Speaker
Description
The spatially-resolved X-ray spectrum of laser-produced Al plasma near the target surface has been obtained in the energy range of 1.5-2.2 keV using a compact flat crystal spectrometer. The widely-used temperature and density diagnostics, the line ratios of Lyα/Heβ and IC/Heα, were measured and compared with the calculation results of a steady-state collisional-radiative model, so that the temperature and density profiles with a spatial resolution of 55 μm were obtained within 200 μm from the target plane. The plasma parameters derived from the spatially-integrated spectrum were used to calculate the ionization state distribution near the target surface with the steady-state model and the result was compared with the ion charge state distribution measured with an Electrostatic Ion Analyzer (EIA) at the distance of 4.2 m from the target surface. The validity of the steady-state model is discussed, as well as the difference between the calculated ion charge state distribution and that measured with the EIA.
| Funding Agency | National Natural Science Foundation of China |
|---|---|
| Email Address | luyt@impcas.ac.cn |
| I have read the Code of Conduct to attend ICIS2023. | Yes |
