caa a22 4500 445867000 CHVBK 20180317145501.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1140/epjd/e2011-10464-2 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-10464-2 Nagata M. Nippon Electronic Engineering College, Satunai-cho, Noboribetsu-shi, Hokkaido, Japan aut Dependences of the drift velocity of electrons and the magnetoresistance effect on the ionization-degrees and the active radii of the Coulomb force of an ion sphere in an intermediately ionized plasma of a helium gas [Elektronische Daten] [M. Nagata] Two weakly ionized plasmas (the ionization-degree a′′=10-6 and 10-5) and an intermediately ionized plasma (a′′=10-4) are investigated. In previous work, the negative magnetoresistance effect (the increase-phenomenon of the discharge current) in a gas plasma in the case where electrons are scattered only by heavy neutral atoms was only touched upon. In this work, under the condition that electrons are scattered by heavy neutral atoms and by the Coulomb force of heavy helium ions, the dependences of "the drift velocity of electrons” and "the increase-phenomenon of the discharge current in the magnetoresistance effect” on the ionization-degrees and the active radii of the Coulomb force of a helium ion are examined. And it is pointed out that the increase-phenomenon of the discharge current in the magnetoresistance effect appears from neither the wellknown Langevin equation nor the Fokker-Planck equation. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 429-440 1434-6060 65:3<429 2011 65 10053 https://doi.org/10.1140/epjd/e2011-10464-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-10464-2 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Nagata M. Nippon Electronic Engineering College, Satunai-cho, Noboribetsu-shi, Hokkaido, Japan aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/3(2011-12-01), 429-440 1434-6060 65:3<429 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer