STABILITÉ DE GAZ NOBLE DE POMPE IONIQUE À L'AIDE D'UN MATÉRIAU DE CATHODE À PETITES TAILLES DE GRAINS

摘要

A method includes assessing a plurality of Titanium plates to determine a grain size for each plate and removing all Titanium plates with an average grain size that is larger than a threshold size from the plurality of Titanium plates. One of the Titanium plates remaining in the plurality of Titanium plates after the removing step is then used to form a cathode for an ion pump.