Author Type

Graduate Student

Date of Award

1978

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Abstract

Hydrogen plasmas were produced in an axially symmetric magnetic field which was nearly uniform in the Lisitano coil region. The field could be converted from a shallow mirror to a deep mirror (R = 44), to a cusp geometry by varying the current ratio in two sets of magnet coils. Unguarded Langmuir probes and a periodic potential probe proved unsatisfactory due to sheath growth. A gridded Langmuir probe measured ion temperature of 26 eV and electron temperature of 9 eV, with ion density 7 to 10x10^8 cm^-3. The magnetic boundary value problem was solved analytically and comparison with previous experiments at Florida Atlantic University showed the electron temperature to depend on the magnetic field gradient in the Lisitano coil. It was also seen that high voltage (250 V) on the periodic probe was not ionizing neutrals.

Extent

82 p.

Comments

FAU Electronic Theses and Dissertations Collection|Thesis (M.S.)--Florida Atlantic University, 1978.|Charles E. Schmidt College of Science|FAU Electronic Theses and Dissertations Collection

Identifier

FADT13905

Format

pdf

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