First Measurement of the Nuclear-Recoil Ionization Yield in Silicon at 100 eV

(SuperCDMS Collaboration)

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6 Scopus citations

Abstract

We measured the nuclear-recoil ionization yield in silicon with a cryogenic phonon-sensitive gram-scale detector. Neutrons from a monoenergetic beam scatter off of the silicon nuclei at angles corresponding to energy depositions from 4 keV down to 100 eV, the lowest energy probed so far. The results show no sign of an ionization production threshold above 100 eV. These results call for further investigation of the ionization yield theory and a comprehensive determination of the detector response function at energies below the keV scale.

Original languageEnglish (US)
Article number091801
JournalPhysical review letters
Volume131
Issue number9
DOIs
StatePublished - Sep 1 2023

Bibliographical note

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© 2023 American Physical Society.

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