Radioactivity
By Sofia Foglia & Linda Bonvicini
What is radioactivity
- spontaneous emission of particles/energy from the nucleus of an atom because of the instability
- it emits three types of radiation:
- alpha radiation (α)--> alpha particles that are large and have a positive charge - beta radiation (β)--> beta particles that can be electrons (β-) or positrons (β+). - gamma radiation (γ)--> is electromagnetic radiation (like x-rays) is highly penetrating. to stop it are used very hard metals like lead.
Carbon-14 uses
Carbon-14 is a radioactive isotope --> widely used in radioactive dating It's used to determine the age of ancient artefacts, because it measures the amount remaining in the sample. also used in --> archaeological fields/ environmental sciences.
Other uses of radioactivity
applications in numerous fields: - medicine --> diagnostic purposes, nuclear imaging, PET scans--> allows to see internal organs and find diseases. - nuclear energy production--> controlled release of energy from the decay to generate electricity--> contributes to global power supplies.
radioactivity
Sofia Foglia
Created on October 2, 2023
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Transcript
Radioactivity
By Sofia Foglia & Linda Bonvicini
What is radioactivity
- it emits three types of radiation:
- alpha radiation (α)--> alpha particles that are large and have a positive charge - beta radiation (β)--> beta particles that can be electrons (β-) or positrons (β+). - gamma radiation (γ)--> is electromagnetic radiation (like x-rays) is highly penetrating. to stop it are used very hard metals like lead.Carbon-14 uses
Carbon-14 is a radioactive isotope --> widely used in radioactive dating It's used to determine the age of ancient artefacts, because it measures the amount remaining in the sample. also used in --> archaeological fields/ environmental sciences.
Other uses of radioactivity
applications in numerous fields: - medicine --> diagnostic purposes, nuclear imaging, PET scans--> allows to see internal organs and find diseases. - nuclear energy production--> controlled release of energy from the decay to generate electricity--> contributes to global power supplies.