Positive ion temperature effect on the plasma-wall transition

2018 ◽  
Vol 25 (6) ◽  
pp. 063509 ◽  
Author(s):  
R. Morales Crespo
Keyword(s):  
Temperature Effect ◽  
Ion Temperature ◽  
Positive Ion

Ion Temperature Effect on Weakly Collisional DC Plasma Sheath

2010 ◽  
Vol 29 (4) ◽  
pp. 365-370 ◽  
Author(s):  
Mansour Khoramabadi ◽  
Hamid Ghomi ◽  
Mahmoud Ghorannevis
Keyword(s):  
Temperature Effect ◽  
Plasma Sheath ◽  
Ion Temperature ◽  
Dc Plasma

Theoretical Aspects of the Metal-Electronegative Plasma Interface in Collisional Plasmas for Finite Positive Ion Temperature

2005 ◽  
pp. 161 ◽  
Author(s):  
J. I. Fernández Palop ◽  
J. Ballesteros ◽  
M. A. Hernández ◽  
R. Morales Crespo ◽  
S. Borrego del Pino
Keyword(s):  
Ion Temperature ◽  
Electronegative Plasma ◽  
Positive Ion

Effect of Positive-Ion Temperature in the Sheaths Surrounding Cylindrical and Spherical Probes in Electronegative Plasmas

2009 ◽  
Vol 37 (9) ◽  
pp. 1715-1722 ◽  
Author(s):  
R. Morales Crespo ◽  
J.I. Fernandez Palop ◽  
J. Ballesteros ◽  
M.A. Hernandez ◽  
M.V. Lucena Polonio
Keyword(s):  
Ion Temperature ◽  
Electronegative Plasmas ◽  
Positive Ion

Automatic diagnostic of plasmas with finite positive ion temperature

2005 ◽  
pp. 55-62
Author(s):  
J BALLESTEROS ◽  
J FERNANDEZPALOP ◽  
M HERNANDEZ ◽  
R MORALESCRESPO ◽  
S BORREGODELPINO
Keyword(s):  
Ion Temperature ◽  
Positive Ion

Virtual Instrument for automatic low temperature plasmas diagnostic considering finite positive ion temperature

Measurement ◽  
2014 ◽  
Vol 55 ◽  
pp. 66-73 ◽  
Author(s):  
J.M. Díaz-Cabrera ◽  
J.I. Fernández Palop ◽  
R. Morales Crespo ◽  
M.A. Hernández ◽  
A. Tejero-del-Caz ◽  
...  
Keyword(s):  
Low Temperature ◽  
Virtual Instrument ◽  
Ion Temperature ◽  
Low Temperature Plasmas ◽  
Positive Ion

scholarly journals Influence of the Ion Mass in the Radial to Orbital Transition in Weakly Collisional Low-Pressure Plasmas Using Cylindrical Langmuir Probes

2020 ◽  
Vol 10 (17) ◽  
pp. 5727 ◽  
Author(s):  
Guillermo Fernando Regodón ◽  
Juan Manuel Díaz-Cabrera ◽  
José Ignacio Fernández Palop ◽  
Jerónimo Ballesteros
Keyword(s):  
Free Path ◽  
Debye Length ◽  
Mean Free Path ◽  
Low Pressure ◽  
Plasma Potential ◽  
Ion Current ◽  
Ion Temperature ◽  
Langmuir Probes ◽  
The Relationship ◽  
Positive Ion

This paper presents an experimentally observed transition from the validity of the radial theories to the validity of the orbital theories that model the ion current collected by a cylindrical Langmuir probe immersed in low-pressure, low-temperature helium plasma when it is negatively biased with respect to the plasma potential, as a function of the positive ion-neutral collision mean free path to the Debye length ratio Λ=λ+/λD. The study has been also conducted on argon and neon plasmas, which allows a comparison based on the mass of the ions, although no transition has been observed for these gases. As the radial or orbital behavior of the ions is essential to establish the validity of the different sheath theories, a theoretical analysis of such a transition not only as a function of the parameters Λ and β=T+/Te, T+ and Te being the positive ion and electron temperature, respectively, but also as a function of the ion mass is provided. This study allows us to recognize the importance of the mass of the ion as the parameter that explains the transition in helium plasmas. Motivated by these theoretical arguments, a novel set of measurements has been performed to study the relationship between the Λ and β parameters in the transition that demonstrate that the effect of the ion mean free path cannot be completely ignored and also that its influence on the ion current collected by the probe is less important than the effect of the ion temperature.

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