Parametric Study of Proton Acceleration from Laser-Thin Foil Interaction

Abstract

We experimentally investigated the accelerated proton beam characteristics such as maximum energy and number by varying the incident laser parameters. For this purpose, we varied the laser energy, focal spot size, polarization, and pulse duration. The proton spectra were recorded using a single-shot Thomson parabola spectrometer equipped with a microchannel plate and a high-resolution charge-coupled device with a wide detection range from a few tens of keV to several MeV. The outcome of the experimental findings is discussed in detail and compared to other theoretical works.

Complex diagnostic and numerical study of x-ray and particle emissions under relativistic ultra-short laser-solid interaction

“…We compare experimental results for near normal incidence (15°) and for 45°focusing geometries and the corresponding experimental layouts are shown in figures 1(a), (b). The temporal contrast of pre-pulses at nanosecond-picosecond timescale was measured with a third-order cross-correlator Sequoia (Amplitude Technologies) and is shown in figure 1(c) (Almassarani et al 2021). The femtosecond pre-pulse at around 0.3 ns has too low intensity and does not affect the final parameters of the pre-plasma.…”