5.2 Radioactivity (Detection of radioactivity, Radioactive decay, Fission and fusion (1/2) ) скачать в хорошем качестве

5.2 Radioactivity (Detection of radioactivity, Radioactive decay, Fission and fusion (1/2) )

Detect, decay, and unleash nuclear power! 💡 In this video, we cover: 5.2.1 Detection of radioactivity 🔍 1. Describe the detection of alpha particles (α-particles) using a cloud chamber or spark counter and the detection of beta particles (β- particles) (β-particles will be taken to refer to β−) and gamma radiation (γ-radiation) by using a Geiger-Müller tube and counter 2. Use count rate measured in counts/s or counts/minute 3. Know what is meant by background radiation 4. Know the sources that make a significant contribution to background radiation including: (a) radon gas (in the air) (b) rocks and buildings (c) food and drink (d) cosmic rays 5. Use measurements of background radiation to determine a corrected count rate 5.2.3: Radioactive decay: understand the process and equations 🔄 1. Know that radioactive decay is a change in an unstable nucleus that can result in the emission of α-particles or β-particles and/or γ- radiation and know that these changes are spontaneous and random 2. Use decay equations, using nuclide notation, to show the emission of α- particles, β-particles and γ-radiation 5.2.4 Fission and fusion: the science behind nuclear reactions ⚛️ 1. Describe the process of fusion as the formation of a larger nucleus by combining two smaller nuclei with the release of energy, and recognise fusion as the energy source for stars 2. Describe the process of fission when a nucleus, such as uranium-235 (U-235), absorbs a neutron and produces daughter nuclei and two or more neutrons with the release of energy 3. Explain how the neutrons produced in fission create a chain reaction and that this is controlled chain reaction. Get examples and insights for O-level Physics 5054 and IGCSE 0625! 💪 👍 Like, share, subscribe! #OlevelPhysics #IGCSEPhysics #NuclearPhysics