Typical measurements of the laser beam power and the ICCD monitor signal.
(a) Beam path setup to rotate the plasma image by 90°; (b) Target surface locations S1 to S4 corresponds to target–lens separations 156, 160, 164,168 mm, respectively.
Images for lens–target separations D = 156 mm (a), 160 mm (b), 164 mm (c), 168 mm (d) at positions S1 to S4, respectively.
Axial radiation intensity for S1 (a) and S2 (b) cases.
Comparisons of shots in which LIAB did and did not occur.
L-t curves extracted from the recorded images for D = 156 mm (a), 160 mm (b), 164 mm (c), 168 mm (d), corresponding to laser fluence 0.12, 1.1, 6.6, 0.17 J/mm2, respectively.
Two-dimensional spectral images at 1μs: Cu I for the 156 mm case (a); N I for the 156 mm case (b); Cu I for the 160 mm case (c); N I for the 160 mm case (d).
Typical spectral lines of Cu I at 1000 ns and 2000 ns for the S1 and S2 cases.
Electron number density estimated from three spectral lines for the 156 mm (S1) case and 160 mm (S2) case.
Article metrics loading...
Full text loading...