Laser-Induced Optical Breakdown in Methane: Diagnostic Using H-Gamma Line Broadening

Table 2

Measured H-beta widths.

𝑡delay [𝜇s]	2.7×10^5 Pa:	6.5×10^5 Pa:
	width [nm]	width [nm]
0.4	10.0 ± 0.9	10.0 ± 0.5
0.5	9.0 ± 0.8	8.7 ± 0.5
0.6	8.1 ± 0.7	7.8 ± 0.5
0.7	7.4 ± 0.5	7.3 ± 0.4
0.8	6.8 ± 0.4	6.5 ± 0.4
0.9	6.3 ± 0.4	5.9 ± 0.4
1.0	5.9 ± 0.4	5.4 ± 0.4
1.1	5.3 ± 0.4	5.1 ± 0.3
1.2	5.0 ± 0.3	4.8 ± 0.3
1.3	4.7 ± 0.3	4.5 ± 0.3
1.4	4.4 ± 0.3	4.1 ± 0.3
1.5	4.1 ± 0.3	3.9 ± 0.3
1.6	3.9 ± 0.3	3.7 ± 0.2
1.7	3.8 ± 0.3	3.5 ± 0.2
1.8	3.6 ± 0.2	3.3 ± 0.2
1.9	3.3 ± 0.2	3.1 ± 0.2
2.0	3.1 ± 0.2	2.9 ± 0.2
2.1	2.9 ± 0.2	2.8 ± 0.2