Radiation defects and transition ions interaction in magnesium oxide

V. Skvortsova; N. Mironova-Ulmane; U. Ulmanis

doi:10.1016/j.nima.2007.05.063

Radiation defects and transition ions interaction in magnesium oxide

V. Skvortsova^*
, N. Mironova-Ulmane
, U. Ulmanis

^*Corresponding author for this work

University of Latvia

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

The absorption spectra of nickel and manganese doped and pure MgO single crystals were investigated before and after fast neutron irradiation and after annealing. It is shown that the fast neutron irradiation leads to the formation of two types complex center: "Me²⁺-F⁺ (or F) center" and "Me³⁺-V_Mg". From the behavior of the ∼570 and ∼357 nm absorption bands during annealing the activation energies of the corresponding defects are determined. The obtained activation energy values (E_a<1 eV) allow us to assume that the transition ions play an important role in the migration of vacancies and interstitials.

Original language	English
Pages (from-to)	434-437
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	580
Issue number	1 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nima.2007.05.063
Publication status	Published - 21 Sept 2007

Keywords

Magnesium oxide
Radiation defects
Transition metal oxide

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10.1016/j.nima.2007.05.063

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title = "Radiation defects and transition ions interaction in magnesium oxide",

abstract = "The absorption spectra of nickel and manganese doped and pure MgO single crystals were investigated before and after fast neutron irradiation and after annealing. It is shown that the fast neutron irradiation leads to the formation of two types complex center: {"}Me2+-F+ (or F) center{"} and {"}Me3+-VMg{"}. From the behavior of the ∼570 and ∼357 nm absorption bands during annealing the activation energies of the corresponding defects are determined. The obtained activation energy values (Ea<1 eV) allow us to assume that the transition ions play an important role in the migration of vacancies and interstitials.",

keywords = "Magnesium oxide, Radiation defects, Transition metal oxide",

author = "V. Skvortsova and N. Mironova-Ulmane and U. Ulmanis",

year = "2007",

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doi = "10.1016/j.nima.2007.05.063",

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journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

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Radiation defects and transition ions interaction in magnesium oxide. / Skvortsova, V.; Mironova-Ulmane, N.; Ulmanis, U.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 580, No. 1 SPEC. ISS., 21.09.2007, p. 434-437.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Radiation defects and transition ions interaction in magnesium oxide

AU - Skvortsova, V.

AU - Mironova-Ulmane, N.

AU - Ulmanis, U.

PY - 2007/9/21

Y1 - 2007/9/21

N2 - The absorption spectra of nickel and manganese doped and pure MgO single crystals were investigated before and after fast neutron irradiation and after annealing. It is shown that the fast neutron irradiation leads to the formation of two types complex center: "Me2+-F+ (or F) center" and "Me3+-VMg". From the behavior of the ∼570 and ∼357 nm absorption bands during annealing the activation energies of the corresponding defects are determined. The obtained activation energy values (Ea<1 eV) allow us to assume that the transition ions play an important role in the migration of vacancies and interstitials.

AB - The absorption spectra of nickel and manganese doped and pure MgO single crystals were investigated before and after fast neutron irradiation and after annealing. It is shown that the fast neutron irradiation leads to the formation of two types complex center: "Me2+-F+ (or F) center" and "Me3+-VMg". From the behavior of the ∼570 and ∼357 nm absorption bands during annealing the activation energies of the corresponding defects are determined. The obtained activation energy values (Ea<1 eV) allow us to assume that the transition ions play an important role in the migration of vacancies and interstitials.

KW - Magnesium oxide

KW - Radiation defects

KW - Transition metal oxide

UR - https://www.scopus.com/pages/publications/34548274661

U2 - 10.1016/j.nima.2007.05.063

DO - 10.1016/j.nima.2007.05.063

M3 - Article

AN - SCOPUS:34548274661

SN - 0168-9002

VL - 580

SP - 434

EP - 437

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1 SPEC. ISS.

ER -

Radiation defects and transition ions interaction in magnesium oxide

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