asteroza + gain   11

Phys. Rev. Lett. 115, 194802 (2015) - Multi-MeV Electron Acceleration by Subterawatt Laser Pulses
So they are using a lesser plasma to be a gain medium for a laser, to make a more laser, to make a stronger plasma wakefield, for a particle accelerator. Rather than starting out with a really powerful laser. Implies tabletop accelerator may be easier now.
plasma  wake  wakefield  particle  accelerator  research  laser  gain  medium  physics  technology  Delicious 
november 2015 by asteroza
ttengines - clean air turbine technology
So, um, I think this is basically multiple valveless pulsejets driving an impulse turbine, right? I suppose since it's valveless, there are pressure and shock wave related reasons why you may not want higher pressures in the combustion chamber. Also, you can't use a downstream turbocharger since that would increase backpressure of the main turbine, so the blower must be powered by the main turbine (mechanically or electrically driven?)
pressure  gain  compressor  cyclic  detonation  cycle  gas  turbine  engine  powerplant  propulsion  motor  transportation  green  energy  DCGT  Delicious 
may 2010 by asteroza

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