D. Anderson, and R. Madey, Nucl. Instrum. Methods 161, 439 (1979). /; /* 2006-10-13 : Altered, Mh + N.Otuka. Re-digitized, and SF6 and 8 corrected */ /* 2009-08-23 : Altered, Nf. SF5=PAR and E-MIN=5 MeV added */ RCT=PB(20NE,N)X; PHQ=N-MLT'50'; /* '50' Thick target differential multiplicity of neutron with respect to angle integrated over partial angular range */ THK-TGT=XMG/CM**2'51'; /* '51' 5670 mg/cm**2 for 100MeV/nucleon Ne ions, 11340 mg/cm**2 for 180MeV/nucleon Ne ions, and 34020 mg/cm**2 for 400MeV/nucleon Ne ions. */ INC-ENGY-LAB-RANGE=(100MEV/A, 180MEV/A, 400MEV/A); /* Analysis: - Integration of energy distribution - Integration of angular distribution /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,16; SYS-ERR=(3%'15',10%'16',8%'17',14%'18'); /* '15' Notmalization uncertainty due to number of accepted beam particles incident on target */ /* '16' Normalization uncertainty due to solid angle uncertainty /* '17' Normalization uncertainty due to additional uncertainty in the efficiencies at neutron energies near threshold (8% in Table 2, but 7% in text) */ /* '18' Total normalization uncertainty */ STATIST-ERR=X%'19'; /* '19' The statistical uncertainties vary in a range of 2 to 5 % for the low- to medium-energy (5-50 MeV) region of the spectra and increase to about 30% at the highest energies. */ ENGY-EMT-LAB=>5MEV; THTL-MIN=0DEG; THTL-MAX=90DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB YLD (MEV/A) (UNIT) 100 2.331E-01 180 8.577E-01 400 5.097E+00 \END; /*===================================================================*/ |