Visualization of Obstacle-Induced Shock-Compression Ignition

Spherical Strong-Shock generation for Shock-ignition inertial fuSion

LLE Review, Volume 141 48 Introduction Shock ignition (SI)1–5 is an advanced concept in inertial confinement fusion (ICF)6 that is very promising and has the potential to provide significantly higher gains than conventional hot-spot ignition.7 SI is a two-step process where the fuel compression and ignition phases are separated by applying a highly shaped laser pulse with a duration of several ...

Emissions Control Challenges for Compression Ignition Engines

As emission standards continue to evolve, it is clear that future engine control strategies will involve the integration of combustion optimization, fuel refinement and advanced exhaust after-treatment technologies. The West Virginia University (WVU) Center for Alternative Fuels Engines and Emissions (CAFEE) continues to engage the challenge of future regulation in a multi-pronged approach, inv...

Homogenous Charge Compression Ignition (HCCI) Engines

Plastic Deformation in Laser-induced Shock Compression of Monocrystalline Copper

Copper monocrystals were subjected to shock compression at pressures of 10-60 GPa by a short (3 ns initial) duration laser pulse. Transmission electron microscopy revealed features consistent with previous observations of shock-compressed copper, albeit at pulse durations in the us regime. The results suggest that the defect structure is generated at the shock front. A mechanism for dislocation...

Shock Compression of Ilmenite

Singleand reflected-shock compression measurements on single-crystal i menite (FeTiO3) to pressures of 635 and 930 kbar, respectively, demonstrate anomalously large compressions above 4320 kbar and imply the onset of one or more major phase changes at this pressure level which continue to occur to at least 4600 kbar. The phase change onset pressure is considerably above the calculated upper bou...