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Alpha Beta and Gamma Radiation
Transcript of Alpha Beta and Gamma Radiation
Gamma radiation are electromagnetic rays, like X-rays. They are highly penetrating electromagnetic rays. Gamma rays are the most energetic form of electromagnetic radiation, with a very short wavelength of less than one-tenth of a nanometer.
Made up of Alpha particles
Produces 10,000 ionizing pairs per mm
Causes strong fluorescence
Has many varied uses from treating cancer to being in smoke detectors
Most commonly emitted by Plutoniom-236 and Uranium-238
Alpha, Beta and Gamma Radiation
An Alpha ray has a very limited range. When it meets a few cm of air, the ray will diminish (refer to graph shown).
Radiation is energy that comes from a source and travels through some material or space. Light, heat and sound are types of radiation.
Uses of Gamma Radiation
- Gamma rays are used in medicine to kill and treat certain types of cancers and tumors. Gamma rays passing through tissue of the body produce ionization in tissue.
- Gamma rays can be used to examine metallic castings or welds in oil pipelines for weak points. The radioisotopes preserve foods. Although the rays never come in contact with food, beta radiation kills various organisms, such as bacteria, yeast, and insects.
- Gamma rays are often used in the food industry. The radioisotopes preserve foods. Although the rays never come in contact with food, beta radiation kills various organisms, such as bacteria, yeast, and insects.
- Gamma rays can be used to detect beryllium. They also played a very important role in the development of the atom bomb.
heavy, short-range particle
light, short-range particle
Properties of Gamma radiation
Very highly penetrating, smallest mass and charge, most stopped by a thick layer of steel or concrete, but even a few cm of dense lead doesn't stop all of it!
The lowest ionizing power of the three, gamma radiation carries no electric charge and has virtually no mass, so not much of a 'punch' when colliding with an atom.
10 cm --->
Pure beta emitters