The objectives achieved in the second year of the project are: (1) analysis of the stability with time after irradiation, environmental temperature and light of the materials in study has been performed and methods to control the recombination kinetics of paramagnetic and of luminescent centers have been developed. (2) dosimetric properties such as reproducibility of the radiation induced signal intensity linear response in dose below 10 Gy have been studied and simulation parameters for signal fitting has been implemented to distinguish the radiation from the background signals. (3) Some paramagnetic species to be used as radiation markers in fingernails, hair and textile fibers have been characterized. The significant amount of work is reported in the following publications, accepted for publication and available on line:
E. Bortolin, C. Boniglia, S. Della Monaca, R. Gargiulo and P. Fattibene. Silicates collected from personal objects as a potential fortuitous dosimeter in radiological emergency. Radiation Measurements.doi:10.1016/j.radmeas.2011.03.030
D. Viscomi, C. De Angelis and P. Fattibene. Cotton as fortuitous dosimeter in radiological emergency: An EPR preliminary study Radiation Measurements doi:10.1016/j.radmeas.2011.03.032
F. Trompier, S. Della Monaca, P. Fattibene and I. Clairand. EPR dosimetry of glass substrate of mobile phone LCDs. Radiation Measurements doi:10.1016/j.radmeas.2011.03.033
Maurizio Marrale, Anna Longo, Maria Cristina D'Oca, Antonio Bartolotta and Maria Brai. Watch glasses exposed to 6 MV photons and 10 MeV electrons analysed by means of ESR technique: a preliminary study. Radiation Measurements doi:10.1016/j.radmeas.2011.05.003
Furthermore, the following work has been orally presented at the EPRBioDose conference (Mandelieu La Napoule, Francia, 10-14 ottobre 2010, di cui l’INFN):
D. Dondi, A. Buttafava, A. Faucitano and P. Fattibene. Basic radical reaction mechanisms in mechanolysis and radiolysis of nails.