Particle phys

What is nuclide / isotopic notation ?

^A Z X

What can always be said about the photon produced when an atom absorbs a blue light photon

The photon produced will have a lower energy than that absorbed as energy is always dissipated in the excitation process

What decays into Pions ?

Kaons

What is special about the creation of Strange particles?

They must be created in pairs as strangeness is always conserved in strong interactions.

How is matter similar to its antimatter ?

Same mass

What is the "equation" for energy levels ?

hf = E1 - E2 where E1 is the higher-energy level

If the gap size is increased or the velocity of the electron is increased, how does the radius of the circle change ?

Why?

decreases:

Larger gap size = less comparable in size = smaller angle of diffraction

Greater velocity = greater momentum = smaller wavelength = less comparable in size = smaller angle of diffraction

Which interaction does not have attractive/ repulsive properties ?

Weak nuclear

Which fundamental forces have infinite range ?

Electromagnetic, gravity

What can be said about the SNF within a nucleus?

Dominates / greatest in magnitude

How can you determine, at A-level, if a reaction should be strong or weak?

If they're all hadrons, it is most likely strong.

If it appears to be trying to make a a pair of strange particles then it is probably strong.

If it contains leptons or a change in quark flavour then it is weak.

Whats the difference between the strong interaction and the SNF

strong interaction is the force between quarks.

SNF is the residual force between nucleons

How does electron diffraction experiements show the wave nature of particles

They produce an interference pattern which otherwise wouldnt be produced and would instead appear as a blur as the electrons bounced off of eachother