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Quasisteady state interpulse plasmas
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10.1063/1.2743825
/content/aip/journal/jap/101/11/10.1063/1.2743825
http://aip.metastore.ingenta.com/content/aip/journal/jap/101/11/10.1063/1.2743825
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the experimental apparatus; OSC, magnetron oscillator; ISO, isolator; SC, straight section; ATT, attenuator; DC, directional coupler; H, rectangular bend; EHT, E-H tuner; W, quartz window; C, chamber; MC, multicusp; OF, optical fiber; WG, waveguide; P, Langmuir probe; PMT, photomultiplier tube; , probe voltage; PC, computer; DOS, digital oscilloscope; R, resistor, XY, X-Y chart recorder; TRIG, trigger signal; BX, boxcar integrator.

Image of FIG. 2.
FIG. 2.

(a) Radial variation of the static field of the magnetic multicusp in the normalized scale. (b) Two dimensional Poisson field plot. (c) Longitudinal magnetic arrangement, demonstrating axial end plugging.

Image of FIG. 3.
FIG. 3.

Temporal variation of the electron current density with pressure as a parameter.

Image of FIG. 4.
FIG. 4.

Temporal variation of the electron current density , showing the development of a plasma steady state (density flattop) in the interpulse regime.

Image of FIG. 5.
FIG. 5.

Variation of the peak electron current density with pressure and pulse repetition frequency as a parameter.

Image of FIG. 6.
FIG. 6.

Variation of the electron confinement time with pressure and pulse repetition frequency as a parameter.

Image of FIG. 7.
FIG. 7.

Variation of the optical intensity with time at a fixed microwave power for .

Image of FIG. 8.
FIG. 8.

Temporal variation of electron energy for different tube radii at a pressure of , power of , and input frequency of .

Image of FIG. 9.
FIG. 9.

Temporal variation of the plasma (electron) current density for different gas pressures at a peak power of , radius of , and frequency of .

Image of FIG. 10.
FIG. 10.

Temporal variation of the plasma (electron) current density for different tube radii at a pressure of , peak power of , and frequency of .

Image of FIG. 11.
FIG. 11.

Temporal variation of the plasma (electron) current density for different input frequencies at a pressure of , peak power of , and radius of .

Image of FIG. 12.
FIG. 12.

Temporal variation of plasma (electron) current density for different peak microwave powers at a pressure of , radius of , and input frequency of .

Image of FIG. 13.
FIG. 13.

Variation of the flattop duration with pressure. Dotted line and open squares, simulation; solid line and circles, experiment. The results are for a peak power of .

Image of FIG. 14.
FIG. 14.

Variation of the flattop duration with microwave powers at 10 and . E, experimental values; S, simulation results.

Image of FIG. 15.
FIG. 15.

Comparison of the plasma (electron) current density evolution in the presence and in the absence of field diffusion time for , peak power of , at a pressure of .

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/content/aip/journal/jap/101/11/10.1063/1.2743825
2007-06-13
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quasisteady state interpulse plasmas
http://aip.metastore.ingenta.com/content/aip/journal/jap/101/11/10.1063/1.2743825
10.1063/1.2743825
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