title: Spontaneous emission from the C3 radical in carbon plasma.
abstract: Spontaneous emission measurements are discussed for the Swings transitions of the C(3) radical in laser-generated graphite plasma, and the spectroscopy of the C(3) 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/cm(2). Such continua were not detected in our previous experiments using focused laser radiation. The possibilities for the origin of this continuum are considered.
authors.affiliation: Laboratory for Laser Spectroscopy, Chemical Research Center of the Hungarian Academy of Sciences, Budapest, Hungary.
authors.forename: László
authors.initials: L
authors.lastname: Nemes
authors.forename: Anna M
authors.initials: AM
authors.lastname: Keszler
authors.forename: Christian G
authors.initials: CG
authors.lastname: Parigger
authors.forename: James O
authors.initials: JO
authors.lastname: Hornkohl
authors.forename: Hope A
authors.initials: HA
authors.lastname: Michelsen
authors.forename: Vadim
authors.initials: V
authors.lastname: Stakhursky
mesh_terms: D001128:Argon / Q000032:analysis; D002244:Carbon / Q000737:chemistry*; D004867:Equipment Design; D005609:Free Radicals; D005740:Gases; D006108:Graphite; D006371:Helium / Q000032:analysis; D007834:Lasers; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D013053:Spectrophotometry / Q000379:methods; D013997:Time Factors
chemical_list: D005609:Free Radicals; D005740:Gases; D006371:Helium; D001128:Argon; D002244:Carbon; D006108:Graphite