X-ray Fluorescence Multi-Element Dynamic and Still Imaging
By (author) Kenji Sakurai, Wenyang Zhao
Not available to order
Publication date:
31 December 2023Length of book:
200 pagesPublisher
Institute Of Physics PublishingISBN-13: 9780750332149
At present XRF gives researchers an image of the spatial distribution of the elements in a sample. For many years considerable effort has gone in developing real-time systems that can generate moving images exposing the chemical makeup of dynamic systems. This has significant application in following chemical reactions or the movement of chemicals, especially in biological samples. As chemical reactions are coupled with the transportation and redistribution of elements, such a capability would be an excellent tool for elucidating many unknown phenomena in pure sciences as well as in medical and industrial applications. Until recently capturing moving images with XRF, has been extremely challenging.
The key to creating successful dynamic XRF images, facilitated by developments in beam optics, is to change the imaging strategy from scanning beams to wide beam, or projection illumination. However present detector technology has constrained the application of this technique due to limits in the efficiency and accuracy of energy-dispersive two-dimensional detectors in the X-ray regime. Recent advances in pixel sensor technology in both charge-coupled-device (CCD) and complementary-metal-oxide semiconductor (CMOS) cameras in the X-ray regime has allowed the realization of wide beam XRF imaging samples in real-time. Here the author, one of the leading developers of the technique, reviews and demonstrates the technology and operational requirements to create moving XRF images that can be used for the creation of snapshot and moving images to track chemical reactions and dynamic systems and how the technique can be applied to many scientific fields.