نتایج جستجو برای: LiF, Mg, and Ti

تعداد نتایج: 16859952  

سیده سپیده امینی, , فلامرز ترک زاده, , مانفرد فوگر, ,

Thermoluminescence TL materials LiF(Mg,Cu2+) and LiF(Cu2+) were produced in powder. Their 3D emission spectra were investigated and compared to the commercially available LiF(Mg,Cu2+,P) and (LiF(Mg,Ti) TL materials. Emission spectrum of LiF(Mg,Cu2+) represents a peak maximum at 450 nm with a wide shoulder ranging from 520 nm to infrared area. Emission peak of LiF(Cu2+) is situated at 380 nm and...

Journal: :journal of biomedical physics and engineering 0
m sadeghi radiation research center, shiraz university, shiraz, iran s sina nuclear engineering department, school of mechanical engineering, shiraz university, shiraz, iran r faghihi nuclear engineering department, school of mechanical engineering, shiraz university, shiraz, iran

lif, mg and ti cubical tld chips (known as tld-100) are widely used for dosimetry purposes. the repeatability of tl dosimetry is investigated by exposing them to doses of (81, 162 and 40.5 mgy) with 662kev photons of cs-137. a group of 40 cubical tld chips was randomly selected from a batch and the values of element correction coefficient (ecc) were obtained 4 times by irradiating them to doses...

M Sadeghi, R Faghihi S Sina,

LiF, Mg and Ti cubical TLD chips (known as TLD-100) are widely used for dosimetry purposes. The repeatability of TL dosimetry is investigated by exposing them to doses of (81, 162 and 40.5 mGy) with 662keV photons of Cs-137. A group of 40 cubical TLD chips was randomly selected from a batch and the values of Element Correction Coefficient (ECC) were obtained 4 times by irradiating them to doses...

2015
M. Sadeghi S. Sina R. Faghihi

LiF, Mg and Ti cubical TLD chips (known as TLD-100) are widely used for dosimetry purposes. The repeatability of TL dosimetry is investigated by exposing them to doses of (81, 162 and 40.5 mGy) with 662keV photons of Cs-137. A group of 40 cubical TLD chips was randomly selected from a batch and the values of Element Correction Coefficient (ECC) were obtained 4 times by irradiating them to doses...

ژورنال: :پژوهش فیزیک ایران 0
خیرا... محمدی kh mohammadi رسول صراف ماموری r sarraf maamory رضا محمدی r mohammadi علی موسوی زرندی a mosavi zarandi

دزیمترهای ترمولومینسانس، قرص های کوچکی هستند که برای اندازه گیری دز دریافتی ناشی از پرتوهای مختلف رادیواکتیو مورد استفاده قرار می گیرند. معمول ترین آنها دزیمتر tld-100 بوده که از خانواده فلوراید- لیتوم و حاوی ناخالصی های منیزیوم و تیتانیوم می باشد. در این تحقیق، ابتدا پودر فلوراید- لیتیوم با ناخالصی منیزیوم و تیتانیوم مخلوط شده و سپس پرس شدند و در ادامه نمونه ها به مدت زمان مشخص و تحت فشار کنتر...

صراف‌ماموری, رسول, محمدی, خیرا..., محمدی, رضا, موسوی‌زرندی, علی,

Thermoluminescence dosimeters are small tablets used with 3. 2*3. 2*0. 9mm^3 for measurement of received dose from radioactive various beams. The most common dosimeter is TLD-100 which is lithium-fluoride family and this dosimeter contain magnesium impurities. In this study, first lithium-flouride powder was mixed with titanium and controlled atmosphere samples were heated. After measuring ...

Introduction: LiF dosimeter has the most application in medicine. This study aimed to evaluate some dosimetric properties of a novel LiF: Mg, Ti. Materials and Methods: An ELEKTA Precise linear accelerator was used to calibrate dosimeters at 6 MV. In this survey, responses of dosimeters were evaluated up to 1000 cGy. Background effect was investigated in two different dosimeter states includin...

Journal: :Spine 2016
Shimei Tanida Shunsuke Fujibayashi Bungo Otsuki Kazutaka Masamoto Yoshimitsu Takahashi Takeo Nakayama Shuichi Matsuda

STUDY DESIGN The bone union rate after lumbar interbody fusion (LIF) using titanium (Ti) or polyetheretherketone (PEEK) cages was investigated retrospectively. OBJECTIVE To assess whether the PEEK cage is superior to the Ti cage in terms of bone union after LIF. SUMMARY OF BACKGROUND DATA We previously reported that the formation of vertebral endplate cysts is useful for predicting nonunion...

Journal: :Instruments and Experimental Techniques 2023

Abstract— A technique for studying the spatial structure of hybrid X-pinch plasma objects in X-ray range is described, and main experimental results are presented. The spectral characteristics sources have been measured. investigations carried out using thermoluminescent detectors based on lithium fluorides LiF(Mg, Ti).

Journal: :journal of biomedical physics and engineering 0
f mianji s baradaran

background : sensitivity is an important dosimetric issue particularly in personal dosimetry where the range of doses is often very low to medium. in-service aging is assumed to be of negligible effect on the response of thermoluminescent dosimeters (tld), consequently, some service providers may mix fresh tlds to in-use ones and simply normalize the readings of tlds through batch calibration. ...

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