The emission spectrum of Erbium-doped fluoride crystals excited by soft X-rays in the (400–1700) nm wave-length range is investigated between 3.2 K and 300 K. The largest component of the crystals emission is observed in the infrared range, which corresponds to a light yield of several tens of photons/keV. Such a large value is caused by energy transfer processes between the Erbium ions which convert the excitation of a dopant ion at high energies into the emission of multiple infrared photons. The present results show that this mechanism could be exploited to realize scintillators of high light yield.
High infrared light yield of Erbium-doped fluoride crystals
F. Chiossi
;A. F. Borghesani;C. Braggio;G. Carugno
2020
Abstract
The emission spectrum of Erbium-doped fluoride crystals excited by soft X-rays in the (400–1700) nm wave-length range is investigated between 3.2 K and 300 K. The largest component of the crystals emission is observed in the infrared range, which corresponds to a light yield of several tens of photons/keV. Such a large value is caused by energy transfer processes between the Erbium ions which convert the excitation of a dopant ion at high energies into the emission of multiple infrared photons. The present results show that this mechanism could be exploited to realize scintillators of high light yield.
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Descrizione: Accepted version. DOI: 10.1016/j.jlumin.2019.116883
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