Diffraction by solids, Chemistry

Assignment Help:

DIFFRACTION BY SOLIDS

Diffraction performs when a wave interacts with a lattice whose dimensions are of the same order of magnitude as that of the wavelength of the waves. The lattice scatters the radiation, and the scattered radiation from one point interferes with the radiation from others so as to either reduce it (destructive interference), or enhance the amplitude of the radiation (constructive interference). The pattern of destructive and constructive interference yields information about molecular and crystal structure.

1228_diffraction by solid.png

 

Fig.1. Constructive (a) and destructive (b) interference of two

waves.

In the case of solids, this wavelength must be of the same order as the crystal lattice spacing (ca. 0.1nm), and there are three primary types of radiation which are used for structural studies of solids. The most commonly used radiation, X-rays, have wavelengths of the order of 0.15 nm, and in the course of diffraction studies are scattered by the electron density of the molecule.


Related Discussions:- Diffraction by solids

Explain a first order reaction, A first order reaction takes 69.3 minutes f...

A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.

Properties of bi-phenyl - hydrocarbon, Properties of Bi-phenyl - Hydrocarbo...

Properties of Bi-phenyl - Hydrocarbon Bi-phenyl is a colourless solid, melting point 71°C. It goes through usual electrophilic replacement reactions. As aryl set are electron w

Explain quantum numbers, Quantum numbers explain values of total conserved...

Quantum numbers explain values of total conserved quantities in the dynamics of the quantum system. possibly the most peculiar part of quantum mechanics is the quantization of obs

Luciferase/Luciferin Reaction Optimized Quantities, How would I go about cr...

How would I go about creating a luciferase and luciferin reaction? How do I find optimized quantity ratios? If I buy dehydrated luciferin or luciferase, how would I need to rehydra

S block elements.., lithium and beryllium markedly differ from other member...

lithium and beryllium markedly differ from other members of their respective groups.

Determine the atomic radius of FCC, Atomic radius (r):  As we known, t...

Atomic radius (r):  As we known, the corner atoms do not touch each other. But, each corner atom touches the face centered atoms with the diagonal of the face of the cube as s

On the basis of application how are dyes classified, On the basis of applic...

On the basis of application, how are dyes classified? Describe essential features of any two of them.

The total magnetic quantum numbers for d-orbital is given, The total magnet...

The total magnetic quantum numbers for d-orbital is given by: (1) 2        (2) 0, ± 1, ± 2      (3) 0, 1, 2           (4) 5 ans:  5

Properties of allyl iodide - hydrocarbon, Properties of Allyl iodide or 3-i...

Properties of Allyl iodide or 3-iodopropene-1, ICH 2 CH = CH 2 Allyl iodide is a colourless liquid. It get boils at 103.1°C.The halogen atom in allyl iodide is fairly reactive

Estimate the enthalpy of fusion of sulphuric acid, In the industrial produc...

In the industrial production of sulphuric acid, SO 3 is carefully reacted with water: SO 3 + H 2 O → H 2 SO 4 any excess SO 3 giving rise to what is called oleum, a solut

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd