The application of magnetic field at low pressure for optimal laser-induced plasma spectroscopy
作者： Dae-Hyoung Kim , Yong H. Kihm , Soo-Jin Choi , Jae-Jun Choi , Jack J. Yoh
DOI: 10.1016/J.SAB.2015.05.006
关键词:
摘要: Abstract The application of magnetic field in controlling the charged particles laser induced plasma is considered. chara\cteristics depend on electron density and its recombination. effects as well ambient pressure are key factors for determining plasma. Two different energies (Low: 30 mJ/pulse, High: 140 mJ/pulse) range between 760 Torr 10 Torr used when focusing a Nd:YAG beam (1064 nm, 6 ns) onto metal samples where applied varied 0.1 0.5 Tesla. At 760 Torr, signal enhancement was obtained presence energy low. With lowered however, due to achieved regardless energy. related high frequency instability which controlled by intensity. In this paper, optimal conditions laser-induced spectroscopy at various low pressures discussed.
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