Positron and Positronium Chemistry X -- Preface, Committees and Sponsors -- Table of Contents -- Positrons and Free Volume Related Issues in Polymeric Systems: A Sketch of Günter Dlubek's Contributions -- Chapter 1: Fundamental Aspects -- Beyond the Point Ps Approximation -- Effects of Local Heating and Premelting in the Terminal Part of the e+ Track -- Towards the Positronium and Radiolytic Hydrogen Formation Mechanisms in Liquid Hydrocarbons -- Testing of the Extended Tao-Eldrup Model on Porous VP-DVB Copolymers -- Ps Bubble in Liquids -- The Free Volume Dynamics -- Study of Unbound HePs Using Exact Diagonalization Technique -- Chapter 2: Membranes -- Layer Structures of Composite Membranes for Water Filtration Elucidated by Variable-Energy Positron Annihilation -- Effect of Water on the Size Distribution of Free-Volume Holes in Nafion Membrane -- Annihilation Process of Positron in Degraded Nafion®-117 -- Study of Thin Nafion® Films for Fuel Cells Using Energy Variable Slow Positron Annihilation Spectroscopy -- Positronium Lifetimes and Gas Permeation in Aquivion® for Fuel Cells -- Chapter 3: Molecular Systems -- Positronium in Normal Alkanes -- The Influence of Admixtures in n-Alkanes on Electron Traps -- Motion of Molecules at Plateau Region: Case of Propylene Glycol -- "In Situ" Observation of Crystallization in Propylene Carbonate, Salol and M-Toluidine -- Encapsulation of Natural Flavors in Cyclodextrins: Free Volume Studies by PALS -- Modification of the Crystallographic Structure of Olanzapine during Solvation by PALS and X-Ray Diffraction Methods -- Molecular Packing of Carbohydrate Oligomer Encapsulants - A Free Volume Perspective -- Chapter 4: Confined Systems -- Annihilation Characteristics of Confined 2D Positronium -- Hexadecane in SiO2 Aerogels.

Phase Transition of Water Confined in Saponites Using Positron Annihilation Spectroscopy -- Topological Quasi-Positroniums in Graphite-Alkali Metal Intercalation Compounds -- Chapter 5: Liquids -- Positron Annihilation Parameters in Connection to Surface Phenomenon of Liquids -- Location of Phase Boundaries of Lyotropic Liquid Crystal Employing Positron Lifetime Spectroscopy and Electrical Conductivity Measurement -- Positron and Charged Ion Diffusion and the Effective Interactions in the Liquid Phase -- Chapter 6: Polymers -- In Situ Positron Lifetime Measurement for the Strained Polyethylene -- Positron Irradiation Effects in HDPE during PAL Measurement at Ambient Temperature -- Positron Lifetimes and Mechanical Properties of Gamma-Irradiated Ultra High Molecular Weight Polyethylene -- Positron Annihilation Lifetime of Irradiated Polyimide -- Effect of Crosslinkers on the Microstructure and Swelling Properties of the N-Isopropyl Acrylamide Gels: A Positron Annihilation Study -- Effect of Hydrophilicity of the Sidechains on the Amorphous Structure of Polypropylene Derivatives Studied by Positronium Lifetime Measurements -- Positron Lifetimes and Crystallinity of γ-Irradiated Polypropylenes -- Positronium Lifetime Study on Subnanoscopic Structure of Polyrotaxane -- New Organic-Inorganic Hybrid Ureasil-Based Polymer Materials Studied by PALS and SEM Techniques -- Depth Profile of Chemical Composition and Free Volume of Polyurethane-Urea/Clay Nanocomposite -- Relationships between Positron Lifetime and Dynamics of Polymers -- On the Relationship of the Relative Intensity I3 and a Cavity Number as Obtained from Computer Simulations -- Chapter 7: Porous Systems -- Argon Plasma Decomposition of Porogen in Mesoporous Silica Films Studied by Positron Annihilation -- o-Ps Lifetimes in Iron Containing Micro- and Mesoporous Media.

Study of the Behavior of Positronium Annihilation in Porous Silicon -- In Situ Monitoring of Adsorption and Desorption of n-Heptane on Porous Silica by Positron Annihilation Lifetime Spectroscopy -- Chapter 8: Non-Metallic Materials -- Positron and Positronium Annihilation as Probes to Identify Cation Substitution Effects in CoCrxFe2-xO4 -- Ni-Substitution Induced Inversion in ZnFe2O4 Seen by Positron Annihilation -- Positron Lifetime at Deep Donors of Radiation Origin in Proton - Irradiated FZ-Silicon Single Crystals -- Hydrogen Interaction with Defects in ZnO -- Hydrogen-Induced Defects of Subsurface Layer in ZnO Single Crystal Probed by a Slow Positron Beam -- Effect of Sintering on Defects in Yttria Stabilised Zirconia -- Positron Annihilation at Planar Defects in Oxides -- Evidence of the Participation of Electronic Excited States in the Mechanism of Positronium Formation in Substitutional Tb1-xEux(dpm)3 Solid Solutions Studied by Optical and Positron Annihilation Spectroscopies -- Inhibition of Positronium Formation in Yttria Stabilized Zirconia Nanopowders Modified by Addition of Chromia -- Chapter 9: Nuclear Materials -- Positron Annihilation Study of Neutron-Irradiated Nuclear Reactor Pressure Vessel Steels and their Model Alloy: Effect of Purity on the Post-Irradiation Annealing Behavior -- Vacancy Type Defects in Oxide Dispersion Strengthened Steels -- Defect Detection in Fe-Cr Alloys with Positron Annihilation Doppler Broadening Spectroscopy -- Thermal Annealing Influence on Ions Implanted Fe-Cr Model Alloys -- Positron Annihilation Measurements Performed on Oxide-Dispersion Strengthened Steels -- Chapter 10: Experimental Techniques -- Recent Developments and Future Plans for the Accelerator Based Slow Positron Facilities at AIST -- The LEPTA Facility for Fundamental Studies of Positronium Physics and Positron Spectroscopy.

Scoring Analysis of Design, Verification and Optimization of High Intensity Positron Source (HIPOS) -- Positronium Formation and Decay in Organic Scintillators for Neutrino Detection -- Sealed 22Na Sources for Positron Annihilation Lifetime Spectroscopy -- Design and Simulation of a Trap-Based Pulsed Slow Positron Beam -- Software for Digital Coincidence Doppler Broadening Setup -- Positron Annihilation Spectroscopy at LEPTA Facility -- An AMOC System with Two Detectors -- A New Scintillator Geometry for Positronium Time of Flight Measurement -- Keywords Index -- Authors Index.