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Zhurnal Tekhnicheskoi Fiziki, 2020 Volume 90, Issue 11, Pages 1806–1816 (Mi jtf5144)

This article is cited in 4 papers

XXIV International Symposium Nanophysics and Nanoelectronics, Nizhny Novgorod, March 10--13, 2020
Atomic and molecular physics

Prospects for the use of X-ray tubes with a field-emission cathode and a through-type anode in the range of soft X-ray radiation

M. M. Baryshevaab, S. Yu. Zueva, A. Ya. Lopatina, V. I. Luchina, A. E. Pestova, N. N. Salashchenkoa, N. N. Tsybina, N. I. Chkhaloa

a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
b Lobachevsky State University of Nizhny Novgorod

Abstract: The use of field emission cathodes in X-ray tubes requires the placement of the cathode assembly with a small gap from the anode, and this hampers the output of radiation. The greatest difficulties arise in the generation of a relatively soft spectrum with wavelengths of 1–10 nm: in this case, the accelerating voltage does not exceed several kilovolts and the interelectrode gap does not exceed several hundred microns. In this work, the possibility of using submicron films based on beryllium as through-type anodes for emitting the Be$K_{\alpha}$ line ($\lambda$ = 11.4 nm) and the accompanying bremsstrahlung spectrum is experimentally demonstrated. In particular, the characteristic radiation of a tube with a field emission blade-type cathode and a Be-film anode, introduced into a grazing incidence grating spectrometer, was detected. The characteristics of beryllium films necessary for designing high-power X-ray tubes of this type are determined.

Keywords: field emission, X-ray tube, thin-film target.

Received: 28.04.2020
Revised: 28.04.2020
Accepted: 28.04.2020

DOI: 10.21883/JTF.2020.11.49966.150-20


 English version:
Technical Physics, 2020, 65:11, 1726–1735

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