Generation of strongly coupled plasma using Argon-based capillary discharge lasers

Andrew K. Rossall, Valentin Aslanyan, Sarah Wilson, Greg J. Tallents

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Argon based capillary discharge lasers operate in the extreme ultra violet (EUV) at 46.9 nm with an output of up to 0.5 mJ energy per pulse and up to a 10 Hz repetition rate. Focussed irradiances of up to 1012 W cm-2 are achievable and can be used to generate plasma in the warm dense matter regime by irradiating solid material. To model the interaction between such an EUV laser and solid material, the 2D radiative-hydrodynamic code POLLUX has been modified to include absorption via direct photo-ionisation, a super-configuration model to describe the ionisation dependant electronic configurations and a calculation of plasma refractive indices for ray tracing of the incident EUV laser radiation. A simulation study is presented, demonstrating how capillary discharge lasers of 1.2ns pulse duration can be used to generate strongly coupled plasma at close to solid density with temperatures of a few eV and energy densities up to 1×105 J cm-3. Plasmas produced by EUV laser irradiation are shown to be useful for examining the equation-of-state properties of warm dense matter. One difficulty with this technique is the reduction of the strong temperature and density gradients which are produced during the interaction. Methods to inhibit and control these gradients will be examined.

Original languageEnglish
Title of host publicationX-Ray Lasers and Coherent X-Ray Sources
Subtitle of host publicationDevelopment and Applications XI
EditorsAnnie Klisnick, Carmen S. Menoni
PublisherSPIE
Number of pages7
Volume9589
ISBN (Print)9781628417555
DOIs
Publication statusPublished - 22 Sep 2015
Externally publishedYes
EventSPIE Optical Engineering + Applications - San Diego Convention Centre, San Diego, United States
Duration: 9 Aug 201513 Aug 2015
Conference number: XI
https://www.spie.org/conferences-and-exhibitions/past-conferences-and-exhibitions/optics-and-photonics-2015 (Link to Conference Details)

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9589
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE Optical Engineering + Applications
CountryUnited States
CitySan Diego
Period9/08/1513/08/15
Internet address

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Cite this

Rossall, A. K., Aslanyan, V., Wilson, S., & Tallents, G. J. (2015). Generation of strongly coupled plasma using Argon-based capillary discharge lasers. In A. Klisnick, & C. S. Menoni (Eds.), X-Ray Lasers and Coherent X-Ray Sources: Development and Applications XI (Vol. 9589). [95890C] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9589). SPIE. https://doi.org/10.1117/12.2188009