What is it about?
This is about using metallic foil back lighter to measure the EXAFS of compressed Titanium on the high energy facility. Usually, an implosive capsule is used as back lighter for EXAFS measurement on high energy facility, but its disadvantage is the low efficiency due to low atomic number. In order to improve the laser-X-ray conversion efficiency, metallic foils were used as the back lighters for the EXAFS measurement. This article suggests that the metallic foils can be used to measure EXAFS spectrum, but more works have to be done to get a good signal.
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Photo by Dynamic Wang on Unsplash
Why is it important?
The EXAFS on high energy facility can diagnose dynamic compressed materials, and this can be a powerful tool to high energy density physics. It can give out thermal parameters like compression and temperature, and it can help study crystal structural phase transition under pressure, revealing the microstructure of the materials. The key component of carrying an experiment of EXAFS measurement on high energy facility is the back lighter. The metallic foil back lighter is efficient to generating continuum X-ray emission because of its high atomic number, and the configuration can be more flexible. This can specially benefit that who wants to carry on an EXAFS study on laser facility with lower output.
Perspectives
I am a researcher in China, my interest is now on using EXAFS technique to diagnose ramp compressed material on high energy facilities. My research is focusing on how to make it more easy, more efficient, more reliable.
yun hu
Yulin University
Read the Original
This page is a summary of: Extended x-ray absorption fine structure measurement of ramp compressed Ti using laser-irradiated metallic foil as x-ray source on SGIII prototype laser facility, AIP Advances, March 2023, American Institute of Physics,
DOI: 10.1063/5.0142416.
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