On the thermal behavious of small iron grains
Date
2004
Authors
Fischera, Joerg
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
The optical properties of small spherical iron grains are derived using a Kramers-Kronig-consistent model of the dielectric function including its dependence on temperature and size. Especially discussed is the effect of the size dependence, which results from the limitation of the free path of the free electrons in the metal by the size of the grain, on the absorption behaviour of small iron spheres and spheroids. The estimated absorption properties are applied to study the temperature behaviour of spherical and spheroidal grains which are heated by the interstellar radiation field.
Description
Keywords
Keywords: Catalysts; Composition; Dust; Functions; Grain size and shape; Light absorption; Free path; Interstellar medium (ISM): dust, extinction; Interstellar medium (ISM): general; Spheroids; Iron ISM: dust, extinction; ISM: general
Citation
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Source
Astronomy and Astrophysics
Type
Journal article