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X-ray detector typical of those used in solar observation satellites such as OSO-5. This commercial unit, manufactured by LND Inc., is a proportional counter. It converted impinging x-rays to an electrical signal and amplified that for further processing. It comprises a hollow metal gas-filled cylinder equipped with a window transparent to x-rays at one end. Electrons released by impinging x-rays will travel to the oppositely charged electrode. During the course of their travels, they collide with gas molecules which results in the release of further electrons. This process leads to a cascade of charge and the effective amplification of the electrical signal generated by the initial x-ray. The x-ray frequency detection range of the instrument is determined by choice of gas and the imposed electrical potential and the nature of the entrance window. This detector was transferred to NASM by NASA (GSFC) in 1988.

 Display Status

This object is on display in Boeing Aviation Hangar at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Boeing Aviation Hangar
Object Details
Country of Origin United States of America Type INSTRUMENTS-Scientific Manufacturer LND
 Dimensions 3-D: 7.6 x 1.9cm (3 x 3/4 in.)
 Materials Bag - plastic
Capsules - silica gel
Cylinder - metal
 Inventory Number A19880229000 Credit Line Transferred from the National Aeronautics and Space Administration Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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