Study on γ-ray source from the resonant reaction ¹⁹F(p,αγ)¹⁶O 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 were determined to be 95.1±1.0 mb (1 b=10^-24 cm²) and Γ_CM=2.21±0.22 keV, respectively.