1.
Appl Spectrosc
; 75(7): 774-780, 2021 Jul.
Article
in English
| MEDLINE
| ID: mdl-33739164
ABSTRACT
The branching ratio method is usually used to evaluate the optical thinness conditions in laser-generated plasmas, which are important for the application of analytical methods such calibration free laser induced breakdown spectroscopy (CF-LIBS). In this communication, we warn on the possibility that in some circumstances, the branching-ratio method might give results close to the one characterizing optically thin plasma conditions, even in the presence of a substantial self-absorption for the transitions considered.