Effect of Using Nanoscale Titanium as a Target Instead of a Bulk Target on Laser-Induced Plasma Properties

Abstract

In this work, the effect of the target configuration as nano or bulk-titanium target on the plasma emission and plasma parameter induced by Q-switched nanosecond Nd: YAG laser at different energies under vacuum was studied. The effect of laser energy (200, 300, and 400 mJ) on the parameter of the induced plasma was studied. The plasma number density was enhanced for the nano target compared with the bulk one, while the plasma temperature slightly increased. The Keldysh parameter indicates that the ionization from the titanium targets occurs through the multiphoton process. Using the nano target enhanced the LIPS intensity due to the different laser-matter interaction mechanisms of the nano-target compared with the bulk target. This technique can be used effectively for enhancing the breakdown spectroscopy, especially for targets of  low absorption