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Electron Mean Free Path in air & Electric field requirements?

  1. Feb 5, 2010 #1
    I can't seem to understand the math. If I have a free electron in air, surrounded by an electric field, how do I determine and calculate the mean free path, the electric field strength, and the distance between plates required to impart an energy of 80 eV to the free electron?
  2. jcsd
  3. Feb 6, 2010 #2
    Are you talking about 1 ATM (STP) or something less?

    Bob S
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