Our Ultra-high vacuum chamber allows for in situ testing and measurement of optical properties within a simulated space environment. (See also our space effects measurement service):
- Equipped with a 1600 Watt SpectraPhysics ultraviolet (UV) light source and a 150 Watt Hamamatsu Deuterium vacuum ultraviolet (VUV) light source. The UV source uses a water filter to minimize sample heating, upgradeable by adding both low energy Electron Flood Gun and Proton Sources;
- In situ measurement of total spectral hemispherical reflectance and solar alpha can be made by utilizing AZ Technology’s LPSR-300V spectroreflectometer; (Wavelength range: 250-2800nm; Measurement time two minutes per sample);
- Twelve 1″x.75″ samples can be exposed simultaneously;
- Types of samples include:
- powder,
- thin films,
- coatings;
- Temperature controlled -30 C to 100 C
- Sample tray transfer mechanism between exposure and measurement chambers utilizes a retractable linear magnetic translator attachment,
- The sample tray’s orientation is horizontal.
- Types of samples include:
- Vacuum system is UHV and utilizes both ion and turbo pumps. Operational vacuum level is ~10-9 Torr and the sample exposure chamber is ion pumped.
- In situ monitoring of irradiance utilizes an in situ fiber optic probe for spectral radiometer data of the UV source and a NIST calibrated detector for the VUV source.
| *Note: terms reflectance, emittance and absorptance and terms reflectivity, emissivity and absorptivity are often used interchangeably. Spectroreflectometer, spectro-reflectometer and spectral reflectometer are also used interchangeably. |