Перегляд за автором "Shchagin, A.V."

Сортувати за: Порядок: Результатів:

  • Application of threshold detectors for increasing of the contrast in X-ray images 
    Sotnikov, V.V.; Voronko, V.A.; Shchagin, A.V.; Sanin, V.M. (Вопросы атомной науки и техники, 2005)
    Efficiency in the use of detectors with threshold energy discrimination of radiation (“threshold detectors”) for improvement of contrast in X-ray images in quasimonochromatic X-rays is considered. The threshold detectors ...
  • Areas of applicability of kinematic and dynamic theories of parametric X-ray radiation 
    Shchagin, A.V. (Вопросы атомной науки и техники, 2015)
    The areas of applicability of kinematic and dynamic theories of parametric X-ray radiation (PXR) of relativistic particles in a crystal are considered. It is shown that dynamic diffraction of the PXR is possible in ...
  • Calibration of X-ray space telescopes 
    Shchagin, A.V.; Sanin, V.M.; Sotnikov, V.V.; Voronko, V.A. (Вопросы атомной науки и техники, 2004)
    In this work the new concept of a source of X-ray beam for ground calibration of next-generation telescopes is proposed. This facility contains a source of a parametric X-ray radiation (PXR). The source would provide ...
  • Diffraction on a polycrystal for investigations and diagnostics of X-ray radiation of relativistic particles in a forward direction 
    Shchagin, A.V. (Вопросы атомной науки и техники, 2004)
    It is shown that the diffraction on a polycrystal can be used for investigation and diagnostics of X-ray radiation emitted in a forward direction by relativistic charged particles moving in crystalline or other targets ...
  • Frequency of parametric X-ray radiation 
    Shchagin, A.V.; Kube, G. (Problems of Atomic Science and Technology, 2023)
    The exact solution of the equation for the frequency of parametric X-ray radiation (PXR) of relativistic charged particles moving in a crystal is obtained and compared to the approximate solution. It is found that the exact ...
  • Ion generation by tungsten filament for pyroelectric pulsed accelerator 
    Ivashchuk, O.O.; Shchagin, A.V.; Kubankin, A.S.; Bolotov, E.V.; Miroshnik, V.S.; Volkov, V.I.; Grigoriev, Yu.V. (Вопросы атомной науки и техники, 2021)
    The article is devoted to investigation of ion generation by tungsten filament in vacuum. Electron and ion currents from tungsten filament at different residual air gas pressures are measured and compared. Dependencies of ...
  • Location of heavy elements by monochromatic X-ray beam 
    Shchagin, A.V.; Sanin, V.M.; Sotnikov, V.V.; Voronko, V.A.; Yegorov, A.M. (Вопросы атомной науки и техники, 2004)
    The remote nondestructive detection of materials with heavy elements is an important task in number of applications, including needs for control of terrorist’s activity. In the report, we discuss a possibility to use ...
  • Observation of parametric X-ray radiation excited by 50 GeV protons and identification of background radiation origin 
    Afonin, A.G.; Britvich, G.I.; Chesnokov, Yu.A.; Chirkov, P.N.; Durum, A.A.; Kostin, M.Yu.; Lutchev, A.V; Maisheev, V.A.; Yanovich, A.A.; Shchagin, A.V.; Truten’, V.I.; Ganenko, V.B.; Kirillin, I.V.; Shul’ga, N.F.; Kubankin, A.S.; Nasonov, N.N.; Potylitsyn, A.P.; Gogolev, A.S.; Uglov, S.R.; Cherepennikov, Yu.M.; Karataev, P. (Вопросы атомной науки и техники, 2013)
    The experimental layout designed to study properties of focused parametric X-ray radiation generated by relativistic protons in a bent crystal and parametric X-ray radiation generated by relativistic ions and positrons at ...
  • Quartz accelerator of charged particles 
    Ivashchuk, O.O.; Shchagin, A.V.; Kubankin, A.S.; Nikulin, I.S.; Miroshnik, V.S.; Volkov, V.I.; Ionidi, V.Y.; Chepurnov, A.S.; Oleinik, A.N.; Lepeshko, D.A.; Zhukova, M.A. (Вопросы атомной науки и техники, 2020)
    Results of first experiments with piezoelectric accelerator built on quartz crystals as piezoelectric elements are presented. Accelerating voltage in such quartz accelerator is produced at compression in vacuum of quartz ...
  • Quasimonochromatic beam of parametric X-ray radiation for control of heavy elements 
    Shchagin, A.V.; Sanin, V.M.; Sotnikov, V.V.; Voronko, V.A.; Yegorov, A.M. (Вопросы атомной науки и техники, 2005)
    Possibility to use quasimonochromatic X-ray beam of parametric X-ray radiation (PXR) in the X-ray locator for control and location of heavy elements is considered. The locator should operate with a tunable quasimonochromatic ...
  • Semiconductor driver of pyroelectric accelerator of charged particles 
    Ivashchuk, O.O.; Shchagin, A.V.; Kubankin, A.S.; Ionidi, V.Yu; Chepurnov, A.S. (Вопросы атомной науки и техники, 2019)
    The possibility for application of semiconductor element for heating of pyroelectric crystalin a pyroelectric ac- celerator of charged particles or pyroelectric X-ray generator is at first proposed and demonstrated ...