Radioactivity
- Created by: Emma Pickersgill
- Created on: 05-02-13 09:20
View mindmap
- Radioactivity
- Alpha, ?
- Range in air: Fixed range (depends on energy); up to 100mm
- Deflection in a magnet field: Easily deflected
- Energy of each particle: Constant for a given source
- Ionisation: Produces about 10000 ions per mm in at at standard pressure
- Beta, ?
- Range in air: Up to about 1m
- Nature: electron (or positron if postive)
- Deflection in a magnetic field: Oppposite direction to ?, and less easily deflected
- Absorption: Stopped by approx 5mm of aluminium
- Ionisation: produces about 100 ions per mm at standard pressure
- Energy of each particle; varies up to a maximum for a given source
- Gamma, ?
- Range in air: Follows inverse square law
- Nature: Photon (of energy of the order MeV)
- Deflection in a magnetic field: Not deflected
- Absorption: Stopped by several cm of lead
- Energy of each photon: constant for a given source
- Alpha, ?
- Alpha, ?
- Range in air: Fixed range (depends on energy); up to 100mm
- Deflection in a magnet field: Easily deflected
- Energy of each particle: Constant for a given source
- Ionisation: Produces about 10000 ions per mm in at at standard pressure
Comments
No comments have yet been made