” We installed multiple kinds of lasers in the gas-phase D–Pd reaction system to irradiate
the Pd samples coated with noble metal nanoparticles, as energetic stimulation support, potentially
with a boosting plasmonic local field-enhancement effect.”
What type of lasers and what was power density?
Look at the video linked by Kevmo in his first comment. The answer to your question can be found from 1:08 to 1:41 in that video.