Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems.

Autor: Stillman CR; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA., Nilson PM; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA., Sefkow AB; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.; Department of Mechanical Engineering, University of Rochester, Rochester, New York 14623, USA., Ivancic ST; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA., Mileham C; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA., Begishev IA; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA., Froula DH; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.; Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
Jazyk: angličtina
Zdroj: Physical review. E [Phys Rev E] 2018 Jun; Vol. 97 (6-1), pp. 063208.
DOI: 10.1103/PhysRevE.97.063208
Abstrakt: Direct measurements of energy transfer across steep density and temperature gradients in a hot-dense-matter system are presented. Hot-dense-plasma conditions were generated by high-intensity laser irradiation of a thin-foil target containing a buried metal layer. Energy transfer to the layer was measured using picosecond time-resolved x-ray emission spectroscopy. The data show two x-ray flashes in time. Fully explicit, coupled particle-in-cell and collisional-radiative atomic kinetics model predictions reproduce these observations, connecting the two x-ray flashes with staged radial energy transfer within the target.
Databáze: MEDLINE