Skip to Main content Skip to Navigation
Journal articles

Materials Applications of an Advanced 3-Dimensional Atom Probe

Abstract : An advanced 3-dimensional atom probe system has been constructed, based on an optical position-sensitive atom probe (OPoSAP) detector with energy compensation using a reflectron lens. The multi-hit detection capability of the OPoSAP leads to significant improvements in the efficiency of the instrument over the earlier serial position-sensing system. Further gains in efficiency are obtained by using a biassed grid in front of the detector to collect secondary electrons generated when ions strike the interchannel area. The improvement in detection efficiency gives enhanced performance in the studies of ordered materials and the determination of site occupation. Energy compensation leads to a much improved mass resolution (m/Δm full width at half maximum) making it possible to map out the 3-dimensional spatial distributions of all the elements in complex engineering alloys, even when elements lie close together in the mass spectrum. For example, in the analysis of a maraging steel, this allows separation between the 61Ni2+ and 92Mo3+ peaks, which are only 1/6 of a mass unit apart.
Document type :
Journal articles
Complete list of metadata

Cited literature [5 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/jpa-00254412
Contributor : Archives Journal de Physique Connect in order to contact the contributor
Submitted on : Monday, January 1, 1996 - 8:00:00 AM
Last modification on : Wednesday, February 17, 2021 - 10:28:18 AM
Long-term archiving on: : Thursday, May 20, 2010 - 7:05:12 PM

File

ajp-jp4199606C533.pdf
Explicit agreement for this submission

Identifiers

Collections

AJP

Citation

A. Cerezo, D. Gibuoin, S. Kim, S. Sijbrandij, F. Venker, et al.. Materials Applications of an Advanced 3-Dimensional Atom Probe. Journal de Physique IV Proceedings, EDP Sciences, 1996, 06 (C5), pp.C5-205-C5-210. ⟨10.1051/jp4:1996533⟩. ⟨jpa-00254412⟩

Share

Metrics

Record views

35

Files downloads

128