Comparison of the Thermal Desorption Spectra and Exoemission Spectra of BeO:TiO2 and BeO:Li Thermally Stimulated Exoelectron Emission Detectors
✍ Scribed by Gábor Molnár; Sándor Gaál; Orsolya Kóréh; József Borossay
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 89 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0951-4198
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✦ Synopsis
In thermally stimulated exoelectron emission (TSEE) dosimetry the irradiation is generally executed in air while the read out is in methane. Under these conditions adsorption/desorption effects appear which influence the exoemission. BeO:Li and BeO:TiO 2 ceramics were compared from this point of view. The effect of adsorption/desorption was studied in such a way that in the cycles of irradiation/read-out the cooling down was executed successively in a methane atmosphere or in air. The TSEE curves of the BeO:TiO 2 ceramic were more influenced by the cooling atmosphere than those of the BeO:Li ceramic. In order to explain this result the thermal desorption spectra of these materials was taken.