JJF 1851-2020 in English

This standard provides detailed guidelines for the calibration of alpha spectrometers. It outlines the procedures, requirements, and methods necessary to ensure the accuracy and reliability of measurements conducted using such instruments. The document covers key aspects including the preparation of calibration sources, measurement conditions, data analysis, and the evaluation of measurement uncertainty. It also specifies the criteria for determining the performance of alpha spectrometers and the documentation needed to support calibration activities. The standard is designed to assist laboratories and technicians in maintaining consistent and high-quality calibration practices. It includes recommendations for the selection and use of reference materials, as well as the handling and storage of calibration samples. The content is structured to facilitate the implementation of calibration processes in various operational environments.