Optimization of periodic temperature variation of a lithium tantalate single crystal in a pyroelectric accelerator for stable X-ray generation
Oleinik A. N. 1, Gilts M. E. 1, Zhukova P. N. 2, Sotnikova V. S. 1,3, Shablov Yu. S. 1, Shapovalov P. G. 1,4
1Laboratory of Radiation Physics, Belgorod State National Research University, Belgorod, Russia
2Saint-Petersburg University of State Fire Service of Emercom of Russia, Saint-Petersburg, Russia
3Belgorod State Technology University named after V.G. Shukhov, Belgorod, Russia
4National Research Nuclear University “MEPhI”, Moscow, Russia
Email: oleynik_a@bsu.edu.ru
Analysis of the X-ray spectra and curves of periodic temperature variation of a lithium tantalate single crystal shows that the shift in temperature oscillations is a negative factor that leads to unstable operation of the pyroelectric accelerator. However, there is a range of permissible displacements at which the generation of particles remains stable. Thus, it is necessary to monitor the implementation of the law of temperature change for the effective operation of the pyroelectric accelerator. The influence of the residual gas pressure and the amplitude of temperature oscillations on the discussed effect is also analyzed. Keywords: pyroelectric effect, X-ray generators, pyroelectric accelerator, lithium tantalate.
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