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808 Vacuum Chamber808.jpg (26263 bytes)
  • For quick and convenient measurement of environmental samples with charged-particle detectors
  • Superior design and construction
  • Accommodates extra large samples
  • Easily adjustable and repeatable sample-detector geometry
  • Low-background sample holders
  • Compatible with any ORTEC charged-particle detector equipped with a Microdot® connector
  • Front-opening hinged door
  • Three-way, high-quality, "Pump", "Hold", and "Vent" vacuum valve
  • Compatible with the ORTEC ALPHA-PPS-115 (or -230) Portable Pumping Station
The ORTEC Model 808 Vacuum Chamber provides a quick and convenient way to measure the alpha and beta activity of environmental samples. It accommodates a wide range of sizes of samples and detectors. The chamber can accept sample trays measuring up to 10.8 X 14 cm (4-1/4 X 5-1/2 in.), with nominal sample size 10 cm (4 in.) in diameter.

The precise, internal, rack mounting structure ensures repeatable detector/sample geometry. A front-opening, hinged door permits easy access for inserting and removing samples and detectors.

A wide variety of charged-particle detectors fitted with a Microdot® S-93 connector can be used. Typically, one would use ORTEC ion implanted or surface-barrier detectors in a B mount; also suitable in certain applications are detectors in E or T mounts.

The sample holder trays are made of special low-background materials. The chamber is equipped with a hermetic electrical feedthrough that provides a male connection to a Microdot S-93 for ready installation of a silicon charged-particle detector and preamplifier.

A 3-inch hook-and-loop fastener is provided for connecting the preamplifier to the rear panel.

The ORTEC Model ALPHA-PPS-115 (or -230) Portable Pumping Station is an excellent choice for use with the Model 808 Vacuum Chamber.

ORDERING INFORMATION

Model   Description
808    Vacuum Chamber
ALPHA-PPS-115   Pumping Station (115-V ac version)
ALPHA-PPS-230   Pumping Station (230-V ac version)