Radionuclide amplitude spectrum energy resolution compensation method at low temperature

The invention relates to the technical field of energy spectrum analysis, in particular to a radionuclide amplitude spectrum energy resolution compensation method at low temperature, which comprises the following steps of: 1, judging whether the temperature is lower than a preset low-temperature range, and if the temperature is lower than the preset low-temperature range, executing a step 2; the method comprises the following steps of 1, calculating an initial # imgabs1 # value of a current detector, 2, calculating an initial # imgabs0 # value of the current detector, 3, substituting the initial # imgabs1 # value in the step 2 into a system function # imgabs2 # of a trapezoidal pulse shaping algorithm, and 4, judging whether the difference between the two ends of the flat top meets an error range after the initial # imgabs3 # value is substituted in the step 3; and if the difference between the two ends of the flat top does not meet the error range, adjusting # imgabs4 #, and then returning to the step 3 unti