title: Work function measurements using a field emission retarding potential technique.
abstract: Herein we describe the measurement of the work function of a metal with advanced equipment based on the field emission retarding potential (FERP) method using a carbon nanotube (CNT) as cathode. The accuracy of the FERP method using a CNT emitter is described and a comparison between measurements of the work functions of aluminum, barium, calcium, gold, and platinum with published data will be presented. Our FERP equipment could be optimized with the aid of particle tracing simulations. These simulations led us to insert a magnetic collimator to improve the collection efficiency at the anode.
authors.affiliation: Center for Information Technology Renato Archer, D. Pedro I (SP - 65) Km 143.6, Campinas, SP 13069-901, Brazil.
authors.forename: M H M O
authors.initials: MH
authors.lastname: Hamanaka
authors.affiliation: Santa Catarina Federal University-Blumenau-SC, R. Pomerode 710, 89065-300 Blumenau, Brazil.
authors.forename: F F
authors.initials: FF
authors.lastname: Dall'Agnol
authors.affiliation: Center for Information Technology Renato Archer, D. Pedro I (SP - 65) Km 143.6, Campinas, SP 13069-901, Brazil.
authors.forename: V L
authors.initials: VL
authors.lastname: Pimentel
authors.affiliation: Center for Information Technology Renato Archer, D. Pedro I (SP - 65) Km 143.6, Campinas, SP 13069-901, Brazil.
authors.forename: V P
authors.initials: VP
authors.lastname: Mammana
authors.affiliation: School of Electrical and Computer Engineering, University of Campinas, Campinas, SP 13083-852, Brazil.
authors.forename: P J
authors.initials: PJ
authors.lastname: Tatsch
authors.affiliation: Centre for Phosphor and Display Materials, Wolfson Centre for Materials Processing, Brunel University London, Uxbridge, Middlesex UB8 3PH, United Kingdom.
authors.forename: D
authors.initials: D
authors.lastname: den Engelsen