Gamma energy spectrum stabilization and energy linear correction method

The gamma energy spectrum stabilization and energy linear correction method comprises the steps that energy curve calibration is conducted on a detector through various radionuclides, and the characteristic peak energy of the selected radionuclide combination should cover low, medium and high energy areas; the method comprises the following steps: acquiring characteristic peak channel addresses of natural nuclides K-40 and Th-232 in a background by measuring an energy spectrum in real time; adjusting the linear digital gain; correcting the energy curve; and performing energy spectrum analysis by using the corrected energy curve, and in the implementation process, displaying a long-term continuous dynamic stable spectrum through uninterrupted energy spectrum measurement. A radioactive source or an LED reference source is not used, and integration is simple; natural radioactivity existing in the background is used for spectrum stabilization, and the spectrum stabilization reference is stable and reliable; and t