The CO signals from FiberForm exhibited only TD characteristics. As described above, three processes were identified and are referred to as TD-prompt, TD-slow1, and TD-slow2. TD-slow1 and TD-slow2 are distinguished by the order of magnitude of the desorption rates. The effective decay rate of TD-slow1 is around 10 -3 µs -1 (lifetime ~1000 µs) and the decay rate of TD-slow2 is around 10 -5 µs -1 (lifetime ~100,000 µs). In the previous work on vitreous carbon , one slow CO process with a lifetime of 1500 µs was identified at 800 K. After re-examining the TOF distributions of CO from vitreous carbon, we have identified two slow processes (TD-slow1 and TD-slow2), akin to those observed for FiberForm. TOF distributions of CO for FiberForm and vitreous carbon are shown in Figures and respectively. We have also quantified the flux of TD-slow1 and TD-slow2 from vitreous carbon in a similar manner to that described above. Unlike O, CO TOF distributions do not contain an effusive background, enabling us to analyze TOF distributions for the duration of the pass length in the experiment, which was 20,000 µs.