MOS dosimeters-improvement of responsivity

Radiation-sensitive field effect transistors (RADFETs), based on the metal-oxide-semiconductor transistor, are used as remotely and non-destructively read dosimeters in spacecraft and in medicine. The RADFET has evolved from the simple MOS transistor device by a research on oxide thickness dependence of charge buildup and extensive dosimetric performance measurements. To develop a product line, RADFET devices with increasingly thick oxides have been made. Some results of this work are described