Composition of the beam of an SPT-100 stationary plasma thruster

Barkalov, E. E.; Veselovzorov, A. N.; Pogorelov, A. A.; Svirskii, E. B.; Смирнов, В. А.

doi:10.1134/s002044120802019x

Cited by 4 publications

(2 citation statements)

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“…The same effect was also observed in mathematical modeling for SPT plasma: the mode of pulsations of the discharge current (voltage) also showed a broadening of the ion distribution function toward low as well as high energies, with a shift of the maximum of the distribution function toward high energies [22,46]. It was thought that the generation of energetic ions was due to multiply ionized ions which again became singly charged in the process of charge exchange in the SPT plume [27]. It was only observed experimentally [26] 'in the mode of a large current' that the maximum of the distribution function begins to shift beyond eV d .…”

Section: Discussionmentioning

confidence: 61%

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Anomalous acceleration of ions in a plasma accelerator with an anodic layer

Bardakov

Ivanov

Kazantsev

et al. 2018

Plasma Sci. Technol.

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In a plasma accelerator with an anodic layer (PAAL), we discovered experimentally the effect of 'super-acceleration' of the bulk of the ions to energies W exceeding the energy equivalent to the discharge voltage V d. The E×B discharge was ignited in an environment of atomic argon and helium and molecular nitrogen. Singly charged argon ions were accelerated most effectively in the case of the largest discharge currents and pressure P of the working gas. Helium ions with W>eV d (e being the electron charge) were only recorded at maximum pressures. Molecular nitrogen was not accelerated to energies W>eV d. Anomalous acceleration is realized in the range of radial magnetic fields on the anode 2.8×10-2 B rA 4×10-2 T. It was also found analytically that the cathode of the accelerator can receive anomalously accelerated ions. In this case, the value of the potential in the anodic layer becomes higher than the anode potential, and the anode current exceeds some critical value. Numerical modeling in terms of the developed theory showed qualitative agreement between modeling data and measurements.

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Section: Discussionmentioning

confidence: 61%

“…As an example of the RPA-based measurement of the energy distribution function of xenon ions, we refer the reader to [27,28] where ions were recorded with energies larger than eV d in the tail of the distribution function.…”

Section: Introductionmentioning

confidence: 99%