title: Development of a compact electron ion coincidence analyzer using a coaxially symmetric mirror electron energy analyzer and a miniature polar-angle-resolved time-of-flight ion mass spectrometer with four concentric anodes.
abstract: A compact electron ion coincidence (EICO) analyzer that uses a coaxially symmetric mirror electron energy analyzer and a miniature polar-angle-resolved time-of-flight ion mass spectrometer with four concentric anodes was developed for surface science and surface analysis. The apparatus is especially useful in the study of ion desorption stimulated by an Auger process because information on the mass, yield, desorption polar angle, and kinetic energy of ions can be obtained for the selected core-ionization-final-states or the selected Auger-final-states. The analyzer can be used also for analysis of the configuration of specific surface molecules because the desorption polar angles reflect the direction of surface bonds. The EICO analyzer was evaluated by measuring polar-angle-resolved-ion yield spectra and coincidence spectra of Auger-electron and polar-angle-resolved H(+) from condensed water.
authors.affiliation: Institute of Materials Structure Science, KEK, 1-1 Oho, Tsukuba 305-0801, Japan. kobayashi@saga-ls.jp
authors.forename: Eiichi
authors.initials: E
authors.lastname: Kobayashi
authors.forename: Akira
authors.initials: A
authors.lastname: Nambu
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Mase
authors.forename: Kouji
authors.initials: K
authors.lastname: Isari
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Tanaka
authors.forename: Masanobu
authors.initials: M
authors.lastname: Mori
authors.forename: Koji K
authors.initials: KK
authors.lastname: Okudaira
authors.forename: Nobuo
authors.initials: N
authors.lastname: Ueno