Study of self-absorption in laser induced breakdown spectroscopy

We present a simple analytical expression for self-absorption correction of a spectrum recorded in the image mode of a CCD camera. It is assumed that two spectra are available, F2 recorded with a back mirror and F1 recorded without. The corrected spectrum F0, free of self-absorption, is given by the following simple expression F0=2F11+F2−F1GF1. We discuss the influence of noise on subsequent inverse Abel transform. An example, illustrating proposed method for self-absorption correction and Abel inversion is given in details.