期刊
RADIATION EFFECTS AND DEFECTS IN SOLIDS
卷 160, 期 9, 页码 383-390出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10420150500459999
关键词
thermoluminescence; glow curve; trap parameters; various heating rates method
The Hoogenstraaten method is a technique that uses various heating rates for obtaining the activation energy E (eV) in the case of first-order thermoluminescence glow peaks. This method can also be used for obtaining E (eV) for all types of glow peaks regardless of their kinetics order (b). The present work shows that the intercept of the Hoogenstraaten relation, which is usually used for obtaining the frequency factor S (s(-1)) of the first-order glow peak, can be used as a very good approximation to obtain the pre-exponential factor S''(s(-1)) in the case of general-order glow peaks, when one uses Hoogenstraatens method to obtain E (eV). In addition, the present work suggests a numerical method for obtaining the kinetics order of the general-order glow peak. The method depends on the activation energy E (eV) obtained by the Hoogenstraaten method and the above-mentioned approximation for obtaining the pre-exponential factor S''(s(-1)). An independent evaluation of the suggested methods for obtaining the trap parameters, the activation energy E (eV), the pre-exponential factor S''(s(-1)) and the kinetics order (b) is illustrated here by taking a numerically computed glow peak and applying a one-trap and one-recombination-center model.
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