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作 者:Jelena PETROVIC Dragan RANKOVIC Miroslav KUZMANOVIC Jelena SAVOVIC Vasili KIRIS Alena NEVAR Mikhail NEDELKO Nikolai TARASENKO
机构地区:[1]University of Belgrade,Institute of Nuclear Sciences Vinca,Mike Petrovica Alasa 12-14,Belgrade 11001,Serbia [2]University of Belgrade,Faculty of Physical Chemistry,Studentski trg 12-16,Belgrade 11000,Serbia [3]Institute of Physics,National Academy of Sciences of Belarus,Nezalezhnasci Ave.68-2,Minsk 220072,Belarus
出 处:《Plasma Science and Technology》2023年第4期175-183,共9页等离子体科学和技术(英文版)
基 金:funded by the Ministry of Education,Science and Technological Development of the Republic of Serbia(Nos.451-03-68/2022-14/200017 and 451-03-68/2022-14/200146);the financial support of the State Committee on Science and Technology of the Republic of Belarus;the Belarusian Republican Foundation for Fundamental Research(No.F20SRBG-001)。
摘 要:Time-integrated optical emission analysis of laser-induced plasma on Teflon is presented.Plasma was induced under atmospheric pressure air using transversely excited atmospheric CO_(2) laser pulses.Teflon is a C-based polymer that is,among other things,interesting as a substrate for laser-induced breakdown spectroscopy analysis of liquid samples.This study aimed to determine the optimal experimental conditions for obtaining neutral and ionized C spectral lines and C2 and CN molecular band emission suitable for spectrochemical purposes.Evaluation of plasma parameters was done using several spectroscopic techniques.Stark profiles of appropriate C ionic lines were used to determine electron number density.The ratio of the integral intensity of ionic-to-atomic C spectral lines was used to determine the ionization temperature.A spectral emission of C2 Swan and CN violet bands system was used to determine the temperature of the colder,peripheral parts of plasma.We critically analyzed the use of molecular emission bands as a tool for plasma diagnostics and suggested methods for possible improvements.
关 键 词:spectroscopy of laser-induced plasma laser-induced breakdown spectroscopy transversely excited atmospheric CO_(2)laser plasma diagnostics atomic and molecular emission spectra TEFLON
分 类 号:TQ317[化学工程—高聚物工业]
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