Linear position-sensitive x-ray detector incorporating a self-scanning photodiode array.
A linear position-sensitive x-ray detector for x-ray spectroscopy and diffraction applications has been tested which can provide excellent spatial resolution, wide dynamic range and good sensitivity. The heart of the system is a self-scanning, photosensitive silicon diode array. It is interfaced via fiber optics to a thin layer of ZnS which fluoresces visible light upon absorption of x-radiation. The conversion to visible light and optical coupling provide several-fold gain in the efficiency of detection as compared to the direct detection of x-ray by the diode array. Equally important is that the array is protected from irreversible damage by high energy radiation, a limitation which previously hindered this application of silicon diode technology.
Gamble
R C
RC
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.
Baldeschwieler
J D
JD
Giffin
C E
CE