INVESTIGATIONS ABOUT THE INFLUENCE OF THE EXTERNAL CIRCUIT ELEMENTS ON THE PROPAGATION OF IONIZATION WAVES IN THE POSITIVE-COLUMN OF A NEONGLOW-DISCHARGE

Citation
Kd. Weltmann et al., INVESTIGATIONS ABOUT THE INFLUENCE OF THE EXTERNAL CIRCUIT ELEMENTS ON THE PROPAGATION OF IONIZATION WAVES IN THE POSITIVE-COLUMN OF A NEONGLOW-DISCHARGE, Contributions to Plasma Physics, 35(3), 1995, pp. 225-239
Citations number
41
Categorie Soggetti
Phsycs, Fluid & Plasmas
ISSN journal
08631042
Volume
35
Issue
3
Year of publication
1995
Pages
225 - 239
Database
ISI
SICI code
0863-1042(1995)35:3<225:IATIOT>2.0.ZU;2-I
Abstract
Our investigations have been motivated by former works of MICHEL and A CHTERBERG [1]. They described the important influence of the external circuit elements and connected therewith the mechanism of feedback (BA RKHAUSEN k . v greater than or equal to 1). The properties of external and self-excited moving striations (threshold current, fundamental fr equency) are strongly influenced by the feedback. This paper demonstra tes the differences occuring either a voltage or a current source in t he external circuit is used in order to perturb the discharge and to r ealize different degrees of feedback by changing the external resistor R(ext) of the discharge. It is shown the impact on the fields of exis tence of self excited striations in a non driven discharge. Furthermor e our investigations yield differences in the width of ARNOL'D tongues [2] of periods one and two in the perturbed discharge depending on a varied degree of feedback. Last not least its influence on the behavio ur of quasiperiodic and chaotic states is demonstrated. The investigat ions permit first information concerning the sensivitity of one parame ter variation (feedback controll by external resistor) which might be used e.g. for a stabilization of unstable periodic orbits (controlling chaos).