https://doi.org/10.1140/epjd/e2014-40523-y
Regular Article
Multispectral X-ray imaging with a multichannel Kirkpatrick-Baez microscope for imploded core temperature observation
1
Shanghai Institute of Laser Plasma, 1129 Chenjiashan Road, Shanghai
201899, P.R.
China
2
Key Laboratory of Advanced Micro-structured Materials, Tongji
University, Shanghai
200092, P.R.
China
a
e-mail: weiwang@fudan.edu.cn
Received: 23 August 2013
Received in final form: 21 March 2014
Published online: 20 May 2014
The coupling efficiency of short-pulse ignition laser energy to hot-spot internal energy directly affects the feasibility of fast ignition. Experimental characterization of the hot spot has attracted much attention. Among temperature, density and neutron yield of fast ignition experiments, the temperature of the hot spot has few available diagnostic methods. Multispectral X-ray imaging of hot-spot continuum emission is expected to give the time evolution of the electron temperature distribution. This article describes electron temperature determination from multispectral imaging, a dual-channel X-ray Kirkpatrick-Baez (KB) microscope designed for two-spectral imaging, and the experimental results of hot-core multispectral imaging of an imploded cone-shell target at the SG-II laser facility.
Key words: Plasma Physics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014
