Updated Version of the NASA SEE Program Spacecraft Contamination and Materials Outgassing Effect s Knowledgebase

This paper summarizes and updates new additions and changes to the NASA/SEE Spacecraft Contamination and Materials Outgassing Effects Knowledgebase (SCMOEK). Material outgassing data, optical properties of cryogenic films, round -robin outgassing summary, and space environmental effects library are discussed. Appro ximately 675 material outgassing data files are now included in the Knowledgebase and consists of many of the materials being used for space based applications. The round -robin series of tests were measurements made at 9 facilities throughout the United St ates that have the capability for making these measurements following the ASTM E -1559 Test Method. The optical property portion of the Knowledgebase consists of refractive (n) and absorptive (k) indices for 50