A NEW OFF-LINE GAIN STABILISATION METHOD APPLIED TO ALPHA-PARTICLE SPECTROMETRY

A new off-line gain stabilisation method is applied to high-resolution alpha-particle spectrometry of ²³⁵U. The software package SHIFTER automatically identifies and quantifies gain shift for intermediate spectra or even individual data in list mode files. By reversing the gain shift before combining all data into one sum spectrum, one can optimise the overall resolution. This automatic procedure is very useful with high-resolution spectrometry at low count rate, as a compensation for gain drift during the long measurement.