RESONANT MULTIPLE SCATTERING. R.V.MEHTA Ramanna Fellow Department of Physics Bhavnagar University,Bhavnagar 364022. scattering. Light wave when encounters obstacles either or both of two phenomena can occur Obstacle may absorb light
Department of Physics
Bhavnagar University,Bhavnagar 364022
vE and ltr are transport velocity and transport mean free path and are quite different from the phase velocity and extinction mean free path. It has been found that the propagation of light in MS is characterized by the transport velocity and it can be very small near resonance.
As ω2 is always positive , bound state in this formalism is lost for light waves since dielectric constatnt is always positive.
characterized by the local potential Vi(r,r;) =<r’|Vi|r’>=V0uδ(r-ri)δ(r-r’) where V0 is a coupling strength with the same dimension of energy and u is a volume. When a plane wave |k> is incident with a wave number k and energy E=k2 on a target it is modified according to
τd (ω) = κ→0 [1-a(ω)/2ωk]m
It has been shown that at resonance for m=2.73 and x=4.59 the dwell time is as large as 850a/co
This 5 time larger than thick samples used for MS experiments.