uses for radiation Flashcards
whats the use for gamma from the cobalt-60 isotope radiation
can be used to treat tumours
why is gamma radiation used to fresh treat food
it kills bacteria on the food therefore the food will keep for longer
what radiation is used to sterilise hospital dressings and surgical instruments
gamma radiation
what can beta radiation be used to monitor
the thickness of sheets of paper or aluminum
how does radioactive monitoring work
an emitter is on the side of the sheet and a detector on the other the sheet moves past and the activity detected will remain the same as long as the thickness is unchanged
what radiation has sufficient penetrating power for underground leaks
gamma radiation
in detecting underground leaks why does the source need to have a short half life
to avoid dangerous materials being in the ground for to long
how can info about a fluid movement and mixing be obtained by
by using a suitable isotope
what are radioactive tracers used for
they are used to find out what is happening without the need to break into the object
what can iodine-131 be used for
for the investigation on the thyroid gland and used to test kidney function
why must care be taken in when using radioactive isotopes
because the radiation can damage the living cells chemicals
what must be controlled and worn when dealing with radioactive substances
the amount of time that the worker is exposed and protective clothing must be worn
what do smoke detectors do
alert people into fires smoke from the fire is detected by the device which gives out a alarm
what does one type of smoke detector use
what type of source is it
it uses americium-241
alpha radiation
how does alpha radiation work in smoke detectors
what happens if there is a fire
alpha radiation ionises air particles inside the smoke detector this allows a small electric current to flow
smoke particles going into the the detector are hit by alpha radiation this reduces the ionisation of the air particles
what are radioactive isotopes used in the industry for
by using what
to find the route of underground pipes using a gamma ray emitter or to control the thickness of metal as it is rolled on thin sheets
how is iodine-131 used
they are used to monitor the function of organs by injecting a small amount into the blood stream and detecting the emitted radiation
