Details

Autor(en) / Beteiligte

• BERS, A
• RAM, A. K
• FRANCIS, G

Titel

Relativistic analysis of absolute and convective instability evolutions in three dimensions

Ist Teil von

• Physical review letters, 1984-10, Vol.53 (15), p.1457-1460

Ort / Verlag

Ridge, NY: American Physical Society

Erscheinungsjahr

1984

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• The time-asymptotic pulse shape of absolute and convective instabilities is determined analytically, expanding pinch-point analysis of the Green function (Briggs, 1964) to the case of relativistic-electromagnetic instabilities in three dimensions. The differential equations for the pinch points in the observer's frame of reference are obtained; the case of a relativistic electron stream with effective average momenta acting both along and across a constant magnetic field is examined as an example; and the implications of the results for the investigation of relativistic stream interactions (as in free-electron lasers and cyclotron masers) and hot-electron-plasma instabilities (as in intensely heated mirror-confined laboratory plasmas and some astrophysical plasmas) are discussed.