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Jatobá

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Jatoba is the popular name of the genus of trees Hymenaea L., common throughout Latin America and especially the Amazon rainforest. (Photo: Domínio Público)

OVERVIEW

Jatoba is a beamline that will cover the range of High Energy X-rays, which enable a large penetration of X-rays in all materials, reaching centimeters in materials such as of steel and millimeters in materials containing lead.

Two main experimental stations will be available to conduct structural research experiments of materials such as metals, rocks, ceramics and concrete. One of the stations will be dedicated to high energy X-ray diffraction with in situ thermomechanical simulation. This station is installed in UVX and has been used for analysis of structural surface modifications in steel and other structural materials. While the penetration of X-rays produced in UVX reaches only a few microns of the surface of these materials, this same experiment in the Jatoba beamline can probe the entire volume of the sample. The second experimental station will be similar to the Mogno X-ray tomography beamline with the difference of enabling the study of samples of thicker and heavier materials.

For obtaining the collimated and monochromatic beam in these two experimental stations, this beamline will use X-ray refractive lenses and Si transmission monochromators. The high energies involved impose challenging technical requirements for cooling and radiological protection at all beamline elements.

One of the most important examples of analysis that can be done in this beamline is the tomography of carbonate rocks of the pre-salt geological layer. With the high power of this beamline and specially designed high-resolution detectors, three dimensional images of rocks with a few centimeters could be made in a matter of minutes with a resolution of 40 micrometers. It will even allow the observation in real time of the dynamics of percolation of fluids under pressure, an important problem for the extraction of petroleum.