نتایج جستجو برای: proton irradiation
تعداد نتایج: 128398 فیلتر نتایج به سال:
Abstract The Middle East Technical University Defocusing Beamline (METU-DBL) is designed to deliver protons with selectable kinetic energies between 15–30 MeV, and proton flux 10 6 –10 protons/cm 2 /s, on a maximum 21.55 15.40 cm target region beam uniformity within ±6%, in accordance the ESA ESCC No. 25100 specification for single event effects (SEEs) tests low energy range. achieved high flue...
We report experiments on the impact of 2.5 MeV proton irradiation on self-diffusion and dopant diffusion in germanium (Ge). Self-diffusion under irradiation reveals an unusual depth independent broadening of the Ge isotope multilayer structure. This behavior and the observed enhanced diffusion of B and retarded diffusion of P demonstrates that an interstitial-mediated diffusion process dominate...
BACKGROUND In an aging society, increasing number of older patients are diagnosed with esophageal cancer. The purpose of this study was to assess the clinical efficacy and safety of proton beam therapy for older patients with esophageal cancer. PATIENTS AND METHODS Older patients (age: ≥ 65 years) newly diagnosed with esophageal cancer between January 2009 and June 2013 were enrolled in this ...
We present investigation of high energy radiation detectors based on 4H-SiC as influenced by irradiation with 24 GeV proton doses of up to 10 cm. SiC detectors have been produced from n-type 4H-SiC epilayers grown on the top of the n-type substrate. They were supplied with a nickel ohmic contact on the back surface and a gold Schottky contact on the top. Activities and numbers of Be and Na atom...
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