Accession Number:

AD0262746

Title:

ON THE IMPLICATIONS OF ELECTRON DIFFUSION THROUGH A HYPERSONIC SHOCK FRONT

Descriptive Note:

Corporate Author:

BROWN UNIV PROVIDENCE RI

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

66.0

Abstract:

Recent experiments disclosed electrical effects well ahead of an advancing shock front. Certain of these effects were attributed to the diffusion of electrons through the shock front from the ionized region behind it. The diffusion hypothesis is examined in terms of a simple heuristic model, in which the diffusion is assumed to take place from a plane electron source moving with the shock velocity. The predictions of this model are generally consistent with the available experimental evidence. It is shown that the transient behavior of the precursor electron distribution is capable of increasing the Doppler shift of an electromagnetic wave reflected from the shock. Although the transient decays rapidly after the creation of the shock, there are conditions under which it should last long enough to allow an experimental check of this effect.

Subject Categories:

  • Electricity and Magnetism
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE