Knowledge Management System of Hefei Institute of Physical Science,CAS
A simple replacement of tungsten filament hot cathodes by DC heated LaB6 rod and its noise characteristics with laser-induced fluorescence | |
Jiang, Di1; Yip, Chi-Shung1; Zhang, Wei1; Jin, Chen-yao1,2; Xu, Guo-Sheng1; Wang, Liang1 | |
2021-12-01 | |
发表期刊 | REVIEW OF SCIENTIFIC INSTRUMENTS |
ISSN | 0034-6748 |
通讯作者 | Yip, Chi-Shung(csyip@ipp.ac.cn) |
摘要 | Hot cathode discharges are common plasma sources for fundamental plasma physics studies and other applications due to their quiescent and relatively simple properties, and tungsten filaments are commonly used for the ease of heating them. Recently, tungsten filaments are increasingly being replaced by less luminous alternatives, such as barium oxide or lanthanum hexaboride. These materials can emit electrons at temperatures close to 1000 K lower than tungsten, greatly reducing their blackbody radiations. This results in significant improvement in signal recovery for active spectral diagnostic, such as laser-induced fluorescence. However, these less luminous cathodes often come in vastly more complicated designs than those of tungsten hot cathodes and are much more expensive to procure and difficult to operate. In this paper, we present a simple, low cost direct current heated design of a LaB6 cathode that is manufactured at suitable dimensions and make a comparison of the laser-induced fluorescence (LIF) signal-to-noise ratio of this LaB6 hot cathode discharge with that of a typical tungsten filament discharge, revealing that LaB6 has, indeed, an improved LIF signal-to-noise ratio compared with the tungsten filament. Published under an exclusive license by AIP Publishing. |
DOI | 10.1063/5.0071496 |
关键词[WOS] | VELOCITY ; TRANSPORT |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Instruments & Instrumentation ; Physics |
WOS类目 | Instruments & Instrumentation ; Physics, Applied |
WOS记录号 | WOS:000758030200004 |
出版者 | AIP Publishing |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/127540 |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Yip, Chi-Shung |
作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
推荐引用方式 GB/T 7714 | Jiang, Di,Yip, Chi-Shung,Zhang, Wei,et al. A simple replacement of tungsten filament hot cathodes by DC heated LaB6 rod and its noise characteristics with laser-induced fluorescence[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2021,92. |
APA | Jiang, Di,Yip, Chi-Shung,Zhang, Wei,Jin, Chen-yao,Xu, Guo-Sheng,&Wang, Liang.(2021).A simple replacement of tungsten filament hot cathodes by DC heated LaB6 rod and its noise characteristics with laser-induced fluorescence.REVIEW OF SCIENTIFIC INSTRUMENTS,92. |
MLA | Jiang, Di,et al."A simple replacement of tungsten filament hot cathodes by DC heated LaB6 rod and its noise characteristics with laser-induced fluorescence".REVIEW OF SCIENTIFIC INSTRUMENTS 92(2021). |
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