CLEMENTINE RRELAX SRAM PARTICLE SPECTROMETER

The Clementine RRELAX radiation monitor chip consists of a p-FET total dose monitor and a 4-kbit SRAM particle spectrometer. Eight of these chips were included in the RRELAX and used to detect the passage of th e Clementine (S/C) and the innerstage adapter (ISA) through the earth' s radiation belts and the 21-Feb 1994 solar flare. This is the first s pace flight for this 1.2-mu m rad-soft custom CMOS radiation monitor. This paper emphasizes results from the SRAM particle detector which sh owed that it (a) has a detection range of five orders of magnitude rel ative to the 21-Feb solar flare; (b) is not affected by electrons, and (c) detected microflares occurring with a 26.5-day period.