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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
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Published on: August 25, 2016

High resolution flat crystal spectrometer for the Shanghai EBIT.

J Xiao1, Y Gao, X Zhang

  • 1EBIT Laboratory, Institute of Modern Physics, Fudan University, Shanghai 200433, People's Republic of China.

The Review of Scientific Instruments
|December 3, 2008
PubMed
Summary

A new high-resolution flat crystal spectrometer for electron beam ion traps (EBIT) achieves under 1 eV energy resolution. This advanced instrument successfully observed tungsten lines at Shanghai EBIT, demonstrating its effectiveness for X-ray spectroscopy.

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Area of Science:

  • Atomic Physics
  • X-ray Spectroscopy
  • Plasma Physics

Background:

  • Electron Beam Ion Traps (EBIT) are crucial for studying highly charged ions.
  • High-resolution X-ray spectroscopy is essential for characterizing atomic structures and processes in plasmas.
  • Existing spectrometers may have limitations in energy range or resolution for specific EBIT applications.

Purpose of the Study:

  • To design and report on a novel high-resolution flat crystal spectrometer for the Shanghai EBIT.
  • To evaluate the spectrometer's performance in terms of energy range, angular coverage, and energy resolution.
  • To demonstrate the spectrometer's operational capability on an actual EBIT.

Main Methods:

  • The spectrometer utilizes a flat crystal design with interchangeable crystals.
  • It operates within a vacuum environment and employs a charge-coupled device detector.
  • Energy resolution was measured using an X-ray generator and validated on the Shanghai EBIT.

Main Results:

  • The spectrometer covers an energy range of 0.5 to 10 keV.
  • Effective Bragg angles from 15 to 75 degrees are achievable with three simultaneous crystals.
  • An energy resolution better than 1 eV was achieved for the 4.5 keV Kalpha(1) line.
  • Successful observation of tungsten lines around 3.2 keV on the Shanghai EBIT was performed.

Conclusions:

  • The developed high-resolution flat crystal spectrometer is a capable instrument for EBIT-based X-ray spectroscopy.
  • It meets the design specifications for energy range and angular coverage.
  • The demonstrated sub-eV resolution and successful EBIT operation confirm its utility for studying atomic spectra of highly charged ions.