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Université Jean Monnet – Saint-Etienne |  |
Conference papers
Raman measurements in silica glasses irradiated with energetic ions
Abstract : Energetic He+(2.5MeV), O4+(13.5MeV), Si4+(24.4MeV) and Cu7+ (32.6MeV) ion implantations at different fluences (from 5x1012 to 1.65x1015 ions/cm2) were performed in three types of SiO2 glasses with different OH content (KU1, KS-4V and Infrasil 301). After ion implantation the Raman spectra were measured and compared with the spectra of unirradiated samples. Irradiated samples of the three silica grades exhibit changes in the broad and asymmetric R-band (~445 cm-1) and in D1 (~491cm-1) and D2 (~605 cm-1) bands associated to small-membered rings, these bands for different ions show an increase with increasing deposited energy and fluences, indicating structural changes. Macroscopic surface cracking was detected for all the implanted species, mainly at fluences corresponding to deposited energies between 1023 eV/cm3 and 1024 eV/cm3 (after ion beam shutdown).
https://hal-ujm.archives-ouvertes.fr/ujm-01011563
Contributor : Sylvain Girard <>
Submitted on : Tuesday, June 24, 2014 - 10:26:30 AM
Last modification on : Monday, January 13, 2020 - 5:46:04 PM
Contributor : Sylvain Girard <>
Submitted on : Tuesday, June 24, 2014 - 10:26:30 AM
Last modification on : Monday, January 13, 2020 - 5:46:04 PM