How to get cross product?

Question

MOHD 2012-10-4

0
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Hi, I have problem in follolowing code,can any one help me to get cross product of E and B

clear all;

clc;

close all;

dim=64;

[kx,ky]=meshgrid(-1:2/(dim-1):1);

circ=sqrt(kx.^2+ky.^2)<1;

kx=kx/2;

ky=ky/2;

alp=asin(1);

k0=1/sin(alp);

k=256;

kz=sqrt(k0^2-(kx.^2+ky.^2));

Gx=sqrt(k0./kz).*((k0*ky.^2+kz.*kx.^2)./(k0*(kx.^2+ky.^2)));

Gy=sqrt(k0./kz).*((kz-k0).*kx.*ky)./(k0*(kx.^2+ky.^2));

Gz=sqrt(k0./kz).*(kx./k0);

l1=100;

z=-l1:1:l1;

c = numel(z);

mz=200/64;

n = size(kx);

Ex = zeros([k k c]);

Ey = zeros([k k c]);

Ez = zeros([k k c]);

q1 = exp(1i*kz*mz);

for jj=1:c

    q2 = q1.^z(jj).*circ;
    Ex(:,:,jj)=fftshift(fft2(q2.*Gx,k,k));
    Ey(:,:,jj)=fftshift(fft2(q2.*Gy,k,k));
    Ez(:,:,jj)=fftshift(fft2(q2.*Gz,k,k));

end

M1=Ex(k/2,:,:);

N1=squeeze(M1).';

E1=N1(l1+1,:);

M2=Ey(k/2,:,:);

N2=squeeze(M2).';

E2=N2(l1+1,:);

M3=Ez(k/2,:,:);

N3=squeeze(M3).';

E3=N3(l1+1,:);

c=3*10^8;

E=[E1 E2 E3];

B=E/c;

S=crossprodut(E,B);

thanks in advance

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Jan 2012-10-4

Please explain, what your code does and what it does not solve. Formatting the code properly would be a good idea also. It has been explained hundrets of times in this forum already, so I'm convinced you will find the reuquired information by your own.

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