Pair Production
- Created by: nerdkoala
- Created on: 02-01-15 12:33
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- Pair Production
- Magnetic field
- Magnetic field is constantly down
- Motion is perpendicular to the current (movement of electrons)
- Electron will therefore constantly move at 90°, circular motion
- Loss of Ek through movement causes a weaker centripetal force
- Particle will spiral
- Loss of Ek through movement causes a weaker centripetal force
- Calculations
- E=mc^2
- Double the mass of the produced particle multiplied by the speed of light squared = minimum energy required
- E=hf
- Is the frequency of photon needed
- C=f multiplied by wavelength
- so wavelength of photon is c/f
- E=mc^2
- Between charged plates
- Particle attracts to the charged plate
- E.g electron to the cathode, positron to the anode
- Faster moving particles
- Influenced by the plates for less time
- Pulls the particle toward the plate but they do not collide
- Influenced by the plates for less time
- Uncharged particles are not affected
- Particle attracts to the charged plate
- Conditions
- Photon must pass close to a massive object
- Photon must have at least the Eo of the produced particle and antiparticle
- Any 'spare' energy will become Ek
- Magnetic field
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