IONIZING RADIATION. Non-Ionizing Radiation Does not have enough energy to remove electrons from surrounding atoms. There Are Lots Of Types Of Radiation . Atomic Structure. All matter is made up of atoms Protons Neutrons Electrons Not all atoms are stable
An alpha particle contains two protons and two neutrons. An alpha particle is essentially the nucleus of a helium nucleus (but with a great deal more energy). It has a charge of positive two. It is represented by the following chemical symbol.
Alpha Radiation is only a hazard when inside your body (internal hazard)
Your skin will stop it
can’t penetrate skin
stopped by paper
found in soil, radon and other radioactive materials
The beta particle is a high energy electron. It has a charge of negative one. It has the following symbol.
skin, eye and internal hazard
stopped by plastic
found in natural food, air and water
radiation and an EXTERNAL HAZARD.
found in medical uses
stopped by lead
naturally present in soil and cosmic radiation
radon - 200
cosmic - 28
diet - 40
terrestrial - 28
Industrial and Medical Uses
cigarette smoking - 1300 mrem
round trip US by air
medical - 53
5 mrem per trip
building materials - 3.6
smoke detectors - 0.0001
fallout < 1
Early scientists determined that radiation was a useful tool but it could hurt you.
Radiation can cause burns and cellular damage.
The principle hazard from radiation exposure is an increase in the risk of cancer induction.
Radiation dosimeters measures radiation dose to people.
Beta, Gamma & X-ray Survey Meter
Alpha Survey Meter