Fourier

x

f (x)

L

f (x) L

fn

Fourier

x

f (x)

L

k

x

L

k

Fourier

h, k, l : kx

ky

kz

n1, n2, n3 :

h1, h2, h3 :

m

Fourier

! Fourier

! ! !

A, B, COOA, OB, OC

n1, n2, n3 :

O A

B

C

d

d

h1, h2, h3

d

dm

dm

m :

dm

h1, h2, h3

m

l :

l

m

A, B, COOA, OB, OC

O A

B

C

d

h1, h2, h3

h1, h2, h3 m h1=mh1, h2=mh2, h3=mh3 (h1, h2, h3 )

ABC m

(h k j l)

c

a

x

y

O A

a A

(h k j l)

fcc

a !

b !

c !

x y

z

bcc

a !

b !

c !

a a

X

elastic inelastic

X ! ! E

(de Braglie) h : p

m = 9.1x10-31 kg mn = 1.7x10-27 kg !(He) m = 4mn

(=0) c :

! = 1 150 eV 0.082 eV ! 0.02 eV 12000 eV

10 eV ~ 1 keV (10~50 )

10 meV ~ 1 eV (10~50 )

1 keV ~ 100 keV (~mm)

X c = 3x108 m/s

" [m]

f

h = 6.6x10-34 Js

1 1n 10n 100n 1#10#100#1m 1cm 10cm 1m

300M 3G 30G 300G 3T

X

100 1k 10k 1.7 3

f [Hz]

E [eV]

400n 700n

X X

30T

anode

(Cu)(Mo)

X

X

0.25 1.5 []

K$#

K!#

K

L M

K!# K$#

X

Q

B

P

P

PB

Q

B

=

!

Laue

N=20

(Ewalt) k

X

kmin < k < kmax X

kmin

kmax

%#

d

%#

%1#%2#

%1= %2

!

h, k, l :

= 2 ( h + k + l = )

0 ( h + k + l = )

(001)

(110)

x y

z

a

"

"

" Shkl = 0