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Tracer-encapsulated solid pellet injection system
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Image of FIG. 1.
FIG. 1.

Schematic view of configuration of TESPEL.

Image of FIG. 2.
FIG. 2.

Schematic view of the whole TESPEL diagnostic system.

Image of FIG. 3.
FIG. 3.

TESPEL production procedure: (a) status of the initial polystyrene ball, (b) status of the drilled polystyrene ball, (c) status of the titanium tracer balls inside the drilled polystyrene ball, and (d) status of the completed TESPEL with the closed hole.

Image of FIG. 4.
FIG. 4.

TESPEL storage disk.

Image of FIG. 5.
FIG. 5.

TESPEL injection system with function of differential pumping.

Image of FIG. 6.
FIG. 6.

Flow chart of TESPEL injection system.

Image of FIG. 7.
FIG. 7.

The vacuum ultraviolet spectroscopic data before (t = 3.65 s) and after (t = 3.85 s) injection of a TESPEL with triple tracers: V, Mn, and Co. The intensity I (arbitrary unit) versus the wavelength (nm). The time resolution is 50 ms. The base of the spectra before TESPEL injection is shifted downward to avoid overlapping. The TESPEL is injected at t = 3.69 s. Li-like line emissions and also the other lines from these three tracers are clearly observed after TESPEL injection, while these are negligible before TESPEL injection. As Fe is an intrinsic impurity, the Fe line (Fe XXIV) intensity is unchanged before and after TESPEL injection.


Generic image for table
Table I.

Guide tube dimensions.

Generic image for table
Table II.

Tracer atoms used so far in the experiment.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tracer-encapsulated solid pellet injection system