1 Images

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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