Sn ion energy distributions of ns- and ps-laser produced plasmas

A Bayerle, M J Deuzeman, S van der Heijden, D Kurilovich, T de Faria Pinto, A Stodolna, S Witte, K S E Eikema, W Ubachs, R Hoekstra, O O Versolato
2018 Plasma Sources Science & Technology  
Ion energy distributions arising from laser-produced plasmas of Sn are measured over a wide laser parameter space. Planar-solid as well as liquid-droplet targets are exposed to infrared laser pulses with energy densities between 1J/cm$^2$ and 4kJ/cm$^2$ and durations spanning 0.5ps to 6ns. The measured ion energy distributions are compared to two self-similar solutions of a hydrodynamic approach assuming isothermal expansion of the plasma plume into vacuum. For planar and droplet targets
more » ... plet targets exposed to ps-long pulses we find a good agreement between the experimental results and the self-similar solution of a semi-infinite simple planar plasma configuration with an exponential density profile. The ion energy distributions resulting from solid Sn exposed to ns-pulses agrees with solutions of a limited-mass model that assumes a Gaussian-shaped initial density profile.
doi:10.1088/1361-6595/aab533 fatcat:in7fhmjmtffe7lwq6wfet5xwsm