ROLES OF ENERGETIC DISPLACEMENT CASCADES IN ION BEAM MODIFICATIONS OF MATERIALS.

R. S. Averback, S. J. Kim, T. Diaz de la Rubia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The roles of energetic displacement cascades are ubiquitous in the fields of radiation damage and ion beam modifications of materials. These roles can be described on two time scales. For the first, which lasts approximately 10** minus **1**1 s, small cascade volumes are characterized by large supersaturations of point defects, structural disorder, and energy densities in excess of some tenths of eV's per atom. During this period, the system can be driven far from equilibrium with significant rearrangement of target atoms and the production of Frenkel pairs. Experimental studies of ion beam mixing in conjunction with molecular dynamics computer simulations, have contributed largely toward understanding these dynamic cascade processes. It will be shown how the primary state of damage in cascades influences this microstructural development. Examples involving radiation-enhanced diffusion and ion-induced amorphization will be discussed.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsMichael O. Thompson, S.Thomas Picraux, James S. Williams
PublisherMaterials Research Soc
Pages399-410
Number of pages12
ISBN (Print)0931837405
StatePublished - Dec 1 1987
Externally publishedYes
EventBeam-Solid Interact and Transient Processes - Boston, MA, USA
Duration: Dec 1 1986Dec 4 1986

Publication series

NameMaterials Research Society Symposia Proceedings
Volume74
ISSN (Print)0272-9172

Other

OtherBeam-Solid Interact and Transient Processes
CityBoston, MA, USA
Period12/1/8612/4/86

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'ROLES OF ENERGETIC DISPLACEMENT CASCADES IN ION BEAM MODIFICATIONS OF MATERIALS.'. Together they form a unique fingerprint.

Cite this