O'Reilly logo

Engineering Physics by S. Mani Naidu

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

3.7 Laue method

In Laue method, a narrow beam of white X-rays [usually in the wavelength range, 0.2 to 2.0 Å] is obtained by passing X-rays through a collimator ‘C’. This beam is allowed to fall on a stationary single crystal ‘S’ as shown in Fig. 3.13(a). The crystal act as a 3-dimensional diffraction grating to the incident beam. The processes of reflection of X-rays by crystal planes is considered as X-ray diffraction. The diffraction phenomenon satisfies Bragg’s law, nλ = 2d sin θ. where n = 1, 2, 3, … represent the order of diffraction, λ = wavelength of diffracted X-rays from a system of crystal planes with interplanar spacing ‘d’ and θ = glancing angle i.e., the angle made by X-rays with a crystal plane. As the crystal is not rotated, so, ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required