Nuclear Physics

What is Specific Charge?
Charge to mass ratio of a particle
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what is the range for the strong nuclear force?
0.5fm - 3fm
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what distance causes the strong nuclear force to be attractive?
> 0.5fm
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what does the strong nuclear force do?
holds the nucleus together
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what happens at B- decay?
electron and antineutrino are released and neutron turns into a proton in a "neutron rich" nucleus
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what does the antineutrino do in B- decay?
carries some energy and momentum
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what are photons?
packets of EM radiation
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what is pair production?
when particle - antiparticle pair is produced from a single photon. hf=2E
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what is annihilation?
when particle and antiparticle meet, all the mass gets converted to energy hf=E
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what are forces caused by?
particle exchange
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why are forces caused by particle exchange?
you can't have instantaneous action at a distance
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what is the proper name for exchange particles?
Bosons
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what are the 4 fundamental forces?
electromagnetic, weak, strong and gravity
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what's the gauge boson for electromagnetic force?
virtual photon
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what's the gauge boson for strong nuclear force?
gluon
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what's the gauge boson for weak nuclear force?
W+/W- or Z
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what's the gauge boson for gravity?
graviton
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what group of particles are the only ones that can feel the strong nuclear force?
Hadrons
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what happens in electron capture?
proton turns into a neutron, releases W+ boson which converts e- to V.
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what are hadrons made of?
quarks
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what is the only stable baryon?
proton
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what's the baryon number for anti baryons?
-1
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what do kaons decay into?
pions
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what interaction do leptons interact with other particles through?
weak, gravity and electromagnetic
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what do muons decay into?
electrons
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what is the only interaction neutrinos can take part in?
Weak
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give an example of a strange particle
Kaons - created through strong but decay via the weak
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what interaction is strangeness always conserved in?
strong
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what's the purpose of the weak interaction?
causes decay by changing quark type
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what's always conserved in particle interactions?
Charge, Baryon number, Energy and Momentum
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is there such thing as a free quark?
no, this is quark confinement
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Other cards in this set

Card 2

Front

what is the range for the strong nuclear force?

Back

0.5fm - 3fm

Card 3

Front

what distance causes the strong nuclear force to be attractive?

Back

Preview of the front of card 3

Card 4

Front

what does the strong nuclear force do?

Back

Preview of the front of card 4

Card 5

Front

what happens at B- decay?

Back

Preview of the front of card 5
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