4.4.2 Atoms and nuclear radiation Flashcards
What are the three types of nuclear radiation
- Alpha
- Beta
- Gamma
What is ionising power
Ionising power is the ability of a particle to ionise another atom.
Ionising power of radiation in descending order of highest to lowest
- Alpha
- Beta
- Gamma
Penetration of radiation in descending order of highest to lowest
- Gamma
- Beta
- Alpha
Relative mass of alpha radiation
4
Relative charge of alpha radiation
+2
Range in air of alpha radiation
up to 5cm
What absorbs alpha radiation
paper or card
What is the ionising power of alpha radiation
+2
What is the penetrating power of alpha radiation
low
What is the relative mass of beta radiation
0
What is the relative charge of beta radiation
-1
What is the ionising power of beta radiation
-1
What is the ionising power of gamma radiation
0
What is the range in air of beta radiation
up to 1m
What is the penetrating power of beta radiation
medium
What is the penetrating power of gamma radiation
high
What absorbs beta radiation
2mm of aluminium (or similar metal)
What absorbs gamma radiation
10cm lead or thick concrete
What is the range in air of gamma radiation
over 1km
What is the relative charge of gamma radiation
0
What is the relative mass of gamma radiation
0
