Numerical analysis of electron optical system with microchannel plate

Numerical analysis of electron optical system with microchannel plate


Shymanska, A. (YEAR). Numerical Analysis of Electron Optical System with Microchannel Plate. Journal Title, Volume Number(Issue Number), Page Numbers. 


  • Electron optical system
  • Microchannel plate
  • Electrostatic field
  • Electron trajectories
  • Modulation-transfer-function
  • Numerical analysis


This article describes how to numerically design image converters and intensifiers. 


The article presents a computational algorithm for designing an inverting electron optical system (EOS) with microchannel amplifiers for image intensification devices. The algorithm focuses on achieving a flat image surface for optimal image quality, which is crucial when using microchannel plates (MCPs) as amplifiers. The author emphasizes that a flat image surface ensures uniform image quality across the screen. The study also investigates the impact of system parameters, such as the photocathode radius and the distance between the photocathode and anode, on the curvature of the image surface and image distortion. Numerical experiments, detailed in the article, demonstrate that specific configurations of these parameters lead to a nearly flat image surface, minimizing distortion and enhancing resolution.

The article further explains that the modulation transfer function (MTF) serves as a measure of the imaging system's resolution. It highlights the impact of the initial energy of photoelectrons, influenced by factors like the frequency of incident light and the type of photocathode, on the EOS's resolution. Lower initial energy electrons, as per the study, result in better focusing and improved resolution.

Key Findings & Contributions: The article reports successfully developing an EOS with desirable characteristics like uniform image quality, low distortion, and high resolution. Notably, the system operates at a low applied voltage, minimizing noise from the MCP, a factor crucial for the visual acuity of such devices. The article provides a comprehensive analysis of an essential component of image intensification devices, contributing to the understanding and design of high-performance imaging systems.


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