Publication Details:

Established in 2008

Journal or Publication Title:

Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես

Date of publication:

2021

Volume:

14

Number:

4

ISSN:

1829-1171

Official URL:

Corporate Creators:

National Polytechnic University of Armenia

Coverage:

201-212

Abstract:

The problem of description of a wave field generating by a system of coherent point sources is considered. This problem is discussed for two well-known approximations, the Fresnel and Fraunhofer patterns, correspondingly. It is shown, that for validity of the both approximations the problem has to contain two dimensionless small parameters. First of them is the wave parameter of the sources area and the second one is the wave parameter corresponding to the observation area. In the framework of the Fraunhofer pattern the Laue conditions of diffraction maximums for a system of periodic arranged sources is derived.

Format:

pdf

Identifier:

click here to follow the link ; oai:arar.sci.am:297494

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան