Emission of carbon clusters from sooting plasma

Issue		Eur. Phys. J. Appl. Phys. Volume 5, Number 2, February 1999


Page(s)		111 - 114
DOI		10.1051/epjap:1999117

DOI: 10.1051/epjap:1999117

Eur. Phys. J. AP 5, 111-114

Rapid Note

Emission of carbon clusters from sooting plasma

Shoaib Ahmad

Accelerator Laboratory, PINSTECH, P.O. Nilore, Islamabad, Pakistan
pinstech@paknet2.ptc.pk

Received: 2 October 1998 / Revised: 9 December 1998 / Accepted: 25 January 1999

Abstract
A hollow cathode source with a specially designed cusp magnetic field $B_z(r,\theta)$ provides clustering environment to the sputtered carbon atoms and ions. Source's distinctive features are its sooting properties that depend upon the two well-defined regions within the discharge. The cusp field drives both of these regions but in different modes - one region ionizes the source gas, introduces the sputtered C from the hollow cathode while the other is the collision dominated gyrational motion of the C⁺ ions along $B_z(r,\theta)$ contours. Tunability of plasma's discharge characteristics provides the tool to investigate clustering in the sooting plasma.

PACS
52.80.Sm Magnetoactive discharges (e.g., Penning discharges) - 36.40.Wa Charged clusters - 52.55.Lf Astron, cusp, and other magnetic traps

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