8—13.
THE GLOW DISCHARGE
173
-
Pofenal
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-
-
DISTANCE
ALONG
THE
TUBE AXIS
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.
lntensi’ry
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lntensy
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Charge
Densiÿ
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Density
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'T01‘ài
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Space
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.
Charge
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Current
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Density
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FIG'
o_fàglOw discharge_'
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