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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/206556
Title: Модификация свойств ионно-имплантированных слоев полиэтилена последующей диффузией
Other Titles: Properties modofication of ion-mplanted polymer layers by following diffusion / V.B.Odzhaev, O.N.Jankovskij, E.I.Kozlova, I.P.Kozlov
Authors: Оджаев, В. Б.
Янковский, О. Н.
Козлова, Е. И.
Козлов, И. П.
Keywords: ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика
Issue Date: 1999
Publisher: Минск : БГУ
Citation: Взаимодействие излучений с твердым телом: Материалы III междунар. науч. конф., 6-8 окт. 1999 г., Минск: В 2 ч. Ч.2. — Мн.: БГУ, 1999. — С. 78-80.
Abstract: Исследованы электрофизические и парамагнитные характеристики слоев полиэтилена, модифицированных ионной имплантацией и последующей диффузией. Показано, что процессы диффузии ионов железа и хлора близки к законам Фика, слабо зависят от условий предварительной имплантации и ионы не вступают в химическое взаимодействие с радиационно-поврежденной матрицей полимера. Установлено, что диффузия приводит к увеличению проводимости, прежде всего, в приповерхностном слое, но слабо влияет на электропроводность скрытого карбонизированного слоя.
Abstract (in another language): The present study was undertaken to detail the effects of the polyethylene (PE) properties modification by the ion implantation and the following diffusion. The thin PE films were implanted with B*, N* and Ar* ions with the energy of 100-150 keV to the fluences 1x1013- Ix l017 cm'2. The following diffusion was conducted from the FeCI3 solutions in water at room temperature within 24 hours. The results of the present study were compared to the results of the previously conducted investigations of iodine diffusion to PE implanted with F* and As* ions. The ESR research were conducted by the standard technique at X-band using Varian E112 spectrometer. The standard two-point technique was used to determine the changes of the electric parameters of the samples in study. The analysis of the ESR spectra of the studied PE films made it possible to associate the registered paramagnetic centers (PC) with the 7t-electrons being delocalised at pz-orbitals of the carbon atoms that make up the radiative clusters-«drops» being formed in the film as the result of the implantation. The experimental data shows that the processes taking place in the PE films during the following diffusion are more intensive in the case of B* implantation. It was found that the FeCI3 diffusion has a very slight influence over the ESR spectra of the modified films parameters and the PC concentration. This fact says for the supposition that the chlorine and iron ions do not actually chemically interact with the free radicals of the radiatively induced clusters. It was found that the distribution profiles of the diffused chlorine and iron ions over the samples depth undergoes the Fick law with diffusion coefficient ~1015 cm2/second which also supports the absence of active chemical interaction of the admixtures with the radiatively-damaged matrix of the polymer. The electrical studies pointed out a sufficient influence of the diffusion over the electro-physical parameters of the previously implanted polymer. The changes of there parameters do not depend upon the concentration of the admixture in the solution, but does depend upon the implantation dose of the polymers films. It was found that this influence concerns mostly the upper layers of the modified polymers and on the opposite, does not cover the radiatively damaged buried layer.
URI: http://elib.bsu.by/handle/123456789/206556
ISBN: 985-445-237-9
Appears in Collections:1999. Взаимодействие излучений с твердым телом

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