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Irradiation damage 'displacement zone'; Dommages sous irradiation zone de deplacements

Abstract

It is well known that a charged particle (ion, primary atom, etc...) moving in a solid slows down and can cause a cascade of displacements of the atoms in the solid. A study is made here of the extent to which the cascade is made up, or not, of independent collisions, as a function of the energy of the initial charged particle. When the distance between the collisions is small, these latter are no longer independent; the cascade, which then has to be considered as a whole, perturbs and locates, in the irradiated solid , a zone which has been named a 'displacement zone'. It is shown that the proportion of displacement zones increases with increasing atom size (high atomic number Z), with decreasing atomic distance D in the substance considered and with decreasing energy of the ion undergoing the slowing down process (although always remaining above a few hundred eV). The proportions obtained are higher than those corresponding to the calculations of J. A. Brinkman [3]. An interatomic potential required for this work has also been determined. (author) [French] On sait qu'une particule chargee (ions, atomes primaires, etc...) en mouvement dans un solide se ralentit, avec eventuellement deplacement en  More>>
Authors:
Genthon, J P [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1969
Product Type:
Technical Report
Report Number:
CEA-R-3712
Resource Relation:
Other Information: PBD: 1969
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOM-ATOM COLLISIONS; ATOMIC DISPLACEMENTS; CHARGED PARTICLES; ION-ATOM COLLISIONS; IRRADIATION; SOLIDS
OSTI ID:
20547211
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR04R3712002818
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[137] pages
Announcement Date:
Feb 01, 2005

Citation Formats

Genthon, J P. Irradiation damage 'displacement zone'; Dommages sous irradiation zone de deplacements. France: N. p., 1969. Web.
Genthon, J P. Irradiation damage 'displacement zone'; Dommages sous irradiation zone de deplacements. France.
Genthon, J P. 1969. "Irradiation damage 'displacement zone'; Dommages sous irradiation zone de deplacements." France.
@misc{etde_20547211,
title = {Irradiation damage 'displacement zone'; Dommages sous irradiation zone de deplacements}
author = {Genthon, J P}
abstractNote = {It is well known that a charged particle (ion, primary atom, etc...) moving in a solid slows down and can cause a cascade of displacements of the atoms in the solid. A study is made here of the extent to which the cascade is made up, or not, of independent collisions, as a function of the energy of the initial charged particle. When the distance between the collisions is small, these latter are no longer independent; the cascade, which then has to be considered as a whole, perturbs and locates, in the irradiated solid , a zone which has been named a 'displacement zone'. It is shown that the proportion of displacement zones increases with increasing atom size (high atomic number Z), with decreasing atomic distance D in the substance considered and with decreasing energy of the ion undergoing the slowing down process (although always remaining above a few hundred eV). The proportions obtained are higher than those corresponding to the calculations of J. A. Brinkman [3]. An interatomic potential required for this work has also been determined. (author) [French] On sait qu'une particule chargee (ions, atomes primaires, etc...) en mouvement dans un solide se ralentit, avec eventuellement deplacement en cascade d'atomes du solide. On etudie ici dans quelle proportion, en fonction de l'energie de la particule chargee initiale, la cascade est constituee, ou non, de 'chocs independants'. Lorsque la distance entre chocs est petite, ceux-ci ne sont plus independants; la cascade, qui doit alors etre consideree dans son ensemble, perturbe et definit dans le solide irradie, une zone qu'on a appele zone de deplacements. On montre que la proportion de zones de deplacements est d'autant plus grande que les atomes sont gros (nombre atomique Z grand), que la distance interatomique D est petite dans le corps considere, et que l'energie de l'ion en ralentissement est petite (tout en restant superieure a quelques centaines d'eV). Les proportions obtenues sont superieures a celles qui correspondraient aux calculs de J. A. BRINKMAN [3], On determine d'autre part un potentiel interatomique, necessaire a cette etude. (auteur)}
place = {France}
year = {1969}
month = {Jul}
}