Analysis of non-spherical grid geometry for distortion-free LEED apparatus with micro channel plate.

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Other Title
  • 二次電子増倍板付きＬＥＥＤ装置のひずみ補正に用いる非球面グリッドの解析
  • 2ジ デンシ ゾウバイイタツキ LEED ソウチ ノ ヒズミホセイ ニ モチイ

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Description

A design of non-spherical grid structure for the distortion-free LEED apparatus with a micro channel plate (MCP) is described. The grid structure is assumed as an interface of two electrostatic potentials. The potential interface refracts the diffracted electrons and the LEED patterns can be projected on the MCP just like those observed on a spherical fluorescent screen. The shape of the potential interface is described by a differential equation and numerically calculated for several conditions. The most appropriate geometry is determined by the easiness of the mechanical construction. The effect of energy distribution of diffracted electrons is numerically estimated and the deviation is proved to be negligibly small for most applications.

Journal

  • Shinku

    Shinku 28 (1), 42-46, 1985

    The Vacuum Society of Japan

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