Laboratory measurements of hot iron opacities at EUV wavelengths

E. Wagenaars, L. M.R. Gartside, A. K. Rossall, N. Booth, S. White, C. L.S. Lewis, M. M. Notley, R. Heathcote, G. J. Tallents

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

Abstract

The evolution of the transmission of extreme ultra-violet (EUV) light from a germanium backlighter through heated thin iron targets has been measured at laser irradiances of about 8><10 W cm-2. A rapid increase in transmission from 0 to 30% in 20 ps was observed. A two dimensional radiation hydrodynamics model was used to simulate the heating of the plasma and the transmission of EUV light as a function of time. The tamped iron targets were heated up to an average electron temperature of about 55 e V and a mass density of approximately 0.6 g cm-3. The transmission measurements are in reasonable agreement with modelling results. The experimental layout is similar to an X-ray laser experiment and therefore, for relatively low plasma temperatures, these kinds of experiments can be done in combination with X-ray laser experiments, giving transmission data for a range of wavelengths rather than a single X-ray laser wavelength.

Original languageEnglish
Title of host publicationSoft X-Ray Lasers and Applications VIII
Volume7451
DOIs
Publication statusPublished - 28 Sep 2009
Externally publishedYes
EventSoft X-Ray Lasers and Applications VIII - San Diego, CA, United States
Duration: 4 Aug 20096 Aug 2009

Conference

ConferenceSoft X-Ray Lasers and Applications VIII
CountryUnited States
CitySan Diego, CA
Period4/08/096/08/09

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Wagenaars, E., Gartside, L. M. R., Rossall, A. K., Booth, N., White, S., Lewis, C. L. S., ... Tallents, G. J. (2009). Laboratory measurements of hot iron opacities at EUV wavelengths. In Soft X-Ray Lasers and Applications VIII (Vol. 7451). [74510G] https://doi.org/10.1117/12.825057