Illustration showing the fixed molecular beam path through the Knudsen cell, inner heat shield, field aperture, source aperture, ion exit slit, and ion source, along with the dimensions
Schematic of the fixed field and source apertures that attenuate a fixed molecular beam. The effusate is sampled by accurately aligning each cell with the fixed apertures.


previous page Return to article


Last updated: June 25, 2003


Responsible NASA Official: Gynelle.C.Steele@nasa.gov
216-433-8258

Point of contact for NASA Glenn's Research & Technology reports: Cynthia.L.Dreibelbis@nasa.gov
216-433-2912
SGT, Inc.

Web page curator: Nancy.L.Obryan@nasa.gov
216-433-5793
Wyle Information Systems, LLC

NASA Web Privacy Policy and Important Notices