Measurements Of Gas Temperature In Microwave Plasma At Atmospheric Pressure By Molecular Emission Spectrometry

Author(s):  
Lei Deng ◽  
Guixin Zhang ◽  
Cheng Liu ◽  
Hong Xie
2017 ◽  
Vol 32 (10) ◽  
pp. 1988-2002 ◽  
Author(s):  
Nahid Chalyavi ◽  
Peter S. Doidge ◽  
Richard J. S. Morrison ◽  
Guthrie B. Partridge

Fundamental characteristics of a microwave plasma sustained in nitrogen (Agilent 4200 MP-ES) are investigated by a combination of thermochemical modelling and spectroscopic techniques, including Thomson scattering.


2017 ◽  
Vol 32 (10) ◽  
pp. 2056-2056
Author(s):  
Nahid Chalyavi ◽  
Peter S. Doidge ◽  
Richard J. S. Morrison ◽  
Guthrie B. Partridge

Correction for ‘Fundamental studies of an atmospheric-pressure microwave plasma sustained in nitrogen for atomic emission spectrometry’ by Nahid Chalyavi et al., J. Anal. At. Spectrom., 2017, DOI: 10.1039/c7ja00159b.


2007 ◽  
Author(s):  
Cristina Yubero ◽  
Milan S. Dimitrijević ◽  
Maria Carmen Garcia ◽  
Maria Dolores Calzada ◽  
Luka Č. Popović ◽  
...  

2021 ◽  
Vol 2064 (1) ◽  
pp. 012131
Author(s):  
V N Tikhonov ◽  
S A Gorbatov ◽  
I A Ivanov ◽  
A V Tikhonov

Abstract A new type of microwave source of non-thermal atmospheric pressure plasmas, presented earlier by the authors, has both the characteristics of a dielectric barrier discharge (in terms of the configuration and low gas temperature) and an ability to form a “clean” plasma jet like a classical microwave plasma torch. However, the need to use a circulator leads to a significant increase in complexity, cost and weight of the installation as a whole. The basis of the presented plasma source is a three-decibel waveguide bridge with connection through a narrow wall. Both output arms of the bridge are loaded on identical short-circuited segments of waveguides. The discharge tube passes across the waveguides at a distance of a quarter of the wavelength from the short circuit. Since the output arms of the bridge are always loaded symmetrically, the generator’s power which is reflected from the short circuits or not be absorbed in the microwave discharge, enters the decoupled arm of the bridge that is connected to the matched load. Thus, the magnetron is protected from the reflected wave without the need for an expensive circulator, in any case.


2018 ◽  
Vol 33 (12) ◽  
pp. 2153-2159 ◽  
Author(s):  
Zhenli Zhu ◽  
Xuedi Guan ◽  
Hongtao Zheng ◽  
Chun Yang ◽  
Zhi Xing ◽  
...  

In this paper, a low power atmospheric pressure glow discharge (APGD) microplasma source has been investigated for the determination of nitrate and ammonium ions with molecular emission spectrometry (MES) coupled with chemical vapor generation (CVG).


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