Magnetic Radio Modifier Based on the Fe₃O₄/Ta₂O₅ Nanoparticles

Abstract:

The possibility of application of magnetic core-shell Fe₃O₄/Ta₂O₅ nanoparticles has been investigated in order to enhance the effect of radiation therapy. It has been shown, that an increase of the concentration of the core-shell nanoparticles due to the influence of the nonuniform magnetic field enhances the absorption of gamma quanta with energy destroying tumor cells (20-200 keV). In addition, an increase of nanoparticles concentration promotes the formation of electron-positron pairs, annihilation of which are leads to an increase in the number of secondary gamma quanta with an energy of 511 keV.

• Periodical: Defect and Diffusion Forum (Volume 386)
• Pages: 156-160
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.386.156
• Online since: September 2018
• Authors: Ksenya Sergeevna Lukуanenko*, Vladimir Iosifovich Apanasevich, Leonid Lazarevich Afremov, Olga Vycheslavovna Tarakova, Olga Sergeevna Plotnikova, Alexey Yurievich Samardak, Vladimir Nikolaevich Kustov, Pavel Aleksandrovich Lukyanov
• Keywords: Fe₃O₄/Ta₂O₅ Nanoparticles, Radiation Therapy, Radiomodification, Tumor

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