Types of Radioactivity
- Created by: Isabella.Shep
- Created on: 06-04-18 10:45
View mindmap
- Radiation
- Alpha
- Is a helium nucleus.
- 2 neutrons +2 protons.
- Low penetration.
- Stopped by paper.
- Highly ionizing.
- Deflected towards negative because of positive charge.
- Is a helium nucleus.
- Beta
- Is an electron emitted from the nucleus when a neutron turns into a proton.
- 1 electron.
- Higher penetration than alpha.
- Stopped by aluminium.
- Weakly ionizing.
- Deflected toward positive because of negative charge.
- Is an electron emitted from the nucleus when a neutron turns into a proton.
- Gamma
- Waves.
- No particles.
- Highly penetrating
- Stopped by layers of lead or concrete.
- Very weakly ionizing
- Not deflected as it isn't a particle therefore has no charge.
- Waves.
- Decay
- Measured in becquerels (Bq).
- Half-life.
- Time taken for the number of radioactive nuclei to decrease by 1/2.
- Greiger- Muller tube.
- Detect and measure the number of decays each second.
- Counts per minute.
- Detect and measure the number of decays each second.
- Alpha
Comments
No comments have yet been made