title: Field-emission cold-cathode el source for a microscale ion trap mass spectrometer
abstract: A cold-cathode electron impact ionization source based on field emission from an array of diamond-coated silicon whiskers is described. The source is coupled to a microscale ion trap mass spectrometer (r0 = 0.50 mm, z0 = 0.50 mm). An electron beam of 250 nA could be obtained through the 0.45-mm diameter opening in the end cap electrode.
authors.affiliation: Oak Ridge National Laboratory, Tennessee 37831-6142, USA.
authors.initials: O
authors.lastname: Kornienko
authors.initials: PT
authors.lastname: Reilly
authors.initials: WB
authors.lastname: Whitten
authors.initials: JM
authors.lastname: Ramsey