Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Recoil ranges in ion-induced collision cascades
Autore:
Colla, TJ; Gades, H; Urbassek, HM; Averback, RS;
Indirizzi:
Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany Univ Kaiserslautern Kaiserslautern Germany D-67663 iserslautern, Germany Univ Illinois, Mat Res Lab, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 nois, Mat Res Lab, Urbana, IL 61801 USA
Titolo Testata:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
fascicolo: 1-4, volume: 153, anno: 1999,
pagine: 361 - 368
SICI:
0168-583X(199906)153:1-4<361:RRIICC>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-DYNAMICS SIMULATION; DISPLACEMENT CASCADES; COMPUTER-SIMULATION; DEPTH PROFILES; ENERGY; CU; DISTORTION; SURFACE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Urbassek, HM Univrslautern,utern, Fachbereich Phys, Erwin Schrodinger Str,D-67663 Kaise Univ Kaiserslautern Erwin Schrodinger Str Kaiserslautern Germany D-67663
Citazione:
T.J. Colla et al., "Recoil ranges in ion-induced collision cascades", NUCL INST B, 153(1-4), 1999, pp. 361-368

Abstract

Using molecular-dynamics simulation, we study the recoil atom ranges in collision cascades as a function of the recoil energy. We focus on cascades initiated by 1 keV ions in Cu and Cu-related model metals, in which the cohesive energy has been changed with respect to that of Cu. At high energies, E > 100 eV, the recoil range follows the prediction of linear cascade theory. At lower energies, the ranges are still considerable. In particular, we observe a 15% probability of atom relocation at the nominal displacement threshold: the relocation probability does not vanish even for 1 eV recoils. We attribute this feature to the moderate collision spike existing in the system. The cohesive energy of the material affects the ranges considerably;a decrease of the cohesive energy increases low-energy recoil ranges. On the other hand, the recoil density is only moderately influenced by the cohesive energy. We hence conclude that the strong mixing observed in ion-bombarded materials with small cohesive energy is due to the increased recoil ranges. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 19:19:53