- #1

- 21

- 0

## Homework Statement

In a beta decay H3 -> He3+, use the sudden perturbation approximation to determine the probability of that an electron initially in the 1s state of H3 will end up in the |n=16,l=3,m=0> state of He3+

## Homework Equations

|<n'l'm'|nlm>|^2

## The Attempt at a Solution

I actually know the answer to this but I am not clear as to why and I am wondering if there is an easier way to determine the solution.

The answer comes out to be 0. When integrating the wavefunctions |n'l'm'> and |nlm> in spherical coordinates to calculate the inner product (i.e. the probability amplitude), the integral over [tex] d\theta[/tex] returns 0. Is there an easier way to see this other than going through the calculations?

How is this result interpreted?

Thanks,

jsc