نتایج جستجو برای: tld700

تعداد نتایج: 9  

Journal: :basic and clinical cancer research 0
hoda darestani 1nuclear engineering department, science and research unit, azad university, tehran, i.r. iran hassan ali nedaie radiotherapy oncology department, cancer institute, tehran university of medical sciences, tehran, i.r. iran azim arbabi radiation oncology department, imam hussein medical center, faculty of medicine, shahid beheshti university of medical sciences, tehran, i.r. iran kheirollah mohammadi nuclear engineering department, amirkabir industrial university, tehran, i.r. iran mahmood allahverdi radiotherapy oncology department, cancer institute, tehran university of medical sciences, tehran, i.r. iran arjang shahvar agricultural, medical and industrial research school, karaj, i.r. iran

background : in spite of clinically useful photon and electron beams, high energy linacs produce secondary particles such as neutrons (photo-neutron production). neutrons have important roles during treatment with high energy photons in terms of protection and dose escalation. in this project, neutron dose equivalent of 18 mv varian accelerators is calculated by tld600 and tld700. materials and...

Journal: :Diagnostic and interventional radiology 2005
Niyazi Meriç Ulkü Rabia Yüce Erhan T Ilgit

PURPOSE The radiation dose to the lens of the eye, skin, thyroid and brain of patients who underwent diagnostic and interventional radiological procedures of the lacrimal drainage system have been measured with thermoluminescent dosimeters (TLD-100 and TLD-700) by using an adult male and female Rando phantom. All dose values for one second of fluoroscopic exposure and one frame of digital subtr...

2017
Michael P. R. Waligórski Robert Katz

Track theory has been applied to an earlier suggestion, that the supralinearity of TLDs at high gamma-ray doses is due to pre-existing 1-hit and 2-hit trap structures, to calculate high-LET response. Measured 60Co dose responses for peaks 5 and 6 in LiF (TLD700) were decomposed to yield parameters characterizing each peak as a two-component c-hit mixture. One value of “trap radius” was assigned...

ژورنال: سنجش و ایمنی پرتو 2020

In this study, the neutron and gamma doses in the dry channel and in the internal irradiation site of the Miniature Neutron Source research reactor (MNSR) has been calculated and measured. The MNSR reactor is a light water reactor with a maximum power of 30 kW and equipped with various irradiation facilities, including five irradiated sites, five irradiation sites and a dry channel. The interna...

ژورنال: :سنجش و ایمنی پرتو 0
محمدحسین چوپان دستجردی mohammad hosein choopan dastjerdi reactor research school, nuclear science and technology research institute, atomic energy organization of iran, end of north-kargar ave, tehran, iran.تهران-انتهای خیابان کارگر شمالی-پژوهشگاه علوم و فنون هسته ای حسین خلفی hosein khalafi reactor research school, nuclear science and technology research institute, atomic energy organization of iran, end of north-kargar ave, tehran, iran.تهران-انتهای خیابان کارگر شمالی-پژوهشگاه علوم و فنون هسته ای یاسر کاسه ساز yaser kasesaz reactor research school, nuclear science and technology research institute, atomic energy organization of iran, end of north-kargar ave, tehran, iran.تهران-انتهای خیابان کارگر شمالی-پژوهشگاه علوم و فنون هسته ای جواد امامی javad emami reactor research school, nuclear science and technology research institute, atomic energy organization of iran, end of north-kargar ave, tehran, iran.تهران-انتهای خیابان کارگر شمالی-پژوهشگاه علوم و فنون هسته ای حسین قدس hosein ghods reactor research school, nuclear science and technology research institute, atomic energy organization of iran, end of north-kargar ave, tehran, iran.تهران-انتهای خیابان کارگر شمالی-پژوهشگاه علوم و فنون هسته ای ارسلان عزتی arsalan ezzati reactor research school, nuclear science and technology research institute, atomic energy organization of iran, end of north-kargar ave, tehran, iran.تهران-انتهای خیابان کارگر شمالی-پژوهشگاه علوم و فنون هسته ای

برای دستیابی به یک باریکه­ ی نوترون حرارتی برای مقاصد پرتونگاری نوترونی، یک کولیماتور جدید نوترون در رآکتور تحقیقاتی تهران طراحی، نصب و مشخصه یابی شده است. رآکتور تحقیقاتی تهران، با قدرت 5 مگاوات از نوع استخرباز با کندکننده­ی آب سبک و دارای هفت بیم تیوب می­باشد. کولیماتور نوترونی، که قسمت مهمی از سیستم پرتونگاری نوترونی است، درون بیم تیوب شش اینچی e نصب شده است. طراحی کولیماتور با استفاده از کد...

ژورنال: سنجش و ایمنی پرتو 2016

In order to achieve a thermal neutron beam for neutron radiography applications, a new neutron collimator has been designed, installed and characterized at Tehran Research Reactor (TRR). TRR is a 5 MW, open pool and light water coolant reactor with seven beam tubes. Neutron collimator that is an important part of neutron radiography system was installed in the six inch E beam tube. Collimator d...

ژورنال: سنجش و ایمنی پرتو 2014

During the radiation therapy with electron beam, due to electron interaction and scattering from structures of the head of the medical linear accelerator, unwanted photons are produced. The main contribution of the photon contamination is resulted from the various components of the medical linear accelerator on the way of the high energy electron beam, and few percent is due to the interaction ...

2000
R. P. Stokes L. Talbot

This paper describes preliminary work to develop a cosmic-radiation dosemeter for use by military aircraft crew. The dosemeter is based on a combination of CR-39 etched-track detectors and TLD-700 thermoluminescent detectors. It is intended that the CR-39 be used to assess the neutron dose, while the TLD700 is used to assess the photon and charged particle dose. The sensitivity of CR-39 to the ...

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