Design study of compact EBIS for light-ion production using low-energy hollow electron beams

Katagiri, Ken; Kawamura, Kensei; Wakui, Takashi; Muramatsu, M.; Hayashizaki, Noriyosu

doi:10.1016/j.nima.2020.164837

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…Single-charged non-neutral, pure electron plasmas 1,2 are of interest both for basic fundamental 3 plasma physics 4 physics, including astrophysics 5 , atomic physics 6 , and for various practical applications 7 . Examples of such plasmas are present in the electron cloud in the Malmberg-Penning trap 8,9 , the squeezed state of electrons 10,11 , and electron beams.…”

Section: Introductionmentioning

confidence: 99%

Observation of the diocotron instability in a diode with split cathode

Bliokh¹,

Krasik²,

Leopold³

et al. 2022

Preprint

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Section: Introductionmentioning

confidence: 99%

Observation of the diocotron instability in a diode with split cathode

Bliokh¹,

Krasik²,

Leopold³

et al. 2022

Preprint

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“…Several publications discussing similar instruments, either for studying non-neutral plsamas [26][27][28][29][30] or as ion sources themselves [31,32], note that the electrons are susceptible to various instabilities that lead to non-uniformities forming. Thus, solenoidal ionisers can be considered in terms of nonneutral plasmas [33], with a performance that is dominated by the non-ideal behaviour that occurs with increasing electron density.…”

mentioning

confidence: 99%

Nonuniform electron distributions in a solenoidal ioniser

Bergin

Martens

Dastoor

2023

J. Phys. D: Appl. Phys.

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Solenoidal ionisers are a new class of highly efficient helium detectors that are increasingly important for high resolution atom scattering, molecular scattering and scanning helium microscopy. They operate via electron ionisation, where the electrons are trapped by the magnetic field of a solenoid and additional electrostatic potentials. Their ionisation efficiency scales with the electron population they contain, motivating large devices with high emission currents. However, these detectors typically become unstable at high electron densities, constraining their performance improvement. Through imaging the electronpopulation at the exit of the ioniser, we demonstrate that these instabilities arise from nonuniformities in the electron distribution. Considering the ioniser as a non-neutral plasma leads to the proposal of the formation of a virtual cathode and a plasma instability as the origins of the non-uniformity.

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Observation of the diocotron instability in a diode with split cathode

et al. 2022

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Diocotron instability has been observed in the pure electron plasma formed in a split cathode coaxial diode. This plasma consists of electrons, trapped in the longitudinal potential well between the two parts of the cathode. The mathematical model of the electron squeezed state, which allows the calculation of the equilibrium plasma density, is presented. The model is applied in a comprehensive analysis of experimental data, and the presence of the diocotron instability is unambiguously confirmed.

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Design study of compact EBIS for light-ion production using low-energy hollow electron beams

Cited by 3 publications

References 26 publications

Observation of the diocotron instability in a diode with split cathode

Observation of the diocotron instability in a diode with split cathode

Nonuniform electron distributions in a solenoidal ioniser

Observation of the diocotron instability in a diode with split cathode

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