Thermoluminescence response of aluminum oxide thin films to beta-particle and UV radiation
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| Format: | Artículo científico |
| Language: | en |
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Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.
2001
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| _version_ | 1876488148025868288 |
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| author | J. E. Villarreal |
| author_facet | J. E. Villarreal |
| contents | Thermoluminescence response of aluminum oxide thin films to beta-particle and UV radiation J. E. Villarreal P.R. González E. Villagrán E. Camps L. Escobar M. Barboza Flores Física, Astronomía y Matemáticas Thin films Thermoluminescence Low penetrating radiation Pulsed Laser Deposition Aluminium oxide thin films (0.3 m) were grown by laser ablation from an Al2O3 crystal disk. The thin films were deposited on pieces of silicon (100) wafers. The structural characterization revealed the growth of an amorphous material. Surface morphology of the obtained thin films show a smooth surface with dispersed splashed particles with diameters ranging from approximately 0.2 m to 5 m. The films were exposed to UV (254 nm) and beta-particle radiation (90Sr-90Y). Thermoluminescence glow curves exhibited two peaks centered at 95 and 162 °C for UV irradiation. For beta-particle irradiation the thermoluminescence glow curve shows only the presence of the high temperature peak. The 162 °C peak shows good stability and 10% fading in the first 4 days after irradiation. A linear relationship between absorbed dose and the thermoluminescence response up to 20 Gy was observed for beta-particle irradiation. The thermoluminescence parameters obtained showed a second order kinetics and an activation energy of 1.2 eV for the 162 °C peak. These properties make aluminum oxide thin films potentially attractive as an ultra-thin dosimeter for UV and beta-particle radiation. PACS: 78.60.Kn, 81.15.Fg 2001 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94201330 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.13 |
| format | Artículo científico |
| id | redalyc_94201330 |
| institution | Redalyc |
| language | en |
| publishDate | 2001 |
| publisher | Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. |
| spellingShingle | Thermoluminescence response of aluminum oxide thin films to beta-particle and UV radiation J. E. Villarreal Física, Astronomía y Matemáticas Thin films Thermoluminescence Low penetrating radiation Pulsed Laser Deposition Thermoluminescence response of aluminum oxide thin films to beta-particle and UV radiation J. E. Villarreal P.R. González E. Villagrán E. Camps L. Escobar M. Barboza Flores Física, Astronomía y Matemáticas Thin films Thermoluminescence Low penetrating radiation Pulsed Laser Deposition Aluminium oxide thin films (0.3 m) were grown by laser ablation from an Al2O3 crystal disk. The thin films were deposited on pieces of silicon (100) wafers. The structural characterization revealed the growth of an amorphous material. Surface morphology of the obtained thin films show a smooth surface with dispersed splashed particles with diameters ranging from approximately 0.2 m to 5 m. The films were exposed to UV (254 nm) and beta-particle radiation (90Sr-90Y). Thermoluminescence glow curves exhibited two peaks centered at 95 and 162 °C for UV irradiation. For beta-particle irradiation the thermoluminescence glow curve shows only the presence of the high temperature peak. The 162 °C peak shows good stability and 10% fading in the first 4 days after irradiation. A linear relationship between absorbed dose and the thermoluminescence response up to 20 Gy was observed for beta-particle irradiation. The thermoluminescence parameters obtained showed a second order kinetics and an activation energy of 1.2 eV for the 162 °C peak. These properties make aluminum oxide thin films potentially attractive as an ultra-thin dosimeter for UV and beta-particle radiation. PACS: 78.60.Kn, 81.15.Fg 2001 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94201330 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.13 |
| title | Thermoluminescence response of aluminum oxide thin films to beta-particle and UV radiation |
| topic | Física, Astronomía y Matemáticas Thin films Thermoluminescence Low penetrating radiation Pulsed Laser Deposition |
| url | https://www.redalyc.org/articulo.oa?id=94201330 |