English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Behavior of molecules and molecular ions near a field emitter

Gault, B., Saxey, D. W., Ashton, M. W., Sinnott, S. B., Chiaramonti, A. N., Moody, M. P., et al. (2016). Behavior of molecules and molecular ions near a field emitter. New Journal of Physics, 18: 033031. doi:10.1088/1367-2630/18/3/033031.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-D7AF-D Version Permalink: http://hdl.handle.net/21.11116/0000-0004-76E0-A
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Gault, Baptiste1, 2, Author              
Saxey, David W.3, Author              
Ashton, Michael W.4, Author              
Sinnott, Susan B.5, Author              
Chiaramonti, Ann N.6, Author              
Moody, Michael P.7, Author              
Schreiber, Daniel K.8, Author              
Affiliations:
1Department of Materials, University of Oxford, Parks Road, Oxford, UK, ou_persistent22              
2Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863384              
3Advanced Resource Characterisation Facility & John de Laeter Centre, Curtin University, Perth, Western Australia 6102, Australia, ou_persistent22              
4Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6400, USA, ou_persistent22              
5Materials Science and Engineering, Pennsylvania State University, State College, PA 16802, USA, ou_persistent22              
6Material Measurement Laboratory, National Institute of Standards and Technology, Boulder, CO 80305, USA, ou_persistent22              
7Department of Materials, University of Oxford, Parks Road, Oxford OX13PH, UK, ou_persistent22              
8Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA, ou_persistent22              

Content

show
hide
Free keywords: field evaporation, field ionization, atom probe tomography (APT), molecular dissociation
 Abstract: The cold emission of particles from surfaces under intense electric fields is a process which underpins a variety of applications including atom probe tomography (APT), an analytical microscopy technique with near-atomic spatial resolution. Increasingly relying on fast laser pulsing to trigger the emission, APT experiments often incorporate the detection of molecular ions emitted from the specimen, in particular from covalently or ionically bonded materials. Notably, it has been proposed that neutral molecules can also be emitted during this process. However, this remains a contentious issue. To investigate the validity of this hypothesis, a careful review of the literature is combined with the development of new methods to treat experimental APT data, the modeling of ion trajectories, and the application of density-functional theory simulations to derive molecular ion energetics. It is shown that the direct thermal emission of neutral molecules is extremely unlikely. However, neutrals can still be formed in the course of an APT experiment by dissociation of metastable molecular ions.

Details

show
hide
Language(s): eng - English
 Dates: 2016-02-072016-03-012016-032016-03-18
 Publication Status: Published in print
 Pages: 16
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1088/1367-2630/18/3/033031
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 18 Sequence Number: 033031 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: /journals/resource/954926913666