Наноструктурные дефекты на поверхности и в объеме в кристаллах LiF-O при воздействии радиации

A. Dauletbekova; A. Akilbekov; A. Abdrakhmetova; A. Russakova; M. Baizhumanov; Z. Umatova

Authors

A. Dauletbekova L.N. Gumilev Eurasian National University, Astana, Kazakhstan
A. Akilbekov L.N. Gumilev Eurasian National University, Astana, Kazakhstan
A. Abdrakhmetova L.N. Gumilev Eurasian National University, Astana, Kazakhstan
A. Russakova L.N. Gumilev Eurasian National University, Astana Branch of INP NNC RK, Astana, Kazakhstan
M. Baizhumanov L.N. Gumilev Eurasian National University, Astana, Kazakhstan
Z. Umatova L.N. Gumilev Eurasian National University, Astana, Kazakhstan

Keywords:

crystals LiF, сolor centers, dislocation, ion irradiation, pulsed electron irradiation, mamocrystalities

Abstract

Evolution of structure defects were investigated in LiF -O crystals irradiated at room temperature with 117 МеV ⁸⁴Kr ions with a beam current of 10nA/cm² in the fluence range 10¹¹ - 10¹⁴ cm² at the cyclotron accelerator DC-60 (Astana, Kazakhstan) and electron beam (0,2 Mev energy of electrons, the pulse duration 10ns). At the fluence of 10¹¹ cm², SEM imaging revealed mainly formation of etchable ion tracks. Above this fluence, severe structural modifications in the irradiated layer were observed which include the ion-induced formation of dislocations and grains with nano-scale dimensions. Nanostructures were not observe at electron irradiation.