Particles And Antiparticles Flashcards
What do positrons have
Identical MAS (and ENERGY in MeV) Carry OPPOSITE charge
When did the positron turn up
Cosmic ray experiment
Each particle has a corresponding antiparticle with the same …. But …. Charge
Mass
Opposite
State the antiparticles on the following Proton Neutron Electron Electron-neutrino Neutrino
Antiproton Antineutron Positron Electron-antineutrino Antineutrino
You can create matter and antimatter from what
Energy
What does the equivalence of energy and mass state
ENERGY can turn into MASS and MASS can turn into ENERGY if you know how
When energy is converted into mass you get …. Amounts of matter and antimatter
Equal
Fire 2 protons at each other at a high speed and you’ll end up with a lot of energy at the point of impact.
This energy might be converted into more what
Particles
If an extra proton is formed then there will always be a what to go with it
Antiproton
Pair production can only happen if the game ray photon has enough what
ENERGY to produce that much MASS
Each particle-antiparticle pair is produced from what
Single photon
Pair production tends to happen near a nucleus. What does this help to conserve
Momentum
What is usually produced in pair production
Electron-positron
Why are electron-positron pairs normally produced
Relatively low mass- less energy needed
What is the opposite of pair-production
Annihilation
