Volume 142, Number 3, May 2023
|Number of page(s)
|Nuclear and plasma physics, particles and fields
|25 April 2023
I-V curve of the electron flow generated during a pyroelectric effect in lithium tantalate single crystal in vacuum conditions
1 Laboratory of Radiation Physics - Belgorod, Russia
2 John Adams Institute at Royal Holloway, University of London - Egham, TW20 0EX, UK
3 Lebedev Physical Institute - Moscow, Russia
4 National Research Nuclear University “MEPhI” - Moscow, Russia
(a) E-mail: firstname.lastname@example.org (corresponding author)
Received: 20 February 2023
Accepted: 13 April 2023
Realization of a pyroelectric effect in vacuum provides the possibility to develop a compact and relatively inexpensive electron source. In this paper we observe and analyze the I-V curve of electron flow generated during the pyroelectric effect in a lithium tantalate single crystal. The region of the monoenergetic electron flow with a slow change in the peak energy is determined. This phenomenon is accompanied by a current avalanche process. The analysis of the electron spectra and the I-V curve shows that the observed avalanche process and the stabilization of the peak energy occurs due to a sharp increase of secondary electrons in the total electron flow.
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