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Introduction to Gas Dynamics
| Content Provider | Scilit |
|---|---|
| Author | Dyson, J. E. Williams, D. A. |
| Copyright Year | 2020 |
| Description | The mean free paths of the thermal particles in interstellar gas are nearly always short compared with the linear sizes of the regions occupied. The state of the gas can be described in terms of macroscopic properties in addition to temperature, for example, pressure, density, and velocity, which are averages over the properties of many individual particles contained within regions of extent much greater than the mean free paths. This chapter discusses the properties of shock waves, and, in particular, investigates conservation of quantities across the shock – the so-called jump conditions. The temperature behind a shock wave depends on the shock velocity and the molecular weight of the gas, and this temperature largely determines the physical mechanisms by which the shocked gas radiates. The passage of a shock may affect the fractional ionization in the shocked region. In diffuse clouds, atomic carbon is photoionized by starlight and makes the major contribution to the ionization fraction. Book Name: The Physics of the Interstellar Medium |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2019-0-09945-7&isbn=9781003025030&doi=10.1201/9781003025030-6&format=pdf |
| Ending Page | 133 |
| Page Count | 31 |
| Starting Page | 103 |
| DOI | 10.1201/9781003025030-6 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2020-07-13 |
| Access Restriction | Open |
| Subject Keyword | Book Name: The Physics of the Interstellar Medium Fluids and Plasmas Physics Fractional Ionization |
| Content Type | Text |
| Resource Type | Chapter |
