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 toluene, Explain Toluene Toluene has added stability associate...

Explain Toluene Toluene has added stability associated with aromaticity; compound A, although conjugated, is not aromatic. Because any equilibrium favours the more stable comp

General organic chemistry, General Organic Chemistry Carbon is an neces...

General Organic Chemistry Carbon is an necessary element of organic substance; it has four electrons in its outer most shell. As per to the ground state electronic arrangeme

Preparation of hot souffle?, Q. Preparation of hot souffle ? i) Melt 1...

Q. Preparation of hot souffle ? i) Melt 12 g butter in a saucepan. Add 12 g flour and stir cook for 1-2 minutes. ii) Gradually add ¼ cup of scalded milk stirring continuou

Early theories of matter, Q. Early Theories of Matter? In ancient Greec...

Q. Early Theories of Matter? In ancient Greece philosophers discussed the nature of matter. The philosopher Democritus held that matter was composed of elementary particles cal

Alcohols, methods for preparing trihydric alcohols

methods for preparing trihydric alcohols

Predominant phosphate species present in buffers solution, In lab, you're h...

In lab, you're having fun along with buffers based onto a 0.1 M solution of sodium phosphate at pH7.0.  Into this system, there are three of pK A s as:  12.7, 7.21 and 2.12.

WHEAT FLOUR, WHY WE CALCULATE GERM OIL ACIDITY OF WHEAT FLOUR?

WHY WE CALCULATE GERM OIL ACIDITY OF WHEAT FLOUR?

Bioinorganic chemistry, BIOINORGANIC CHEMISTRY Life is sometimes thought...

BIOINORGANIC CHEMISTRY Life is sometimes thought of as 'carbon chemistry', but around 25 components are essential for life. It is normal to divide these into trace elements an

Longest chain rule - iupac system of nomenclature, Longest chain Rule - IUP...

Longest chain Rule - IUPAC system of nomenclature The primary step in naming an organic compound is to choose the longest continuous chain of carbon atoms that may or may not

Chem project, need to know common methods of preparing acetone/propanone. N...

need to know common methods of preparing acetone/propanone. Need to include chemical equation for reaction that produces that molecule.

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