A1 Journal article (refereed)
Estimating ion confinement times from beam current transients in conventional and charge breeder ECRIS (2020)

Marttinen, M., Angot, J., Annaluru, A., Jardin, P., Kalvas, T., Koivisto, H., Kosonen, S., Kronholm, R., Maunoury, L., Tarvainen, O., Toivanen, V., & Ujic, P. (2020). Estimating ion confinement times from beam current transients in conventional and charge breeder ECRIS. Review of Scientific Instruments, 91(1), Article 013304. https://doi.org/10.1063/1.5128546

JYU authors or editors

Publication details

All authors or editorsMarttinen, M.; Angot, J.; Annaluru, A.; Jardin, P.; Kalvas, T.; Koivisto, H.; Kosonen, S.; Kronholm, R.; Maunoury, L.; Tarvainen, O.; et al.

Journal or seriesReview of Scientific Instruments



Publication year2020


Issue number1

Article number013304

PublisherAmerican Institute of Physics

Publication countryUnited States

Publication languageEnglish


Publication open accessNot open

Publication channel open access

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/67461


Cumulative ion confinement times are probed by measuring decaying ion current transients in pulsed material injection mode. The method is applied in a charge breeder and conventional ECRIS yielding mutually corroborative results. The cumulative confinement time estimates vary from approximately 2 ms–60 ms with a clear dependence on the ion charge-to-mass ratio—higher charges having longer residence times. The long cumulative confinement times are proposed as a partial explanation to recently observed unexpectedly high ion temperatures. The results are relevant for rare ion beam (RIB) production as the confinement time and the lifetime of stable isotopes can be used for estimating the extracted RIB production efficiency.

Keywordsplasma technology

Free keywordsplasma sources; plasma diagnostics; ion sources; plasma discharges

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Ministry reportingYes

Reporting Year2020

JUFO rating1

Last updated on 2024-22-04 at 13:49