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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

年間 4 号発行

ISSN 印刷: 1093-3611

ISSN オンライン: 1940-4360

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00005 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

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TIME RESOLVED LASER INDUCED BREAKDOWN SPECTROSCOPY FOR FLUORINE, CHLORINE AND SULFUR DETECTION USING AN OPTICAL FIBER PROBE

巻 4, 発行 1, 2000, 18 pages
DOI: 10.1615/HighTempMatProc.v4.i1.70
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要約

Our goal is to develop an optical spectroscopy analysis of toxic molecular compounds by using the atomic emission of a plasma induced by a Nd:YAG laser (TRELIBS). The qualitative and quantitative analysis have been carried out on chlorine and fluorine atoms from organohalogenated molecules. The experimental setup uses a Nd:YAG laser at 1064 nm and a cylindrical cell in stainless steel through which the gas flow is introduced. The laser beam is focused in the cell through a BK7 lens, while the emission wavelengths are analyzed by a 24 optical fiber probe connected to a spectrometer with an optical multichannel analyzer, and a computer. The time resolution of plasma emissions with a gated image intensifier leads us to a best signal to noise ratio (SNR) on atomic emission lines with 0.5 to 4 μs delay between the end of the laser pulse and the detector aperture. Spectral, time and space resolution permit a high reproducibility and a good sensitivity of the method (close to 10 ppm(w/w)).
The high temperature of the plasma produced by a laser beam of 100 mJ is responsible of the total decomposition of the molecular structure and explains the high excitation states of the atoms such as Cl, F, S, P.

によって引用された
  1. Gehlen Christoph Dominic, Wiens Eugen, Noll Reinhard, Wilsch Gerd, Reichling Kenji, Chlorine detection in cement with laser-induced breakdown spectroscopy in the infrared and ultraviolet spectral range, Spectrochimica Acta Part B: Atomic Spectroscopy, 64, 10, 2009. Crossref

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