On the physical nature of the threshold displacement energy in radiation physics

Abstract

A formula for numerical estimation of the threshold energy E_d of atomic displacement from lattice sites upon the irradiation of solids is proposed for the first time. The E_d structure is determined by analyzing processes accompanying the subthreshold motion of a lattice atom ejected from a site (when the energy W acquired by the atom does not exceed E_d). The relation between E_d and the physical properties of solids and the parameters of their crystal lattice is shown. It is established that the partial contribution of the binding energy to E_d does not exceed 30%, and the dissipative energy losses (intracrystalline friction) during such atomic motion is about 10%. The main part of E_d is determined by the work of the forces of electrostatic (in the case of semiconductors and insulators) and elastic (for metals) interaction between vacancies and interstitial atoms.

Original language	English
Pages (from-to)	1206-1212
Number of pages	7
Journal	Journal of Surface Investigation
Volume	9
Issue number	6
DOIs	https://doi.org/10.1134/S102745101506021X
Publication status	Published - 1 Nov 2015

Keywords

intracrystalline friction
radiation defect
radiation resistance of materials
stable and unstable vacancy–interstitial-atom pair
threshold displacement energy

ASJC Scopus subject areas

Surfaces, Coatings and Films

Access to Document

10.1134/S102745101506021X

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title = "On the physical nature of the threshold displacement energy in radiation physics",

abstract = "A formula for numerical estimation of the threshold energy Ed of atomic displacement from lattice sites upon the irradiation of solids is proposed for the first time. The Ed structure is determined by analyzing processes accompanying the subthreshold motion of a lattice atom ejected from a site (when the energy W acquired by the atom does not exceed Ed). The relation between Ed and the physical properties of solids and the parameters of their crystal lattice is shown. It is established that the partial contribution of the binding energy to Ed does not exceed 30%, and the dissipative energy losses (intracrystalline friction) during such atomic motion is about 10%. The main part of Ed is determined by the work of the forces of electrostatic (in the case of semiconductors and insulators) and elastic (for metals) interaction between vacancies and interstitial atoms.",

keywords = "intracrystalline friction, radiation defect, radiation resistance of materials, stable and unstable vacancy–interstitial-atom pair, threshold displacement energy",

author = "Uglov, {V. V.} and Kvasov, {N. T.} and Remnev, {G. E.} and Polikarpov, {R. V.}",

year = "2015",

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doi = "10.1134/S102745101506021X",

language = "English",

volume = "9",

pages = "1206--1212",

journal = "Journal of Surface Investigation",

issn = "1027-4510",

publisher = "Maik Nauka-Interperiodica Publishing",

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TY - JOUR

T1 - On the physical nature of the threshold displacement energy in radiation physics

AU - Uglov, V. V.

AU - Kvasov, N. T.

AU - Remnev, G. E.

AU - Polikarpov, R. V.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - A formula for numerical estimation of the threshold energy Ed of atomic displacement from lattice sites upon the irradiation of solids is proposed for the first time. The Ed structure is determined by analyzing processes accompanying the subthreshold motion of a lattice atom ejected from a site (when the energy W acquired by the atom does not exceed Ed). The relation between Ed and the physical properties of solids and the parameters of their crystal lattice is shown. It is established that the partial contribution of the binding energy to Ed does not exceed 30%, and the dissipative energy losses (intracrystalline friction) during such atomic motion is about 10%. The main part of Ed is determined by the work of the forces of electrostatic (in the case of semiconductors and insulators) and elastic (for metals) interaction between vacancies and interstitial atoms.

AB - A formula for numerical estimation of the threshold energy Ed of atomic displacement from lattice sites upon the irradiation of solids is proposed for the first time. The Ed structure is determined by analyzing processes accompanying the subthreshold motion of a lattice atom ejected from a site (when the energy W acquired by the atom does not exceed Ed). The relation between Ed and the physical properties of solids and the parameters of their crystal lattice is shown. It is established that the partial contribution of the binding energy to Ed does not exceed 30%, and the dissipative energy losses (intracrystalline friction) during such atomic motion is about 10%. The main part of Ed is determined by the work of the forces of electrostatic (in the case of semiconductors and insulators) and elastic (for metals) interaction between vacancies and interstitial atoms.

KW - intracrystalline friction

KW - radiation defect

KW - radiation resistance of materials

KW - stable and unstable vacancy–interstitial-atom pair

KW - threshold displacement energy

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