Diagnostics of highly charged plasmas with multicomponent 1+ ion injection
Luntinen, M., Toivanen, V., Koivisto, H., Angot, J., Thuillier, T., Tarvainen, O., & Castro, G. (2022). Diagnostics of highly charged plasmas with multicomponent 1+ ion injection. Physical Review E, 106(5), Article 055208. https://doi.org/10.1103/PhysRevE.106.055208
Published inPhysical Review E
©2022 American Physical Society
We establish multicomponent 1+ injection into a charge breeder electron cyclotron resonance ion source and an associated computational procedure as a noninvasive probe of the electron density ne, average electron energy ⟨Ee⟩, and the characteristic times of ionization, charge exchange, and ion confinement of stochastically heated, highly charged plasma. Multicomponent injection allows refining the ne, ⟨Ee⟩ ranges, reducing experimental uncertainty. Na/K injection is presented as a demonstration. The ⟨Ee⟩ and ne of a hydrogen discharge are found to be 600+600−300eV and 8+8−3×1011cm−3, respectively. The ionization, charge exchange, and confinement times of high charge state alkali ions are on the order of 1 ms–10 ms.
PublisherAmerican Physical Society (APS)
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Academy Project, AoF
Additional information about fundingWe acknowledge grants of computer capacity from the Finnish Grid and Cloud Infrastructure  and support of the Academy of Finland Project funding (Grant No. 315855).
Showing items with similar title or keywords.
Komppula, Jani (University of Jyväskylä, 2015)
Sakieldien, Moenir (University of Jyväskylä, 2018)This thesis presents the results of an investigation of the volumetric Kα emission rate/inner shell ionization rate from an Electron Cyclotron Resonance Ion Source (ECRIS) plasma tuned predominantly for high charge state ...
Time resolved measurements of hydrogen ion energy distributions in a pulsed 2.45 GHz microwave plasma Megía-Macías, A.; Cortázar, O. D.; Tarvainen, Olli; Koivisto, Hannu (AIP Publishing LLC, 2017)A plasma diagnostic study of the Ion Energy Distribution Functions (IEDFs) of H+, H+2H2+, and H+3H3+ ions in a 2.45 GHz hydrogen plasma reactor called TIPS is presented. The measurements are conducted by using a Plasma Ion ...
Plasma diagnostic tools for ECR ion sources : What can we learn from these experiments for the next generation sources Tarvainen, O.; Kalvas, T.; Koivisto, H.; Kronholm, R.; Marttinen, M.; Sakildien, M.; Toivanen, V.; Izotov, I.; Skalyga, V.; Angot, J. (American Institute of Physics, 2019)The order-of-magnitude performance leaps of ECR ion sources over the past decades result from improvements to the magnetic plasma confinement, increases in the microwave heating frequency, and techniques to stabilize the ...
Measurement of ionization, charge exchange and ion confinement times in charge breeder ECR ion sources with short pulse 1+ injection of metal ions Luntinen, Miha; Angot, Julien; Tarvainen, Olli; Toivanen, Ville; Thuillier, Thomas; Koivisto, Hannu (IOP Publishing, 2022)The Consecutive Transients (CT) method is used for estimating the characteristic times of ionization, charge exchange and confinement within the plasma of a Charge Breeder Electron Cyclotron Resonance Ion Source (CB-ECRIS). ...