A self-absorption effect correction method for laser breakdown spectrum
A technology of laser breakdown spectrum and self-absorption effect, which is applied in the field of plasma emission spectroscopy and spectral technology measurement, can solve the problems of spectral line distortion and weakening of spectral line intensity, and achieve the effect of improving measurement accuracy
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[0040] Taking the titanium alloy sample as an example, the laser breakdown spectroscopy experiment was carried out on the aluminum alloy sample, and the content of titanium and vanadium in the sample was quantitatively analyzed by using the calibration-free method.
[0041] The experimental conditions are as follows: the pulsed laser used in the experiment is an ND:YAG solid-state laser, the laser wavelength is 1064nm, the pulsed laser can emit pulsed laser, the total energy of each pulsed laser is 80mJ, the pulse width of the laser pulse is 6ns, and the laser repetition rate is 1Hz. Focus the laser on the surface of the sample and ablate the sample. The diameter of the focused laser spot is about 0.2 mm. After the plasma is generated, the spectral lines are analyzed. A lens is used to guide the light emitted by the plasma into an optical fiber, and the optical fiber transmits it to a spectrometer. The spectrometer analyzes the light emitted by the plasma and outputs the origi...
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