Atomic Oxygen Monitor Based on Resistance Film

Atomic oxygen (AO) monitor based on resistance film had been developed for the detection of flux of AO impinging on the surface of the spacecraft in low earth orbit (LEO) and AO erosion effects. The monitor is comprised of electrical resistance film which is made of some AO susceptible conductive materials. The electrical resistance will change as monitor is eroded by AO attack. The AO flux and the erosion rate of flight samples can be deduced by measuring electrical resistance changes in-situ.