Use Of Laser Induced Breakdown Spectroscopy (LIBS)

Laser-induced breakdown spectroscopy (LIBS) uses the spectral emission from the laser induced plasma (LIP) for elemental exploration of the target material. However, from the instant the plasma is formed until the moment it is dispersed away, it goes through different phases. The spectra thus observed at different delays and different gate widths are different. Laser-induced breakdown spectroscopy (LIBS) is a method of atomic emission spectroscopy (AES) that make use of laser-generated plasma as the hot vaporization, atomization, and excitation source. In its basic form, a LIBS measurement is carried out by forming laser plasma on or in the sample and then collecting and spectrally analyzing the plasma emission lines. Qualitative and quantitative analyses are carried out by examine emission line positions and intensities respectively.

LIBS is a spectroscopic analysis technique that uses the light emitted from a laser induced micro plasma to determine the composition of the sample, on the basis of elemental and molecular emission intensities. The ability of LIBS is to provide remote, rapid multi-element micro analysis of bulk sample

A high energy laser pulse is focused on the target which can be a gas, liquid, or solid substance generating a dielectric breakdown or “plasma-spark”. This high-temperature atomization provides sufficient energy for the transition of atoms into different atomic energy levels. The atoms thus decay resulting in narrow “fingerprint” of elemental emission line spectra. The integration of laptop computers, optical fiber spectrometers and small high power laser transmitters has directed to the development of portable LIBS analytical equipment. LIBS portable analyzer systems are capable of real-time qualitative & quantitative in-situ analysis with small or no sample