New tilted-poles Wien filter with enhanced performance

Journal Article · Wed Mar 01 00:00:00 EST 1989 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1140437· OSTI ID:6386293

Leal-Quiros, E; Prelas, M A

The Wien filter is an E x B deflecting analyzer with the electrostatic field perpendicular to the magnetostatic field. The twofold functions of the Wien filter are as an energy analyzer as well as a mass analyzer. It has very high resolution for paraxial charged-particle beams with V = E/B, the Wien velocity. Two Wien filters, a tilted-poles Wien filter, and a classical parallel-rectangular-poles Wien filter were built and tested for electrons up to 3.5 keV and protons beams of 200 eV. (The tilted-poles Wien filter is a new diagnostic developed by the authors.) The performance of the two is compared, and the tilted-poles Wien filter has superior resolution to the classical Wien filter. Both Wien filters appear to have features useful for high-temperature plasma diagnostics, including simultaneous measurement of energy and mass spectra, and high resolution.

• Research Organization: Fusion Research Laboratory, Nuclear Engineering Program, University of Missouri-Columbia, Columbia, Missouri 65211
• OSTI ID: 6386293
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 60:3
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTROSTATIC ANALYZERS
PERFORMANCE TESTING
PLASMA DIAGNOSTICS
CHARGED PARTICLES
DESIGN
ENERGY SPECTRA
EQUATIONS OF MOTION
MASS SPECTRA
BEAM ANALYZERS
DIFFERENTIAL EQUATIONS
EQUATIONS
PARTIAL DIFFERENTIAL EQUATIONS
SPECTRA
TESTING
700102* - Fusion Energy- Plasma Research- Diagnostics