تم الحل ✓
categoryفيزياء
schoolبكالوريوس
event_available2026-07-14
السؤال
Transcribed Image Text:
Consider a particle of mass m in a finite square well with potential energy
-Vo for a≤x≤+a
where
V (x)=
0
Note that a is a positive constant.
otherwise,
2h2
Vo
ma2
(a) Solve the TISE. You should find that there are two sets of eigenfunctions. For one set, each
eigenfunction has the form
Ale+
₁(x)=C₁ cos la
Alex
for 2-a
for a≤x≤ta
for x+a,
while for the other set, each eigenfunction has the form
2(x)=
Aze+k
D2 sin la
for 2-a
fora≤ x ≤+a
-Age
511
where
2m E
h
for r+a,
2m (Vo-E)
Note that {A1, C1, A2, D2) are constants to be determined.
h
(b) Show that
Y
-{
X tan X
for the case of 1 (2)
-X cot X
for the case of 2(2),
where X := la and Y = ka are dimensionless quantities.
(c) How many bound states are there here? Find the allowed mechanical energies, expressing each
one as a multiple of h²/(ma²).
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