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Phase mixing and echoes in a pure electron plasmaa)
a)Paper CI1B 2, Bull. Am. Phys. Soc. 49, 57 (2004).
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10.1063/1.1885006
/content/aip/journal/pop/12/5/10.1063/1.1885006
http://aip.metastore.ingenta.com/content/aip/journal/pop/12/5/10.1063/1.1885006
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Simple representation of phase mixing and unmixing, using (a) and (d) , resulting in (f) .

Image of FIG. 2.
FIG. 2.

Electron trap with CCD camera density diagnostic. The wall signal from sectored electrodes is used to measure the wave amplitudes.

Image of FIG. 3.
FIG. 3.

(Color). CCD image of surface drift wave. Typical density and rotation frequency profiles are also shown.

Image of FIG. 4.
FIG. 4.

Measured wall signal showing initial, second, and echo waves.

Image of FIG. 5.
FIG. 5.

(Color). Experimental density perturbation images at six successive times. The initial wave is excited in (a) and the density perturbation executes spiral wind-up as the wave is spatially Landau damped. (d) shows the second wave excitation and the echo peaks in (f).

Image of FIG. 6.
FIG. 6.

Echo appearance time vs the second wave launch time , both normalized to the wave period , using various mode numbers.

Image of FIG. 7.
FIG. 7.

Measured peak echo wall signal vs the second wave launch time for two different second excitation voltages . The solid lines show fits from numerically integrating the collisional theory expression of Eq. (33). The dashed and dot-dashed lines have .

Image of FIG. 8.
FIG. 8.

Echo data showing the measured vs actual electron-electron collision rate . The size of the data symbols represents the strength of the second wave perturbation.

Image of FIG. 9.
FIG. 9.

The peak initial wave and echo wave wall signals, and , respectively, vs the initial wave excitation voltage . The solid line is the theory prediction .

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/content/aip/journal/pop/12/5/10.1063/1.1885006
2005-04-28
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phase mixing and echoes in a pure electron plasmaa)
http://aip.metastore.ingenta.com/content/aip/journal/pop/12/5/10.1063/1.1885006
10.1063/1.1885006
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