New electrostatic energy analyzer for space plasma measurements

Arkady M. Ilyin, I A Ilyina

2007

Data confidence 70 medium

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Abstract

New electrostatic energy analyzer based on a cylindrical bounded field, intended for measurements of parallel flows of charged particles is described. The focusing field of this analyzer is a solution of a Laplace equation ∇ 2 U ( R , Z ) = 0 with boundary conditions U ( R 1 , Z ) = U ( R ,0) = U ( R , L ) = 0 and U ( R 2 , Z ) = V and restricted by concentric cylindrical surfaces of radii R 1 , R 2 and two flat surfaces perpendicular to the axis of symmetry. Regimes with a second -order focusing mode for several configurations with a different relative radius β = R 2 / R 1 were found and energy function shape and energy resolution ability were calculated. Combination of high energy resolution ability with high transmission and simple design makes this instrument very promising for a wide area of scientific and technological applications, in particular, for space plasma measurements.