QM 3

Question 1

assume H’(t) is ___ compared to H0

Answer 1

weak

Question 2

if a function oscillates more rapidly then its contribution to the transition is ___

Answer 2

weaker

Question 3

dipole approximation

Answer 3

over the extent of the wavefunction of the electron in the atom the E0 does not change

Question 4

electron de-excitation

Answer 4

emission of photon stimulated by radiation

Question 5

stimulated emission

Answer 5

stimulated by incoming photon then de-excited emitting ab second photon

Question 6

an atom in an excited state stays there unless ___

Answer 6

disturbed

Question 7

an atom in thermal equilibrium with photon gas will do one of three things, rates of which must balance

Answer 7

electrons will be excited, absorbing photons
electrons will be de-excited, stimulated by photon gas
electrons will spontaneously de-excite

Question 8

photons of blackbody radiation are ___ along any direction

Answer 8

polarised