Differential Geometry Relations, relating to plasma physics.

[Alexjcb]

The context of this question is looking at straggling in plasma. I was told there was a simple differential geometry relationship between the following entities:

dE/dx, dE/dy and dE/dt,

where x,y are distance in perpendicular directions (axes on a plane), t is time and I'm using E to denote mean kinetic energy of a particle.

So far the resources I've consulted don't show in a clear manner how to go about finding this relation, they remain in the abstract.

 

[HallsofIvy]

There is no "differential geometry" relation, unless you happen to know the specific geometry of the plasma but there are physical relations depending upon whether the plasma is charged or not.

You might get better answers posting this question in the "physics section".