What are isotopes
Atoms with the same number of protons but different numbers of neutrons
How to calculate specific charge of a particle
Charge/mass
What is the job of the strong nuclear force?
Hold the nucleus together
When does the strong nuclear force change from repulsive to attractive?
Over 0.5fm
When does alpha emission happen in a nucleus?
When the nucleus is very big
What else is released in beta minus emission and why?
An antineutrino to carry away extra energy snd momentum
What are photons?
Discrete packets of EM radiation
Are the rest energy for particles different for their antiparticles?
No
When energy is converted into mass you get _____ amounts of matter and antimatter
Equal
If a proton is formed from firing two protons at each other what must also be created?
an antiproton
Minimum energy of a photon needed for pair production
Total rest energy of both particles produced ( both are the same)
How to convert from eV to J
Multiple by 1.6x10-19
What happens when a particle meets its antiparticle and what is it called?
All the mass is conveyed back into energy, annihilation
What are gauge bosons?
Exchange particles
What are the 4 fundamental forces?
Gravity, electromagnetic, weak nuclear, strong nuclear
What particles are affected by strong nuclear force?
hadrons
What particles are affected by electromagnetic force?
Charged particles
What are gauge bosons?
Exchange particles
What is the gauge bosons for weak nuclear force?
W+
W-
What is the gauge bosons for electromagnetic force?
Virtual photons
What is the gauge bosons for the string nuclear force?
Pions
What happens when 2 particles with equal charges meet and what force is responsible for this?
They repel via electromagnetic force
Can baryons and leptons cross sides in particle interaction diagrams?
No
Beta - decay of neutron
neutron > proton, electron, antineutrino
