این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
International Journal of Radiation Research، جلد ۱۲، شماره ۳، صفحات ۲۷۷-۲۸۲
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Production of a novel high strength heavy concrete using tourmaline and galena for neutron and photon radiation shielding
چکیده انگلیسی مقاله Background: High density concrete is extensively used for efficient radiation attenuation in radiotherapy rooms and nuclear reactors. Over the past eight years, some efficient galena-based concrete samples for shielding X or gamma rays was produced. The goal of this study was to produce a novel high density concrete against neutron and photon radiations using tourmaline and galena. Materials and Methods: Attenuation of gamma photons was measured using a Farmer type ionization chamber with a standard 60Co buildup cap on a Theratron 60Co therapy unit. Neutron shielding characteristics were measured by using an Am-Be source. The MCNP4C radiation transport computer code was used to investigate the effects of various shield thicknesses on the attenuation of gamma-ray photons and neutrons. Results: The concrete samples had a density of 4.0- 4.2 g/cm3. The compressive strength was 326 - 560 kg/cm2. The calculated value for Half Value Layer (HVL) of the tourmaline-galena concrete samples for 60Co gamma rays was 2.72 cm, which is much less than that of ordinary concrete (6.0 cm). The MC-derived HVL for photons with the same energy was 2.77 cm, which is in a good agreement with the experimental data. Moreover, ToGa concrete had up to 10 times greater neutron attenuation compared to that of the reference concrete. Conclusion: Tourmalin-Galena Concrete opens a new horizon in economic and efficient gamma/neutron shielding in high-energy radiotherapy bunkers, nuclear power plants, and shielding of radioactive sources.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله سید محمدرضا آقامیری | s m r aghamiri
radiation medicine department, shahid beheshti university, tehran, iran

سازمان اصلی تایید شده: دانشگاه شهید بهشتی (Shahid beheshti university)

سید محمد جواد مرتضوی | s m j mortazavi
medical physics department, school of medicine, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

محمدعلی مصلح شیرازی | m a mosleh shirazi
physics unit, radiotherapy department, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

m برادران قهفرخی | m baradaran ghahfarokhi
medical physics and medical engineering department, school of medicine, isfahan university of medical sciences, isfahan, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (Isfahan university of medical sciences)

f رحمانی | f. rahmani
department of physics, knt university of technology, tehran, iran


a امیری | a. amiri
chemical engineering department, new mexico state university, las cruces, new mexico, usa


s جریده بیدگلی | s. jarideh
ionizing and non-ionizing radiation protection research center, shiraz university of medical sciences, shiraz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شیراز (Shiraz university of medical sciences)

نشانی اینترنتی http://www.ijrr.com/browse.php?a_code=A-10-1-517&slc_lang=en&sid=en
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده فیزیک پزشکی
نوع مقاله منتشر شده مرور و بررسی کلی
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات