Study on γ -ray source from the resonant reaction 19 F ( p , αγ ) 16 O at E p =340 keV

High energy γ-ray can be used in many fields, such as nuclear resonant fluorescence, nuclear medicine imaging. One of the methods to generate high-energy γ-ray is nuclear resonant reaction. The 19F (p, αγ) 16O reaction was used to generate 6.13 MeV γ-ray in this work. The angular distribution of 6.13 MeV γ-ray was measured by six LaBr3 detectors. The thick-target yield curve of 6.13 MeV γ-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) 28Si reaction at E p =992 keV. The cross section and total resonant width of the reaction determined to be 95.1 ±1.0 mb and Γ CM =2.21±0.22 keV, respectively.