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Title: Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems

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. Here, 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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
Publication Date:
Report Number(s):
2017-259, 1410
Journal ID: ISSN 2470-0045; PLEEE8; 2017-259, 1410, 2367
Grant/Contract Number:
NA0001944; SC-0012317
Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 97; Journal Issue: 6; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Research Org:
Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Country of Publication:
United States
Language:
English
OSTI Identifier:
1457145
Alternate Identifier(s):
OSTI ID: 1457082

Stillman, C. R., Nilson, P. M., Sefkow, A. B., Ivancic, S. T., Mileham, C., Begishev, I. A., and Froula, D. H.. Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems. United States: N. p., Web. doi:10.1103/PhysRevE.97.063208.
Stillman, C. R., Nilson, P. M., Sefkow, A. B., Ivancic, S. T., Mileham, C., Begishev, I. A., & Froula, D. H.. Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems. United States. doi:10.1103/PhysRevE.97.063208.
Stillman, C. R., Nilson, P. M., Sefkow, A. B., Ivancic, S. T., Mileham, C., Begishev, I. A., and Froula, D. H.. 2018. "Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems". United States. doi:10.1103/PhysRevE.97.063208.
@article{osti_1457145,
title = {Energy transfer dynamics in strongly inhomogeneous hot-dense-matter systems},
author = {Stillman, C. R. and Nilson, P. M. and Sefkow, A. B. and Ivancic, S. T. and Mileham, C. and Begishev, I. A. and Froula, D. H.},
abstractNote = {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. Here, 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.},
doi = {10.1103/PhysRevE.97.063208},
journal = {Physical Review E},
number = 6,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}