Measuring high-energy γ-rays with Ge clover detectors

摘要

Gamma-rays with energies up to 20.7MeV produced by the ~(208)Pb(p,γ) capture reaction were measured with the AFRODITE germanium detector array. The measured full energy peak efficiency of the array is 1.5% at 1.3MeV and 9(2) x 10~(-4) at 15MeV. The FWHM of capture γ-ray peaks was 50 keV up to the highest measured energies. The efficiency curve has been calculated using a Monte-Carlo simulation code GEANT. The simulation and measurements agree very well.