# Nuclear and Particle Physics (Topic 8)

## Notes

Structure of the atom

Rutherford’s Alpha Scattering Experiment

Matter and Antimatter

The cyclotron and pair production

### Nuclear and Particle Physics flashcards

The three sub-atomic particles found in the atom are _________________, _______________ and __________________
proton, neutron and electron
Protons and neutrons are found in the _____________ and electrons are found in the _______________
nucleus, outer shells
Relative mass of proton
1
Relative mass of neutron
1
Relative mass of electron
1/1836
Mass of proton (kg)
1.6 x 10-^27 kg
Mass of neutron (kg)
1.6x10-^27 kg
Mass of electron (kg)
9.11x10^-31 kg
Charge of proton (Coulombs)
1.6 x 10(^-19) C
Charge of electron (Coulombs)
-1.6 x 10(^-19) C
Width of nucleus
10(^-14) m
Width of an atom
10(^-10) m
____________ forces keep the electrons in orbit around the nucleus
Electrostatic
The proton number is the number of ________ in the nucleus
protons
The nucleon number is the total number of __________ ____ ________ in the nucleus
protons and neutrons
Isotopes are atoms of the same _________ number but with different ________ numbers
proton, nucleon
The strong nuclear force is the force which holds _________ and ________ together inside the nucleus. It has to be strong enough to counteract the repulsion amongst the ________
protons, neutrons, protons
Which of the three sub-atomic particles does the strong nuclear force not act on?
Electrons
The strong nuclear force acts equally on all ________