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	Handheld analyzer and method for measuring elemental concentration
	GAPONTSEV, VALENTIN; KURATEV, IVAN; BIRYUKOV, ROMAN; FEDYNA, EKATERINA; PASHKO, SERGEY; MELOVATSKY, OLEG; REZNIKOV, ANDREY; KOVYZHENKO, NADEZHDA; OULIANOV, DMITRI
	2019-05-09
著作权人	IPG PHOTONICS CORPORATION
专利号	US20190137403A1
国家	美国
文献子类	发明申请
其他题名	Handheld analyzer and method for measuring elemental concentration
英文摘要	The disclosed method and handheld analyzer of elemental concentration measurement is based on spectral analysis of high temperature highly ionized plasma generated by laser-generated pulses. Due to a high pulse energy and short pulse duration, high intensity singly and multiply charged ion lines in addition to neutral atomic lines are excited. The pulsed laser source of the disclosed analyzer is configured to output a train of pulses of signal light at a 5-6 signal wavelength at a pulse repetition rate from 0.1 to 50 kHz, pulses duration from 0.01 to 5 ns, pulse energy between 100 and 1000 uJ and has a beam spot on the surface of the sample varying 1 to 60 μm. The above-described parameters provide at least a 20 GW/cm2 laser power density sufficient to induce a high temperature, highly ionized plasma (plasma) which allows measuring the carbon concentration in carbon steels by employing doubly charged ionic line CII with a detection limit down to 0.01% and other elements commonly present in carbon steels with detection limit below 0.01%.
公开日期	2019-05-09
申请日期	2017-04-11
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/62569]
专题	半导体激光器专利数据库
作者单位	IPG PHOTONICS CORPORATION
推荐引用方式 GB/T 7714	GAPONTSEV, VALENTIN,KURATEV, IVAN,BIRYUKOV, ROMAN,et al. Handheld analyzer and method for measuring elemental concentration. US20190137403A1. 2019-05-09.

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