The contributions of ionization energy losses and elastic collisions to radiation induced defect formation along the proton track were considered in quartz glasses irradiated by protons with different energies. It is shown that on a larger part of the proton track the color and luminescence center formation by means of recharging of the native defects is due to the ionization energy losses. Generation of structural defects like displaced atoms and their vacancies by elastic collisions with protons and recoil atoms dominates for proton energies < 5 MeV. At proton energies 10 MeV the color and luminescence center formation due to ionization energy losses prevails, and generation of the alumina-alkaline centers, causing an increase of the optical absorption at 550 nm and the thermoluminescence peak at 360 C and a band at 460 nm, occurs. At the proton energies Ep 10 MeV generation of the displaced atoms and their vacancies by elastic collisions dominates, leading to an increase of the E’-centers and to the destruction and transformation of the alumina-alkaline centers.
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Gulamova, R.R., Gasanov, E.M. & Alimov, R. Proton Induced Defect Formation in Quartz Glasses. MRS Online Proceedings Library 396, 429 (1995). https://doi.org/10.1557/PROC-396-429