Water-sensitive positron trapping modes in nanoporous magnesium aluminate ceramics

被引：27

作者：

Filipecki, J. ^{[1
]}

Ingram, A. ^{[2
]}

Klym, H. ^{[3
,4
]}

Shpotyuk, O. ^{[3
]}

Vakiv, M. ^{[3
]}

机构：

[1] Jan Dlugosz Univ, Inst Phys, 13-15 Al Armii Krajowej, PL-42201 Czestochowa, Poland

[2] Opole Univ Technol, Opole, Poland

[3] SRC Carat, Inst Materials, UA-79031 Lvov, Ukraine

[4] Lviv Polytechn Natl Univ, Lvov, Ukraine

来源：

XIII INTERNATIONAL SEMINAR ON PHYSICS AND CHEMISTRY OF SOLIDS | 2007年 / 79卷

关键词：

D O I：

10.1088/1742-6596/79/1/012015

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The water-sensitive positron trapping modes in nanoporous MgAl2O4 ceramics with a spinel structure are studied. It is shown that water-sorption processes in magnesium aluminate ceramics leads to corresponding increase in positron trapping rates of extended defects located near intergranual boundaries. This catalytic affect has reversible nature, being strongly dependent on sorption water fluxes in ceramics. The fixation of all water-dependent positron trapping inputs allow to refine the most significant changes in positron trapping rate of extended defects.

引用

页数：4

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