Characteristics of normal ionizing shock waves in helium
| Autor: | L. Bighel, C.N. Watson-Munro |
|---|---|
| Rok vydání: | 1972 |
| Předmět: |
Shock wave
Physics Nuclear and High Energy Physics Astrophysics::High Energy Astrophysical Phenomena chemistry.chemical_element Plasma Saha ionization equation Condensed Matter Physics Shock (mechanics) Magnetic field chemistry Electric field Atomic physics Shock tube Astrophysics::Galaxy Astrophysics Helium |
| Zdroj: | Nuclear Fusion. 12:193-197 |
| ISSN: | 1741-4326 0029-5515 |
| Popis: | A normal ionizing shock wave is one which propagates, with its shock front perpendicular to a steady magnetic field, into a neutral gas producing ionization. In the experiments described a cylindrical shock tube of length 170 cm and diameter 21.4 cm was used to study shock velocities and such post-shock parameters as electric fields, densities and temperatures in helium. Over a range of steady magnetic fields from 3 kG to 12 kG, discharge currents from 10 to 140 kA and gas pressures of 50, 100 and 200 mtorr, it was found that the shock velocities and electric fields behind the shock agree well with those theoretically predicted from the conservation equations and a modified form of the Chapman-Jouget hypothesis. In these calculations it was assumed that the Saha equation was applicable to the plasma. Spectroscopie measurements of the density and temperature shock profiles were also made, and are compared with those obtained from Thomson scattering. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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