title: Low energy ion counting efficiency of a Johnston electron multiplier.
abstract: We report a measurement of the absolute efficiency of a Johnston Laboratories MMl electron multiplier for detection of 2-4 keV Ne(+). The measured detection efficiency depends both on ion impact energy and on the magnitude and direction of an externally applied electric field near the first dynode.
authors.affiliation: Department of Space Physics and Astronomy, Rice University, Houston, Texas 77001, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Stickel
authors.forename: F G
authors.initials: FG
authors.lastname: Kellert
authors.forename: K A
authors.initials: KA
authors.lastname: Smith
authors.forename: F B
authors.initials: FB
authors.lastname: Dunning
authors.forename: R F
authors.initials: RF
authors.lastname: Stebbings