Évaluation de la dose de rayonnement ionisant et ultraviolet
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L'objectif de cette �tude est d'�valuer la dose de rayonnement gamma (γ) et ultraviolet (UV) sur des d�tecteurs � traces nucl�aires (NTD) de type CR-39, Lexan et LR-115 en mesurant l'absorbance (A) � l'aide d'une technique de spectroscopie UV-visible et en mesurant la d�viation spectrale de la technique de transform�e de Fourier infrarouge (FTIR). La r�ponse aux rayons gamma a �t� mesur�e dans une gamme de doses faibles (1 Gy � 10 Gy) et dans une gamme de doses �lev�es (10 Gy � 195 kGy). Tous les NTD utilis�s dans cette �tude ont r�agi aux rayons gamma. Les r�sultats ont r�v�l� une r�ponse aux rayons gamma � des doses faibles et �lev�es pour les d�tecteurs Lexan et LR-115 � l'aide de l'absorbance optique (A), tandis que la r�ponse aux rayonnements pour le d�tecteur CR-39 n'appara�t que dans la gamme des doses �lev�es. Les r�sultats montrent que l'absorbance A augmente avec l'augmentation de la dose de rayonnement gamma, o� il a �t� observ� que le d�tecteur Lexan a une r�ponse au rayonnement bien meilleure que les d�tecteurs CR-39 et LR-115 gr�ce � la mesure de l'augmentation de la valeur d'absorbance A � la longueur d'onde de 800 nm. Les r�sultats de cette �tude ouvrent la voie � l'utilisation des d�tecteurs NTD de type CR-39, Lexan et LR-115 comme dosim�tres de rayonnement gamma et UV dans les domaines m�dical et environnemental.
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