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Notes, flashcards, videos and past exam questions by topic for AQA Physics A-Level Section 2 - Particles and Radiation.
At the centre of an atom is a nucleus formed of protons and neutrons, therefore they are known as nucleons, whereas electrons orbit the nucleus in shells. The specific charge of a particle is the charge-mass ratio, and is calculated by dividing a particle’s charge by its mass.
Quarks are a type of fundamental particle which combine to form hadrons such as protons and neutrons. There are six flavours (types) of quark: up, down, top, bottom, strange, and
These particles have a variety of spins, both integral and half-integral, and their masses range from the value of 135MeV/c 2 for the neutral pion π 0 to 11020MeV/c 2 for one of the upsilon (heavy quark) states.
Revision notes on 2.2.5 Quarks & Antiquarks for the AQA A Level Physics syllabus, written by the Physics experts at Save My Exams.
It describes the concepts of the Fundamental Particles and Interactions chart: quarks, neutrinos, the fundamental forces, the history, as well as the design and use of particle accelerators and detectors. It has separate student and teacher worksheets.
The standard model of particle physics is a mathematical model that describes electromagnetism, the strong and weak nuclear forces, and the Higgs mechanism.
