Electron density measurements in shock tube using microwave interferometry
نویسندگان
چکیده
منابع مشابه
Laser plasma density measurements using interferometry
Fabrication of an interferometer is planned at the UCSD Laser Plasma and Laser-Matter Interactions Laboratory. The primary goal of this project is to measure the density at early times in the evolution of highly transient laser created plasmas. We describe the design concepts and details of different kinds of interferometer for measuring density evolution, especially during early time of plasma...
متن کاملElectron beam density measurements in shock waves in argon
An electron beam technique was used to measure density profiles of strong shock waves in argon with high accuracy. The experimental results are compared with the results of theoretical models. Of the models that are available in enough detail for comparison, the best agreement with experiment is shown by the direct simulation Monte-Carlo method (Bird 1968), assuming an inverse 12th power molecu...
متن کاملElectron density measurement by differential interferometry
A novel differential interferometer is being developed to measure the electron density gradient and its fluctuations. Two separate laser beams with slight spatial offset and frequency difference are coupled into a single mixer making a heterodyne measurement of the phase difference which is 1% of the total phase change experienced by each beam separately. This measure of the differential phase ...
متن کاملElectron Density Determination in an Are Plasma by Laser Interferometry
In collison dominated plasmas the electron density is the most important parameter. Therefore laser interferometry is very attractive because it allows a direct determination of this quantity without any rigid assumptions such as, e.g., local thermodynamical equilibrium (LTE). For references see, e.g., Griem \ Alpher and White 2 or Kunze 3. In the experiment described in this paper we intended ...
متن کاملElectron heating and density production in microwave-assisted helicon plasmas
Microwaves are injected into argon and helium helicon plasmas at 6 to 20 mTorr neutral pressure, 1.2 kW pulsed microwave power, up to 500 W continuous RF power, and up to 1 kG magnetic fields, with the objective of heating the tail of the electron energy distribution function (EEDF) and populating ion metastable states. Langmuir probes are used to measure the EEDF and optical emission spectrosc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2019
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.5086854