title: Design of a laser-assisted tomographic atom probe at Münster University.
abstract: To benefit from the latest technical improvements in atom probe analysis, a new tomographic atom probe has been built at the University of Münster, Germany. The instrument utilizes a femtosecond laser system with a high repetition rate combined with the ability of using a micrometer-sized extraction electrode and a wide angle configuration. Since field evaporation is triggered by laser pulses instead of high-voltage pulses, the instrument offers the ability to expand the range of analyzed materials to poorly conducting or insulating materials such as oxides, glasses, ceramics, and polymeric materials. The article describes the design of the instrument and presents characterizing measurements on metals, semiconductors, and oxide ceramic.
authors.affiliation: Institute of Material Physics, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany. ralf.schlesiger@uni-muenster.de
authors.forename: Ralf
authors.initials: R
authors.lastname: Schlesiger
authors.forename: Christian
authors.initials: C
authors.lastname: Oberdorfer
authors.forename: Roland
authors.initials: R
authors.lastname: Würz
authors.forename: Gerd
authors.initials: G
authors.lastname: Greiwe
authors.forename: Patrick
authors.initials: P
authors.lastname: Stender
authors.forename: Michael
authors.initials: M
authors.lastname: Artmeier
authors.forename: Patrick
authors.initials: P
authors.lastname: Pelka
authors.forename: Frank
authors.initials: F
authors.lastname: Spaleck
authors.forename: Guido
authors.initials: G
authors.lastname: Schmitz