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In-situ characterization of nanoparticle beams focused with an aerodynamic lens by Laser-Induced Breakdown Detection.

Research paper by F-A FA Barreda, C C Nicolas, J-B JB Sirven, F-X FX Ouf, J-L JL Lacour, E E Robert, S S Benkoula, J J Yon, C C Miron, O O Sublemontier

Indexed on: 27 Oct '15Published on: 27 Oct '15Published in: Scientific Reports



Abstract

The Laser-Induced Breakdown Detection technique (LIBD) was adapted to achieve fast in-situ characterization of nanoparticle beams focused under vacuum by an aerodynamic lens. The method employs a tightly focused, 21 μm, scanning laser microprobe which generates a local plasma induced by the laser interaction with a single particle. A counting mode optical detection allows the achievement of 2D mappings of the nanoparticle beams with a reduced analysis time thanks to the use of a high repetition rate infrared pulsed laser. As an example, the results obtained with Tryptophan nanoparticles are presented and the advantages of this method over existing ones are discussed.