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

Published 4 issues per year

ISSN Print: 1093-3611

ISSN Online: 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

Indexed in

DIAGNOSTICS OF LIGHTING ARC PLASMAS BY NON-LTE EMISSION SPECTROSCOPY

Volume 8, Issue 4, 2004, pp. 535-547
DOI: 10.1615/HighTempMatProc.v8.i4.40
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ABSTRACT

Plasma diagnostics of arc light sources is of immediate interest in developing a better understanding of the atomic processes that govern their operation. Due to new application ranges, e.g., interior lighting and automobile headlights, these devices, especially the metal-halide lamps, are of increasing practical importance. Mass movement and energy transfer within the arc volume are factors causing deviation of the plasma state from thermodynamic equilibrium. Diagnostics methods that are free from equilibrium assumptions are, therefore, of primary importance. An emission spectroscopy diagnostic method using self-reversed lines was developed. This method is relatively easy to apply, does not require complex technology, and it is free from equilibrium assumptions. Application examples in mercury and mercury-metal halide arc lamps are given and discussed. The obtained results show substantial differences between excitation, electron and LTE temperatures indicating severe departures from excitation equilibrium. These departures depend on the presence of the easily ionizable metal of the metal halide. Indications of strong overpopulation of the resonance and metastable thallium states with respect to the ground state are obtained in an arc lamp containing mercury and thallium iodide.

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