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Updated: Jun 8, 2026
09:53
Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet (VUV) Synchrotron Radiation
Published on: October 30, 2012
Broadband extreme-ultraviolet survey spectrometer for short-time-scale experiments
Applied Optics
|October 12, 2010
Summary
A new spectrometer system records extreme-UV impurity spectra in magnetic fusion research. It uses a fiber-optic coupler and a fast photodiode array for efficient, synchronized data collection.
Area of Science:
- Plasma Physics
- Spectroscopy
- Materials Science
Background:
- Magnetic fusion research requires detailed analysis of plasma impurities.
- Existing spectrometer systems can be slow, expensive, or complex.
Purpose of the Study:
- To develop a fast, inexpensive spectrometer for extreme-UV impurity spectra.
- To simplify vacuum system requirements in magnetic fusion devices.
Main Methods:
- Utilized a sodium-salicylate-coated fiber-optic coupler to transmit light out of vacuum.
- Employed a microchannelplate-intensified, linear, self-scanning photodiode array detector.
- Implemented a custom control circuit for synchronized, high-speed (1 ms readout) data acquisition.
Main Results:
- Successfully recorded extreme-UV impurity spectra.
- Achieved readout speeds four times faster than the manufacturer's maximum rating.
- Demonstrated a nearly flat focal field over the fiber-optic coupler's aperture.
Conclusions:
- The developed spectrometer system is fast, inexpensive, and effective for impurity analysis in magnetic fusion research.
- The fiber-optic coupler simplifies vacuum requirements.
- High-speed, synchronized data acquisition enables better experimental control and analysis.
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