Abstract
he photolummescence and electron spin resonance properties of gamma irradiated (up to 500 kGy) porous silica are reported. By exciting at 5.6 eV a photoluminescence contribution can be detected before irradiation, peaked at about 4.1 eV. Gamma irradiation causes the generation of the E' centers (about 1 x 10(14) defects cm(-3)) of paramagnetic hole centers and modifies the photoluminescence properties of the sample: the emission amplitude decreases and three contributions can be singled out at about 3.3, 3.8 and 4.4 eV.
| Lingua originale | English |
|---|---|
| pagine (da-a) | 1784-1786 |
| Numero di pagine | 3 |
| Rivista | Journal of Non-Crystalline Solids |
| Volume | 351 |
| Stato di pubblicazione | Published - 2005 |
All Science Journal Classification (ASJC) codes
- ???subjectarea.asjc.2500.2504???
- ???subjectarea.asjc.2500.2503???
- ???subjectarea.asjc.3100.3104???
- ???subjectarea.asjc.2500.2505???