- #1
Mr.Brown
- 67
- 0
Homework Statement
hi
im trying to the integral int(delta(r-b)*exp(ikr)d^3r). but I am not really getting anywhere.
I´m trying to integrate over all space in spherical coordinates.
The r part is easy i just do:
delta(r-b)*exp(ikr)r^2*sin(a)*b*dr*da*db -> b^2*exp(ikb*cos(someangle??)*sin(a)*da*db
(sorry that i´m not familiar with tex :( )
I kinda need some help how to do the angular part.
My idea was that the solution should not invole the angles in any sense that´s sure and i think that it´s some kind of trigonometric function but i got no clue how to get somewhere i have some feeling that it´s somethink link sin(bk) * normalization factor but how to get there ?
Any help would be appreciated
thanks :)