摘要
A modified method of absolute efficiency calibration for germanium detector has been developed based on the fact that the intensities of captureγ-rays can be determined by the 1368KeVγ-rays from sodium activation when a NaCl sample is irradiated by thermal neutrons.As a verification of this method,the intensity of the 4.44MeVγ-ray from an Am-Be neutron source was determined.
