Valutazione della dose di radiazioni ionizzanti e ultraviolette
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Lo scopo di questo studio � la valutazione della dose di radiazioni gamma-γ e ultraviolette-UV su rilevatori di tracce nucleari-NTD di tipo CR-39, Lexan e LR-115 attraverso la misurazione dell'assorbimento-A utilizzando la tecnica di spettroscopia UV-visibile e la misurazione della deviazione spettrale della tecnica di trasformata di Fourier nell'infrarosso-FTIR. La risposta alle radiazioni per i raggi gamma � stata misurata nell'intervallo di dosi basse da 1 Gy a 10 Gy e nell'intervallo di dosi elevate da 10 Gy a 195 kGy. Tutti i NTD utilizzati in questo studio hanno mostrato una risposta ai raggi gamma. I risultati hanno rivelato una risposta alle radiazioni gamma a dosi basse e elevate per i rivelatori Lexan e LR-115 utilizzando l'assorbimento ottico - A, mentre la risposta alle radiazioni per il rivelatore CR-39 appare solo nell'intervallo di dosi elevate. I risultati mostrano che l'assorbimento A aumenta con l'aumentare della dose di radiazioni gamma, dove � stato osservato che il rilevatore Lexan ha una risposta alle radiazioni molto migliore rispetto ai rilevatori CR-39 e LR-115 attraverso la misurazione dell'aumento del valore di assorbimento A alla lunghezza d'onda di 800 nm. Dai risultati di questo studio emerge la possibilit� di utilizzare i dosimetri NTD di tipo CR-39, Lexan e LR-115 come dosimetri per radiazioni gamma e UV in campo medico e ambientale.
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