A simple replacement of tungsten filament hot cathodes by DC heated LaB6 rod and its noise characteristics with laser-induced fluorescence

doi:10.1063/5.0071496

	A simple replacement of tungsten filament hot cathodes by DC heated LaB6 rod and its noise characteristics with laser-induced fluorescence
	Jiang, Di 2; Yip, Chi-Shung 2; Zhang, Wei 2; Jin, Chen-yao 1,2; Xu, Guo-Sheng 2; Wang, Liang 2
刊名	REVIEW OF SCIENTIFIC INSTRUMENTS
	2021-12-01
卷号	92
ISSN号	0034-6748
DOI	10.1063/5.0071496
通讯作者	Yip, Chi-Shung(csyip@ipp.ac.cn)
英文摘要	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.
WOS关键词	VELOCITY ; TRANSPORT
WOS研究方向	Instruments & Instrumentation ; Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000758030200004
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127539]
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.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, 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).