A4 Artikkeli konferenssijulkaisussa
Empirical study of multidimensional Child-Langmuir law with plasma ion source extraction using round apertures (2022)
Kosonen, S. T., Kalvas, T., Tarvainen, O., & Toivanen, V. (2022). Empirical study of multidimensional Child-Langmuir law with plasma ion source extraction using round apertures. In ICIS2021 : 19th International Conference on Ion Sources (Article 012079). IOP Publishing. Journal of Physics : Conference Series, 2244. https://doi.org/10.1088/1742-6596/2244/1/012079
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Kosonen, S. T.; Kalvas, T.; Tarvainen, O.; Toivanen, V.
Emojulkaisu: ICIS2021 : 19th International Conference on Ion Sources
Konferenssi:
- International Conference on Ion Sources
Konferenssin paikka ja aika: Online, 20.-24.9.2021
Lehti tai sarja: Journal of Physics : Conference Series
ISSN: 1742-6588
eISSN: 1742-6596
Julkaisuvuosi: 2022
Ilmestymispäivä: 01.04.2022
Sarjan numero: 2244
Artikkelinumero: 012079
Kustantaja: IOP Publishing
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1088/1742-6596/2244/1/012079
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/82325
Tiivistelmä
One dimensional Child-Langmuir (CL) law is commonly used in ion source physics to describe space charge limited ion extraction from the plasma. Recently 2D and 3D CL laws have been derived, but plasma ion extraction does not strictly meet the assumptions in these CL laws. Investigations on the applicability of the CL laws to ion source extraction were conducted using filament-driven ion source, measuring the beam currents as a function of extraction voltage. The experiments are complemented with simulations where IBSimu is used for studying the behaviour of plasma meniscus. Three different voltage regions were identified with low, moderate and high voltage. With moderate voltages the extracted beam current density shows signs of 3D CL law. The results indicate that for the total beam current CL laws are not valid but instead require collimation for the CL effects emerge.
YSO-asiasanat: plasmafysiikka; hiukkaskiihdyttimet
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2022
JUFO-taso: 1
