Diagnostics of highly charged plasmas with multicomponent 1+ ion injection

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 n_{e}, average electron energy 〈E_{e}〉, and the characteristic times of ionization, charge exchange, and ion...

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Veröffentlicht in:Physical review. E 2022-11, Vol.106 (5-2), p.055208-055208, Article 055208
Hauptverfasser: Luntinen, M, Toivanen, V, Koivisto, H, Angot, J, Thuillier, T, Tarvainen, O, Castro, G
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Sprache:eng
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Zusammenfassung: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 n_{e}, average electron energy 〈E_{e}〉, and the characteristic times of ionization, charge exchange, and ion confinement of stochastically heated, highly charged plasma. Multicomponent injection allows refining the n_{e}, 〈E_{e}〉 ranges, reducing experimental uncertainty. Na/K injection is presented as a demonstration. The 〈E_{e}〉 and n_{e} of a hydrogen discharge are found to be 600_{-300}^{+600}eV and 8_{-3}^{+8}×10^{11}cm^{-3}, respectively. The ionization, charge exchange, and confinement times of high charge state alkali ions are on the order of 1 ms-10 ms.
ISSN:2470-0045
2470-0053
DOI:10.1103/PhysRevE.106.055208