Abstract
The linear growth rate of the electromagnetic and electrostatic instability in a plasma filled backward wave oscillator without a guiding axial magnetic field, are analyzed. It is shown that the absence of the external magnetic field has a small influence on the electromagnetic instability but profound effects on the electrostatic instability. The operation of a backward wave oscillator is found to be obtained when the space charge of the electron beam is neutralized by the plasma.
| Original language | English |
|---|---|
| Pages (from-to) | 2198-2200 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 60 |
| Issue number | 18 |
| DOIs | |
| State | Published - 1992 |