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LAS\MODIFY BEAM_EFF Value
LAS\MODIFY BEAM_EFF /RUZE B0 Sigma
Change the beam efficiency.
The first syntax allows to define the new beam efficiency from a single
value for the whole spectrum. If the beam efficiency previously had a
non zero value, the spectrum intensities and affected header parameters
are rescaled according to the old and new values. Otherwise, only the
beam efficiency is set to the new value.
The second syntax allows to use the Ruze's equation, which is more suit-
able for large band spectra:
Beeff(lambda) = B0*exp(-(4*pi*Sigma/lambda)**2)
B0 is the scaling factor with no units (between 0 and 1), and Sigma the
width factor in microns.
If the beam efficiency previously had a non zero value, a rescale factor
is evaluated for each channel and is applied to the intensities, the new
beam efficiency is set to the one at the center of the spectrum, and the
affected header parameters are rescaled according to this new value.
Otherwise, only the beam efficiency is set to this new value.