Optimal speed of temperature change of a crystal in a pyroelectric X-ray radiation source

Kubankin, A. S.; Chepurnov, A.; Ivashchuk, O. O.; Ionidi, V. Y.; Kishin, I. A.; Klenin, A. A.; Oleinik, A.; Shchagin, A. V.

doi:10.1063/1.5006486

Cited by 11 publications

(12 citation statements)

References 13 publications

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“…It was logical that leakage currents caused the charge losses from the crystal polar surface and, consequently, lowered the efficiency of pyroelectric X-ray generators. At the temperature change rate of about 8 deg C per min, the X-ray emission was maximum for a cylindrical sample of lithium tantalum [15]. As was shown above, at that rate of the temperature change and in conditions close to the experimental [15] (but for another sample shape), the surface current pulses were the lowest.…”

Section: Lateral Surface Effect On X-ray Generationsupporting

confidence: 54%

“…At the temperature change rate of about 8 deg C per min, the X-ray emission was maximum for a cylindrical sample of lithium tantalum [15]. As was shown above, at that rate of the temperature change and in conditions close to the experimental [15] (but for another sample shape), the surface current pulses were the lowest. This fact inspired us to explore how the electrostatic charge on the crystal surfaces affected the X-ray generation during the pyroelectric effect.…”

Section: Lateral Surface Effect On X-ray Generationsupporting

confidence: 54%

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Lateral Surface Electrization of Z-Cut Lithium Niobate During Pyroelectric Effect

et al. 2020

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The paper focuses on the surfaces electrization of Z-cut single-crystal lithium niobate during the pyroelectric effect. It is shown that the properties of the electric current passing through the surfaces of single-crystal lithium niobate depend on the ground circuit, the rate of temperature change, and orientation of polar axes. Experiments show that grounding of lithium niobate surfaces has an effect on the X-ray radiation during the pyroelectric effect.

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Section: Lateral Surface Effect On X-ray Generationsupporting

confidence: 54%

Section: Lateral Surface Effect On X-ray Generationsupporting

confidence: 54%

Lateral Surface Electrization of Z-Cut Lithium Niobate During Pyroelectric Effect

et al. 2020

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“…In pyroelectric accelerators, pyroelectric crystals like LiNbO 3 and LiTaO 3 are often applied (see, e.g. 2 – 4 , 11 , 12 ). Their ε pyro are equal to 31 and 44, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…In a piezoelectric accelerator, the full charge can produced for a few seconds at the compression. In typical pyroelectric accelerator, the full charge can produced for about 10 minutes at heating of a pyroelectric for about 100°K 11 . Thus, the velocity of the charge production in piezoelectric accelerator can exceed one in a pyroelectric accelerator for about two orders of magnitude.…”

Section: Resultsmentioning

confidence: 99%

Piezoelectric Accelerator

Ivashchuk¹,

Shchagin²,

Kubankin³

et al. 2018

Sci Rep

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Here we propose the conception of small-size piezoelectric accelerator of charged particles that operates due to the piezoelectric effect at varying mechanical force applied to piezoelectrics in vacuum. The accelerating voltage and the energy of accelerated particles are estimated. In the proof-of-principle experiment we demonstrate the effect of the emission of X-ray radiation at the mechanical compression of piezoelectric ceramics in vacuum. The compression leads to the appearance of charges and potentials on the surfaces of the piezoelectrics and also to the arising of the electric field in vacuum. Electrons are accelerated in the electric field, strike the matter and produce the X-ray radiation. In the experiment, we have observed emission of the characteristic and bremsstrahlung X-ray radiation of energy up to 60 keV due to the compression of piezoelectric ceramics in vacuum. This means that electrons are accelerated in the piezoelectric accelerator up to the energy at least of 60 keV. The agreement of calculated and experimental data confirms the conception. Advantages of the piezoelectric accelerator and possibilities of its development and applications are discussed.

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“…Different methods of heating and cooling of a pyroelectric element in vacuum are used. For instance, it is heated by a resistor [4 -6], evanescent lamp [7], Peltier element [8,9], inductive heater [10], ultraviolet laser [11]. Passive cooling up to room temperature is possible due to thermal radiation [12].…”

Section: Introductionmentioning

confidence: 99%

Semiconductor Driver of Pyroelectric Accelerator of Charged Particles

Ivashchuk¹,

Shchagin²,

Kubankin³

et al. 2019

Problems of Atomic Science and Technology

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The possibility for application of semiconductor element for heating of pyroelectric crystalin a pyroelectric accelerator of charged particles or pyroelectric X-ray generator is at first proposed and demonstrated experimentally. Spectra of X-ray radiation measured at the heating of the pyroelectric crystal LiNbO3 by silicon diode at different pressures of residual gas are presented. Perspectives for application of semiconductor heater in the pyroelectric accelerators and X-ray generators are discussed.

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Optimal speed of temperature change of a crystal in a pyroelectric X-ray radiation source

Cited by 11 publications

References 13 publications

Lateral Surface Electrization of Z-Cut Lithium Niobate During Pyroelectric Effect

Lateral Surface Electrization of Z-Cut Lithium Niobate During Pyroelectric Effect

Piezoelectric Accelerator

Semiconductor Driver of Pyroelectric Accelerator of Charged Particles

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