The preliminary study on method of saturated curve

Liguo Cao; Yan Chen; Qi Ao; Huijuan Li

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The preliminary study on method of saturated curve

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- The preliminary study on method of saturated curve
- Nuclear Techniques Vol. 10, Issue 3, (1987)
- 作者机构：
  
  成都地质学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：02 December 1985，
  
  Published：1987-03
- 稿件说明：
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Liguo Cao, Yan Chen, Qi Ao, et al. The preliminary study on method of saturated curve[J]. Nuclear techniques, 1987, 10(3): 7-12,31,59.
DOI：

Liguo Cao, Yan Chen, Qi Ao, et al. The preliminary study on method of saturated curve[J]. Nuclear techniques, 1987, 10(3): 7-12,31,59. DOI：

摘要

在能量色散X射线荧光分析中，用实验方法直接测定样品的吸收系数，进行基体效应的校正是一类行之有效的方法。但以往都是根据某一特定能量的射线穿过样品时的吸收过程来测定吸收系数。本文利用样品中特征谱线强度随厚度变化的规律（饱和曲线）在中间层厚度下计算吸收系数。较直接地反映了样品特性。这不但对吸收效应的校正有效，而且在一定条件下对增强效应也有校正作用。

文章着重讨论了综合灵敏度因子

的实际意义。并提出用实验方法测定

和吸收系数µ从而进行“准绝对测量”的想法。

文章最后列举了不同情况下进行校正的实验结果，以证明方法的正确性。

Abstract

It is an available method to determine directly the absorption coefficient of sample with the matrix effect correction. In this paper the absorption coefficient is calculated using the relation of the characteristic X-ray intensity with the thickness of samples (saturated curve) . The method explains directly the feature of the sample and the correction of the enhanced effect in certain condition. The method is not as same as the usual one in which the determination of the absorption coefficient of sample is based on the procedure of absorption of X-ray penetrating sample.

The sensitivity factor KI

is discussed. The idea of determinating KI

by experiment and quasi-absoluted measurement of absorption coefficient µ are proposed. The experimental results with correction in different condition are shown in the paper.

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references

杨乐山和吴传智，分析化学， 2 ，( 1974 )。

R. D. Gianque , Anal. Cuem. , 45 , 4 , 671 ( 1973 ).

周蓉生等，成都地质学院学报， 1 ，( 1983 )。

周蓉生等，同上， 4 ，( 1983 )。

张家骅等，放射性同位素X射线荧光分析，第一版，原子能出版社， 1981 年。

E. P. 伯廷著，李瑞城等译， X射线光谱分析的原理和应用，第一版，北京国防工业出版， 1983 年。

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