Object structure

Journal or Publication Title:

Armenian Journal of Physics

Date of publication:

2019

Volume:

12

Number:

4

ISSN:

1829-1171

Title:

Investigation of Luminescence Processes in YAG Single Crystals Irradiated by 50 MEV Electron Beam

Creator:

V. V. Harutyunyan ; E. M. Aleksanyan ; V. C. Baghdasaryan ; P. B. Kostanyan ; G. Bondarenko ; M. Kirm ; S. Vielhauer

Corporate Creators:

A. Alikhanyan National Science Laboratory (YerPhI), Yerevan, Armenia ; National Research University “High School of Economics”, (NRU HSE), Moscow, Russia ; Institute of Physics, University of Tartu, Riia 142, 51014 Tartu, Estonia

Subject:

Physics ; Electromagnetism; electron and ion optics ; Optics

Coverage:

316-324

Abstract:

Absorption, emission and excitation spectra of 50 MeV electron beam irradiated and as-grown YAG single crystals were studied and compared in the 10-300 K temperature range using time-resolved luminescence spectroscopy under UV/VUV/XUV excitation by synchrotron radiation and cathodoluminescence. The emission spectra consist of intrinsic (excitonic) and defect related non-elementary bands in the VIS/UV range. It is shown that fast electrons create stable F and F+ color centers with characteristic emission and absorption bands in the visible/UV range. Induced absorption caused from these defects starts at 4.2 eV. Energy transfer from host to color centers is not efficient process.

Date created:

2019-12-31

Type:

Article

Location of original object:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան