Possibilities of Creating X-Ray Acoustic Elements from Bi-Phthalate Family Crystals with Thickness Vibrations

Peculiarities of X-ray beam diffraction from potassium and rubidium bi-phthalate piezo crystals under the condition of excitation of transverse ultrasonic vibrations are investigated. Previously, under a similar influence in quartz crystals, the effect of X-ray acoustic redistribution was observed, in which the intensity of diffracted radiation in the exact Bragg position increases significantly with a simultaneous decrease in the intensity of the transmitted beam, down to zero for certain parameters for reflecting atomic planes, called the full pumping effect. This effect can be used for controlled tuning of the diffracted beam intensity. In this work, to search for new materials for the creation of elements that allow such a rearrangement, we studied the dependences of the degree of amplification of diffracted radiation on the amplitude of the control signal for potassium and rubidium bi-phthalates crystals. The actual possibility of X-ray intensity modulation using transverse vibrations in these crystals is demonstrated.