blob: 1e605132ae1fae00f87cd254775c73d22af72ba7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
clear
//
//
//
//Variable declaration
h=1
k=1
l=1 //miller indices
n=4
A=107.87 //atomic weight(amu)
N=10500*6.052*10**26 //density(kg/m**3)
theta=(19+(12/60))*%pi/180 //angle(radian)
r=1.278*10**-10 //radius(m)
hp=6.625*10**-34 //plancks constant(Js)
c=3*10**8 //velocity of light(m/sec)
e=1.6*10**-19 //charge of electron(coulomb)
//Calculation
a=(n*A/N)**(1/3) //lattice constant(m)
d=a/sqrt(h**2+k**2+l**2) //interplanar spacing(m)
lamda=2*d*sin(theta) //wavelength of X-rays(m)
E=hp*c/(e*lamda) //energy of X-rays(eV)
//Result
printf("\n wavelength of X-rays is %0.3f angstrom",lamda*10**10)
printf("\n answer in the book varies due to rounding off errors")
printf("\n energy of X-rays is %0.0f *10**3 eV",E/10**3)
|
