Foundations of Molecular-Flow Networks for Vacuum System Analysis - 1st Edition - ISBN: 9780128186879

Foundations of Molecular-Flow Networks for Vacuum System Analysis

1st Edition

Authors: Nagamitsu Yoshimura
Paperback ISBN: 9780128186879
Imprint: Academic Press
Published Date: 1st October 2019
Page Count: 250
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Foundations of Molecular-Flow Networks for Vacuum System Analysis is the only book which covers desorption, adsorption, and outgassing in relation to molecular-flow networks. This book will be beneficial for academics, students and industry personnel working in field of ultra-high vacuum/vacuum for designing the equipment/set-up, as well as understanding the several processes related to vacuum. This book is fully supported with equations and case studies from industry. Prof Yoshimura brings to this book a lifetime’s experience of working on vacuum technology in industry and academia.

Vacuum technology is extensively used in large synchrotrons and other large accelerators, as well as in many other smaller industrial and scientific facilities. Many of these systems, are not easy to simulate and therefore to foresee its pressure evolution and gas flow through its connections. Since most of such vacuum systems operate under molecular flow, this book will help engineers and scientists to properly model the system with electrical equivalents enabling its simulation with electrical circuits simulators.

Key Features

  • Explains how to design, model and simulate vacuum systems to obtain satisfactory pressure distributions
  • Offers a practical description of the molecular flow providing techniques to design molecular flow networks of vacuum systems and processes
  • Explores equivalence with electrical components to help readers with simulation using free software such as LTSPICE


Engineers, Scientists, Industry Professionals, Students who are working with vacuum technology

Table of Contents

  1. Molecular-Flow Networks
    2. Desorption, Adsorption, and Outgassing
    3. Outgassing Rates of System-Component Materials
    4. Molecular-Flow Conductance and Gas-Flow Patterns
    5. Total and Partial Pressure Gauges for Ultrahigh Vacuum Use


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© Academic Press 2020
Academic Press
Paperback ISBN:

About the Author

Nagamitsu Yoshimura

In 1965 he graduated from Osaka Prefecture University, Engineering Division and immediately began working for JEOL LTD. In 1985 he received a Doctor of Engineering degree from Osaka Prefecture University. His Ph.D. Thesis was on “Research and Development of High-Vacuum System of Electron Microscopes” (in Japanese). In 1995 he qualified as a consultant engineer in the field. From 1965 to 2002 he engaged in research and development of vacuum-related technology in electron microscopes for more than 35 years at JEOL-group companies. He retired in 2002. He has authored 2 books for Springer.

Affiliations and Expertise

Japan Electron Optics Laboratory (JEOL), Retired

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