Confocal micro-X-ray fluorescence spectroscopy with a liquid metal jet source

Abstract

To further widen the applicability of confocal micro-X-ray fluorescence spectroscopy (CMXRF) a novel setup using a liquid metal jet source as excitation was build up and characterized.

Quantitative Analysis and 2D/3D Elemental Imaging of Cocoa Beans Using X-ray Fluorescence Techniques

“…This possibility to investigate deep into material nondestructively renders 3D elemental imaging possible. , For high sensitivity, synchrotron radiation excitation is advisable. In the following, two scanning methods will be presented: XSM and FXT (see Figure ).…”

Increasing the sensitivity of micro X-ray fluorescence spectroscopy through an optimized adaptation of polycapillary lenses to a liquid metal jet source

“…The rst one (A) is an especially adapted lens designed for the LMJS, which was already used in a previous confocal mXRF setup. 15 This lens' maximal transmission was designed to be in the range of the energy of the Ga K uorescence lines and the rst focal length was minimized according to the LMJS geometry constraints. The second one (B) is a lens which is typically used for commercial mXRF setups as the M4 Tornado.…”

“…13 Novel brilliant X-ray sources, which use a liquid Ga-In alloy as anode material are a promising upgrade for laboratory mXRF and especially confocal mXRF setups. 15 Conventional X-ray tubes using solid anodes suffer from electron beam power density restrictions due to thermal heating possibly leading to melting of the anode material. 16 Due to this, commonly used microfocus X-ray tubes with a source spot size of 50 mm  50 mm are operated with a maximum power of 30 W to 50 W, 17 resulting in an electron beam power density of $15 kW mm À2 .…”

Plenoptic x-ray microscopy

“…For 3D imaging more advanced algorithms could be required 45,46 . A more powerful x-ray source (a rotating anode 47,48 , metal jet source 49 or a diamond hybrid anode x-ray tube 50 ) and a larger detector (up to 16M pixel) 51 could decrease the acquisition times by over an order of magnitude. Since the experimental setup is compatible with a parallel beam illumination [Fig.…”