Silicon clusters produced by femtosecond laser ablation: non-thermal emission and gas-phase condensation

Neutral silicon clusters Sin (up to n=7) and their cations Sin (up to n=10) have been produced by femtosecond laser ablation of bulk silicon in vacuum and investigated using time-of-flight mass spectrometry. Two populations of the Sin clusters with different velocity and abundance distributions in t...

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Published inApplied physics. A, Materials science & processing Vol. 79; no. 4-6; pp. 1591 - 1594
Main Authors Bulgakov, A.V., Ozerov, I., Marine, W.
Format Journal Article
LanguageEnglish
Published Springer Verlag 01.09.2004
Subjects
Atomic and Molecular Clusters
Chemical Physics
Clusters
Condensed Matter
Condensing
Explosions
Explosive forming
Femtosecond
Laser ablation
Materials Science
Physics
Plasma Physics
Plumes
Silicon
Silicon
femtosecond
clusters
ablation
time-of-flight
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Summary:Neutral silicon clusters Sin (up to n=7) and their cations Sin (up to n=10) have been produced by femtosecond laser ablation of bulk silicon in vacuum and investigated using time-of-flight mass spectrometry. Two populations of the Sin clusters with different velocity and abundance distributions in the ablation plume have been clearly distinguished. Possible mechanisms of cluster formation (Coulomb explosion, gas-phase condensation, phase explosion) are discussed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-004-2856-y