Nuclear Physics Flashcards
(31 cards)
What is the strong force?
Holds the nucleus together, so particles are at specific distances from one another.
When is the strong force attractive?
Between 0.5-3fm, to overcome electrostatic repulsion between protons
When is the strong force repulsive?
Below 0.5fm
What is spin?
property of a particle related to its intrinsic angular momentum
What is a lepton?
fundamental particle that doesn’t experience the nuclear strong force
What are hadrons?
particles that experience nuclear strong force and decay by weak nuclear force
What happens when a particle finds its antiparticle?
They undergo annihilation, destroying each other and emitting two equal photons as energy
What is charge on an up quark?
+2/3
What is the Baryon number on a quark
1/3
What’s the strangeness of a strange quark?
-1
What is the charge on a down quark?
-1/3
What is the quark composition of a proton
pud-u-like, uud
What is the quark composition of a neutron?
dunderhead, ddu
What field does a photon mediate?
Electromagnetic field
What field does the gluon mediate?
Nuclear strong force
What field does the W+ boson mediate and what charge?
Weak nuclear field, +1
What field does the W- boson mediate and what charge?
Weak nuclear field, -1
What field does the Z boson mediate and what charge?
Weak nuclear field, 0
What is the spin on a lepton?
±1/2
What is the spin on a quark?
±1/2
What is the spin on a boson?
integer
What is the spin on a meson?
0
What is the charge on a neutrino?
0
What is pair production?
When energy is converted into mass, and new particles are made, each particle has its corresponding antiparticle
