Categorical Exclusion Determination
Office of NEPA Policy and Compliance
January 2, 2019
minute read time
An experimental system has been designed to measure the changes to surfaces caused by light illumination. Specifically, a quartz crystal microbalance will be used to detect very small quantities of matter that absorb and desorb from a surface. The quartz crystal microbalance system is attached to a ConFlat flange and will be mounted on a gas flow reactor. An optical window will allow illumination of the quartz crystal microbalance crystal surface. Different non-laser sources will be used to illuminate the surface, including LEDs, with wavelengths from 200 - 1100 nm.