Power-Law Scaling Relating the Average Charge State and Kinetic Energy in Expanding Laser-Driven Plasmas

A universal power-law scaling z[over ¯]∝E^{0.4} in the correlation between the average ion charge state z[over ¯] and kinetic energy E in expanding laser-driven tin plasmas is identified. Universality here refers to an insensitivity to all experimental conditions: target geometry, expansion direction, laser wavelength, and power density. The power law is accurately captured in an analytical consideration of the dependence of the charge state on temperature and the subsequent transfer of internal to kinetic energy in the expansion. These analytical steps are individually, and collectively, validated by a two-dimensional radiation-hydrodynamic simulation of an expanding laser-driven plasma. This power-law behavior is expected to hold also for dense plasma containing heavier, complex ions such as those relevant to current and future laser-driven plasma light sources.

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Publication Details

Journal
Physical Review Letters
Published
2024-09-17
DOI
https://doi.org/10.1103/physrevlett.133.125101
Citations
2
Primary Topic
Laser-Plasma Interactions and Diagnostics
Type
article
Field-Weighted Citation Impact
1.32

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article

Power-Law Scaling Relating the Average Charge State and Kinetic Energy in Expanding Laser-Driven Plasmas

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Power-Law Scaling Relating the Average Charge State and Kinetic Energy in Expanding Laser-Driven Plasmas

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article en
2 citations

Abstract

A universal power-law scaling z[over ¯]∝E^{0.4} in the correlation between the average ion charge state z[over ¯] and kinetic energy E in expanding laser-driven tin plasmas is identified. Universality here refers to an insensitivity to all experimental conditions: target geometry, expansion direction, laser wavelength, and power density. The power law is accurately captured in an analytical consideration of the dependence of the charge state on temperature and the subsequent transfer of internal to kinetic energy in the expansion. These analytical steps are individually, and collectively, validated by a two-dimensional radiation-hydrodynamic simulation of an expanding laser-driven plasma. This power-law behavior is expected to hold also for dense plasma containing heavier, complex ions such as those relevant to current and future laser-driven plasma light sources.

Physical Review LettersVol. 133(12)
University of Groningen (NL), Advanced Research Center for Nanolithography (Netherlands) (NL), Eindhoven University of Technology (NL), Vrije Universiteit Amsterdam (NL), ASML (Netherlands) (NL)
European Commission, Rijksuniversiteit Groningen, Universiteit van Amsterdam, Vrije Universiteit Amsterdam, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Horizon 2020 Framework Programme, European Research Council
Affordable and clean energy
Openalex Percentile: Top 11%
Laser-Plasma Interactions and Diagnostics
1.32
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