A novel device for spectrochemical analysis based on a combination of LIBS and a hollow cathode discharge

5th International Workshop & Summer School on Plasma Physics 2012

Karatodorov, S.^1 ; Steflekova, V.^1 ; Mihailov, V.^1 ; Mihailova, D.^2 ; Van Dijk, J.^2 ; Van Der Mullen, J.^2 ; Grozeva, M.^1

Institute of Solid State Physics, Bulgarian Academy of Sciences, Bulgaria^1

Department of Applied Physics, Eindhoven University of Technology, Netherlands^2

关键词: Analytical performance;    Analytical signals;    Excitation efficiency;    Hollow cathode discharge;    Hollow cathodes;    Species distributions;    Spectrochemical analysis;    Stand-alone lasers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/715/1/012009/pdf
DOI  :  10.1088/1742-6596/715/1/012009

来源: IOP

【 摘 要 】

A new modified analytical scheme of laser ablation-hollow cathode discharge (LA- HCD) for elemental analysis is reported. The novelty is the use of a hollow cathode with a longitudinal slit. This slit enables registration of the axial species distribution in the discharge and decoupling of the laser and the analytical signals. In this paper preliminary experiments on the modified LA-HCD set-up are reported. The improved analytical performance of the new LA-HCD scheme is demonstrated by comparing it to stand-alone laser induced breakdown spectroscopy. The results of the modified LA-HCD technique show enhancement of the excitation efficiency.