Uncertainties in the Measurement of Helium Plasma Temperature by the Relative Intensity Method

1965 ◽  
Vol 4 (12) ◽  
pp. 1589 ◽  
Author(s):  
H. Chuang
Keyword(s):  
Relative Intensity ◽  
Plasma Temperature ◽  
Helium Plasma

scholarly journals The temperature characteristics of plasma induced by femtosecond laser radiation

2019 ◽  
Vol 220 ◽  
pp. 03034
Author(s):  
Sergei Arakelyan ◽  
Svetlana Zhirnova ◽  
Arkady Galkin ◽  
Dmitriy Kochuev ◽  
Elena Shamanskaya ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Femtosecond Laser ◽  
Electron Concentration ◽  
Relative Intensity ◽  
Collision Frequency ◽  
Plasma Temperature ◽  
Spectral Lines ◽  
Femtosecond Laser Radiation ◽  
Plasma Parameters ◽  
Atoms And Molecules

In this work, the plasma temperature in an argon and nitrogen medium is measured at various pressure values. Such data can be used to calculate plasma parameters: electron concentration, collision frequency with atoms and molecules, etc. Two approaches are used to measure temperature: using a pyrometer and measuring the relative intensity of spectral lines.

Re-ionization of a partially ionized plasma by an Alfvén wave of moderate amplitude

1980 ◽  
Vol 24 (1) ◽  
pp. 65-74
Author(s):  
M. H. Brennan ◽  
M. L. Sawley
Keyword(s):  
Plasma Temperature ◽  
Torsional Wave ◽  
Alfven Wave ◽  
Helium Plasma ◽  
Acoustic Oscillations ◽  
Radial Density ◽  
Helium Ions ◽  
Wave Pulse ◽  
Partially Ionized ◽  
Doubly Charged

This paper reports on the use of forced magneto-acoustic oscillations to investigate the effect of a torsional hydromagnetic (Alfvén) wave pulse of moderate amplitude on the properties of a partially ionized afterglow helium plasma. Observations of the magnetic flux associated with the oscillations, measured at a number of frequencies, are used to determine radial density proffles and to provide estimates of plasma temperature. The torsional wave is shown to cause significant re-ionization of the plasma with no corresponding increase in the plasma temperature. The torsional wave is shown to cause significant re-ionization of the plasma with no corresponding increase in the plasma temperature. However, the presence of a number of energetic particles is evidenced by the production of a significant number of doubly charged helium ions.

Measurement of the Temperature and Partial Pressure of a Uranium Plasma

1970 ◽  
Vol 24 (2) ◽  
pp. 253-258 ◽  
Author(s):  
R. T. Schneider ◽  
A. G. Randol ◽  
G. R. Shipman
Keyword(s):  
High Pressure ◽  
Partial Pressure ◽  
Relative Intensity ◽  
Plasma Temperature ◽  
Power Input ◽  
Single Line ◽  
Boltzmann Plot ◽  
Electron Pressure ◽  
Partial Pressures

The generation of a high-pressure uranium plasma is described. Determinations of temperature, uranium-II, and electron pressure are performed. The Boltzmann plot technique and the single-line, relative-intensity method are used. Radial distributions of the measured quantities across the plasma are given. Plasma temperature as a function of power input and pressure is measured. These temperatures range between 7900 and 10 300 K. Uranium partial pressures between 0.1 and 1.0 atm are deduced.

Effect of Atmospheric-Pressure Helium Plasma Jet on Cell Culture Medium

2013 ◽  
Vol 133 (5) ◽  
pp. 278-285
Author(s):  
Norimitsu Takamura ◽  
Douyan Wang ◽  
Takao Satoh ◽  
Takao Namihira ◽  
Hisato Saitoh ◽  
...  
Keyword(s):  
Cell Culture ◽  
Atmospheric Pressure ◽  
Culture Medium ◽  
Plasma Jet ◽  
Helium Plasma ◽  
Cell Culture Medium

scholarly journals Electrodeless atmospheric secondary induced ionization jet (EASII-jet): Dynamics and properties of a transferred helium plasma source

2020 ◽  
Vol 27 (12) ◽  
pp. 123504
Author(s):  
S. Iseni ◽  
A. Baitukha ◽  
N. Bonifaci ◽  
C. Pichard ◽  
A. Khacef
Keyword(s):  
Plasma Source ◽  
Helium Plasma
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