Effects of cascade energy density on radiation induced segregation and ion beam mixing

R. S. Averback, L. E. Rehn, P. R. Okamoto, R. E. Cook

Research output: Contribution to journalArticle

Abstract

The effects of cascade energy density on two ion-beam induced phenomena, radiation-induced-segregation (RIS) in near-surface regions and ion-beam mixing of thin surface layers, were investigated. RIS of Si to external surfaces of Ni-12.7 at.% Si alloys was measured for 2.57 MeV Kr and 1.5 MeV He bombardments. The Kr irradiation produces defects mostly in energetically dense displacement cascades, whereas the He irradiation produces most of the defects in low energy recoils. Thin Pt and Ni layers deposited on 〈111〉 oriented Si surfaces were ion-beam mixed using 80 keV Ne and 280 keV Kr irradiations. Dense cascades were found to inhibit RIS, but to enhance ion-beam mixing.

Original languageEnglish (US)
Pages (from-to)79-84
Number of pages6
JournalNuclear Instruments and Methods
Volume182-183
Issue numberPART 1
DOIs
StatePublished - Jan 1 1981
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)

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