Bimorph Actuator: a New Instrument for Time-Resolved X-ray Diffraction and Spectroscopy
- 106 Downloads
A new approach to time-resolved X-Ray experiments implementation at both laboratory X-Ray sources and synchrotron facilities is presented. A time resolution of few milliseconds per one rocking curve measurement can be reached by using a new X-Ray optics element – vibrating bimorph actuator based on a bidomain bending-type crystal of lithium niobate. The ranges of X-Ray beam angular or energy changeover are defined by the actuator operational mode and resonant response. The time and spatial parameters for X-ray optical element based on bimorph actuator have been estimated. The ranges of actuator angular changeover in a dynamical mode at various frequencies (including resonance) of bidomain crystal vibrations have reached up to 100 arcseconds in а quasistatic mode and more than 500 arcseconds in а resonance mode at the control voltage of 22 V and vibration frequency up to 8 kHz (which corresponds to time resolution of 0.125 milliseconds). The numerical algorithms for processing of the experimental data measured using the bimorph optical element have been developed. The examples of X-Ray beam angular changeover reached in different actuator vibration modes and possible application of such approach are presented in the work.
KeywordsTime-resolved experiments X-ray diffraction Biomorphic actuator Bending X-ray optical element
Compliance with Ethical Standards
This work was supported by the Russian Foundation for Basic Research (Grant № 16-32-60045 mol_a_dk).
- 2.Irzhak D (2013) Piezoelectric strain coefficients in La3Ga5.3Ta0.5Al0.2O14 and Ca3TaGa3Si2O14 crystals. AIP Advances 3. doi: 10.1063/1.4824636
- 5.Gorfman S (2010) Time-resolved x-ray diffraction study of the piezoelectric crystal response to a fast change of an applied electric field. J Appl Phys 108. doi: 10.1063/1.3480996
- 16.Kinsler LE, Frey AR, Coppens AB, Sandlers JV (1982) Fundamentals of acoustics, 3rd edn. John Wiley&Sons, New YorkGoogle Scholar