Spontaneous emission from the C3 radical in carbon plasma

László Nemes, Anna M. Keszler, Christian G. Parigger, James O. Hornkohl, Hope A. Michelsen, Vadim Stakhursky

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Abstract

Spontaneous emission measurements are discussed for the Swings transitions of the C3 radical in laser-generated graphite plasma, and the spectroscopy of the C3 radical in carbon vapor and plasma is summarized. A review is given of some theoretical calculations and emission spectroscopic investigations are presented. Time-averaged, laser-induced optical breakdown spectra are reported from Nd:YAG laser generated graphite microplasma. In 200-300 Torr of argon and helium, and depending on the specific experimental configuration, a weak emission continuum is observed centered at 400 nm when using a laser fluence of typically 1 J/cm2. Such continua were not detected in our previous experiments using focused laser radiation. The possibilities for the origin of this continuum are considered.

Original languageEnglish
Pages (from-to)4032-4040
Number of pages9
JournalApplied Optics
Volume46
Issue number19
DOIs
Publication statusPublished - Jul 1 2007

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

Cite this

Nemes, L., Keszler, A. M., Parigger, C. G., Hornkohl, J. O., Michelsen, H. A., & Stakhursky, V. (2007). Spontaneous emission from the C3 radical in carbon plasma. Applied Optics, 46(19), 4032-4040. https://doi.org/10.1364/AO.46.004032