Abstract
AbstractThe thermoluminescence (TL) properties of CVD diamond film irradiated with β rays and illuminated with UV and visible light (200–450 nm) have been studied. The film (23 µm) was grown for 47 h on monocrystalline silicon. The TL glow curves are similar for β irradiation and short wavelength UV light. The β dose response curves and UV light time response curves exhibit linear–supralinear–sublinear behaviour. The structure of the glow curve was determined by a simultaneous deconvolution of a set of curves recorded after preliminary heating to various temperatures. One set of the TL peak parameters was found for all the curves during the deconvolution. The TL glow curves were found to consist of five strongly overlapped peaks. The peaks at about 350 and 400 K obey first‐order kinetics. The next three peaks at about 480, 540 and 580 K are described well by general‐order kinetics. The TL curves created with light of wavelength between 250 and 450 nm are different from those created by β radiation and short wavelength UV light. The former have low sensitivity and consist of several strongly overlapped peaks, two of them are observed at about 330 and 600 K.
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