Maths

Plasma Calculator

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

T_g K

T_e eV

n_e m^-3

Pressure p Pa

Mass Neutrals/Ions m amu

Cross Section neutrals sigma m²

System Dimension L m

Magnetic field B T

Microwave f GHz

Parameter	Value	Unit
Distances
Neutral-Neutral	1.34e-7	m
Mean Free Path	1.21e-2	m
Debye Length	7.44e-6	m
Densities
Neutrals	4.14e+20	m^-3
Electrons	2.00e+18	m^-3
Ionisation Degree	4.83e-1%	percent
Frequencies
Plasma Frequency (electrons)	8.02e+10	rad s^-1
	1.28e+4	MHz
Plasma Frequency (ions)	2.94e+8	rad s^-1
	4.69e+1	MHz
Cyclotron Frequency (electrons)	1.78e+9	rad s^-1
	2.83e+2	MHz
Collision Frequency (electrons vs. neutrals)	7.88e+7	s^-1
Velocities
Thermal velocity (electrons)	9.52e+5	m s^-1
Sound speed (electrons)	5.96e+5	m s^-1
Sound speed (ions) - Bohm velocity	2.19e+3	m s^-1
Thermal velocity (neutrals)	4.29e+2	m s^-1
Fluxes
Bohm flux (ions)	4.38e+21	m^-2 s^-1
Directed flux (neutrals)	4.44e+22	m^-2 s^-1