/*===================================================================*/ /* NRDF D1894 Data No.13 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,13; D#=D1894; TITLE=/ Experimental studies on the proton-induced activation reactions of molybdenum in the energy range 22-67 MeV /; PURPOSE=/ To give reliable excitation functions for Mo+p reactions in the energy range 22-67 MeV /; ATH=(M.S.UDDIN'1', M.HAGIWARA'1', F.TARKANYI'2', F.DITROI'2', M.BABA'1'); INST-ATH=(2JPNTOH'1', 3HUNDEB'2'); /* '1' Cyclotron and Radioisotope Center */ REF=ARI; VLP=60(2004)911; /* Secondary references - Takacs, Private communication(2004) - Hagiwara, Private communication(2004) - JAERI-C, 2004-005(2004)138 (M.S.Uddin et al., Proc. of the 2003 Symposium on Nuclear Data) RCTS=(27AL(P,X)24NA, 27AL(P,X)22NA, CU(P,X)65ZN, CU(P,X)62ZN, CU(P,X)56CO, 100MO(P,X)99MO, MO(P,X)93MO, MO(P,X)96TC, MO(P,X)94TC, MO(P,X)95TC, MO(P,X)90NB, MO(P,X)92NB, MO(P,X)96NB, MO(P,X)95NB, MO(P,X)86ZR, MO(P,X)88ZR, MO(P,X)89ZR, MO(P,X)86Y, MO(P,X)87Y, MO(P,X)88Y); PHQS=XSECTN; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,13; /* 2004-05-12 : Compiled, C.Kurokawa + N.Otuka */ /* 2007-03-30 : Altered, Bk (ATOMKI) + N.Otuka. Reference added */ PHQ=XSECTN; ENR=NAT; CHM=ELM; PHYS-FORM=SLD; THK-TGT=XMG/CM**2'3'; /* '3' 49.58 micro-meter (Mo), 104.2 micro-meter (Cu) and 102 micro-meter (Al) */ POL-TGT=0%; ALGN-TGT=0%; ACC=CYC'4'; /* '4' Isochronous cyclotron, k=90 MeV AVF Cyclotron */ INST-ACC=2JPNTOH'5'; /* '5' Cyclotron and Radioisotope Center */ BEAM-INTNSTY=[25NA; POL-PRJ=0%; COINC=NO; ANT-COINC=NO; DET-SYS=HPGE'6'; /* '6' To measure activities of radioactive products of the target and monitors. The efficiency versus energy curve of the detector was determined experimentally using standard gamma-ray point sources with known strength, 152Eu, 133Ba, 241Am. 60Co and 137Cs. Efficiency is also calculated using the EGS4 Monte Carlo Code [Nelson et al, 1985]. */ /* Experimental Method: - Stacked target irradiation (Stack was assembled from molybdenum, copper and aluminium as Cu-Al-Mo and 10 groups were set together in an aluminium holder for irradiation.) - Energy degradation by foils (Energy degradation along the stack was determined using the computer program SRIM-2002 [J.F. Ziegler et al., The stopping and range of ions in solids, Pergamon, New York, 1984.] assuming the incident energy was 70 MeV.) /* Analysis: - Decay curve analysis (Two or more radionuclides emitted gamma-rays having very close energies, which were difficult to separate by the graphical analysis of the multicomponent decay curve, were analyzed using the difference in half-life of the nuclides by plotting the photon emission rate as a function of time.) /* Gamma energies given (except 90Tc and 90Nb) are obtained by private communication with authors. */ RCT=MO(P,X)92NB; DET-PARTCL=GAMMA'43'; /* '43' Delayed gamma from 92Nb (metastable state) */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,13; SYS-ERR=(5.8%'7',[3%'8'); /* '7' Uncertainty in monitor flux */ /* '8' Uncertainty in efficiency calibration of gamma ray */ STATIST-ERR=5%'9'; /* '9' Maximum statistical uncertainty (0.3-5%) */ ENGY-GAMMA=934.4KEV'44'; /* '44' Delayed gamma from 92Nb (metastable state) */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB XSECTN DELTA-XSECTN (MEV) (MB) (MB) 22.343 1.73 +-0.14 29.671 2.95 +-0.23 35.8 3.48 +-0.26 41.239 5.13 +-0.38 46.193 7.29 +-0.52 50.781 7.88 +-0.57 55.055 7.52 +-0.55 59.093 7.71 +-0.55 62.903 8.60 +-0.62 66.58 8.97 +-0.65 \END; /*===================================================================*/ |