Charge state distribution and emission characteristics in a table top reflex discharge - Effect of ion confinement and electrons accelerated across the sheath

Kumar, Deepak; Englesbe, Alexander; Parman, Matthew; Stutman, Dan; Finkenthal, Michael

doi:10.1063/1.4935117

Title: Charge state distribution and emission characteristics in a table top reflex discharge - Effect of ion confinement and electrons accelerated across the sheath

Journal Article · Thu Nov 05 00:00:00 EST 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4935117· OSTI ID:1225175

^[1];

^[1]; Parman, Matthew ^[1]; Stutman, Dan ^[1]; Finkenthal, Michael ^[1]

The Johns Hopkins Univ., Baltimore, MD (United States)

Tabletop reflex discharges in a Penning geometry have many applications including ion sources and eXtreme Ultra-Violet (XUV) sources. The presence of primary electrons accelerated across the cathode sheaths is responsible for the distribution of ion charge states and of the unusually high XUV brightness of these plasmas. Absolutely calibrated space resolved XUV spectra from a table top reflex discharge operating with Al cathodes and Ne gas are presented. The spectra are analyzed with a new and complete model for ion charge distribution in similar reflex discharges. The plasma in the discharge was found to have a density of ~10¹⁸m^–3 with a significant fraction >0.01 of fast primary electrons. As a result, the implications of the new model on the ion states achievable in a tabletop reflex plasma discharge are also discussed.

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Research Organization:: Johns Hopkins Univ., Baltimore, MD (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-86ER53214; FGO2-86ER53214; S0000787

OSTI ID:: 1225175

Alternate ID(s):: OSTI ID: 1225249

Journal Information:: Physics of Plasmas, Vol. 22, Issue 11; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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Parameters influencing plasma column potential in a reflex discharge Liziakin, G. D.; Gavrikov, A. V.; Murzaev, Y. A. Physics of Plasmas, Vol. 23, Issue 12 https://doi.org/10.1063/1.4969084	journal	December 2016

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