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 wh...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.展开更多
Discrete high energy y-rays in~5-10MeV region were produced utilizing a~105/s Am-Be neutron source through the radiation capture process.The device can be conveniently used for energy calibration and relative efficien...Discrete high energy y-rays in~5-10MeV region were produced utilizing a~105/s Am-Be neutron source through the radiation capture process.The device can be conveniently used for energy calibration and relative efficiency determination forγ-detectors.展开更多
文摘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.
文摘Discrete high energy y-rays in~5-10MeV region were produced utilizing a~105/s Am-Be neutron source through the radiation capture process.The device can be conveniently used for energy calibration and relative efficiency determination forγ-detectors.
