Original scientific paper
Laser interferometric measurements of electron density in a shock wave plasma
N. Konjević
; Institute of Physics, Beograd
Lj. Ćirković
; Institute of Physics, Beograd
J. Labat
; Institute of Physics, Beograd
Abstract
The application of a laser interferometric technique is described for the investigation of electron density behind the reflected shock wave in an electromagnetic, T type shock tube. The tube was filled with the mixture of argon and hydrogen (9 : 1) to the pressure of 1 Torr. The advantages and limitations of the method are discussed. The electron density in plasma (2.11 - 3.57 · 10^17 cm ^-3) was determined simultaneously by the laser interferometry at two different wavelengths and by the measurements of the Stark broadening parameters of Hβ line. Results of these two sets of measurements agree within 4 %.
Keywords
laser interferometric measurements; electron density; shock wave plasma
Hrčak ID:
321414
URI
Publication date:
1.7.1970.
Visits: 112 *