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Diagnostics of laser-induced plasma on carbon-based polymer material using atomic and molecular emission spectra
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作者 Jelena PETROVIC Dragan RANKOVIC +5 位作者 Miroslav KUZMANOVIC Jelena SAVOVIC Vasili KIRIS Alena NEVAR Mikhail NEDELKO Nikolai TARASENKO 《Plasma Science and Technology》 SCIE EI CAS CSCD 2023年第4期175-183,共9页
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... 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. 展开更多
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
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Recent Progress in Radiative-Rate Determination of Some Heavy Ions (Xe<sup>9+</sup>, Xe<sup>10+</sup>, Lu<sup>3+</sup>, Hf<sup>4+</sup>, Ta<sup>5+</sup>) of Interest in Fusion
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作者 Saturnin Enzonga Yoca 《Journal of Applied Mathematics and Physics》 2021年第11期2848-2888,共41页
This paper presents a review about the radiative properties (transition probabilities and oscillator strengths) of two xenon ions (Xe<sup>9+</sup>, Xe<sup>10+</sup>) and three members of Er I i... This paper presents a review about the radiative properties (transition probabilities and oscillator strengths) of two xenon ions (Xe<sup>9+</sup>, Xe<sup>10+</sup>) and three members of Er I isoelectronic sequence (Lu<sup>3+</sup>, Hf<sup>4+</sup>, Ta<sup>5+</sup>) of interest in controlled thermonuclear fusion, including our recent theoretical data obtained using two independent theoretical atomic structure computational approaches (semi-empirical Hartree-Fock with relativistic corrections method (HFR) and the <em>ab initio</em> multiconfiguration Dirac-Hartree-Fock (MCDHF)). The tables, from the second one, summarize the recommended data expected to be useful for plasma modelling in fusion. 展开更多
关键词 atomic spectra atomic Data Transition Probabilities Oscillator Strengths Heavy Elements
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Studies on odd-parity states of the Sm atom
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作者 关锋 戴长建 赵洪英 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第10期3655-3661,共7页
Two-step excitation and ionization processes are used to detect Sm atoms in many excited states populated with tunable lasers. The wavelength of the first laser is tuned to the resonances from the Sm 4f^6 6s^2 ^7FJ (... Two-step excitation and ionization processes are used to detect Sm atoms in many excited states populated with tunable lasers. The wavelength of the first laser is tuned to the resonances from the Sm 4f^6 6s^2 ^7FJ (J=0 6) states to many odd-parity states with different electronic configurations, where the atoms are detected by photoionization process using an ultraviolet laser with a wavelength of 355 nm. Precise measurements on the energy level and intensity for many Sm 4f^6 6s6p and 4f^5 5d6s^2 states have been carried out. In a theoretical analysis on the spectral data, such as peak position, relative intensity, many transitions can be identified as the resonances from the Sm 4f^6 6s^2 7FJ (J=0-6) states to the atomic states with 4f^6 6s6p and 4f^5 5d6s^2 electronic configurations. This work also reports many spectral data on the odd-parity states that cannot be found in the literature. 展开更多
关键词 spectra of Sm atom odd-parity excited state photoionization detection
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