Abstract

A small ceramic ion chamber has been developed for a rocket astronomy program in the vacuum ultraviolet. The chamber consists of a small metal-plated ceramic shell incorporating a window of LiF, CaF2, or BaF2 and containing a filling gas of nitric oxide, acetone, carbon disulfide, or others. Typical quantum yields range from 8–10% for acetone with CaF2 window to 50–60% for carbon disulfide with LiF window. Details of the chamber construction are given, and some recent applications of the detector are described.

© 1963 Optical Society of America

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