Laser Induced Breakdown Spectroscopy with Low Energy Laser Pulses

摘要

In this paper we explore laser induced breakdown spectroscopy (LIBS) at relatively low energies in the range 10-350 muJ. We present measurements of the threshold laser energy needed for LIBS and the scaling of plasma size and crater size with energy. The effects of the laser pulse length and gating of the detector on the LIB spectra are studied and we also assess the use of microjoule LIBS for the identification of Al alloys.