Prospects for x-ray amplification with charge-displacement self-channeling
- Los Alamos National Lab., NM (USA). Theoretical Div.
- Illinois Univ., Chicago, IL (USA). Dept. of Physics
The authors develop an analytic theory of charge-displacement self-channeling: a mechanism that can dynamically trap a short intense pulse of light. They focus on the case of most interest for X-ray amplification: the strongly saturated channel, for which all free electrons are expelled from the channel core and the channel walls are overdense. Some results are: the intensity at the channel walls is independent of the total laser power, the radius of the channel increases very slowly with laser power, asymptotically as the fourth root, and the power in the channel wall is a constant. The channel is energetically stable in the sense that a bifurcation will cause a net increase in the electrostatic potential energy, but is only marginally stable against relativistic filamentation in the walls. They also find that the channel is an effective waveguide for all secondary radiation.
- OSTI ID:
- 7248118
- Journal Information:
- IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA), Journal Name: IEEE (Institute of Electrical and Electronics Engineers) Journal of Quantum Electronics; (USA) Vol. 25:12; ISSN IEJQA; ISSN 0018-9197
- Country of Publication:
- United States
- Language:
- English
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