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Measurement of ion density in a plasma torch using a plane probe

Measurement of ion density in a plasma torch using a plane probe

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The plasma density of the flame of a plasma torch has been determined from the current to a plane probe using two theories. One includes only the ion flow motion; the other includes only the ion thermal motion. Comparison with spectroscopic results suggests that both motions should be included.

References

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      • R.M. Clements , P.R. Smy . Electrostatic-probe studies in a flame plasma. J. Appl. Phys. , 4553 - 4558
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      • R.M. Clements , P.R. Smy . Ion current from a collision-dominated flowing plasma to a cylindrical electrode surrounded by a thin sheath. J. Appl. Phys. , 3745 - 3749
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      • R.M. Clements , P.R. Smy . Ion current to a spherical probe in a flowing high-pressure plasma under thin-sheath conditions. Proc. IEE , 1721 - 1724
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      • R. Holmes , I.L. Freeston . Comparison of probe and spectroscopic measurements in an argon plasma jet. J. Phys D.
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      • I.L. Freeston , J.E. Kelk . Ion current to a plane probe in a flowing plasma.
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      • R.E. Jahn . Temperature distribution and thermal efficiency of low power arc-heated plasma jets. Brit. J. Appl. Phys. , 585 - 588
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      • S.C. Brown . (1959) , Basic data of plasma physics.
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