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高温材料处理:国际期刊

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ISSN 打印: 1093-3611

ISSN 在线: 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

ELECTRODE SPOT PLASMAS OF ELECTRIC ARCS

卷 6, 册 2, 2002, 12 pages
DOI: 10.1615/HighTempMatProc.v6.i2.90
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摘要

A review is given on recent results on electrode spot plasmas in electric arcs, in particular for arc cathode spots at medium currents. Ignition and nature of the spots are described for various gas pressures and electrode temperatures. Experiments with high resolution in space and time yielded new insight into the nature of the spot plasma, viz. parameters, structures, configurations, and ignition processes. The paper starts with a description of electrode spots in gaseous arcs with special attention to the glow-to-arc transition. For the latter it is shown that anode spots precede the cathode spots in the glow phase, thus creating favourable conditions for field electron emission at the cathode due to enhanced plasma density. After that, high resolution pictures of cathode spots in vacuum are presented that demonstrate micrometer substructures and configuration changes on time-scales of 10 ns - 100 ms. Also, the influence of magnetic fields is treated, including the retrograde cathode spot motion at reduced pressures.

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