Figure 5

The obtained Raman signal of air, captured using 3000 exposures while the plasma jet and argon flow was inactive. Fitting of the binned spectrum as shown in the right graph allowed to obtain the calibration constant C from Eq. (1).

The obtained Raman signal of air, captured using 3000 exposures while the plasma jet and argon flow was inactive. Fitting of the binned spectrum as shown in the right graph allowed to obtain the calibration constant C from Eq. (1).