Radiation Flashcards
What is Radiation
Radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium
What are the three types of nuclear radiation and what do they consist of
Alpha - 2 protons and 2 neutrons
Beta-A fast moving electron
Gamma- A wave, part of the EM spectrum
What can be used to protect yourself from Gamma
About 3cm of lead
How can you protect yourself while your close to nuclear radiation
Clothes impregnated with lead
Lead Barriers
Reducing time spent with radiation
Increasing the distance with radiation
What is Activity,Absorbed dose, Equivalent dose, Equivalent dose rate all measured in
Activity -Bequerels/Bq
Absorbed dose-Grays/Gys
Equivalent dose-Sv
Equivalent dose rate-Sv/min
What is two types of Natural sources of background radiation and man made sources of background radiation
Natural-Radon Gas ,Rocks such as Granite and some of the food we eat
Man made- Building Materials, radioactive materials used in medicine and radioactive materials used in smoke alarms
What are the principles of the detectors
Geiger Muller Counter-Radiation can cause ionisation
Scintillation counter -Radiation can cause light to be released
Film Badge -Radiation can fog or shade in
What is the definition of half life
Half life is the time it takes for the activity of a source to decrease to half of its original value
What are some applications of radiation and nuclear radiation
X Rays
Cancer Treatment
Tracers
Sterlisations of medical equipment
What are some applications that are other(Industrial)
Smoke alarms
Sterlisation of food
Detecting cracks/flaws in pipes
