A Small Space Radiation Monitor Capable of Measuring Multiple I_SD-V_GS Values of MOSFET

Abstract

A small space radiation monitor capable of taking measurements of gate voltages of MOSFET for various drain currents has been developed for flight experiments aboard satellites. Measuring multiple ISDVGS values of MOSFET is expected to provide better understanding of the electronic response to ionizing radiation in space. In particular, separating the effects of oxide charge densities, interface charge densities, and temperatures is anticipated for the accurate determination of total ionizing dose. Description of the instrumentation for space-borne measurements is given, along with a summary of the anticipated results from this experiment.

KEYWORDS:

• RADFET
• space radiation
• dosimeter
• oxide trap
• interface trap