Publications

20 results for Helmut Poppa

The sticking coefficient of Pd on planar alumina supports
- - H Poppa
  - D Fargues
  - et al.
- 1990
- Vacuum
A novel approach to image processing in spin-polarized electron microscopy
- - T. VanZandt
  - R. Browning
  - et al.
- 1989
- Review of Scientific Instruments
Comparison with different existing techniques and suggestions for new methods
- - H. Poppa
- 1989
- Ultramicroscopy
Auger and electron energy loss spectroscopies of small palladium particles supported on (111) oriented MgO films
- - C.R. Henry
  - H. Poppa
- 1989
- Zeitschrift für Physik D Atoms, Molecules and Clusters
The determination of structure in small supported metal particles by scanning transmission electron diffraction
- - H. Poppa
  - R.D. Moorhead
  - et al.
- 1989
- Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Image processing enhancement of high-resolution TEM micrographs of nanometer-size metal particles
- - P. Artal
  - M. Avalos-Borja
  - et al.
- 1989
- Ultramicroscopy
Effect of substrate preparation on the structure and chemisorption properties of Pd/MgO model catalyst
- - C.R. Henry
  - H. Poppa
- 1988
- Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
The use of RF-plasma reactions for in-situ transmission electron microscopy studies
- - H. Poppa
  - R.D. Moorhead
- 1987
- Ultramicroscopy
Growth and properties of particulate Fe films vapor deposited in UHV on planar alumina substrates
- - H. Poppa
  - C.A. Papageorgopoulos
  - et al.
- 1986
- Zeitschrift für Physik D Atoms, Molecules and Clusters
The low-rate growth of particulate Fe on planar alumina supports
- - Helmut Poppa
  - C.A. Papageorgopoulos
  - et al.
- 1986
- Ultramicroscopy