Low Temperature Physics: 42, 584 (2016); https://doi.org/10.1063/1.4959017
Fizika Nizkikh Temperatur: Volume 42, Number 7 (July 2016), p. 743-747    ( to contents , go back )

Optical absorption and luminescence studies of fast neutron-irradiated complex oxides for jewellery applications

N. Mironova-Ulmane, V. Skvortsova, and A.I. Popov

Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., Riga LV-1063, Latvia
E-mail: nina@cfi.lu.lv
pos Анотація:

Received May 12, 2016

Abstract

We studied the optical absorption and luminescence of agate (SiO2), topaz (Al2[SiO4](F,OH)2), beryl (Be3Al2Si6O18), and prehnite (Ca2Al(AlSi3O10)(OH)2) doped with different concentrations of transition metal ions and exposed to fast neutron irradiation. The exchange interaction between the impurity ions and the defects arising under neutron irradiation causes additional absorption as well as bands’ broadening in the crystals. These experimental results allow us to suggest the method for obtaining new radiation-defect induced jewellery colors of minerals due to neutron irradiation.

PACS: 61.80.Hg Neutron radiation effects;
PACS: 61.80.–x Physical radiation effects, radiation damage;
PACS: 78.60.–b Other luminescence and radiative recombination.

Key words: absorption, luminescence, neutron irradiation.

Published online: May 25, 2016

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