banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Periodically oscillating plasma spherea)
a)Paper NI2 5, Bull. Am. Phys. Soc. 49, 250 (2004).
Rent this article for


Image of FIG. 1.
FIG. 1.

Schematic of the INS-e device.

Image of FIG. 2.
FIG. 2.

Radial profiles of the plasma potential at various fill pressures. The bias voltages for the extractor grids, the outer grid, and the inner grid are all . (Reproduced from Ref. 12.)

Image of FIG. 3.
FIG. 3.

(a) Temporal evolution of plasma potential at the center of the virtual cathode with and without rf modulation. (Reproduced from Ref. 19.) (b) Delay in the virtual cathode destruction due to rf modulation as a function of modulation frequency. (Reproduced from Ref. 19.)

Image of FIG. 4.
FIG. 4.

Comparison between the experimentally measured resonance frequencies due to POPS oscillation (points) and the theoretical calculations (lines) as a function of potential well depth in the virtual cathode and ion mass. (Reproduced from Ref. 19.)

Image of FIG. 5.
FIG. 5.

Delay in the loss of the virtual cathode as a function of rf modulation amplitude at the POPS frequency ( for ions). The inner grid bias of (pulse), the outer grid bias of (dc), and the extractor grid bias of (pulse) are used to create the potential well depth of .

Image of FIG. 6.
FIG. 6.

Ion density profiles: (a) before compression, (b) after compression. Electron density profiles: (c) before compression, (d) after compression. Electrostatic potential profiles: (e) before compression, (f) after compression.

Image of FIG. 7.
FIG. 7.

POPS dynamics for focused electron injection: (a) electron density at maximum compression and (b) ion density at maximum compression.


Generic image for table
Table I.

Potential applications for POPS fusion devices and required radial compression based on modular design.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Periodically oscillating plasma spherea)