Creation and Accumulation of Radiation Defects in Single Crystals of Magnesium Oxide : Research Aims and Methodology

• Autore: Surzhikov Anatoly
• Pubblicazione: Cham : , : Springer, , 2024; ©2024
• Edizione: 1st ed.
• Descrizione fisica: 1 online resource (163 pages)
• Altri autori: LysenkoElena
• Nota di contenuto: Intro -- Preface -- Introduction -- Contents -- 1 Structure, Properties, Point Defects and Radiation Defect Formation in Magnesium Oxide Crystals -- 1.1 Structure and Properties of MgO Crystals -- 1.1.1 Crystal Physical Properties -- 1.1.2 Energy Electronic Structure of MgO -- 1.1.3 Thermodynamic Equilibrium Defects -- 1.2 Color Centers of MgO Crystals -- 1.2.1 Electronic Color Centers -- 1.2.2 Hole Color Centers -- 1.2.3 Impurity Color Centers -- 1.2.4 Interstitial Defects -- 1.3 Radiation Defect Formation in Magnesium Oxide Crystals -- 1.3.1 Creation of Radiation Defects in the Anionic Sublattice of Magnesium Oxide Single Crystals -- 1.3.2 Creation of Radiation Defects in the Cationic Sublattice of Magnesium Oxide Single Crystals -- 2 Objects and Methods of Research Used in the Study -- 2.1 Installation of Pulsed Optical Spectroscopy -- 2.2 Installation for Studying the Angular Distributions of Annihilation Gamma Quanta -- 2.2.1 Radiation Detectors -- 2.2.2 Collimator System -- 2.2.3 Isotope and Sample Attachment Unit -- 2.2.4 Source of Positrons -- 2.2.5 The "Cedar" Electrode Device -- 2.2.6 Measurement Error -- 2.2.7 Calculation of Positron Absorption in Single Crystals of Magnesium Oxide -- 2.3 Dosimetry of the Radiation -- 2.3.1 High-Current Electron Beam -- 2.3.2 High-Energy Protons -- 2.3.3 Absorbed X-ray Radiation Energy -- 2.4 Additional Optical Absorption of Irradiated MgO (I) Crystals -- 3 Formation of Radiation Defects in MgO Crystals Under High-Temperature Proton Irradiation -- 3.1 Kinetics of the Change in the Intensity of the Absorption Band with a Maximum at 4.92 eV -- 3.2 Photo Luminescence of Irradiated MgO (I) Crystals -- 3.3 Proton Energy Losses in MgO (I) Crystals -- 3.3.1 Calculation of Proton Energy Losses Due to Ionization and Elastic Collisions. ; 3.3.2 Proton Energy Distribution Over the Depth of Irradiated MgO (I) Crystals -- 3.4 Distribution of F+-centers by Depth of MgO (I) Crystals Irradiated with Protons -- 3.5 Summary -- 4 Stabilization of Frenkel Defects in Crystals of Magnesium Oxide at Impact Displacement of Ions -- 4.1 Optical Absorption of MgO (II) Crystals -- 4.2 The Role of Trivalent Cations of Substitutive Impurities in the Phenomena of Stabilization of Radiation Defects in Magnesium Oxide -- 4.2.1 Kinetics of Accumulation of F+-Centers in Pure and Doped MgO (II) Crystals -- 4.2.2 Kinetics of Band Intensity Change with hvm = 5.6 eV -- 4.2.3 Annealing of F+-bands in Irradiated MgO (II) Crystals -- 4.3 Calculation of the Kinetics of Accumulation of Anionic Frenkel Defects in MgO Crystals Under Elastic Proton Scattering -- 4.4 Models of Interstitial Defects in Magnesium Oxide Crystals Irradiated with Protons at Room Temperature -- 4.4.1 Formation of Interstitial Defects Involving Pre-Radiation Imperfections of the Crystal -- 4.4.2 Interstitial Defects in Defect-Free Areas of MgO Crystals -- 4.5 Summary -- 5 Creation of F+-Centers in Proton Tracks at Low Irradiation Temperatures -- 5.1 Effect of Temperature on the Efficiency of Accumulation of F+-Centers in MgO During Proton Irradiation -- 5.1.1 Optical Absorption of MgO (I) Crystals Irradiated at Low Temperatures -- 5.1.2 Accumulation of Radiation Defects at Low Irradiation Temperatures -- 5.1.3 Effect of Temperature on Accumulation and Annealing of Centers in MgO (I) Crystals -- 5.2 Thermally Stimulated Conductivity of Irradiated MgO(I) Crystals -- 5.3 Nature of Low-Temperature Efficiency Change Accumulations of F+-centers -- 5.4 Summary -- 6 Accumulation of F-Type Color Centers in Crystals of Magnesium Oxide at High Excitation Densities Accelerated Electrons of Subthreshold Energy. ; 6.1 Accumulation of F+-Centers in Magnesium Oxide Crystals at High Excitation Densities by Accelerated Electrons -- 6.2 Effect of the Current Density of the Accelerated Electron Beam on the Accumulation of F+-Centers in Magnesium Oxide Crystals -- 6.3 Summary -- 7 Stabilization of Interstitial Oxygen Ions Formed Under the Action of a High-Current Electron Beam in the Crystal Lattice of Magnesium Oxide -- 7.1 About Possible Locations of Interstitial Oxygen Ions in the Crystal Lattice of Magnesium Oxide -- 7.2 Investigation of the Generation of F+-Color Centers in Single Crystals of Magnesium Oxide Under the Action of a High-Current Beam of Accelerated Electrons of Nanosecond Duration -- 7.3 Correlation in the Accumulation of F+-Color Centers and Changes in the Charge State of Impurity Iron Ions in Single Crystals of Magnesium Oxide under Irradiation with a High-Current Electron Beam -- 7.4 Influence of the Calcination Temperature of Magnesium Oxide Crystals on the Accumulation of Radiation Defects of Them -- 7.5 Summary -- 8 Experimental Study of Interstitial Oxygen Ions in Magnesium Oxide Crystals -- 8.1 Investigation of Photoluminescence in Magnesium Oxide Crystals Irradiated by a High-Current Electron Beam -- 8.2 Study of Positron Annihilation in Single Crystals of Magnesium Oxide -- 8.3 Summary -- Appendix -- References.
• Titolo autorizzato: Creation and Accumulation of Radiation Defects in Single Crystals of Magnesium Oxide
• ISBN: 9783031602078; 9783031602061
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910865245903321
• Lo trovi qui: Univ. Federico II