ISO/TS 23878:2024
Nanotechnologies — Positron annihilation lifetime measurement for nanopore evaluation in materials
détails du produit
This document is not applicable to thin surface layers (that are less than several micrometers).
This document does not apply to measuring:
— non-positronium forming materials;
— positronium-forming materials that induce a spin conversion reaction;
— positronium-forming materials that contain chemicals influencing the annihilation process of ortho-positronium by chemical reactions;
— positronium-forming materials that contain mesoporous silica gels with a large contribution from the three-gamma annihilation process.