Collisionality: Difference between revisions

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assuming ''v > v*'', where ''m<sub>r</sub> = mm*/(m+m*)'' is the reduced mass and ''n*'' the bulk particle density.
assuming ''v > v*'', where ''m<sub>r</sub> = mm*/(m+m*)'' is the reduced mass and ''n*'' the bulk particle density.
The factor ln &Lambda; appears due to the accumulation of many small-angle collisions within a Debye sphere.
The factor ln &Lambda; appears due to the accumulation of many small-angle collisions within a [[Debye length|Debye sphere]].


== Dimensionless collisionality ==
== Dimensionless collisionality ==