扩散对火焰电离检测器电流-电压曲线的影响

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences Pub Date : 1992-08-08 DOI:10.1098/rspa.1989.0089

H. Bolton, P. Halbherr

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引用次数: 1

摘要

在火焰电离检测器中，对火焰中正离子携带的电流的早期分析被扩展到包括离子扩散的影响。已经注意到，早先的理论给出了一个电流-电压表达式，在电压非常低的情况下，实验测量结果与之不符。本文给出了一维和二维电场非线性微分方程的解，其中二维是火焰电离探测器的实验圆柱形布置。对低电流下的行为作了部分解释。

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The influence of diffusion on the current-voltage curve in a flame ionization detector

An earlier analysis of the electric current carried by positive ions from the flame in a flame ionization detector is extended to include the effect of the diffusion of the ions. It had been noted that the earlier theory gave a current-voltage expression from which the experimental measurements diverged at very low values of the voltages. Solutions of the nonlinear differential equations for the electric field are presented here in both one and two dimensions, the latter being the experimental cylindrical arrangement of the flame ionization detector. A partial explanation is given for the behaviour at low currents.

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Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences

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