Particles-Exam mistakes-1

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  • Created by: tahliaD
  • Created on: 20-10-15 13:04
What is the quark composition of the positive pion?
u(anti)d
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Name a stable baryon
Proton
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Which is the most stable baryon?
Proton
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Name some other stable sub-atomic particles
Electrons, positrons, neutrino, antineutrino
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In what interaction is strangeness not conserved?
Weak
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Briefly define what is meant by an 'excited' particle
A particle which is at a greater energy level than it's ground state
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When a question states that a beta-minus particle has been emitted what should you think about?
Beta-minus decay, that a neutron has been turned into a proton, beta-minus particles are the same as electrons
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If an electron collides with a neutral atom what might happen?
Ionisation may occur
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What does ionisation mean in this sense?
That another electron has been knocked out of the atom by the other electron
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How does this change the atom?
The atom becomes a positively charged ion and loses an electron
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What particles are present after this collison?
A positively charged ion, 2 electrons
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What is the exchange particle for the gravitational force?
graviton
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What is the exchange particle for the strong force?
gluon
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What is the exchange particle for the weak force?
w+, w-. z
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What is the exchange particle for the electromagnetic force?
photon
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Other cards in this set

Card 2

Front

Name a stable baryon

Back

Proton

Card 3

Front

Which is the most stable baryon?

Back

Preview of the front of card 3

Card 4

Front

Name some other stable sub-atomic particles

Back

Preview of the front of card 4

Card 5

Front

In what interaction is strangeness not conserved?

Back

Preview of the front of card 5
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