Journal Article10.1063/1.1134697
Microwave resonator probe for localized density measurements in weakly magnetized plasmas
261
TL;DR: In this article, a simple diagnostic tool for performing spatially resolved density measurements in a large, weakly magnetized, low-temperature plasma is described based on a microwave technique to determine the cold plasma dielectric property e = 1−ωp2/ω2, where ωp is the electron plasma frequency.
read more
Abstract: A simple diagnostic tool for performing spatially resolved density measurements in a large, weakly magnetized, low‐temperature plasma is described The principle is based on a microwave technique to determine the cold plasma dielectric property e=1−ωp2/ω2, where ωp is the electron plasma frequency A parallel‐wire quarter‐wavelength resonator is immersed into the plasma, the resonance frequency (ωres≳ωp) is measured and the density derived from the simple relation ωp2=ω2res−ω2res(e=1) In contrast to the familiar cavity resonance shift method, the present method is suited for localized density measurements The spatial resolution is comparable to the size of the resonator (2‐mm width×8 mm length, fres=745 GHz) The microwave technique is largely independent of sheath and thermal effects and is thus more reliable than probe measurements in nonuniformly rf‐heated magnetoplasmas A comparison with independent density diagnostic tools is presented and additional applications are pointed out
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Analytic description of the resonance frequencies of curling probe
Ali Arshadi,Ralf Peter Brinkmann +1 more
- 24 May 2015
TL;DR: The curling probe as mentioned in this paper is a novel realization of active plasma resonance spectroscopy (APRS) which can be miniaturized, and it can be flatly embedded into the chamber wall, thus enabling monitoring or control of a plasma process without perturbing it.
Inductive RF-discharge of low pressure in a magnetic field
A.M. Bystrov,M.E. Guschin,Alexander Kostrov,A.V. Strikovsky,A.I. Smirnov,K. Krafft +5 more
- 07 Nov 2002
TL;DR: In this article, the low-pressure inductive RF discharge was used to create plasma in a large vacuum chamber with the trap configuration of the magnetic field, and the focus task was to determine the regions of efficient ionization and energy exchange between the RF field and the plasma.
A cathode mounted plasma prefill source for high power microwave experiments
C. Grabowski,J.M. Gahl,Edl Schamiloglu +2 more
- 29 Jun 1997
TL;DR: In this article, a plasma source was developed for the UNM Long-Pulse BWO Experiment which can be mounted upstream of the SWS, directly into the cathode stalk of the electron beam diode.
Diagnostics of classical and dusty plasmas w ith collecting and emissive langmuir probes = Diagnosis de plasmas clásicos y granulares mediante sondas colectoras y emisoras de Langmuir
Kwun Wah Wen
- 11 May 2022
TL;DR: In this paper , a modelo unidimensional compuesto by un mínimo de potencial cerca de la superficie of a sonda was presented.
References
•Book
Plasma diagnostic techniques
Richard H. Huddlestone,Stanley L. Leonard,Harold P. Furth +2 more
- 01 Jan 1965
2K
Self-ducting of large-amplitude Whistler waves
TL;DR: In this paper, a large-volume laboratory plasma is filled with Whistler waves launched from an electric dipole of length L in a large volume laboratory plasma, and the radiation pattern narrows and forms a duct of diameter approximately equal to L. The observed nonlinear effects are explained by waveparticle interactions.
56
Filamentation of large amplitude whistler waves
TL;DR: In this paper, a filamentation instability of large amplitude whistler waves is observed in a laboratory experiment and it is predicted that similar nonlinear effects may arise in the ionosphere in connection with the planned high power whistler wave experiments of the AMPS mission.
39