RADIATION EFFECT ON THE ULTRASONIC-ATTENUATION AND INTERNAL-FRICTION OF TELLURITE GLASSES

The first measurements of radiation effect on the ultrasonic attenuati on in tellurite glasses have been carried out in the semiconducting te rnary tellurite glasses in the form 50TeO(2)-(50-x) V2O5-x-Ag2O where x = 5, 10, 15, 20, 25 wt.%. The ultrasonic attenuation coefficients ha ve been measured at the frequency 4 MHz and at room temperature. The i nternal friction inside these glasses has been calculated. Also, the e ffect of gamma-rays doses on the values of the internal friction has b een achieved through the doses 0.2, 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0 Gr ay. (C) 1998 Elsevier Science S.A.