Flashcards
Physics 1 - Particles and Radiation
Cards in this deck (31)
- 1Quarks make up... Types of quark Quarks have...hadrons
up, down, strange
antiquarks - 2Beta minus decay p -> n + e+ + Ve
- 3Larger the gauge boson mass...shorter the range of the force
- 4Gravity Gauge boson: Particles affected:Graviton
All types - 5Weak Gauge boson: Particles affected:W+, W-, Z0
All types - 6Electromagnetic Gauge boson: Particles affected:Photon
Charged particles - 7Strong Force Gauge Boson: Particles affected:Gluon
Hadrons only - 84 fundamental forces:Strong, EM, Weak, Gravity
- 9Forces are caused by...particle exchange
- 104 properties always conserved:Charge
Baryon number
Strangeness
Lepton number (individual types) - 11The weak interaction changes... Egquark type
beta decay - 12Mesons are made up of...a quark and an antiquark
- 13Strange quark Charge: Baryon number: Strangeness:-1/3
+1/3
-1 - 14Down Quark Charge: Baryon number: Strangeness:-1/3
+1/3
0 - 15Up quark Charge: Baryon Number: Strangeness:+2/3
+1/3
0 - 16Baryons are made of... Proton? Neutron3 quarks
uud
udd - 17Atoms are made up of... Protons and neutrons are... Proton & Neutron relative mass... Electron Relative mass... Proton Number...Protons, Neutrons and Electrons
Nucleons
1
0.0005
Z, defines the element - 18Conservation of leptons...Types of leptons have to be conserved separately
- 19All leptons come with... Mass? Charge? Take part in the...neutrinos
0
0
weak interaction - 20Leptons interact via... Leptons: Unstable leptons... Decay to...weak interaction
Electron, muon, tau
muon, tau
electrons - 21Two types of hadron: Baryons... Mesons...Baryon, Meson
Nucleons
Pions, Kaons - 22All mesons are... Baryon number = Mesons interact with baryons via...unstable
0
Strong nuclear force - 23When a neutron decays it forms...proton, electron, antineutrino
- 24Only stable baryon... All baryons except protons... Opposite of baryons... Baryon number...proton
decay to a proton
anti baryons
is always conserved - 25Hadrons feel the... Made up of... Two types...strong nuclear force
quarks
baryons and mesons - 26Opposite of pair production... Why?annihilation
When particle meets antiparticle - 27Every particle has an... The charge is... Pair production is... Usually getantiparticle
opposite
a particle-antiparticle pair is produced from a single photon
Electron-positron pairs - low mass - 28Beta emission happens in... It's the emission of... Neutron rich? When a beta particle is emitted...Neutron rich nuclei
an electron and an antineutrino
More neutrons than protons
Z increases by 1, A stays the same
Neutron changes to a proton - 29Alpha Emission happens in... The nuclei are... When an alpha particle is emitted:very big nuclei
too big for the strong force to stabilise
Z decreases by 2, A decreases by 4 - 30The strong nuclear force... Stronger than... Range =binds nucleons together
electrostatic force
Repulsive until 0.5fm, attractive until 3 - 31In a neutral atom... Nucleon number... Isotopes have... The more neutrons to protons... Unstable nuclei may be...Electrons = protons
Total protons and neutrons
Same proton No., different nucleon No.
The more unstable the nucleus
Radioactive
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- Flashcards on Physics 1 - Particles and Radiation, created by James Hamilton on 17/05/2013.
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- James Hamilton
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