Surface chemical analysis — Secondary ion mass spectrometry — Linearity of intensity scale in single ion counting time-of-flight mass analysers

This document specifies the methodology for establishing and verifying linear intensity scaling within single ion counting time-of-flight mass spectrometers. It is particularly relevant for instruments utilized in secondary ion mass spectrometry for surface chemical analysis. The text outlines the necessary procedures to ensure accurate quantitative measurements by addressing the relationship between detected ion counts and the actual intensity of the ion beam. It covers the assessment of linearity across the dynamic range of the instrument, which is critical for reliable data interpretation in materials science and surface research applications. The approach described provides a framework for calibrating detection systems to maintain precision and consistency during the analysis of various surface compositions. By adhering to the outlined protocols, laboratories can ensure their analytical equipment performs within expected parameters, facilitating reproducible results in the characterization of thin films and surface layers. This technical specification serves as a reference for operators and quality assurance personnel involved in advanced surface analysis workflows.