Chapman, D. A., Vorberger, Jan and Gericke, Dirk O. (2013) Reduced coupled-mode approach to electron-ion energy relaxation. Physical Review E, Volume 88 (Number 1). Article number 013102 . doi:10.1103/PhysRevE.88.013102 ISSN 1539-3755.

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Abstract

We present a reduced model for the energy transfer via coupled collective modes in two-temperature plasmas based on quantum statistical theory. The model is compared with exact numerical evaluations of the coupled-mode (CM) energy transfer rate and with alternative reduced approaches over a range of conditions in the warm dense matter (WDM) and inertial confinement fusion (ICF) regimes. Our approach shows excellent agreement with an exact treatment of the CM rate and supports the importance of the coupled-mode effect for the temperature and energy relaxation in WDM and ICF plasmas. We find that electronic damping of collective ion density fluctuations is crucial for correctly describing the mode spectrum and, thus, the energy exchange. The reduced CM approach is studied over a wide parameter space, enabling us to establish its limits of applicability.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Physical Review E
Publisher:	American Physical Society
ISSN:	1539-3755
Official Date:	2013
Dates:	Date Event 2013 Published
Volume:	Volume 88
Number:	Number 1
Page Range:	Article number 013102
DOI:	10.1103/PhysRevE.88.013102
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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