Time-resolved emission characteristics and temperature profiles of laser-induced plasmas in helium
作者： Martha R. Joseph , Ning Xu , Vahid Majidi
DOI: 10.1016/0584-8547(94)80158-4
关键词: Buffer gas 、 Quenching 、 Laser 、 Excitation temperature 、 Helium 、 Chemistry 、 Plasma 、 Atomic physics 、 Emission spectrum 、 Argon
摘要: Abstract The characteristics of laser-induced plasmas vary greatly with the composition analyte in focal volume region. plasma size, stability and emission properties change any alteration pressure, concentration or phase medium. Choice a buffer gas suitable for studies involves examining spectral interferences, energy, collisional quenching, as well efficiency energy transfer observed by signal enhancement. emissions ultraviolet visible region resulting from formation helium at various pressures, without solid target, on surfaces aluminum copper are examined. time-resolved spectra electronic excitation temperature profiles presented. These results then compared those produced argon.
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