Like local DC magnetic fields, evanescent fields quickly decay to 0. These are non-propagating local fields. These are the fields responsible for inductance and capacitance. It is the opposite of a radiating field.
On Fri, Feb 26, 2016 at 6:03 AM, Stephen Cooke <stephen_coo...@hotmail.com> wrote: > Apparently Silver or copper has a plasma frequency in the UV region which > is why it reflects light of below these frequencies > > https://en.wikipedia.org/wiki/Plasma_oscillation > > If i understand correctly at frequencies below the plasma frequency photon > emission no longer propagates but instead becomes evanescent. > > https://en.wikipedia.org/wiki/Evanescent_field > > This is probably a crazy idea but: > > Could very high electron plasma densities be reached in some materials or > structures perhaps in the vicinity of NAE, Highly Hydrogenated materials, > Rydberg matter or UDD or UDH for example? > > Is there a possibility for the electron density to be sufficiently dense > that it can have a plasma frequency in the X-ray region or above in these > materials or structures? > > If so what happens with X-ray or gamma emissions which typically have > frequencies below the plasma frequencies? > Are Evanescent X-rays or Gammas produced? > What happens to Bremsstrahlung emissions in this region? > Could near field or far field interactions of these evanescent waves lead > to resonance with particular nucleus energy level transitions for example? > Could it lead to collective behaviour and or resonances? > > I suppose this could topic could relate to the SPP mentioned by Axil in > some way too. > > Perhaps the maths or physics forbids this kind high energy evanescence, > hopefully a good Physicist or enthusiast knowledgable about this field > knows. Maybe Axil can enlighten me I hope? > >
