Abstract

This paper presents results for effective ionisation coefficients (\(\alpha _{\mathrm {eff}}/N\), N—gas density) obtained from the breakdown voltage and emission profile measurements in low-pressure dc discharges in vapours of alcohols: methanol, ethanol, isopropanol, and n-butanol. Our results for \(\alpha _{\mathrm {eff}}/N\) are determined from the axial emission profiles in low-current Townsend discharge and lay in the interval of reduced electric field E/N (E—electric field, N—gas density), from 1 kTd to 8.8 kTd. We also give a comparison of our experimental results with those from the available literature. Our data cover the high E/N range of the standard operating conditions and in the region where other data are available we have a good agreement.

Graphic abstract

中文翻译：

---

低压下酒精蒸气中低电流直流放电的有效电离系数

摘要

本文介绍了有效电离系数 ( \(\alpha _{\mathrm {eff}}/N\) , N -gas 密度) 的结果，这些结果是从酒精蒸汽中低压直流放电的击穿电压和发射分布测量中获得的：甲醇、乙醇、异丙醇和正丁醇。我们对\(\alpha _{\mathrm {eff}}/N\) 的结果是根据低电流汤森放电的轴向发射分布确定的，并且位于减小的电场E / N ( E -电场，N - 气体密度），从 1 kTd 到 8.8 kTd。我们还将我们的实验结果与现有文献中的结果进行了比较。我们的数据涵盖了高E/ N标准操作条件的范围和其他数据可用的区域我们有很好的一致性。

图形摘要