atomic physics

2. the antiparticle of a neutron
3. the photon must account for this during pair production (two words, no spaces)
6. where a particle and an antiparticle collide to create energy
8. _______ number: number of protons and neutrons
9. _______ number: number of protons
10. charge divided by mass (two words, no spaces)
11. this is released during beta minus decay
14. in pair production, the photon must interact with this part of the atom first
17. a particle with 2p and 2n
18. the antiparticle of an electron

1. a process where a photon makes a particle-antiparticle pair (two words, no spaces)
4. in this type of radioactive decay, the atom remains unchanged
5. to turn joules into eV, I will _____ by 1.6x 10-19.
7. this changes into a proton during beta decay
12. a pair-produced positron might annihilate this part of the atom
13. atoms of the same element with same number of protons but different number of neutrons
15. the ____ nuclear force controls radioactive decay
16. number of photons created during annihilation