Harry, A reasonable analogy. Surprising that such energy/momentum foci occur in such fields. It would be interesting to know if materials can be engineered to create them near, or between, surfaces.
-- Lou Pagnucco H Veeder wrote: > Like a twig whipping around an eddy in a stream? > > Harry > > > On Fri, Nov 8, 2013 at 6:49 PM, <[email protected]> wrote: > >> Surprising, but a monochromatic field can impart momentum "superkicks" >> to >> charged particles much greater than the momentum of a field photon. >> >> "Superkicks near optical vortices" >> http://iopscience.iop.org/2040-8986/labtalk-article/55223 >> >> "Superweak momentum transfer near optical vortices" >> >> http://iopscience.iop.org/2040-8986/15/12/125701/pdf/2040-8986_15_12_125701.pdf >> >> "Optical currents" >> http://www.phy.bris.ac.uk/people/berry_mv/the_papers/Berry414.pdf >> >> Low mass particles, e.g. electrons, positrons, may acquire significant >> energy when present in an "optical vortex." >> >> When the field is wide-band, my guess is that the effect is even >> greater. >> >> -- Lou Pagnucco >> >> >> >
