Paser

S. Banna et al., "Experimental Observation of Direct Particle Acceleration by Stimulated Emission of Radiation", Phys. Rev. Lett. 97, 134801 (2006)

Abstract: We report the first experimental evidence for direct particle acceleration by stimulated emission of radiation. In the framework of this proof-of-principle experiment, a 45 MeV electron macrobunch was modulated by a high-power CO2 laser and then injected into an excited CO2 gas mixture. The emerging microbunches experienced a 0.15% relative change in the kinetic energy, in a less than 40 cm long interaction region. According to our experimental results, a fraction of these electrons have gained more than 200 keV each, implying that such an electron has undergone an order of magnitude of 2×106 collisions of the second kind.

http://www.aip.org/pnu/2006/split/792-1.html

Levi Schacter also broke the news to the accelerator community for the very first time during the Advanced Accelerator Workshop this year that I co-organized. His viewgraphs presentation on this can be found here:

http://www.hep.anl.gov/aac06/plenary.../SCHACHTER.pdf

I just found out that we might be working with Schacter on this PASER if all the arrangements can be agreed to. This might sound interesting.

Zz.