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Updated: May 17, 2026
10:12
Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
Published on: June 19, 2018
Imaging x-ray Thomson scattering spectrometer design and demonstration (invited)
E J Gamboa1, C M Huntington, M R Trantham
1University of Michigan, Ann Arbor, Michigan 48105, USA. eliseo@umich.edu
The Review of Scientific Instruments
|November 7, 2012
Summary
A new imaging x-ray Thomson spectrometer (IXTS) provides spatial resolution for diagnosing laser-created plasmas. This advancement enables precise measurement of temperature profiles in laboratory astrophysics experiments.
Area of Science:
- Laboratory astrophysics
- Plasma physics
- X-ray spectroscopy
Background:
- Intense laser irradiation creates unique material conditions with gradients.
- X-ray Thomson scattering is vital for plasma parameter measurement.
- Previous methods lacked spatial resolution for inhomogeneous plasmas.
Purpose of the Study:
- To develop an imaging x-ray Thomson spectrometer (IXTS) for spatially resolved plasma diagnostics.
- To enhance the diagnosis of inhomogeneous plasmas created in laboratory astrophysics.
Main Methods:
- Development of an IXTS utilizing a toroidally curved crystal for x-ray diffraction.
- Employing a focusing geometry for high brightness and improved dispersion linearity.
- Utilizing the Omega laser facility for experimental validation.
Main Results:
- The IXTS provides high-resolution, spatially resolved spectral dispersion of scattered x-rays.
- Demonstrated ability to localize noise sources and improve diagnostic linearity.
- Preliminary measurements of a shocked carbon foam's temperature profile were obtained.
Conclusions:
- The IXTS is a significant advancement for diagnosing laser-produced plasmas with spatial resolution.
- Enables detailed characterization of temperature, density, and ionization gradients.
- Opens new avenues for studying extreme material conditions in laboratory astrophysics.
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