TY - JOUR

T1 - Bimorph Actuator

T2 - a New Instrument for Time-Resolved X-ray Diffraction and Spectroscopy

AU - Blagov, A. E.

AU - Kulikov, A. G.

AU - Marchenkov, N. V.

AU - Pisarevsky, Y. V.

AU - Kovalchuk, M. V.

N1 - Publisher Copyright: © 2017, The Society for Experimental Mechanics, Inc.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - 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.

AB - 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.

KW - Bending X-ray optical element

KW - Biomorphic actuator

KW - Time-resolved experiments

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=85028553350&partnerID=8YFLogxK

U2 - 10.1007/s40799-017-0194-1

DO - 10.1007/s40799-017-0194-1

M3 - Article

AN - SCOPUS:85028553350

VL - 41

SP - 517

EP - 523

JO - Experimental Techniques

JF - Experimental Techniques

SN - 0732-8818

IS - 5

ER -