- #1
EIRE2003
- 108
- 0
gamma ray -> positron + electron
calculate the min freq of the gamma ray photon required for this reaction occur.
the reverse of the above reaction is pair annihiation. Write a reaction that represents pain annhiliation.
I thought this would be positron + electron -> gamma ray
calculate the min freq of the gamma ray photon required for this reaction occur.
the reverse of the above reaction is pair annihiation. Write a reaction that represents pain annhiliation.
I thought this would be positron + electron -> gamma ray