In beta-plus decay, a proton decays into three other particles. Write a nuclear equation for this process.
An experimental physicist is given three unlabelled, collimated radioactive sources in a research lab.
They are told that each source emits only one type of radiation: one is a pure alpha (α\alphaα) emitter, one is a pure beta-plus (β+\beta^+β+) emitter, and one is a pure gamma (γ\gammaγ) emitter.
The physicist has access to the following apparatus:
Explain how the physicist can safely use this equipment to identify which radiation is emitted by each of the three sources.
90 exam-style questions on OCR A A Level Physics Nuclear and particle physics, covering The nuclear atom, Fundamental particles, Radioactivity, and Nuclear fission and fusion. Each one has a worked solution and a mark scheme showing where the marks go.