Laser Induced Breakdown Spectroscopy

[Farah Ikram]

my question is why oxygen lines does not appear in metal oxides spectrum taken at 532nm wavelength of Nd:YAG laser at atmospheric pressure. and what is the criteria for selecting emission lines for analysis?

 

[Lambduh]

Maybe it's oxygen in the atmosphere is reabsorbing those photons?

It would depend on the flux coming from your sample and the distance to and sensitivity of your spectrometer set up.

There might be a more obvious reason, I'm no spectroscopist.

 

[Farah Ikram]

you may be right...i'm thinking about the same reason becuase the self absorption increases in the UV range and oygen spectrum lies in the UV...another thing is that may be the air itself gets too thick near plasma it may also absorb the radiations as u have said