Photoelectron holography of platinum (111)

Conference · Thu Apr 01 04:00:00 EST 1993

OSTI ID:139780

Petersen, B L ^[1]; Terminello, L J ^[2]; Barton, J J ^[3]; Shirley, D A ^[4]

---

1. Lawrence Berkeley Lab., CA (United States)
2. Lawrence Livermore National Lab., CA (United States)
3. International Business Machines Corp., Yorktown Heights, NY (United States). Thomas J. Watson Research Center
4. Pennsylvania State Univ., University Park, PA (United States)

Platinum atoms near a (111) single-crystal face have been imaged using photoelectron holography. Electron angular intensity patterns were collected at equally spaced wavenumbers from 6 to 12{Angstrom}{sup {minus}1}. Images of atoms near expected atomic positions are obtained from single-wavenumber analyses over the range of the data set. Positions are detected further from the emitter than we have seen previously, and symmetry assumptions are not required. We have also adopted a three dimensional means of representing the data in order to help understand the results. Twin image suppression and artifact reduction in the holographically reconstructed data are set are obtained when images at different wavenumbers are correctly phase-summed. We are assessing the capability of the technique for rendering true three-dimensional structural information for unknown systems.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48; AC03-76SF00098; AC02-76CH00016
• OSTI ID: 139780
• Report Number(s): UCRL-JC--113802; LBL--34563; CONF-930405--41; ON: DE93040856
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DATA ANALYSIS
ELECTRON EMISSION
HOLOGRAPHY
MONOCRYSTALS
PHOTOEMISSION
PLATINUM
SURFACE PROPERTIES