A dust particle immersed in a glow-discharge plasma has long been known to have a charge that is
A method is demonstrated for controlling the charge of a dust particle in a plasma afterglow, allowing a wider range of outcomes than an earlier method. As in the earlier method, the dust particles are located near an electrode that has a DC voltage during the afterglow. Here, that DC voltage is switched to a positive value at a specified delay time, instead of maintaining a constant negative voltage as in the earlier method. Adjusting the timing of this switching allows one to control the residual charge gradually over a wide range that includes both negative and positive values of charge. For comparison, only positive residual charges were attained in the earlier method. We were able to adjust the residual charge from about −2000
- Award ID(s):
- 1740379
- NSF-PAR ID:
- 10422196
- Publisher / Repository:
- IOP Publishing
- Date Published:
- Journal Name:
- Journal of Physics D: Applied Physics
- Volume:
- 56
- Issue:
- 37
- ISSN:
- 0022-3727
- Page Range / eLocation ID:
- Article No. 375202
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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