Details

Autor(en) / Beteiligte

• Fletcher, L B
• Kritcher, A L
• Pak, A
• Ma, T
• Döppner, T
• Fortmann, C
• Divol, L
• Jones, O S
• Landen, O L
• Scott, H A
• Vorberger, J
• Chapman, D A
• Gericke, D O
• Mattern, B A
• Seidler, G T
• Gregori, G
• Falcone, R W
• Glenzer, S H

Titel

Observations of continuum depression in warm dense matter with x-ray Thomson scattering

Ist Teil von

• Physical review letters, 2014-04, Vol.112 (14), p.145004-145004, Article 145004

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2014

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• Detailed measurements of the electron densities, temperatures, and ionization states of compressed CH shells approaching pressures of 50 Mbar are achieved with spectrally resolved x-ray scattering. Laser-produced 9 keV x-rays probe the plasma during the transient state of three-shock coalescence. High signal-to-noise x-ray scattering spectra show direct evidence of continuum depression in highly degenerate warm dense matter states with electron densities ne>1024  cm-3. The measured densities and temperatures agree well with radiation-hydrodynamic modeling when accounting for continuum lowering in calculations that employ detailed configuration accounting.