Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 517335

Dose reassessment of LiF:Mg, Ti detectors in the mixed fields


Miljanić, Saveta; Bibić, Juraj; Blagus, Saša; Mihaljević, Branka; Vekić, Branko
Dose reassessment of LiF:Mg, Ti detectors in the mixed fields // Radiation measurements, 46 (2011), 12; 1586-1589 doi:10.1016/j.radmeas.2011.05.065 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 517335 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Dose reassessment of LiF:Mg, Ti detectors in the mixed fields

Autori
Miljanić, Saveta ; Bibić, Juraj ; Blagus, Saša ; Mihaljević, Branka ; Vekić, Branko

Izvornik
Radiation measurements (1350-4487) 46 (2011), 12; 1586-1589

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
neutron dosimetry ; mixed field dosimetry ; thermoluminescence dosimeters ; PTTL ; TLD-100 ; TLD-700

Sažetak
Phototransfered thermoluminescence (PTTL) found its use in radiation dosimetry for dose reassessment primarily in photon radiation fields. After the dose has first been evaluated by a “normal” thermoluminescence (TL) measurement, the same detector is subjected to the PTTL dose reassessment procedure providing a new estimation by an independent measurement procedure. PTTL also gives a new possibility for a dose reassessment and for separate dose determination in the mixed fields. It was shown in our previous papers that it is possible to determine separately gamma and neutron dose components with a single detector due to different sensitivities of TL and subsequent PTTL to neutrons in comparison to gamma rays. The main disadvantage, the low sensitivity of both, TL and PTTL, to neutrons restricts the use only for the case of radiation accident. In this work we have investigated the possibilities of improvement the sensitivities of PTTL by heating the samples during UV irradiation and by using the sensitization technique involving a “pre-dose” followed by annealing. Two types of LiF:Mg, Ti detectors, TLD-100 and TLD-700, were examined by irradiation in 137Cs gamma ray field and with neutrons of 14.5 MeV. After UV irradiation at different temperatures, PTTL increases reaching the values 2.1 and 2.5 times higher at 90C than that at 25C for TLD-100 and TLD-700 respectively. Increasing level is approximately the same for gamma rays and neutrons. After sensitization, TL signal is one half of that before sensitization. PTTL signal has increased 11 times for gamma rays and 5 times for neutrons at 25C with significant increase with increasing temperature during UV irradiation.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

Napomena
Rad je prezentiran na skupu 16th Solid State Dosimetry Conference, održanom od September 19.-24.09.2011.g., Sydney, Australija ; Anatoly Rosenfeld, Tomas Kron, Francesco d'Errico (ur.).



POVEZANOST RADA


Projekt / tema
098-0982904-2954 - Fizičko-kemijski učinci ionizirajućih zračenja u materijalima (Branka Mihaljević, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Saveta Miljanić (autor)

Avatar Url Saša Blagus (autor)

Avatar Url Branka Mihaljević (autor)

Avatar Url Branko Vekić (autor)

Citiraj ovu publikaciju

Miljanić, Saveta; Bibić, Juraj; Blagus, Saša; Mihaljević, Branka; Vekić, Branko
Dose reassessment of LiF:Mg, Ti detectors in the mixed fields // Radiation measurements, 46 (2011), 12; 1586-1589 doi:10.1016/j.radmeas.2011.05.065 (međunarodna recenzija, članak, znanstveni)
Miljanić, S., Bibić, J., Blagus, S., Mihaljević, B. & Vekić, B. (2011) Dose reassessment of LiF:Mg, Ti detectors in the mixed fields. Radiation measurements, 46 (12), 1586-1589 doi:10.1016/j.radmeas.2011.05.065.
@article{article, year = {2011}, pages = {1586-1589}, DOI = {10.1016/j.radmeas.2011.05.065}, keywords = {neutron dosimetry, mixed field dosimetry, thermoluminescence dosimeters, PTTL, TLD-100, TLD-700}, journal = {Radiation measurements}, doi = {10.1016/j.radmeas.2011.05.065}, volume = {46}, number = {12}, issn = {1350-4487}, title = {Dose reassessment of LiF:Mg, Ti detectors in the mixed fields}, keyword = {neutron dosimetry, mixed field dosimetry, thermoluminescence dosimeters, PTTL, TLD-100, TLD-700} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati