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arXiv · 2405.19475

Detection of Low-Energy Electrons with Transition-Edge Sensors

Carlo Pepe·Benedetta Corcione·Francesco Pandolfi·Hobey Garrone·Eugenio Monticone·Ilaria Rago·Gianluca Cavoto·Alice Apponi·Alessandro Ruocco·Federico Malnati·Danilo Serazio·Mauro Rajteri
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Abstract

We present the first detection of electrons with kinetic energy in the 100 eV range with transition-edge sensors (TESs). This has been achieved with a $(100\times 100)$ $\mu$m$^2$ Ti-Au bilayer TES, with a critical temperature of about 84 mK. The electrons are produced directly in the cryostat by an innovative cold source based on field emission from vertically-aligned multiwall carbon nanotubes. We obtain a Gaussian energy resolution between 0.8 and 1.8 eV for fully-absorbed electrons in the $(90-101)$ eV energy range, which is found to be compatible with the resolution of this same device for photons in the same energy range. This work opens new possibilities for high-precision energy measurements of low-energy electrons.

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Carlo Pepe, Benedetta Corcione, Francesco Pandolfi, Hobey Garrone, Eugenio Monticone, Ilaria Rago, Gianluca Cavoto, Alice Apponi, Alessandro Ruocco, Federico Malnati, Danilo Serazio, Mauro Rajteri. 2024-05-29. Detection of Low-Energy Electrons with Transition-Edge Sensors. https://doi.org/10.1103/physrevapplied.22.l041007

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