scholarly journals Effect of the laser wavelength: A long story of laser-plasma interaction physics for Inertial Confinement Fusion Teller Medal Lecture

2016 ◽  
pp. 429-435
Author(s):  
Christine Labaune
Keyword(s):  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Laser Wavelength ◽  
Inertial Confinement ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Confinement Fusion

scholarly journals Laser-plasma interaction in direct-drive inertial confinement fusion

2016 ◽  
Vol 717 ◽  
pp. 012040 ◽  
Author(s):  
J F Myatt ◽  
J Shaw ◽  
V N Goncharov ◽  
J Zhang ◽  
A V Maximov ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Inertial Confinement ◽  
Direct Drive ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Confinement Fusion

scholarly journals Progress in proton radiography for diagnosis of ICF-relevant plasmas

2010 ◽  
Vol 28 (2) ◽  
pp. 277-284 ◽  
Author(s):  
M. Borghesi ◽  
G. Sarri ◽  
C.A. Cecchetti ◽  
I. Kourakis ◽  
D. Hoarty ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Space Physics ◽  
Inertial Confinement ◽  
Proton Radiography ◽  
Laser Plasma Interaction ◽  
Laser Plasma Interactions ◽  
Thin Foils ◽  
Confinement Fusion ◽  
Laser Facility

AbstractProton radiography using laser-driven sources has been developed as a diagnostic since the beginning of the decade, and applied successfully to a range of experimental situations. Multi-MeV protons driven from thin foils via the Target Normal Sheath Acceleration mechanism, offer, under optimal conditions, the possibility of probing laser-plasma interactions, and detecting electric and magnetic fields as well as plasma density gradients with ~ps temporal resolution and ~ 5–10 µm spatial resolution. In view of these advantages, the use of proton radiography as a diagnostic in experiments of relevance to Inertial Confinement Fusion is currently considered in the main fusion laboratories. This paper will discuss recent advances in the application of laser-driven radiography to experiments of relevance to Inertial Confinement Fusion. In particular we will discuss radiography of hohlraum and gasbag targets following the interaction of intense ns pulses. These experiments were carried out at the HELEN laser facility at AWE (UK), and proved the suitability of this diagnostic for studying, with unprecedented detail, laser-plasma interaction mechanisms of high relevance to Inertial Confinement Fusion. Non-linear solitary structures of relevance to space physics, namely phase space electron holes, have also been highlighted by the measurements. These measurements are discussed and compared to existing models.

scholarly journals Generation of shock waves in dense plasmas by high-intensity laser pulses

Nukleonika ◽  
2015 ◽  
Vol 60 (2) ◽  
pp. 193-198 ◽  
Author(s):  
John Pasley ◽  
I. A. Bush ◽  
Alexander P. L. Robinson ◽  
P. P. Rajeev ◽  
S. Mondal ◽  
...  
Keyword(s):  
Shock Waves ◽  
Laser Plasma ◽  
Inertial Confinement Fusion ◽  
Laser Pulses ◽  
Fast Ignition ◽  
Intense Laser ◽  
Inertial Confinement ◽  
Relative Significance ◽  
Wide Range ◽  
Confinement Fusion

Abstract When intense short-pulse laser beams (I > 1022 W/m2, τ < 20 ps) interact with high density plasmas, strong shock waves are launched. These shock waves may be generated by a range of processes, and the relative significance of the various mechanisms driving the formation of these shock waves is not well understood. It is challenging to obtain experimental data on shock waves near the focus of such intense laser–plasma interactions. The hydrodynamics of such interactions is, however, of great importance to fast ignition based inertial confinement fusion schemes as it places limits upon the time available for depositing energy in the compressed fuel, and thereby directly affects the laser requirements. In this manuscript we present the results of magnetohydrodynamic simulations showing the formation of shock waves under such conditions, driven by the j × B force and the thermal pressure gradient (where j is the current density and B the magnetic field strength). The time it takes for shock waves to form is evaluated over a wide range of material and current densities. It is shown that the formation of intense relativistic electron current driven shock waves and other related hydrodynamic phenomena may be expected over time scales of relevance to intense laser–plasma experiments and the fast ignition approach to inertial confinement fusion. A newly emerging technique for studying such interactions is also discussed. This approach is based upon Doppler spectroscopy and offers promise for investigating early time shock wave hydrodynamics launched by intense laser pulses.

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