On the nature of emissions of polymethyl methacrylate excited by an electron beam of subnanosecond or nanosecond duration


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Аннотация

The results of studies of the physical nature of emissions produced in polymethyl methacrylate excited by electron beams of a subnanosecond or a nanosecond duration are presented. The spatial, amplitude, and spectral-kinetic properties of emissions have been examined under an electron beam energy density varying from 10–4 to 4 × 10–1 J/cm2. It has been found that cathodoluminescence is the primary type of emission under low energy densities of the electron beam. When the energy density of a nanosecond electron beam and/or the number of pulses of excitation by a subnanosecond electron beam were increased, an electrical breakdown of polymethyl methacrylate occurred in the irradiated region. This process was accompanied by a burst of emission of dense, low-temperature plasma.

Авторлар туралы

V. Oleshko

National Research Tomsk Polytechnic University

Email: VFT@loi.hcei.tsc.ru
Ресей, Tomsk, 634050

E. Baksht

Institute of High Current Electronics, Siberian Branch

Email: VFT@loi.hcei.tsc.ru
Ресей, Tomsk, 634055

A. Burachenko

Institute of High Current Electronics, Siberian Branch; National Research Tomsk State University

Email: VFT@loi.hcei.tsc.ru
Ресей, Tomsk, 634055; Tomsk, 634050

V. Tarasenko

National Research Tomsk Polytechnic University; Institute of High Current Electronics, Siberian Branch; National Research Tomsk State University

Хат алмасуға жауапты Автор.
Email: VFT@loi.hcei.tsc.ru
Ресей, Tomsk, 634050; Tomsk, 634055; Tomsk, 634050

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