Chapter 11, Problem 128RQ

Interpretation Introduction

Interpretation:

The interplanar distances between the layers of atoms related to $\theta =20.0°,\text{ 27}\text{.4}°\text{, and 35}\text{.8}°$, different angles of diffraction of the X-ray, with the wavelength $141\text{ pm}$, are to be determined.

Concept Information:

Bragg equation is the equation that gives the relation between the wavelength of X-rays, $\lambda$, and the distance between the layers of the atoms, $d$, in the crystal and the relative angle of reflection or diffraction, $\theta$, from the layer of the atoms, that is, $n\lambda =2d\sin \theta$.