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Abstract <p>The effect of exposure to pulsed megawatt submillimeter (0.1–0.4 THz) radiation fluxes on the spectral characteristics of some thin-film polymer materials in the frequency range from 0.2 to 2 THz has been registered. The polymer samples were characterized using technical solutions within the framework of time-domain spectroscopy and BWO spectroscopy. For the exposure, a radiation flux in the submillimeter wavelength range with a duration of about 4 μs, generated during beam–plasma interaction at the GOL–PET facility (Budker Institute of Nuclear Physics SB RAS), was used. Relative changes in the real part of the permittivity of individual polyvinylidene fluoride samples were found to reach a level of 0.5 with an initial value of about 3.0, while for polyvinyl chloride samples, no changes in this parameter were registered. At the same time, for individual polyurea samples, both significant and negligible changes in this parameter were observed as a result of the exposure. The results of the experiments provide a basis for using thin-film polymer materials as substrates for supramolecular complex samples, which during research will be exposed to powerful pulsed radiation fluxes in the submillimeter wavelength range.</p>

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Changes in the Spectral Characteristics of Some Polymeric Materials in the Frequency Range from 0.2 to 2 THz as a Result of Exposure to a Megawatt Flux of Submillimeter Radiation of Microsecond Duration

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • A. V. Arzhannikov,
  • S. L. Sinitsky,
  • D. A. Samtsov,
  • P. V. Kalinin,
  • S. A. Kuznetsov,
  • V. D. Stepanov,
  • S. S. Popov,
  • E. S. Sandalov,
  • M. G. Atlukhanov,
  • A. V. Stankevich,
  • A. V. Pestov,
  • N. A. Nikolaev,
  • A. A. Rybak

摘要

Abstract

The effect of exposure to pulsed megawatt submillimeter (0.1–0.4 THz) radiation fluxes on the spectral characteristics of some thin-film polymer materials in the frequency range from 0.2 to 2 THz has been registered. The polymer samples were characterized using technical solutions within the framework of time-domain spectroscopy and BWO spectroscopy. For the exposure, a radiation flux in the submillimeter wavelength range with a duration of about 4 μs, generated during beam–plasma interaction at the GOL–PET facility (Budker Institute of Nuclear Physics SB RAS), was used. Relative changes in the real part of the permittivity of individual polyvinylidene fluoride samples were found to reach a level of 0.5 with an initial value of about 3.0, while for polyvinyl chloride samples, no changes in this parameter were registered. At the same time, for individual polyurea samples, both significant and negligible changes in this parameter were observed as a result of the exposure. The results of the experiments provide a basis for using thin-film polymer materials as substrates for supramolecular complex samples, which during research will be exposed to powerful pulsed radiation fluxes in the submillimeter wavelength range.