، صفحه 0-0 (1)

عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)

The effect of the external magnetic field on the quasi two-temperature fast electron beams angular spread and spatial divergence in laser-solid interaction were investigated by Monte Carlo simulation using Geant4 simulation toolkit. Our simulations in the presence of an external magnetic field show that the dynamics and spatial divergence of the high energy electrons are strongly affected by the external magnetic field. It was shown that for electrons with the two-temperature energy distribution, electrons with a large angular spread (and small spatial divergence) in the momentum space are trapped by the magnetic fields lines and guided toward the fuel. Comparison of the results indicates that the optimal condition is obtained for the a magnetic field of about with a laser wavelength and laser intensity . It was presented that by increasing the external magnetic field, the angular spread of electrons becomes larger which results in smaller spatial divergence.

Angular Spread؛ Spatial Divergence؛ Strong Magnetic Field