Abstract:

Photoionized plasma is an important form of plasma in the universe, which is produced by some high-energy celestial bodies emitting strong radiation fields to irradiate the surrounding thin plasma. With the development of high energy density physics, the photoionized plasma can be produced in laboratory. In 2009, Fujioka et al. used the GEKKO-XII laser facility to produce photoionzed Si plasma, and observed X-ray spectrum similar to that in astrophysical environment. This paper reviews the main theoretical simulation results for the experimental X-ray spectrum since this photoionization experiment, and proposes the future research direction on the photoionized plasma. This review aims to provide a reference for researchers in related fields and deepen their understanding of the physical mechanism of photoionized plasma

Key words:  plasma, photoionization, atomic processes, X-ray spectrum