Pair production
What Pair production means in Physics A-Level, as defined for AQA, OCR.
Definitions of Pair production
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Reference: AQA
The strong interaction creates a strange quark and a strange antiquark together, so the total strangeness of the products starts at zero.
Occurs only when photon energy exceeds about 1.02 MeV, creating an electron–positron pair near a nucleus.
A photon with sufficient energy can produce a particle–antiparticle pair.
Topics that use Pair production
- Classification of particles (AQA A-Level)
- Particles, antiparticles and photons (AQA A-Level)
- Nuclear fission and fusion (OCR A-Level)
Related terms
- Conservation laws in particle interactions
- Alpha and beta decay
- Annihilation
- Annihilation energy calculations
- Antiparticle
- Barium
- Baryon number
- Baryons
Using Pair production in the exam
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