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Design simulation is a good method that can be used together with other FA techniques to isolate the root cause of device failures. It is also useful in situations where conventional fault isolation techniques cannot be utilized. This paper presents a case study in which the use of design simulation together with nano-probing is used to successfully identify the root cause of a processor IO glitch...
Intense (Ilaser>1018 W/cm2) laser-plasma interaction offers a very efficient source of fast electrons at relativistic energies, which can be used for fast-ignition inertial confinement fusion, ultra-short x-ray sources and heating matter to warm dense states. We report theoretical and particle-in-cell simulation results for characterization of fast electron source produced from intense laser interaction...
Energetic proton beams driven by picosecond lasers can be focused to densities ∼1024 m−3 in vacuum, but complications arise as it enters solid material. We report evidence of a strong material dependence on the volume heated.
Recent experiments and simulations of proton generation and focusing in cone geometries have led to a better understanding of the important effects of the electric fields in and around the focused beam.1 The surrounding cone structure is shown to improve the focusing significantly, resulting in beam fluence diameters ≈ 55µm for protons with energies Ep >3 MeV. PIC-hybrid simulations predict that...
The pre-plasma created by the laser pre-pulse can significantly alter the dynamics of relativistic hot electrons generation in laser matter interaction at relativistic intensities (>> 1018 W/cm2). This may be important for fast ignition of Inertial Confinement Fusion (ICF) as optimum energy of hot electrons required for efficient core heating is in the range of 1-3 MeV
The characteristics of relativistic electrons generated in short-pulse laser plasma interactions are important for evaluating the success of the fast ignition concept. The important parameters include the spectrum, laser to electron conversion efficiency, and divergence angle of the electrons at the interface. Simulation results using 3-D particle-in-cell (PIC) techniques in fast ignition geometries...
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