OCR A level Physics: Half-life and Activity

OCR A level Physics: Radioactivity

OCR A level Physics: Chapter 25 Radioactivity is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 25.1 Radioactivity 25.2 Nuclear decay equations 25.3 Half-life and Activity 25.4 Radioactive Decay Calculations 25.5 Modelling Radioactive Decay 25.6 Radioactive Dating * Types of ionising radiation (alpha, beta-plus/beta-minus, gamma) * Penetration power and ionising power * Detecting radiation with a Geiger (GM tube) counter * Background radiation and correct count rates * Electric and magnetic fields affect ionising radiation * Cloud chambers * Typical speeds of radiation produced form nuclear decays * Conservation rules for nuclear decays * Nuclear notation * Alpha decays * Beta-minus and beat-plus decays * Gamma decays * Decay chains * The reason why radioactive decays are considered random and spontaneous * Rolling dice being a good analogue for radioactive decays * Definition of half-life * Determining half-life from a graph. * Calculating half-life from a table of data. * Activity of a sample in Bq * The decay constant derivation * Decay constant and half-life * Using exponentials to calculate activity and number of nuclei present * Solving Differential Equations (beyond A-level Physics course) * Iterative Method * Selecting appropriate time intervals * Comparing answers from the iterative method and exact solution. * State what isotopes of carbon are used in carbon dating. * Explain how carbon dating works. * Calculate the age of objects with carbon dating.