Relevant data supporting the manuscript "Numerical investigation of transmission probability characteristics
in the first low‑density region of a laser wakefield accelerator" submitted to the Microfluidics and Nanofluidics journal (accepted for publication in July 2023).

Helium Gas properties used for all DSMC simulations carried out in the paper and raw data for the transmission probability versus inlet number density in Fig. 4 of the paper are enclosed.
