Аннотация:We propose using oxygen, nitrogen, argon in the low-pressure mode and minimal cluster size as a laser target. Radiation from a multi-terawatt Ti:Sa laser complex at the Kurchatov Institute NRC was used (pulse duration Δt > 30 fs, pulse energy E < 300 mJ, repetition rate ν = 10 Hz). Laser radiation focusing provided a relativistic intensity of I=8×10^18W/cm2. The target was formed as a result of supersonic expansion of oxygen gas into a vacuum with a conical nozzle. This made it possible to obtain a stable, narrow (5–10 mrad) electron beam with a charge of tens of pC and a thermal spectrum with E = 4MeV. The best e-beam divergence (5 mrad) with sufficient charge (up to 30 pC) was obtained.
