Electron temperature is usually calculated by measuring the continuum contribution in the emission spectrum or through the Thomson scattering by using an external light source. Which method is more accurate?Is there another method?
Hi Ali,
The following article may be helpful:
dx.doi.org/10.1021/ed3003385
dx.doi.org/10.1088/0022-3727/39/7/008
Dear,
May be also the following :
''CONTINUUM EMISSION AS A DIAGNOSTIC FOR THE ELECTRON DENSITY AT PILOT-PSI'' FOM Institute for Plasma Physics Rijnhuizen, Nivard Kagie and ir. G.J. De Rooij , Utrecht University
Hi Safi,
LIBS ulizes a high-powered laser that is focused on the sample causing a plasma to form. The emission of this plasma is then spectrally resolved and detected.
Electron Temperature and electron number density of the plasma can be determined from the characteristics of the spectrum.
You can use Boltzmann plot method, which
assumes that LTE ( local thermodynamic equilibrium ) is met
within the plasma. The Boltzmann
plot method is a common way of reporting plasma temperatures
in the LIBS community.
alternative methods, such as the two-line method of the
Boltzmann distribution. The two-line Boltzmann method
compares the ratios of relative intensities of two lines that
have known degeneracies, transition probabilities, and upperenergy
values. The Boltzmann plot method uses multiple lines
that have known degeneracies, transition probabilities, and
upper-energy values to graphically determine the temperature.
You may need to survey some literature.
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