Spectroscopic interferometer for coherence length spectroscopy of pulsed discharge plasma
| Autor: | Nopporn Poolyarat, Yong W. Kim |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Argon
Materials science genetic structures Physics::Instrumentation and Detectors chemistry.chemical_element Plasma Saha ionization equation eye diseases Coherence length Interferometry chemistry Physics::Plasma Physics Physics::Space Physics Physics::Atomic and Molecular Clusters Electron temperature Plasma diagnostics Atomic physics Spectroscopy Instrumentation |
| Zdroj: | The Review of scientific instruments. 79(10) |
| ISSN: | 1089-7623 |
| Popis: | We have designed and constructed a spectroscopic interferometer, and test run its operation with a pulsed discharge plasma. The plasma is produced by capacitor discharge across a gap filled with neutral argon at selected pressures. Ablation of iron from the cathode adds to argon to form equilibrium plasma of an argon-iron mixture. The ablative mass addition is measured and incorporated into the system of Saha equations. The calculated plasma energy is compared to independently measured total energy injected into the plasma to determine the peak plasma temperature. The measured coherence length of an argon emission line shows a dependence on the direction of the line of sight and a scaling with collision time within the plasma. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|