27th International School on Low Temperature Plasma Physics: Basics and Applications

Plasma Calculator

This is an extension of the original Nick Braithwaite Plasmacalculator Excel-Sheet.

Input Parameter

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Output Parameter

Parameter Value Unit
Distances
Neutral-Neutral 6.66e-8 [m]
Mean Free Path 2.96e-2 [m]
Debye Length 1.29e-5 [m]
Larmor Radius Electrons 2.07e-4 [m]
Larmor Radius Ions 1.66e-3 [m]
Densities
Neutrals 3.38e+21 [m-3]
Electrons 1.00e+19 [m^-3]
Ionisation Degree 2.96e-1% [percent]
Frequencies
Plasma Frequency (electrons) 1.79e+11 [rad s-1]
2.85e+4 [MHz]
Plasma Frequency (ions) 6.58e+8 [rad s-1]
1.05e+2 [MHz]
Cyclotron Frequency (electrons) 1.78e+10 [rad s-1]
Cyclotron Frequency (ions) 2.40e+5 [rad s-1]
Upper Hybrid (electrons) 2.87e+4 [MHz]
Lower Hybrid 1.04e+1 [MHz]
Collision Frequency (electrons vs. neutrals) 1.25e+8 s-1
1.98e+1 [MHz]
Velocities
Thermal velocity (electrons) 3.69e+6 [m s-1]
Sound speed (electrons) 2.31e+6 [m s-1]
Sound speed (ions) - Bohm velocity 8.48e+3 [m s-1]
Thermal velocity (neutrals) 3.97e+2 [m s-1]
Alfven velocity 1.09e+5 (2.48e+3 eV) [m s-1]
Fluxes
Bohm flux (ions) 8.48e+22 [m-2 s-1]
Directed flux (neutrals) 3.36e+23 [m-2 s-1]
Sheath
Matrix 8.15e-5 [m]
Child Langmuir 9.66e-5 [m]
Ignition
Ignition Voltage 1.28e+2 [V]
Plasma Chemistry
Residence Time 8.40e+0 [s]
Specific Energy Input 9.38e+4 [eV]
Optics
Refractive Index (no coll., B=0) I 1.16e+1