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Undid revision 1052744791 by 2001:818:E331:8200:1DDE:1B59:6061:2ED1 (talk) Units are specified to be cgs, so 1e4 is correct not 1e-4. (The plasma frequency in 9 kHz at a density of 1/cm^3) |
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| '''[[Thermal de Broglie wavelength|electron thermal de Broglie wavelength]]''', approximate average [[de Broglie wavelength]] of electrons in a plasma:
: <math>\lambda_{\mathrm{th},e} = \sqrt{\frac{h^2}{2\pi m_e kT_e}} \approx 6.919 \times 10^{-8}\,\frac{1}{{T_e}^\frac{1}{2}}\ \mbox{cm}</math>
| '''classical distance of closest approach''', also known as "Landau length" the closest that two particles with the elementary charge come to each other if they approach head-on and each has a velocity typical of the temperature, ignoring quantum-mechanical effects:
: <math>\frac{e^2}{kT} \approx 1.44 \times 10^{-7}\,\frac{1}{T}\ \mbox{cm}</math>
| '''electron gyroradius''', the radius of the circular motion of an electron in the plane perpendicular to the magnetic field:
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