Laser induced fluorescence measurement of plasma plume during pulsed laser deposition of diamond-like carbon

Yukihiko Yamagata, Yuji Kozai, Fumiaki Mitsugi, Tomoaki Ikegami, Kenji Ebihara, Ajay Sharma, Robert M. Mayo, Jagdish Narayan

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1 Citation (Scopus)

Abstract

Dynamics of carbon ablation plasma plume during the preparation of diamond-like carbon films by KrF excimer pulsed laser deposition was investigated using laser induced fluorescence (LIF) and optical emission spectroscopy. LIF signal from C2 molecule (Swan band, d 3g - a 3u) was detected using a photomultiplier tube and an intensified CCD camera. Temporal evolution and spatial distribution of C2 molecules in the ablated plume were measured as a function of laser energy density and ablation area. LIF intensity is found to be weaker in the central part of the plume than that at the periphery at incident energy greater than 6 J/cm2. It is conjectured that some of C2 molecules are dissociated by collision with energetic species in central part of the ablation plume. Dynamics of ablation plasma plume is strongly dependent on the size of ablated area.

Original languageEnglish
Pages (from-to)J341-J346
JournalMaterials Research Society Symposium - Proceedings
Volume617
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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