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Measurements of free-free absorption in warm dense aluminium
- Source :
- Hyland, C, White, S, Kettle, B, Irwin, R, Bailie, D, Yeung, M, WIlliams, G, Heathcote, R, East, I, Spindloe, C, Notley, M & Riley, D 2021, ' Measurements of free-free absorption in warm dense aluminium ', Plasma Physics and Controlled Fusion, vol. 63, no. 7, 074003 . https://doi.org/10.1088/1361-6587/ac0353
- Publication Year :
- 2021
- Publisher :
- IOP Publishing, 2021.
-
Abstract
- Extreme ultraviolet radiation from a high harmonic source has been used to measure the free-free attenuation coefficient and real refractive index of warm dense aluminium, with sample conditions of near solid density and temperature of 0.9 ± 0.23 eV. These were compared to results from the literature, where the measured attenuation coefficients showed some consistency with the modelling and existing data from a previous experiment. The absolute values of the attenuation coefficient were found to reside between the different sets of models for the warm dense matter (WDM) attenuation coefficient, and were found to be more in line with modelling and measurements of the cold opacity from the literature. Novel measurements of the real refractive index of WDM were also achieved—while ambiguity makes these measurements consistent with all the models, they prove useful as a proof-of-concept for future WDM studies.
- Subjects :
- Diffraction
Materials science
XUV Spectroscopy
chemistry.chemical_element
DIFFRACTION
Warm dense matter
Radiant heat
Condensed Matter Physics
Inverse Bremsstrahlung Absorption
01 natural sciences
Warm Dense Matter
010305 fluids & plasmas
Nuclear Energy and Engineering
chemistry
Aluminium
XUV
Extreme ultraviolet
0103 physical sciences
Energy density
High harmonic generation
High Harmonic Generation
Free-Free Absorption
Atomic physics
010306 general physics
Absorption (electromagnetic radiation)
Subjects
Details
- ISSN :
- 13616587 and 07413335
- Volume :
- 63
- Database :
- OpenAIRE
- Journal :
- Plasma Physics and Controlled Fusion
- Accession number :
- edsair.doi.dedup.....ba14d1f41c8a902f37bbfd96c8abd3eb