
The LA Fires Spewed Out Toxic Nanoparticles. He Made It His Mission to Trace Them
Spada’s is one of the hardest projects to tune the beam for. “The beam is way over-powered to run my samples, at baseline,” Spada said, comparing the amount of power he needs to a couple drops of water, “but the beam, it’s like Niagara Falls.” The technique Spada relies on, particle-induced x-ray emission (PIXE), is…