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arXiv · 2512.03826

Recent Developments of the VOXES Von Hamos X-ray Spectrometer for Laboratory XES and XAS Studies

Simone Manti·Alberto Clozza·Gabriel Moskal·Kristian Piscicchia·Diana Sirghi·Florin Sirghi·Catalina Curceanu·Alessandro Scordo
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Abstract

VOXES is a Von Hamos X-ray spectrometer developed at the INFN National Laboratories of Frascati for high-resolution laboratory X-ray spectroscopy in the 5--20~keV range. It uses curved mosaic crystals and motorized positioning stages to perform wavelength-dispersive X-ray fluorescence (WD-XRF) with sub-10~eV tunable resolution for extended and dilute samples. Recent developments include the integration of an energy-dispersive X-ray fluorescence (ED-XRF) line based on a silicon pin-diode detector, which enables flux monitoring and simultaneous ED and WD measurements. In addition, a dedicated liquid-sample holder has been introduced, and a Y-shaped support geometry, crucial for switching to a transmission layout, provides mechanical compatibility with laboratory XAS, now under implementation. These upgrades expand the versatility and automation of VOXES, strengthening its role as a table-top platform for laboratory X-ray spectroscopy.

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Simone Manti, Alberto Clozza, Gabriel Moskal, Kristian Piscicchia, Diana Sirghi, Florin Sirghi, Catalina Curceanu, Alessandro Scordo. 2025-12-03. Recent Developments of the VOXES Von Hamos X-ray Spectrometer for Laboratory XES and XAS Studies. https://arxiv.org/abs/2512.03826

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