A Comparison of the Peak-to-Background Method and an Empirical Correction of the Results in the Energy-Dispersive Electron Probe Quantitative Analysis of Powder Materials

Author:

Pukhov D. E.1

Affiliation:

1. Valiev Institute of Physics and Technology, Yaroslavl Branch, Russian Academy of Sciences

Abstract

Several algorithms for correcting the results of the quantitative electron probe elemental analysis of samples with rough surfaces and powder materials are compared. The effectiveness of the methods was estimated by the deviations of corrected weight fractions of elements from the results obtained for reference samples, i.e., polished plates of test materials. Using the most commonly used peak-to-background method, the intensity of continuous X-ray radiation was calculated by several methods. One method involved the analytical calculation of the bremsstrahlung generation function and the correction of the width and shape of the bremsstrahlung spectrum under the diagnostic lines of the elements based on the experimental spectra. The second, more rapid method was based on the direct simulation of the continuous radiation background by Monte Carlo methods in the NIST DTSA-II software environment. The last method of calculating the background of continuous radiation yielded smaller deviations of the results of quantitative analysis from the results obtained for reference samples. An empirical adjustment method was also tested. It was based on experimentally revealed patterns in the energy-dispersive spectra of powder samples. An analysis of the experimental data revealed an empirical dependence relating the parameters of characteristic photons to the value of accelerating voltage required to obtain the proper ratio of the weight concentrations of elements in the analysis of powdered materials. The proposed empirical method for correcting the results of analyses of powder samples based on the totality of the measurements performed is more effective.

Publisher

The Russian Academy of Sciences

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3