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Proceedings Paper

Pulsed electro-acoustic (PEA) measurements of embedded charge distributions
Author(s): J. R. Dennison; Lee H. Pearson
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Paper Abstract

Knowledge of the spatial distribution and evolution of embedded charge in thin dielectric materials has important applications in semiconductor, high-power electronic device, high-voltage DC power cable insulation, high-energy and plasma physics apparatus, and spacecraft industries. Knowing how, where, and how much charge accumulates and how it redistributes and dissipates can predict destructive charging effects. Pulsed Electro-acoustic (PEA) measurements— and two closely related methods, Pressure Wave Propagation (PWP) and Laser Intensity Modulation (LIMM)— nondestructively probe such internal charge distributions. We review the instrumentation, methods, theory and signal processing of simple PEA experiments, as well as the related PPW and LIMM methods. We emphasize system improvements required to achieve high spatial resolution for in vacuo measurements of thin dielectrics charged using electron beam injection.

Paper Details

Date Published: 24 September 2013
PDF: 11 pages
Proc. SPIE 8876, Nanophotonics and Macrophotonics for Space Environments VII, 887612 (24 September 2013); doi: 10.1117/12.2025667
Show Author Affiliations
J. R. Dennison, Utah State Univ. (United States)
Lee H. Pearson, Box Elder Innovations, LLC (United States)


Published in SPIE Proceedings Vol. 8876:
Nanophotonics and Macrophotonics for Space Environments VII
Edward W. Taylor; David A. Cardimona, Editor(s)

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