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Experimental irradiation of polyethylene composites with neutrons and γ-quanta
Russian version
Cherkashina N.I.1, Pavlenko V.I.1, Romanyuk D. S.1, Sidelnikov R. V.1, Rudnev P. I.2, Cheshigin I. V.2
1Belgorod State Technology University named after V.G. Shukhov, Belgorod, Russia
2ADC Center, Moscow, Russia
Email: romanyuk.dmitrij.98@bk.ru
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The article presents the results of a study of polymer composite materials based on high-pressure polyethylene CnH2n+2, boron carbide B4C and titanium hydride TiH2 for protection against the effects of neutrons and γ-quanta. The article presents a technology for manufacturing materials with the following composition: CnH2n+2 - 40 % wt., B4C - 5 % wt., TiH2 - 55 % wt. (PCM-TiH2-B4C) and CnH2n+2 - 95 % wt., B4C - 5 % wt. (PCM-B4C). The flexural strength of PCM-TiH2-B4C is 12.5 MPa, and that of PCM-B4C - 4.8 MPa. The structure of the materials is considered and described using electron microscopy, and flaw detection is carried out to assess the quality of the resulting composites and remove defective samples. The interaction of ionizing radiation with materials was simulated using the XCOM 3.1 program. The neutron flux attenuation coefficient was determined experimentally: at an energy of 2 MeV for PCM-B4C it has a value of 73.3 cm-1, and for mboxPCM-B4C-TiH2 its value is - 128.5 cm-1. The γ-quanta flux attenuation coefficient, established experimentally, was estimated: at an energy of 2.5 MeV for PCM-B4C this coefficient has a value of 10.3 cm-1, and for PCM-B4C-TiH2 - 19.22 cm-1. Keywords: polyethylene, titanium hydride (TiH2), composite protective material, attenuation coefficient.
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