Time response of electron gun strain control of piezoelectric materials

Philip C. Hadinata; John A. Main

doi:10.1117/12.388839

22 June 2000 Time response of electron gun strain control of piezoelectric materials

Philip C. Hadinata, John A. Main

Proceedings Volume 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems; (2000) https://doi.org/10.1117/12.388839
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

In this paper the dynamic strain response of a piezoelectric material subjected to an electron beam charge input is examined. A piezoelectric material plate (PZT5h) was prepared with a single distributed electrode on one face and the second face subjected to a variety of electron beam inputs. Strain gages were attached atop the electrode to measure the strain response due to the combined effects of the electrode potential and the charge from the electron gun. When the electrode potential is stepped from 0 to 100 volts the strain needs only 1 second to reach steady state position, but when the electrode potential is stepped down it needs almost 1 minute to reach steady state. This phenomenon can be explained as follows: raising the electrode potential increases the energy of the electrons, so the secondary electron yield falls well below one and negative charge builds up quickly. Dropping the electrode potential decelerates the incoming beam, so the secondary yield becomes only slightly higher than one, so the negative charge decreases at a much lower rate, thus it takes longer to reach steady state.

Citation Download Citation

Philip C. Hadinata and John A. Main "Time response of electron gun strain control of piezoelectric materials", Proc. SPIE 3985, Smart Structures and Materials 2000: Smart Structures and Integrated Systems, (22 June 2000); https://doi.org/10.1117/12.388839

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