Home > atmlab > mie > mieab_1.m

mieab_1

PURPOSE ^

Computation of Mie coefficients a_n(z), b_n(z) for order 1,

SYNOPSIS ^

function result = mieab_1(m, x)

DESCRIPTION ^

 Computation of Mie coefficients a_n(z), b_n(z) for order 1,
 complex refractive index m=m'+im", and size parameter x=k0*a<<1, 
 where k0=vacuum wave number, a=sphere radius.
 This is the Rayleigh Approximation
 s. p. 101, 127, 131 in Bohren and Huffman (1983) BEWI:TDD122
 C. M�zler, May 2002

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

DOWNLOAD ^

mieab_1.m

SOURCE CODE ^

0001 function result = mieab_1(m, x)
0002 % Computation of Mie coefficients a_n(z), b_n(z) for order 1,
0003 % complex refractive index m=m'+im", and size parameter x=k0*a<<1,
0004 % where k0=vacuum wave number, a=sphere radius.
0005 % This is the Rayleigh Approximation
0006 % s. p. 101, 127, 131 in Bohren and Huffman (1983) BEWI:TDD122
0007 % C. M�zler, May 2002
0008 
0009 z=m*x;
0010 m2=m*m;
0011 k2=(m2-1)/(m2+2);
0012 x2=x*x; x3=x2*x;
0013 a1=-i*2*x3*k2/3;
0014 result=a1;

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