نتایج جستجو برای: optical properties photoluminescencethermoluminescence nuclear radiation detection

تعداد نتایج: 2021035  

ژورنال: پیاورد سلامت 2018
آقایی, عاطفه, صادقی, حسین, علیزاده, مریم, چنگیزی, وحید, یزدانمهر, محسن,

Background and Aim: Today, OSL (Optically Stimulated Luminescence) dosimetry system based on optical stimulation, includes systems that can meet many requirements for radiation protection in the field of medicine and space.  The Calcium Sulfide (CaS) is one of the earth's alkaline sulfide materials which can be used as a detector in this system. In this research, some of the dosimetry propertie...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2016
Travis M Shaffer Charles Michael Drain Jan Grimm

Nuclear medicine uses ionizing radiation for both in vivo diagnosis and therapy. Ionizing radiation comes from a variety of sources, including x-rays, beam therapy, brachytherapy, and various injected radionuclides. Although PET and SPECT remain clinical mainstays, optical readouts of ionizing radiation offer numerous benefits and complement these standard techniques. Furthermore, for ionizing ...

Journal: :Nature communications 2014
P Siyushev K Xia R Reuter M Jamali N Zhao N Yang C Duan N Kukharchyk A D Wieck R Kolesov J Wrachtrup

Rare-earth-doped crystals are excellent hardware for quantum storage of photons. Additional functionality of these materials is added by their waveguiding properties allowing for on-chip photonic networks. However, detection and coherent properties of rare-earth single-spin qubits have not been demonstrated so far. Here we present experimental results on high-fidelity optical initialization, ef...

Journal: :Physical review letters 2006
Thomas J Bürvenich Jörg Evers Christoph H Keitel

The direct interaction of nuclei with superintense laser fields is studied. We show that present and upcoming high-frequency laser facilities, especially together with a moderate acceleration of the target nuclei to match photon and transition frequency, do allow for resonant laser-nucleus interaction. These direct interactions may be utilized for the model-independent optical measurement of nu...

2014
Zhonghuan Zhang Fei Hua Ting Liu Yong Zhao Jun Li Ruifu Yang Changxi Yang Lei Zhou

Cylindrical or taper-and-cylinder combination optical fiber probe based on evanescent wave has been widely used for immunofluorescence biosensor to detect various analytes. In this study, in contrast to the contradiction between penetration depth and analyte diameter of optical fiber probe-based evanescent wave, we demonstrate that double-taper optical fiber used in a radiation wave-based all-f...

Journal: :بینا 0
علی اصغر بهنام قادر aa behnamghader po box: 14155-4777کرج- پژوهشگاه مواد و انرژی- صندوق پستی 4777-14155 افروز لطیفی a latifi دانشگاه آزاد اسلامی- واحد علوم و تحقیقات ریحانه نقابت شیرازی r neghabat-shirazi دانشگاه آزاد اسلامی- واحد علوم و تحقیقات حیدر سیاتیری h siatiri دانشگاه علوم پزشکی تهران

purpose: to compare the optical properties of hydrophilic and hydrophobic intraocular lenses (iols) containing uv-absorber and to determine their chemical composition. methods: optical properties of different foldable hydrophilic and hydrophobic as well as non-foldable hydrophobic polymethylmetacrylate (pmma) iols were evaluated in three powers of 15, 22 and 25 diopters. optical properties were...

In the present study, the most useful stainless steels of in nuclear industry, i.e. 304, 304L and 316L were provided and laser cut into 0.5*0.5 cm dimension. The effect of radiation on physical properties of samples were investigated. Gamma irradiation on samples was done with a 60Co radioisotope to the doses of 100 and 200 kGy. The resistance of the samples was measured through the Four-Probe ...

Mehdizadeh, Alireza, Movahedi, Mohammad Mehdi,

Background & Objective: In the recent years, nuclear medicine has enjoyed remarkable growth thanks to such novel technologies as SPECT-CT and PET, which are utilized for the recognition of new detectable molecules and radiopharmaceutical medicines. Therefore, the current regulations on radiation protection require revision. Namazi Hospital of Shiraz is one of the first nuclear medicine center...

Journal: :iranian journal of radiation research 0
m.a. gadhi bahawalpur institute of nuclear medicine and oncology (bino), pakistan atomic energy commission bahawalpur, pakistan sh. fatmi bahawalpur institute of nuclear medicine and oncology (bino), pakistan atomic energy commission bahawalpur, pakistan m.sh. gadhi institute of geology, university of the punjab, lahore, pakistan u. mahmood bahawalpur institute of nuclear medicine and oncology (bino), pakistan atomic energy commission bahawalpur, pakistan m. shakil department of physics, university of gujrat, pakistan s.a. buzdar medical physics research group, department of physics, the islamia university of bahawalpur, pakistan

background: the aim of the study was to analyze the effective dose record of occupationally exposed radiation workers at bahawalpur institute of nuclear medicine and oncology department. materials and methods: annual effective doses of occupationally exposed workers were measured by film badge dosimetry by sending the dosimeters to radiation dosimetry laboratory (rdl), pakistan institute of nuc...

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Yttrium Aluminum Garnet (Y3Al5O12) is a transparent ceramic with a wide range of applications such as high mechanical strength windows, high power laser sources and radiation detectors. The most important challenge in making these ceramics is the problem of low light transmittance, especially in the visible area in the range of 400 to 700 nm, which is greatly affected and reduced by various fac...

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