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Related Experiment Videos

Miniature time-of-flight mass spectrometer using a flexible circuitboard reflector

Cornish1, Ecelberger, Brinckerhoff

  • 1Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723, USA.

Rapid Communications in Mass Spectrometry : RCM
|December 13, 2000
PubMed
Summary

A new miniature time-of-flight mass spectrometer design features an innovative gridless ion source, flexible circuit board ion reflector, and improved detector. This design substantially reduces noise and enhances resolution for field-portable applications.

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Area of Science:

  • Analytical Chemistry
  • Instrument Development
  • Mass Spectrometry

Background:

  • Traditional time-of-flight mass spectrometers often face limitations in noise, resolution, and portability.
  • Existing designs can be complex, expensive, and less suitable for rugged, field-portable applications.

Purpose of the Study:

  • To develop an innovative miniature time-of-flight mass spectrometer with enhanced performance and portability.
  • To introduce novel components for improved ion manipulation and detection.
  • To assess the feasibility of mass production for field-portable use.

Main Methods:

  • Development of a gridless, focusing ion source for high extraction energies and maintenance-free operation.
  • Construction of a novel ion reflector utilizing rolled flexible circuit board material.

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  • Implementation of an improved center-hole microchannel plate detector assembly to reduce inherent noise.

    • Main Results:

    • A prototype time-of-flight instrument demonstrated substantially reduced background noise compared to previous designs.
    • Improved spectral resolution was achieved with the new instrument.
    • The design enhancements significantly improve the potential for inexpensive, rugged mass production.

    Conclusions:

    • The developed miniature time-of-flight mass spectrometer offers significant advantages in noise reduction and resolution.
    • The innovative components facilitate a more robust and portable instrument.
    • This design enhances the feasibility of cost-effective, mass-produced instruments for field and remote applications.