南邮原子物理作业答案

第一次

Question 1

If one did the Franck-Hertz experiment on atomic hydrogen vapour, which lines would one see if the maximum energy of the electrons were 12.6eV? Give theλvalues.

Question2

If an electron in hydrogen atom goes from the ground state to the state with n=3.

a) Give the energy of the atom absorbed in this transition.

b) Which lines would one see when the atom transmits from the excited state with n=3 to the ground state? Give theλvalues.

第二次

第三次4.13

Question 1

Calculate the angle between the total and the orbital angular momenta in a D4

3/2

state.

Question 2

In a 3P state, that deduced from the electronic configuration 2p3d for the case of LS coupling,

a) Calculate the angle between p?

l1and p?l

b) Calculate the angle between p?

s1and p?s

Question 3

Ignoring spin-orbit coupling, determine the number of possible terms of an excited carbon atom with the electronic configuration 1s22s22p3p?

第四次4.20

Question 1

Explain the symbols for the 33

→transition in sodium. How many

F D

lines can be expected in the spectrum? Give the select

rules.

Question 2

a) Discuss a two-electron system with a 2p and a 3d electron for the case of LS coupling and show that the number of possible states are the same as in jj coupling.

b) Calculate the ground state of the electron configuration 23p d(in LS coupling).

第五次4.26

第六次4.27

第七次5.12