Mercury hollow cathode plasma bridge neutralizers.

King, H. J.; Ward, J. W.

doi:10.2514/3.29442

Cited by 22 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The neutralization process can be analyzed in figure 10. When the ions are accelerated to high speed in one direction, a conical plume boundary will form and its shape will shift with the variation of the beam parameters [3,19,20]; a plasma bridge [21,22] will also be developed to connect the neutralizer plasma and the ion beam. To build such a plasma bridge, enough ions should be produced along the bridge [22].…”

Section: Analysis Of the Ecr Ion Thruster Neutralizationmentioning

confidence: 99%

“…When the ions are accelerated to high speed in one direction, a conical plume boundary will form and its shape will shift with the variation of the beam parameters [3,19,20]; a plasma bridge [21,22] will also be developed to connect the neutralizer plasma and the ion beam. To build such a plasma bridge, enough ions should be produced along the bridge [22]. The electrons accelerated by the electric field between the neutralizer and the beam will ionize the neutral atoms from the neutralizer to produce ions.…”

Section: Analysis Of the Ecr Ion Thruster Neutralizationmentioning

confidence: 99%

“…where n i/e is the ion/electron density; e is the fundamental charge; ε 0 is the permittivity of the vacuum; j is the potential of the beam plasma; I b is the ion beam current; v is the ion velocity; A is the beam plasma cross-section area; T e is the electron temperature in electron volts, usually between 1 eV and 10 eV in this case [22]; and n ∞ is the electron density at infinite distance. The ion velocity can be calculated from equation (4).…”

Section: One-dimensional Neutralization Modelmentioning

confidence: 99%

See 2 more Smart Citations

Experiment and analysis of the neutralization of the electron cyclotron resonance ion thruster

Jin

Yang

Sun

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

An electron cyclotron resonance ion thruster must emit an electron current equivalent to its ion beam current to prevent the thruster system from being electrically charged. This operation is defined as neutralization. The factors which influence neutralization are categorized into the ion beam current parameters, the neutralizer input parameters, and the neutralizer position. To understand the mechanism of neutralization, an experiment and a calculation study on how these factors influence thruster neutralization are presented. The experiment results show that the minimum bias voltage of the neutralizer was −60 V at the ion beam current of 80 mA for the argon propellant, and a critical gas flow rate existed, below which the coupling voltage increased sharply. Based on the experiment, the neutralization was analyzed by means of a onedimensional calculation model. The computation results show that the coupling voltage was influenced by the beam divergence and the negative potential zone near the grids.

show abstract

Section: Analysis Of the Ecr Ion Thruster Neutralizationmentioning

confidence: 99%

Section: Analysis Of the Ecr Ion Thruster Neutralizationmentioning

confidence: 99%

Section: One-dimensional Neutralization Modelmentioning

confidence: 99%

See 1 more Smart Citation

Experiment and analysis of the neutralization of the electron cyclotron resonance ion thruster

Jin

Yang

Sun

et al. 2017

Plasma Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Plasma bridge design has not generally concentrated on optimization as an ion source but it appears that even the standard design used for ATS-6 or SERT 2 is adequate. 20,21,22 In the ATS-6 data set, it appears that 1 mA is adequate to control the spacecraft potential. The bias of the plasma source will determine the potential of the spacecraft within certain limits.…”

Section: Discussionmentioning

confidence: 99%

Experiments in charge control at geosynchronous orbit - ATS-5 and ATS-6

Olsen

1985

Journal of Spacecraft and Rockets

View full text Add to dashboard Cite

“…Any mechanical connection between PCPG and the electrode can be completely avoided, if the electric contact is created by a gaseous discharge. Since the purpose of such a discharge is not the plasma process itself, but creating the galvanic connection between the main plasma and the electrode, the term plasma bridge established for low pressure plasmas [183,184] will be used.…”

Section: Pdd Plasma Bridgementioning

confidence: 99%

Piezoelectric Direct Discharge: Devices and Applications

Korzec¹,

Hoppenthaler²,

Nettesheim³

2020

Plasma

View full text Add to dashboard Cite

The piezoelectric direct discharge (PDD) is a comparatively new type of atmospheric pressure gaseous discharge for production of cold plasma. The generation of such discharge is possible using the piezoelectric cold plasma generator (PCPG) which comprises the resonant piezoelectric transformer (RPT) with voltage transformation ratio of more than 1000, allowing for reaching the output voltage >10 kV at low input voltage, typically below 25 V. As ionization gas for the PDD, either air or various gas mixtures are used. Despite some similarities with corona discharge and dielectric barrier discharge, the ignition of micro-discharges directly at the ceramic surface makes PDD unique in its physics and application potential. The PDD is used directly, in open discharge structures, mainly for treatment of electrically nonconducting surfaces. It is also applied as a plasma bridge to bias different excitation electrodes, applicable for a broad range of substrate materials. In this review, the most important architectures of the PDD based discharges are presented. The operation principle, the main operational characteristics and the example applications, exploiting the specific properties of the discharge configurations, are discussed. Due to the moderate power achievable by PCPG, of typically less than 10 W, the focus of this review is on applications involving thermally sensitive materials, including food, organic tissues, and liquids.

show abstract

Mercury hollow cathode plasma bridge neutralizers.

Cited by 22 publications

References 5 publications

Experiment and analysis of the neutralization of the electron cyclotron resonance ion thruster

Experiment and analysis of the neutralization of the electron cyclotron resonance ion thruster

Experiments in charge control at geosynchronous orbit - ATS-5 and ATS-6

Piezoelectric Direct Discharge: Devices and Applications

Contact Info

Product

Resources

About