Scattering Cross Section - Comsol
时间：03-26
整理：3721RD
点击：
Hello All,
I am trying to find the best way to calculate the scattering cross section in COMSOL for a 2-D cylinder. I eventually will move to 3-D spheres and cylinders. What I have is a circle of 30 nm in radius and my circular PML layer drawn 10 Lambda away, where at this boundary (far field) I want to calculate the scattering cross section. I am doing all of this in the RF Module->In Plane Waves->TE Waves->Scattering Harmonic Propagation.
Scattering cross section to me seems to be defined differently depending on what text book you are looking at. The one I see most is:
Csca = (1/|Eincident|^2) Integral (|Escattered|^2) dr
So here are my more specific questions.
1. Would you take Eincident to be E0iz_rfweh or Ez?
2. Is scEZ the Escattered filed I am looking for or do I have to subtract out the incident field?
Any input on your experiences calculating scattering cross sections would be greatly appreciated.
Regards,
Jacob
I am trying to find the best way to calculate the scattering cross section in COMSOL for a 2-D cylinder. I eventually will move to 3-D spheres and cylinders. What I have is a circle of 30 nm in radius and my circular PML layer drawn 10 Lambda away, where at this boundary (far field) I want to calculate the scattering cross section. I am doing all of this in the RF Module->In Plane Waves->TE Waves->Scattering Harmonic Propagation.
Scattering cross section to me seems to be defined differently depending on what text book you are looking at. The one I see most is:
Csca = (1/|Eincident|^2) Integral (|Escattered|^2) dr
So here are my more specific questions.
1. Would you take Eincident to be E0iz_rfweh or Ez?
2. Is scEZ the Escattered filed I am looking for or do I have to subtract out the incident field?
Any input on your experiences calculating scattering cross sections would be greatly appreciated.
Regards,
Jacob