منابع مشابه
Dark Space ahead of a Shock in Ionized Gas Flows
The dark space, which is formed ahead of a detached shock of a blunt body in a flow of ionized argon, was theoretically investigated, and its mechanism was revealed. The electron energy equation, electron continuity equation and continuity equation of the first excited-level atoms were formulized separatly in a shock layer and in a free stream, and then the free-stream solutions were connected ...
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In this article, we have calculated some thermodynamic properties for a system consisting of singy ionized 3He atoms and their corresponding removed electrons by employing the second quantization method at finite temperature. To perform the calculations, we have considered the kinetic term, and Coulomb interaction between the particles in our Hamiltonian. The calculated properties are free ener...
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The central stars of planetary nebulae (PNe) are natural targets for FUSE due to their UV brightness. The FUSE spectra of many PNe show absorption features due to circumstellar material in species ranging from H 2 and neutrals in the photodissociation region (PDR) to ions resident in the H II region. We report results from a program designed to search for nebular components in the H 2 Lyman and...
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H2 formation in metal-free gas occurs via the intermediate H − or H+2 ions. Destruction of these ions by photodissociation therefore serves to suppress H2 formation. In this paper, I highlight the fact that several processes that occur in ionized primordial gas produce photons energetic enough to photodissociate H− or H+2 and outline how to compute the photodissociation rates produced by a part...
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As part of a large study to map the distribution of star formation across galactic disks, we have obtained deep Hα images of the nearby Sculptor Group spirals NGC 247 and NGC 7793. These images are of sufficiently high quality that they allow identification and analysis of diffuse Hα emission at surface brightness levels ranging from those of extremely low density HII regions to those of the lo...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 1962
ISSN: 0031-9171
DOI: 10.1063/1.1706684