Halyatkin O. Interaction of ionizing radiation with the polymer-based composites and micro-and nano embedded

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0417U003328

Thesis Registration Form

0417U003328.pdf

Applicant for

Specialization

  • 01.04.10 - Фізика напівпровідників і діелектриків

07-06-2017

Specialized Academic Board

Д 35.051.09

Ivan Franko National University of Lviv

Essay

The thesis is devoted to revealing regularities of luminescence for composite system polymer matrix / inorganic core under ionizing radiation. The ratio between the size of nanoparticles (BaF2, SrF2 and LaPO4-Pr) embedded in polystyrene matrix and mean free path length and photoelectron thermalization length are found to be crucial for understanding the processes of energy transfer in polymer composites. Non-radiative excitation energy transfer from small BaF2, SrF2 and LaPO4-Pr nanoparticles (~ 20 nm) to polystyrene by photoelectric effect is established to be more efficient than that for larger nano- and microparticles, where radiative energy transfer is dominant.

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Files

aref.doc

dis.doc

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