Abstract
A relativistic electron beam propagating through a plasma in the ion-focused regime exhibits an electromagnetic instability with peak growth rate near a resonant frequency ω∼2. Growth is enhanced by optical guiding in the ion channel, which acts as a dielectric waveguide, with fiber parameter V∼1(I/. A 1D theory for a laser making use of this instability is formulated, scaling laws are derived, and numerical examples are given. Possible experimental evidence is noted.
- Received 5 February 1990
DOI:https://doi.org/10.1103/PhysRevLett.64.2511
©1990 American Physical Society