General expression for the width of a charged-particle track

Publikation: Bidrag til tidsskriftKonferenceartikelForskningpeer review

Abstrakt

Theoretical estimates of the dimensions of charged-particle tracks are conventionally based on Monte Carlo simulation of the trajectories of the primary as well as all secondary particles. The present note expresses the lateral width of a track by an integral over the primary cross-section and thus eliminates the need for simulating the primary trajectory. Expressions are given for the second-order and the fourth-order lateral average over the deposited-energy profile. These relations are applicable to tracks generated by either ionization or collision cascades. As an illustration, an analytical estimate is presented for the width of a collisional track generated by Au ions in Au which is of interest in current experimental work on sputtering by gold clusters.

OriginalsprogEngelsk
TidsskriftNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Vol/bind164
Sider (fra-til)401-407
Antal sider7
ISSN0168-583X
DOI
StatusUdgivet - apr. 2000
BegivenhedICACS-18: 18th International Conference on Atomic Collisions in Solids - Odense, Denmark
Varighed: 3. aug. 19998. aug. 1999

Konference

KonferenceICACS-18: 18th International Conference on Atomic Collisions in Solids
ByOdense, Denmark
Periode03/08/199908/08/1999
SponsorCarlsbergs mindelegat for Brygger J.C.Jacobson, CRAC, Danfysik A/S, Elsevier Science Publishers, et al.

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