Der Einfluß der Elektronenreemission auf die Anlaufkennlinie einer Langmuir-Sonde

The influence of reemission of electrons on the characteristic of a probe is calculated and compared with measurements of the primary electrons in a low pressure discharge. Structures due to the energy dependence of the reemission coefficient which are predicted by the calculations are confirmed by the measurements. Thus it is possible – considering the dependence of the coefficient of reemission on the material of the probe surface – to investigate by this effect the state of the probe surface i. e. contamination and the effect of cleaning methods.