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## Homework Statement

i) Explain why in alpha decay short half lives correspond to large disintegration energies.

ii) Determine the energy release during the alpha decay of

^{238}U to

^{234}Th. The mass of

^{238}U is 238.0508m

_{u}, the mass of

^{234}Th is 234.0436m

_{u}, and the mass of

^{4}He is 4.0026m

_{u}.

## Homework Equations

None Given

## The Attempt at a Solution

I haven't seen an example of this in my course book, so I have more ideas than attempts at a solution.

Would I be right in right in finding the mass defect in U, Th and He, and then subtracting U's mass defect from Th's and He's, mass defect.

Once I have that I would use E=mc

^{2}, to calculate the energy released.

But this seems quite long and drawn out is there another method to calculate this, is the method even right?