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Understanding Radiation: Types, Properties, and Applications in Technology

Dive into the fascinating world of radioactivity and discover the different types of radiation: alpha, beta, and gamma. Learn about their properties, including their ionizing capabilities and penetration abilities. This overview explains the composition of beta radiation, the process of beta decay, and how radiation is harnessed in everyday applications such as smoke detectors, irradiation, radiotherapy, and thickness gauges. Additionally, uncover the concept of half-life with a practical example involving strontium-90 and its activity over time.

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Understanding Radiation: Types, Properties, and Applications in Technology

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Presentation Transcript

  1. Radioactivity

  2. What is the most ionising form of radiation? • What is the least penetrating form of radiation? • What is beta radiation made of? • What happens to a neutron during beta decay? Alpha Alpha An electron. It turns into a proton and an electron.

  3. Which type of radiation is used in the following? • Smoke Detectors • Irradiation • Tracing in Radiotherapy • Thickness Gauges Alpha Gamma Gamma Beta

  4. The activity of a sample of strontium-90 falls from 2000 Bqto 250 Bq over 87 years. What is the half life? • The activity of a sample of strontium-90 is 100 Bq. What will the activity be after 58 years? 29 Years 25 Bq

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