Title :
Influence of electron and γ-irradiation on piezoelectric and elastic properties of langasite crystals
Author :
Blagov, A.E. ; Mansfeld, G.D. ; Mill, B.V. ; Pisarevsky, Yu.V. ; Skuratov, V.A. ; Vorochovsky, Ya L.
Author_Institution :
Inst. of Crystallogr., Russian Acad. of Sci., Moscow, Russia
Abstract :
First results of an experimental investigation of the electromechanical properties of langasite crystals irradiated with electron and γ-radiation are represented. Irradiation (with electrons and γ-rays) was carried out using an MT-25 FLNR JINR microtron experimental set-up. Samples were exposed at ambient conditions with 4 MeV electrons or bremsstrahlung γ-radiation produced by 9.7 MeV electrons on a tungsten target. The dose rate under γ-irradiation was in the range 3+5 Gy/s. The average electron beam flux was 2×1011 cm-2s-1. Total absorbed dose and electron fluence were 105 Gy and 8×1013 cm-2, respectively. A sharp increase of the Q-factor after electron irradiation and some decrease of the same parameter after γ-irradiation were found.
Keywords :
Q-factor; bremsstrahlung; elasticity; electron beam effects; electron radiation; gamma-ray effects; gamma-rays; lanthanum compounds; piezoelectric materials; piezoelectricity; γ-irradiation; 10E5 Gy; 4 MeV; 9.7 MeV; Q-factor; bremsstrahlung; elastic properties; electromechanical properties; electron irradiation; langasite crystals; microtron; piezoelectric properties; Crystallography; Crystals; Electron beams; Frequency measurement; Milling machines; Q factor; Resonance; Resonant frequency; Ultrasonic variables measurement; Vibration measurement;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418536
