【摘 要】
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High energy y-ray can be used in many fields,such as nuclear resonant fluorescence,nuclear medicine imaging.One of the methods to generate high-energy y-ray is
【机 构】
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Key Laboratory of Radiation Beam Technology and Materials Modification of the Ministry of Education,
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High energy y-ray can be used in many fields,such as nuclear resonant fluorescence,nuclear medicine imaging.One of the methods to generate high-energy y-ray is nuclear resonant reaction.The 19F (p,αy) 16O reaction was used to generate 6.13-MeV y-ray in this work.The angular distribution of 6.13-MeV y-ray was measured by six LaBr3 detectors.The thick-target yield curve of 6.13-MeV y-ray had been measured.The maximum yield was determined to be (1.85 ± 0.01) × 10-8 γ/proton,which was measured by HPGe detector and LaBr3 detector.The absolute efficiency of all the detectors was calibrated using 60Co and 27Al (p,γ)28Sireaction at Ep =992 keV.The cross section and total resonant width of the reaction were determined to be 95.1 ± 1.0 mb (1 b =10-24 cm2) andΓCM =2.21±0.22 keV,respectively.
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