Comparisons of infrared extinction by aerosol particles of brass 70Cu/30Zn calculated by the VIEF and the FDTD methods

Author

Chen, Hsing-Yi ; Fang, Chin-Chyang ; Wang, Hou-Hwa

Author_Institution

Dept. of Electr. Eng., Yuan-Ze Inst. of Technol., Taoyuan Shian, Taiwan

fYear

1993

fDate

18-21 Aug 1993

Firstpage

683

Abstract

In the paper, the VIEF and the FDTD methods were used to calculate the specific extinction cross section (SECS) of aerosols of brass 70Cu/30Zn with 14 to 365 particles in the infrared. Models of body-center-like were used for calculations of specific extinction cross section. From theoretical calculations, the values of specific extinction cross section of aerosol particles of brass 70Cu/30Zn obtained by the VIEF and the FDTD methods were 0.02 to 0.3 and 0.04 to 2.8 m²/g, respectively. While from experimental measurements, the value of the specific extinction cross section is 0.6 to 3.78 m²/g. The theoretical results obtained by the FDTD method are in better agreement with those obtained from experimental measurements

Keywords

aerosols; atmospheric optics; brass; finite difference time-domain analysis; remote sensing; Cu; FDTD method; VIEF method; Zn; aerosol particles; body-center-like model; brass 70Cu/30Zn; infrared extinction; specific extinction cross section; Aerosols; Dielectric losses; Electromagnetic scattering; Extraterrestrial measurements; Finite difference methods; Frequency; Integral equations; Particle scattering; Radar scattering; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322242

Filename

322242