ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
Recent literature has drawn a distinction between charging across the surface (lateral differential charging) and charging with depth (vertical differential charging) for insulating samples. In this study, differential charging in a bulk insulator was investigated using imaging and small-area spectra acquired with a monochromatic x-ray source. With no charge neutralization, reproducible photoelectron images and spectra could be acquired from a glass sample after ∽90 min of x-ray exposure. The charge shifts and photoelectron peak shapes vary as a function of x-ray flux on the sample, indicating that lateral charging is the dominant mechanism on a bulk insulator. Uniform binding energies, photoelectron peak shapes and images are acquired with the charge neutralizer on.
Additional Material:
13 Ill.
Type of Medium:
Electronic Resource
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