Ricardo E. Samad

TL;DR: In this article, a laser induced breakdown spectroscopy (LIBS) system has been evaluated for the determination of macronutrients (P, K, Ca, Mg) in pellets of vegetal reference materials.

TL;DR: It is shown that it is possible to write tracks in the LiF crystals with dimensional control and the proposed mechanism of formation is based on multiphoton excitation that also produce short lived F(2) (+) centers.

TL;DR: In this paper, a simple method to create silver nanoparticles that consists in the irradiation of a silver nitrate and Euphorbia milii solution by light from a xenon lamp followed by ultrashort laser pulses was reported.

TL;DR: Data obtained indicate both that it is a matrix-independent sampling process and that fs-LIBS can be used for the determination of Ca, Cu, Fe, K, Mg, Na, and P, but efforts must be made to obtain more appropriate detection limits for Al, Sr, and Zn.

TL;DR: In this article, an analytical expression capable of calculating the on-axis far-field electric field of a Gaussian beam carrying a phase with a Gaussian profile is obtained, based on the Huygens-Fresnel principle.