Comparative measurements of plasma potential with ball-pen and Langmuir probe in low-temperature magnetized plasma
| Parent link: | Physics of Plasmas.— , 1989- Vol. 22, iss. 3.— 2015.— [033516, 8 р.] |
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| Autor corporatiu: | |
| Altres autors: | , , , , |
| Sumari: | Title screen The ball-pen probe (BPP) is used for direct plasma potential measurements in magnetized plasma. The probe can adjust the ratio of the electron and ion saturation currents Isat − /Isat + to be close to one and therefore its I-V characteristic becomes nearly symmetric. If this is achieved, the floating potential of the BPP is close to the plasma potential. Because of its rather simple construction, it offers an attractive probe for measurements in magnetized plasma. Comparative measurements of plasma potential by BPPs of different dimensions as well as one Langmuir probe (LP) in an argon discharge plasma of a cylindrical magnetron were performed at various experimental conditions. An additional comparison by an emissive probe was also performed. All these types of probes provide similar values of plasma potential in a wide range of plasmaparameters. Our results for three different BPP dimensions indicate that the BPP can be operated in a cylindrical magnetron DC argon discharge if the value of the ratio of the magnetic field and neutral gas pressure, B/p, is greater than approximately 10 mT/Pa. Режим доступа: по договору с организацией-держателем ресурса |
| Publicat: |
2015
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| Matèries: | |
| Accés en línia: | http://dx.doi.org/10.1063/1.4916572 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=644920 |
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