Plasma Calculator

This is an online version of the original Nick Braithwaite Plasmacalculator Excel-Sheet. Also available as Android App:

Tg [K]

Te [eV]

ne [m-3]

Pressure p [Pa]

Mass Neutrals/Ions m [amu]

Cross Section neutrals sigma[m^2]

System Dimension L [m]

Volume V [m^3]

Magnetic field B [T]

Microwave f [GHz]

RF f [MHz]

Power P [W]

Voltage V [V]

Gas parameter A [m^-1Pa^-1]

Gas parameter B [V m^-1Pa^-1]

Parameter	Value	Unit
Distances
Neutral-Neutral	1.27e-7	[m]
Mean Free Path	1.04e-2	[m]
Debye Length	1.29e-5	[m]
Larmor Radius Electrons	6.56e-5	[m]
Larmor Radius Ions	1.79e-1	[m]
Densities
Neutrals	4.83e+20	[m^-3]
Electrons	1.00e+18	[m^-3]
Ionisation Degree	0.21%	[percent]
Frequencies
Plasma Frequency (electrons)	5.67e+10	[rad s^-1]
	9.03e+3	[MHz]
Plasma Frequency (ions)	2.08e+8	[rad s^-1]
	3.31e+1	[MHz]
Cyclotron Frequency (electrons)	1.78e+10	[rad s^-1]
Cyclotron Frequency (ions)	2.40e+5	[rad s^-1]
Upper Hybrid		[MHz]
Lower Hybrid		[MHz]
Collision Frequency (electrons vs. neutrals)	1.13e+8	s^-1
	2.83e+3	[MHz]
Velocities
Thermal velocity (electrons)	1.17e+6	[m s^-1]
Sound speed (electrons)	7.30e+5	[m s^-1]
Sound speed (ions) - Bohm velocity	2.68e+3	[m s^-1]
Thermal velocity (neutrals)	3.97e+2	[m s^-1]
Alfven velocity	3.45e+5 (2.48e+4 eV)	[m s^-1]
Fluxes
Bohm flux (ions)	2.68e+21	[m^-2 s^-1]
Directed flux (neutrals)	4.80e+22	[m^-2 s^-1]
Sheath
Matrix	3.33e-4	[m]
Child Langmuir	7.97e-4	[m]
Ignition
Voltage		[V]
Plasma Chemistry
Residence Time		[s]
Specific Energy Input		[eV]
Optics
Refractive Index