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NVV auger spectra from W(100)

Withrow, S. P. and Luscher, P. E. and Propst, F. M. and Weinberg, W. H. (1978) NVV auger spectra from W(100). Journal of Vacuum Science and Technology, 15 (2). pp. 511-517. ISSN 0022-5355. https://resolver.caltech.edu/CaltechAUTHORS:20120802-112540698

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Abstract

The NVV Auger spectrum from a clean W(100) surface has been measured in the second derivative, d^2N (E)/dE^2, mode to enhance fine structure. This measurement is compared with spectra generated from both the self‐convolution of the tungsten valence‐band bulk density of states (obtained from a relativistic APW energy band calculation) and a "restricted convolution" in which only transitions involving electrons from the same valence energy are allowed. The restricted convolution for a model of the Auger process in which both N_6VV and N_7VV transitions contribute offers the best match of theory and experiment. No distinct evidence of Auger emission involving the surface resonance present on W(100) is observed. Effects of H_2 and O_2 adsorption on the Auger spectrum of the W(100) surface are reported.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1116/1.569458DOIUNSPECIFIED
http://avspublications.org/jvst/resource/1/jvstal/v15/i2/p511_s1PublisherUNSPECIFIED
Additional Information:© 1978 American Vacuum Society. Received 19 September 1977; accepted 2 January 1978. The authors would like to express their appreciation to the staff of the Coordinated Science Laboratory for their support in the experimental phases of this work and to Dr. S. L. Cunningham for help in computation. This work was supported in part by the Joint Services Electronics Program (U.S. Army, Navy, and Air Force) under contract DAAB 07-72-C-0259.
Funders:
Funding AgencyGrant Number
Army/Navy and Air Force Joint Services Electronics ProgramDAAB 07-72-C-0259
Subject Keywords: TUNGSTEN, SURFACES, AUGER EFFECT, ADSORPTION, HYDROGEN, OXYGEN, BAND THEORY, ELECTRONIC STRUCTURE, FINE STRUCTURE, ENERGY SPECTRA, ELECTRON BEAMS
Issue or Number:2
Classification Code:PACS: 79.20.Fv, 82.65.My, 71.25.Pi, 68.43.-h, 71.20.-b
Record Number:CaltechAUTHORS:20120802-112540698
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120802-112540698
Official Citation:NVV Auger spectra from W(100) S. P. Withrow, P. E. Luscher, F. M. Propst, and W. H. Weinberg J. Vac. Sci. Technol. 15, 511 (1978); http://dx.doi.org/10.1116/1.569458
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32880
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:02 Aug 2012 18:42
Last Modified:03 Oct 2019 04:04

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