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K. Yamauchi, Y. Takenchi, Y. Ogino, M. Watanabe, A. Okino, Y. Sunaga and E. Hotta, “Neutron Production Rate and Plasma Characteristics of Spherically Convergent Beam Fusion,” Electrical Engineering in Japan, Vol. 135, No. 2, 2001, pp. 1-8. doi:10.1002/eej.1

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• TITLE: Investigations of Ion Confinement by Direct Current Coaxial Glow Discharge

  AUTHORS: Alaa Abu-Hashem, Mohamed Ali Hassouba, Mohamed Mahmoud Masoud

  KEYWORDS: Inertial Electrostatic Confinement; Virtual Anode; Coaxial Glow Discharge

  JOURNAL NAME: Journal of Modern Physics, Vol.3 No.1, January 4, 2012

  ABSTRACT: A cylindrical dc coaxial glow discharge system with inner grid cathode was designed for ion confinement, and success- fully operated with low discharge current. The plasma is formed inside the cylindrical grid cathode. The discharge cur- rentvoltage characteristic curves and Paschen curve are obtained at different gas pressures. Langmuir probes are used to determine the electron temperature and the plasma density. The electron energy distribution functions indicated that, two groups of electrons, appear in radial interval from r = 12 mm up to r = 5 mm. One group of electrons with most probable energy around 1 eV appeared from r = 5 mm up to r = 0. The electron temperature Te is increased with increasing the current and also with moving from the center toward the grid cathode. Poisson’s equation is used to calculate the plasma density at different radial positions. The plasma density measured by the single probe is around 1015 m-3. A comparison is obtained between calculated plasma density and that measured by Langmuir probes. Experimental and calculated results have the same profile.