Abstract
Investigations on key characteristics of ions emitted from Laser Induced plasmas are reported. A Q-switched Nd: YAG pulsed laser at 1064 nm, 9–14 ns and 1.1 MW, is focused on 4 N pure Gold (Au) and Platinum (Pt) targets to produce plasma plume. The ions thus emitted are detected by CR-39 Solid State Nuclear Track Detectors (SSNTD’s), placed at angles 0°, 30°, 60°, and 90° with respect to the target normal. The distances between the targets and detectors are 9 cm. The experiments are performed under a vacuum ∼10
−3 torr and the ion tracks are recorded on SSNTD’s for 300 laser shots. The etched detectors are analyzed with the help of Motic Images Optical Microscope (Motic Advance 3.1). The flux of ions exhibits anisotropic behavior where as maximum energies of these ions are not only anisotropic but also forward peaked.
► Investigations on ions emitted from Laser Induced Plasma ► A Q-switched Ndw: YAG pulsed laser at 1064 nm, 9–14 ns and 1.1 MW, is focused on 4 N pure Gold (Au) and Platinum (Pt) targets at 45° with the normal to the target ► The emitted ions thus are detected by CR-39 Solid State Nuclear Track Detectors (SSNTD’s), placed at angles 0°, 30°, 60°, and 90° with respect to the target normal. ► The distance between the targets and detectors is 9 cm ► The experiments are performed under a vacuum ∼10
−3 torr and the ion tracks are recorded on SSNTD’s for 300 laser shots. ► The etched detectors are analyzed with the help of Motic Images Optical Microscope (Motic Advance 3.1). ► The flux of ions exhibits anisotropic behavior where as maximum energies of these ions are not only anisotropic but also forward peaked. ► YAG Laser, Ions Emission, SSNTD’s, Anisotropy and Forward Peaking and Vacuum