1 Distribution (de Maxwell) des vitesses

o4
N
T v
P2(v)
m(~r, ~p)
T N
E(~r, ~p)?
E P (~r, ~p)d~rd~p
(~r, ~p)d~rd~p
P1(~v)d3~v ~v
d3~v =dvxdvydvz
θ, φ P2(v)dv
v, dv P2(v)
P2(v)
vM< v >
< E >
T= 300K,
O2
λ
∆λ
T.

B T
m=±1
2
B
Em=−g m µBB
g= 2 µB=e~
2me= 0,927.10−23J/T
B
T
P+P−m=
±1/2
B= 10−3T esla B
T,
T < M >
N < M > (x)x
< M >'χB
χ
χ