1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Plasma: Wave and Phase difference

  1. Dec 8, 2011 #1
    Hi,

    I need someone to rephrase the question or tell me what it is actually asking for because I am not sure I understand it clearly:

    Consider a plasma slab of width L. k_0 is the wave number in a vacuum, and k in the wave number in the plasma, where k satisfies the dispersion relation:
    [tex]
    \frac{ck}{\omega} = \left( 1-\frac{\omega^2_{pe}}{\omega^2}\right)^{1/2}
    [/tex]
    where c is speed of light, ω the wave frequency and ω_pe the electron plasma frequency.

    Question: Determine the phase of the wave at x=L when n=n_e0 = constant, relative to the phase of the wave traveling the same distance L in a vacuum.

    Should I start with 2 plane waves, one in vacuum and one traveling through the plasma, where I would assume that the second has a phase phi and determine the latter?

    Any clarification would be much appreciated.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?