Nuclear Radiation Flashcards
1
Q
What is the most and least ionising
A
Alpha is the most ionising
Gamma is the least
2
Q
Alpha
Components and hazards
A
- two neutrons and two protons
- ejected from nucleus
-highly likely to be absorbed and cause damaged if passing through living cells
3
Q
Beta
Components and hazards
A
- high speed election
- ejected from nucleus as a neutron turns into a proton
- likely to cause damaged if absorbed by living cells
- can penetrate the body to inner organs
4
Q
Gamma
Components and hazards
A
- electromagnetic radiation
- emmited from nucleus
-likely to pass through living cells without being absorbed and causing ionisation
5
Q
What is radioactive contamination
A
-unwanted presence of materials containing radioactive atoms on other materials
6
Q
Irradiation:
A
- process of exposing an object to nuclear radiation
- can be deliberate or accidental
- does not cause object to become radioactive
7
Q
How can you protect against unwanted irradiation
A
- using sources of the lowest activity possible for shortest amount of time possible
- appropriate clothing such as lead apron
- no bare hands
8
Q
What does alpha beta and gamma pass through
A
- alpha-paper
- beta-paper and aluminium
- gamma-paper, Aluminium, sheer of lead
