Huwel, Morgan Investigate Dynamics of Laser-Induced Sparks in Helium

Lutz Huwel, professor of physics, and Thomas Morgan, the Foss Professor of Physics, are the co-authors of an article titled “Investigating the dynamics of laser induced sparks in atmospheric helium using Rayleigh and Thomson scattering,” published in the Journal of Applied Physics, Volume 117 in January 2015.

The paper describes the use of two laser systems to prepare and study a helium plasma, and draws on an extensive international collaboration. The electron density and temperature of the plasma are measure as a function of time and space with high precision. The work has important impact in the area of laser induced breakdown spectroscopy and to the spectral line shape scientific community.