Учет микрофизических параметров неоднородной среды в ослаблении оптического излучения
| Parent link: | Известия вузов. Физика: научный журнал.— , 1957- Т. 57, № 10, ч. 2.— 2014.— [С. 122-127] |
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| Summary: | Заглавие с экрана Приведены результаты расчетов ослабления оптического излучения, полученные в рамках теории Ми. Показано влияние краевого эффекта на ослабление излучения сферическими частицами, соизмеримыми с длиной волны падающего излучения. Рассматриваются особенности спектрального хода коэффициента ослабления, обусловленные оптическими свойствами частиц и параметрами распределения частиц по размерам. The study of the extinction of electromagnetic radiation is given much attention in the solution of many astrophysical problems related to the flow of energy through polydisperse environment of different nature. Basic knowledge of interplanetary or interstellar dust is largely due to the estimation of scattering and extinction. In this paper, in the framework of Mie theory, we numerically studied the extinction of radiant energy at visible and IR wavelength ranges. The extinction is seen as the cumulative result of scattering and absorption by particles of the medium. Based on the analysis of the results of calculation of extinction it is determined a significant impact parameters of the distribution of particle size on the spectral course of extinction when considering the relationship between wavelength and optical properties of substance of particles. It is considered different average particle sizes and accounted for the weight differences of particles with different sizes in a unit volume. According to the results of numerical studies we can conclude that the distribution function of particle size should be taken into account as an important factor of influence on the optical characteristics at modeling of the attenuation of radiation polydisperse environment. Режим доступа: по договору с организацией-держателем ресурса |
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2014
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| Online Access: | http://elibrary.ru/item.asp?id=23573495 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644485 |