Uses Of Radiation Flashcards
What is a tracer ? And why are gamma and beta radiation used in them ?
Goes into the body and is followed by detector and highlights any problems in the body.
Are able to pass out the body and have a short half life so it doesn’t harm the patient
Why are gamma rays used to treat cancer
Gamma rays kill all living cells
Directed carefully at cancer cells
Cancer cells can be killed without harming normal cells
How can gamma rays used be to sterilise medical equipment and food.
Can kill all microbes
Keeps food fresh for longer
Has a long half life so it can keep both food sterilised and equipment for a relatively long time .
How does alpha particles intertwine with smoke detector s
A weak source of alpha radiation in smoke detector.
Source causes ionisation and ions form a current .
When there is a fire the smokes absorb radiation
Current is stopped and alarm sounds off
