Taurine-EVA copolymer-paraffin rods dosimeters for EPR high-dose radiation dosimetr

• Autorzy: Maghraby A. M. , Mansour A. , Abdel-Fattah A. A.

Identyfikatory

DOI

10.2478/nuka-2014-0005

• Języki publikacji: EN

Abstrakty

EN

Taurine/EPR rods (3 × 10 mm) have been prepared by a simple technique in the laboratory where taurine powder was mixed with a molten mixture of paraffin wax and an ethylene vinyl acetate (EVA) copolymer. The binding mixture EVA/Paraffin does not present interference or noise in the EPR signal before or after irradiation. The rods show good mechanical properties for safe and multi-use handling. An EPR investigation of radiation induced radicals in taurine rods revealed that there are two types of radicals produced after exposure to gamma radiation (60Co). EPR spectra were recorded and analyzed – also the microwave power saturation and modulation amplitude were studied and optimized. Response of taurine to different radiation doses (1.5–100 kGy) was studied and found to follow a linear relationship up to 100 kGy. Radiation induced radicals in taurine persists and showed a noticeable stability over 94 days following irradiation. Uncertainities associated with the evaluation of radiation doses using taurine dosimeters were discussed and tabulated. It was found that taurine possesses good dosimetric properties using EPR spectroscopy in high doses in addition to its simple spectrum.

Słowa kluczowe

EN

EPR; ESR; radiation dosimetry; taurine; alanine

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2014
• Tom: Vol. 59, No. 1
• Strony: 9--13
• Opis fizyczny: Bibliogr. 21 poy., rys.

Twórcy

autor

Maghraby A. M.

• Radiation Dosimetry Department, National Institute of Standards (NIS), 12211 Tersa Str., Haram-Giza, P.O. Box 136, Egypt and Faculty of Science and Humanities, Physics Department, Salman bin Abdulaziz University, Alkharj, Saudi Arabia, Tel.: [phone], Fax: [phone]

autor

Mansour A.

• National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City 11371, P. O. Box 8029, Cairo, Egypt

autor

Abdel-Fattah A. A.

• National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City 11371, P. O. Box 8029, Cairo, Egypt

Bibliografia

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