Speaker
Dr
Igor Kostyukov
(Institute of Applied Physics RAS)
Description
We discuss generation of energetic photons in strong laser field at intensities above 10^23 W/cm^2. First we discuss production of electron-positron-gamma-quanta plasma at QED cascading. QED or electromagnetic cascades are one of the basic phenomena of high-field physics. QED cascades can efficiently convert laser radiation into gamma-quanta. The various methods and schemes to control of the efficiency, brightness and directivity of the gamma-ray source based on QED cascade are proposed. The proposed schemes are verified by numerical simulations with 3D QED PIC-MC code. We also discuss laser-solid interaction in QED regime when QED effects become significant. The conversion efficiency of the laser energy to the gamma-ray energy is calculated by 3D PIC-MC simulation for a wide range of laser-solid parameters. It is shown that in the low intensity regime the main part of the laser energy is converted into the ion motion while in the high intensity regime the gamma-ray generation becomes the key channel of the laser energy conversion.
Primary author
Dr
Igor Kostyukov
(Institute of Applied Physics RAS)
