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

#title.simple and steam distillation., name 5 organic compound that can be ...

name 5 organic compound that can be purify using simple distillation

Normality, #question.how you can prepare 5 normal solution of potassium nit...

#question.how you can prepare 5 normal solution of potassium nitrate in 2 litre volume?

Determine concentrations of solutions, Q.How can we determine Concentration...

Q.How can we determine Concentrations of Solutions? Ans. The concentration of a solution is the quantitative expression of the amount of solute dissolved in the solution.

Molar conductivity, What do you understand by molar conductivity at infinit...

What do you understand by molar conductivity at infinite dilution

What is meant by entropy driven reaction, What is meant by entropy driven r...

What is meant by entropy driven reaction? How can a reaction with positive changes of enthalpy and entropy are made entropy driven

why do soaps not work under hard water , The Ca 2+ and Mg 2+ ions in har...

The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.

Basic radical analysis, why original solution is prepared during basic radi...

why original solution is prepared during basic radical analysis

Ionization energy of group, Ionization energy of group: Why does Ioniz...

Ionization energy of group: Why does Ionization energy of group IIA elements decrease from Be to Ra?  A. As the atomic size increases from Be to Ra, the attraction between

The set of quantum numbers not applicable an electron atom, The set of quan...

The set of quantum numbers not applicable for an electron in an atom is: (1) n= 1, l=1, m 1 = 1, m s = +1/2       (2) n= 1, l=0, m 1 = 0, m s = +1/2       (3) n= 1, l=0 m

Solid state, What are laws of crystallography? How does it help in study of...

What are laws of crystallography? How does it help in study of crystal structure

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