Phosphor Screens are made of high luminosity P-22 phosphor (ZnS:Ag). The screens are sensitive to electrons starting at approximately 500 eV with a threshold of 1 x 10-7 A/cm2. There are two basic types of phosphor screens: Rugged and UHV. The rugged screens are more resistant to mechanical damage. Their phosphor composition includes a binder that increases durability, however they can experience outgassing at vacuum pressures nearing 10-8 torr. The UHV screens are fabricated with the same phosphor, but without using a binder, and although more delicate, these screens can be used to extremely low vacuums of more than 10-8 torr. Several configuration options are available. The phosphor composition can be coated on either Stainless Steel 304 or Conductive Glass. The various diameter screens can either mounted on a thin CF flange (RHEED Screens) or can be mounted on stainless steel eV Parts of various sizes (Rugged Screens and UHV Screens).
To LEARN MORE about Kimball Physics Phosphor Screen Detectors, please refer to our Detectors- Phosphor Screen Overview document (PDFs). Further information is also available in our online Learning Center about Phosphor Screen Detectors.