Dynamics of pyroelectric accelerators.

Authors :: Ghaderi, R.
Davani, F. Abbasi
Source :: Applied Physics Letters; 1/26/2015, Vol. 106 Issue 4, p1-4, 4p, 2 Diagrams, 5 Graphs
Publication Year :: 2015
Abstract: Pyroelectric crystals are used to produce high energy electron beams. We have derived a method to model electric potential generation on LiTaO<subscript>3</subscript> crystal during heating cycle. In this method, effect of heat transfer on the potential generation is investigated by some experiments. In addition, electron emission from the crystal surface is modeled by measurements and analysis. These spectral data are used to present a dynamic equation of electric potential with respect to thickness of the crystal and variation of its temperature. The dynamic equation's results for different thicknesses are compared with measured data. As a result, to attain more energetic electrons, best thickness of the crystals could be extracted from the equation. This allows for better understanding of pyroelectric crystals and help to study about current and energy of accelerated electrons. [ABSTRACT FROM AUTHOR]