Measurement of charge distribution in polymer electrets by a new pressure-pulse method |
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| Authors: | G M Sessler J E West R Gerhard |
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| Affiliation: | (1) Acoustics Research Department, Bell Telephone Laboratories, 07974 Murray Hill, NJ, USA;(2) Present address: Merckstrasse 25, D-6100 Darmstadt |
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| Abstract: | Summary The charge distribution in the thickness direction of 10 to 100  m thick polymer electrets can be determined with a new method utilizing a <1 ns laser pulse to launch a pressure pulse in the sample. Propagation of the pressure pulse through the film causes electrode currents which yield the charge distribution. The method has been applied to electron-beam charged PETP and FEP samples. |
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