Effects of γ-radiation on fluorite crystals with a trivalent rare-earth ions-Reference-Cited by-同舟云学术

Effects of γ-radiation on fluorite crystals with a trivalent rare-earth ions

Published:2023-07-26 Issue:2(114) Volume: Page:195-202
ISSN:1994-6716
Container-title:Voprosy Materialovedeniya
language:
Short-container-title:Vopr. materialoved.

Author:

Sarkisov S. E.¹,Yusim V. A.¹

Affiliation:

1. National Research Center “Kurchatov Institute”

Abstract

The paper considers phenomena of formation of color centers due to intrinsic and impurity defects in fluorite crystals activated by rare-earth ions Pr3+, Nd3+, Yb3+ under γ- and UV-radiation. Using CaF2 activated with Yb3+ and Pr3+ ions as an example, the work shows the effect of the photodynamic process on the photochemical resistance to formation of color centers of a Yb-containing crystal. It also demonstrates the effect of heating on the restoration of the original color of a Pr-containing crystal after γ-radiation as a result of change in the electronic state of praseodymium ions. The features of the formation of ions in the R2+ state in CaF2:R3+ (R3+ = Pr, Nd, Yb) crystals after γ-irradiation are investigated and explained, and quantitative estimates of the R3+→R2+ conversion processes are given.

Publisher

FSUE CRISM Prometey

Subject

General Earth and Planetary Sciences,General Environmental Science

Reference11 articles.

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