Note: Refined possibilities for plasma probe diagnostics
| Autor: | V. K. Abgaryan, V. A. Riaby, P. E. Masherov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics 02 engineering and technology Plasma 021001 nanoscience & nanotechnology 01 natural sciences Ion Electric discharge in gases symbols.namesake Physics::Plasma Physics Physics::Space Physics 0103 physical sciences symbols Langmuir probe Plasma diagnostics Atomic physics 0210 nano-technology Instrumentation |
| Zdroj: | Review of Scientific Instruments. 87:086106 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.4960396 |
| Popis: | In an earlier publication, the ion mass determination technique was proposed using the Langmuir probe measurement results for low-pressure Maxwellian plasmas and their analysis, based on the Bohm effect and the Child-Boguslavsky-Langmuir (CBL) probe sheath model, allowing for probe sheath thickness and ion mass evaluations after the Bohm coefficient CBCyl ≈ 1.13 for cylindrical probes had been determined. In the present study, the step-front sheath model, being physically closer to the reality of gas discharge plasmas, was considered in order to correct the CBL sheath model results. At this stage, more real Bohm coefficient (CBCyl ≈ 1.23) for cylindrical probes was found to provide a more reliable method of probe sheath thickness and ion mass determination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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