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

Chemistry, 4 NH3 + 5 O2 --> 4 NO + 6 H2O How many grams of NO are actually ...

4 NH3 + 5 O2 --> 4 NO + 6 H2O How many grams of NO are actually produced when 60.02 grams of ammonia are allowed to react with 96.00 grams of oxygen? ((This is a limiting reactant

What are the physical properties of nitric acid, Q. What are the Physical P...

Q. What are the Physical Properties of Nitric Acid? Ans. Nitric acid (HNO 3 ) may be prepared by heating sodium nitrate with sulfuric acid: NaNO 3 + H 2 SO 4 --> HNO

Ideal gas is kept inside a container allowed to expand , If an ideal gas is...

If an ideal gas is kept inside a container with movable piston, and is allowed to expand ISOTHERMALLY, then pressure exerted by the gas on the container wall decreses. Why? What h

Properties of styrene - hydrocarbon, Properties of Styrene Styrene is a...

Properties of Styrene Styrene is a colourless liquid, boiling point 145°C. On keeping, it slowly changes into a solid polymer known as meta styrene. The polymerisation is fast

Method for detection of elements - oxygen, Method for Detection of Elements...

Method for Detection of Elements - Oxygen There is no any type of satisfactory qualitative method for the detection of oxygen. Though, its presence can be inferred indirectly.

Hiroshima, what reactions take place

what reactions take place

Which of the following set of quantum number is not valid, Which of the fol...

Which of the following set of quantum number is not valid: (1) n=1, l=2                         (2) 3=2, m=1       (3)  m=3,l=0                       (4)  3=4,l=2

Electrochemistry, Explain about Debye huckel onsager equation of conductivi...

Explain about Debye huckel onsager equation of conductivity and its validity?

Pariodik table.., writethe sort farmula of learn the pariodik table.

writethe sort farmula of learn the pariodik table.

Metallurgy, what are the various steps involved in metal extraction?

what are the various steps involved in metal extraction?

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