Flashcards
Particles and Radiation
Cards in this deck (36)
- 1What range is the strong force attractive?3 fentometers and 0.5 fentometers
- 2What is the symbol equation for beta minus decay?
- 3What is the symbol equation for beta plus decay?
- 4What is the symbol equation for alpha decay?
- 5How do antiparticles' rest mass and charges and quantum numbers compare to their normal matter counterparts?Same Rest Mass / Rest Energy
Opposite Charge
Opposite Quantum Numbers - 6What happens when a particle and it's the corresponding antiparticle collide+ They annihilate each other
+ Two photons are created
( The photons must go in opposite directions to conserve momentum ) - 7When does pair production occurWhen a photon interacts with a nucleus
- 8What occurs in pair productionThe photon's energy is converted into the mass of a particle and it's corresponding antiparticle
- 9What is the gauge boson for the strong interaction?Pion (π+, π-, π0)
- 10What types of particles does the strong interaction affect?Hadrons
- 11What is the gauge boson for the electromagnetic interaction?Virtual Photon ( γ )
- 12What types of particles does the electromagnetic interaction effect?Charged Particles
- 13What is the gauge boson for the weak interaction?W+, W-
- 14What types of particles does the weak interaction effect?All Particles
- 15What happens in the Electron Capture?A proton captures an inner shell electron and turns into a neutron and electron neutrino.
- 16What gauge boson is exchanged in electron capture?W+ Boson
- 17What happens in an electron-proton collision?A proton and an electron collide. The electron neutrino and the proton turns into a neutron.
- 18What gauge boson is exchanged in an electron-proton collision?W- Boson
- 19What makes up a Baryon?3 Quarks
- 20What makes up an Anti-Baryon?3 Anti-Quarks
- 21What do all Baryons decay into?Proton
- 22What are Mesons made up of?A quark and anti-quark pair
- 23What do all Mesons decay into?Pions
- 24What is the only force that the fundamental particle 'Leptons' interact with?The weak interaction
- 25Four examples of LeptonsElectrons
Muons
Electron Neutrino
Muon Neutrino - 26Two examples of BaryonsProtons
Neutrons - 27Two examples of MesonsPions
Kaons - 28What 5 properties are conserved in particle interactions?Charge
Baryon Number
Muon Number
Lepton Number
Strangeness - 29What is the photoelectric effect?The process by which a metal with photons incident on it emits electrons ( In the form of Photoelectrons)
- 30What condition is required for photoelectrons to be released in the photoelectric effect?The radiation's frequency must be greater than the threshold frequency
- 31What is the threshold frequency?The frequency at which the photon has energy equal to the work function
- 32Define work functionThe minimum amount of energy needed for an electron to be emitted
- 33What affects the maximum kinetic energy of a photoelectron?Frequency of the incident photons
- 34Define ionisationWhen an electron is removed from an atom
- 35Define excitationThe movement of electrons up to a higher energy level- an electron absorbs a photon, transferring energy to it.
- 36What happens when an electron de-excites?It moves down in energy levels and emits a photon.
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- A level Physics Flashcards on Particles and Radiation, created by Ben Donovan on 18/09/2019.
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- Ben Donovan
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