Naslov
PTTL of TLD-100 and TLD-700 after irradiation with 14.5 MeV neutrons

Autori
Krpan, Katarina ; Miljanić, Saveta ; Blagus, Saša

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Program&Abstract Book, Tenth Symposium on Neutron Dosimetry, Progress in dosimetry of neutrons and light nuclei / - Uppsala : Uppsala University and EURADOS, 2006, 175-175

Skup
Tenth Symposium on Neutron Dosimetry, Progress in dosimetry of neutrons and light nuclei

Mjesto i datum
Uppsala, Švedska, 12.06.2006. - 16.06.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
PTTL; TLD-100; TLD-700; 14.5 MeV neutrons

Sažetak
In radiation dosimetry, phototransfered thermoluminescence (PTTL) found its use for dose reassessment. After a first dose evaluation by a normal TL measurement, the same dosemeter is subjected to the PTTL dose reassessment procedure with the intention of obtaining a new estimation by a completely independent measurement procedure. Recently, some experimental data indicate that PTTL could be used as a tool for dose discrimination in a mixed field using single TL detector. In this work, the characteristics of photoinduced thermoluminescence (PITL) and PTTL (after irradiation with 137Cs gamma rays) were determined using a Camag UV lamp (600  Wcm-2 for 254 nm) for TLD-100 and TLD-700 detectors. Subsequently, detectors were irradiated with 14.5 MeV neutrons produced by Texas Nuclear Corporation 300 keV electrostatic accelerator and PTTL was also determined in addition to TL. The results are given for 10 minutes exposure with 254 nm UV irradiation at room temperature. Detectors were at the distance of 17 cm from the lamp. Measured values for PITL were equivalent to 0.1 mGy and 0.05 mGy for TLD-100 and TLD-700, respectively. After gamma or neutron irradiation detectors were read out, then exposed to UV and read out again. From the second reading PITL was subtracted, the result was divided by the first reading and the relative PTTL values were obtained. In all irradiations the PTTL signal was more pronounced for TLD-100 detectors, but for both detectors the ratio of relative PTTL values for 14.5 MeV neutrons and that for gamma rays was approximately the same and equal to about 2.5. Difference in the sensitivity for neutrons of both signals, PTTL and TL, could be used for determination separately gamma and neutron component of the dose for TLD-100 as well as for TLD-700

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA