Detector, Electron Multiplier
- Bendix Corp.
- Bendix manufactured this open cathode electron multiplier and detector circa early 1960s, typical of detectors flown on early OSO spacecraft. The cathode is not enclosed in a glass or other insulating envelope since it was designed to work in the vacuum of space. A sufficiently energetic UV photon striking the cathode at the entrance grid of the device results in the release of one or more electrons. The first of a series of permanent magnets then directs the emitted electrons onto a strip of specially coated glass. This results in the release of a large number of secondary electrons. Repetition of this process leads to a cascade of charge with the resulting current gain as high as 10 million fold.
- The detector was transferred to NASM by NASA (GSFC) in 1995.
- Credit Line
- Transferred from the National Aeronautics and Space Administration
- Inventory Number
- Restrictions & Rights
- Usage conditions apply
- Overall - metal and glass, electronics
- 3-D: 8 x 3.3 x 2.9cm (3 1/8 x 1 5/16 x 1 1/8 in.)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- Steven F. Udvar-Hazy Center in Chantilly, VA
- Boeing Aviation Hangar
- National Air and Space Museum
- Record ID
- Usage of Metadata (Object Detail Text)
- Not determined
- GUID (Link to Original Record)