The Analysis of the Possible Reasons of Distortion of the Photoelectron Spectrum Received by Means of X-Ray Time-of-Flight Photoelectron Spectrometer

Abstract

The system of registration of x-ray time-of-flight photoelectron spectrometer consisting of a collector which is made as an intricate shape electrode, amplifier, ADC and a registering device is presented. The selection of the given scheme is caused by rather low vacuum in the working chamber (pressure is about 10-6 Torr and a photomultiplier cannot be used) and by the specific character of electronic optics in electric-field time-of-flight spectrometer (the isochronous surface doesn't converge in a point). The scheme integrates an entrance signal for ADC with the minimum value of an order 10-9 A. In such a case the noise and external disturbances influence on parameters of an entrance signal is critical. The basic sources of disturbances, a way of protection and the interference-free x-ray tube are described.