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## Homework Statement

A proton of kinetic energy 0.42 x 10

^{-11}J is fired at a stationary oxygen-18 which has a binding energy of 2.35 x 10

^{-11}J. This reaction produces flourine-18 of binding energy 2.30 x 10

^{-11}J with the production of a neutron and gamma ray.

Q1) Explain why the high energy proton is required.

Q2) Estimate the energy of the gamma photon

## Homework Equations

None

## The Attempt at a Solution

Q1) - is it because energy is required to turn a neutron into a proton inside the nucleus? Or would I have to talk about the bidning energy?

Q2) I am unsure if it is 0.05 x 10

^{-11}J (difference in binding energy) or 0.37 x 10

^{-11}J (the remaining kinetic energy of the proton (I am thinking this is more likely)

Some guidance/confirmation would be greatly appreciated!