Advertisement Remove all ads

‘Crystal Acts as Three Dimensional Grating for X-rays’, Explain. - Applied Physics 1

Short Note

‘Crystal acts as three dimensional grating for X-rays’, explain.

Advertisement Remove all ads

Solution

⦁ Since the wavelength of X-rays is in the order of 1 A° , ordinary grating which has 6000 lines per cm cannot produce an appreciable diffraction pattern of X-rays.
⦁ Therefore, in the case of X-rays, instead of ordinary grating crystals gratings are used. In crystal grating atoms are arranged at lattice points in a regular fashion.
⦁ These arranged atoms correspond to grating lines and the distance between two atoms is the grating element, in the order of le cm.
⦁ The crystal grating differs from optical grating in such a way that in crystal grating, the atomic centres are not in one plane but are distributed in 3-dimensional space. But in optical grating, they are limited to one plane.
⦁ Hence, crystal act as three dimensional grating with X-rays

 

Concept: X-ray Diffraction
  Is there an error in this question or solution?
Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×