Scintillation properties of new ultrafast crystals Tm:Yb$_3$Al$_5$O$_{12}$ and Tm:Ho:Yb$_3$Al$_5$O$_{12}$

A. I. Zagumennyi^a, M. V. Belov^b, V. I. Vlasov^a, Yu. D. Zavartsev^a, M. V. Zavertyaev^b, V. A. Kozlov^b, N. V. Pestovskii^b, S. Yu. Savinov^b, V. S. Tskhai<sup>b

a</sup> Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: New crystal scintillators Tm:Yb$_3$Al$_5$O$_{12}$ and Tm:Ho:Yb$_3$Al$_5$O$_{12}$ having ultrashort decay time were grown for the first time. The pulsed cathodoluminescence spectra of the new scintillators, light output, and their decay times have been investigated. It is shown that the decay time constant of the scintillation pulse of Tm:Yb$_3$Al$_5$O$_{12}$ and Tm:Ho:Yb$_3$Al$_5$O$_{12}$ crystals is 0.9/6 ns and 0.7/4.8 ns, respectively.

Keywords: scintillating crystals, gamma radiation, scintillation time, pulsed cathodoluminescence.

Received: 06.06.2025
Revised: 01.07.2025
Accepted: 03.07.2025

DOI: 10.61011/PJTF.2025.19.61144.20399

Bibliographic databases:

•