FAST Rejuvenation of Copper-Beryllium Multipliers for Mass Spectrometer

A simple procedure for rejuvenating copper-beryllium electron multiplieris described. Firstly removing the contamination on the surface of dynodes bychemical cleaning, then activating the multiplier by high-frequency heatingin vacuum. Using this procedure the gain of multiplier has been rejuvenated,the life-time can be prolonged.