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Effects of neutral-beam excited states on charge-exchange emission cross sections
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View: Figures


Image of FIG. 1.
FIG. 1.

Radiance spectrum for a vertical chord passing through at the plasma midplane. The upper spectrum was taken during a neutral beam pulse with the beam energy of . The lower spectrum was taken after the beam was turned off. Note that both of the lines are enhanced by active charge exchange.

Image of FIG. 2.
FIG. 2.

Effective emission rate for 4944.67 . The main energy component of the beam dominates for energies in the range, but there are significant contributions from the other beam energy components.

Image of FIG. 3.
FIG. 3.

The contributions to the total emission rates of and transitions for one location in the plasma are shown. Contributions from each of the beam components and from each of the excited states are identified.

Image of FIG. 4.
FIG. 4.

Apparent error in density measurement. First model assumes that the neutrals are entirely in the ground state . The second model adds first excited state . The third model includes ground state and the first two excited states .

Image of FIG. 5.
FIG. 5.

Measured density profiles for . Each of the points represents the experiment with the similar plasma conditions, but the measurement is made with the different beam energies. Fitted line is intended to guide the eyes.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of neutral-beam excited states on charge-exchange emission cross sections