Work

Novel diagnostic method for high-Z laser-produced plasmas based on discrete spectral characteristics of low-Z ions

Year: 2026

Type: article

Abstract: Diagnosing the state of high-Z laser-produced plasma is challenging because of the narrow-band or quasi-continuous nature of radiation in the extreme ultraviolet region. This paper presents an innovative method that introduces discrete characteristic lines by doping with low-Z ions, using these lines to diagnose the state parameters of high-Z laser-produced plasmas. In the spectral simulation, the spatial distribution of plasma state parameters is assumed to follow a Gaussian distribution, and the radiation intensity of the spectrum is obtained by solving the radiative transfer equation along a single ray path. The method is benchmarked by analyzing the temporal evolution behavior of laser-produced plasma in an Al-Sn alloy. Finally, the effects of the doping ratio on the spectral profile and radiation energy within a 2% bandwidth around 13.5 nm are analyzed.

Source: Physics of Plasmas

DOI: 10.1063/5.0302810

Authors: Chaowei He, Qi Min, Siqi He, Haoyang Li, Haidong Lu, Maogen Su

Institutions: Northwest Normal University, Lanzhou Institute of Technology

Language: English

Topic: Laser-Plasma Interactions and Diagnostics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Natural Science Foundation of China, National Key Research and Development Program of China