Pages in this set

Page 1

Preview of page 1
Particles and Radiation ­ Victoria Halloran

Constituents of an atom

An atom is made up of protons, neutrons and electrons.

Ion ­ A charges atom caused by the gain or loss of electrons.

Specific charge
charge to mass ratio ­ Q/M
For a neural atom you have to remember the…

Page 2

Preview of page 2
Alpha decay

Beta decay

Photon model of electromagnetic radiation

Emitted in short `bursts' each burst leaving the source in a different direction.
Are emitted by a charged particle when it loses energy.
This can happen when a fast moving electron is stopped ­ eg. X-rays
This also happens when an…

Page 3

Preview of page 3
Pair production

A process of converting energy to mass in which a gamma
ray photon has enough energy to produce a
particle-antiparticle pair.
Hfmin= 2E0


The process by which a particle and its antiparticle meet and their
mass gets converted in the form of a pair of gamma ray…

Page 4

Preview of page 4
Classification of particles


Subject to the strong force and weak interaction
Can be split into two sub groups; baryons and mesons

Type of hadron made up of 3 quarks.
Protons and neutrons
(Protons are the only stable baryon into which other baryons
eventually decay ­ in particular the…

Page 5

Preview of page 5
Rutherford Scattering Experiment

Demonstrated that every atom contains a positively charged nucleus which is much smaller
than the atom where all the positive charge and most of the
mass of the atom is located.
Rutherford proposed a model of the atom to consist of :
-A heavy, positively charges nucleus…


No comments have yet been made

Similar Physics resources:

See all Physics resources »