line shape

[Rajini]

Hello PF members,
I curious to know some basic idea..why the line shape of nuclear decay is displayed as a Breit-Wigner (BW) profile (x-axis as energy and y-axis as intensity) ??.. or any \gamma ray is often shown as a BW profile??

thanks for your reply.

[Vanadium 50]

Because the Breit-Wigner is the Fourier transform of the exponential. Does this answer your question?

[Rajini]

Well..i hope your answer should be completely correct!
I actually know that nuclear decay is a sort of exp. function...but when i was thinking of my question....i dint get the idea of FT.
thanks