E V2兀 =0,±1,±2 8兀2 M 1035 2rexp/± 8兀2mR 1037 1038 1042(E) 1043(B) 1044势能V=0 动能En=n2h2 小12ma2kT 2a√3mkT h h h2(n2+4n2) 1045(1).Enn=En+E 32ml En,(以 为单位E = I m h 2 2 2 8 ,  () = 2 1 e im m=0,±1,±2,... (2) < M ˆ > = 0 1035  () = 2 1 exp[±i] E= 2 2 2 2 8 mR h   =0,1,2,... 1036 A 1037 D 1038 1039 (1) B (2) A 1041 (C) 1042 (E) 1043 (B) 1044 势能 V= 0 动能 En= 2 2 2 8ma n h = 2 1 mv2 = 2 3 kT n 2= 2 2 12 h ma kT n = h 2a 3mkT 1045 （1）. nx ny E , = nx E + ny E = 2 2 2 2 32 ( 4 ) ml h nx + ny （2）. nx ny nx ny E , (以 2 2 32ml h 为单位)