نتایج جستجو برای: srim code
تعداد نتایج: 167967 فیلتر نتایج به سال:
nursing is a universal health care necessity. nursing profession, similar to the other medical professions, is responsible to maintain public health promotion, prevent diseases, and also care and rehabilitate client, family and the soci¬ety. the inher-ent nature of nursing is respect for moral values and human rights. however, clinical ethical dilem¬mas occur for nurses at all levels, not alway...
چکیده ندارد.
AlGaN/GaN high electron mobility transistors (HEMTs) were exposed to 3 MeV protons at fluences of 6 10, 4 10 and 1 10 protons/cm. The drain saturation currents decreased by 20% and the maximum transconductance decreased by 5% at the highest fluence. As the fluence increased, the threshold voltage shifted more positive values. After proton irradiation, the gate leakage current increased. The Sch...
The biological damages are mainly produced by direct ionization and excitation of bio-molecular DNA electrons or by indirect chemical reaction of water radiolysis products with DNA. In this work, we restricted our study on the interaction of energetic ion proton beams with liquid water; since the water represents over 80% of the most-soft tissues. The proton collisions with water molecules are ...
Ion-beam induced effects in -Al2O3 of c, a, and r orientations were studied by Rutherford backscattering spectrometry RBS in channeling configuration using 1.4 MeV He ions. 150 keV Ar, 150 keV K, or 80 keV Na ions were step by step implanted at 15 K followed immediately by the RBS analysis without changing the sample environment. Defect annealing was observed during the RBS measurement, which i...
Measurement of the direction of the elastic nuclear recoil track and ionization charge distribution along it, gives unique possibility for unambiguous detection of the dark matter WIMP particle. Within current radiation detection technologies only Time Projection Chambers filled with low pressure gas are capable of such measurement. Due to the character of the electronic and nuclear stopping po...
در این پایان نامه تلاش شد تا امکان تولید رادیوایزوتوپ آهن-55 که پیش از این در مرکز تحقیقات کشاورزی هسته ای کرج تولید شده بود، به وسیله کد مونت کارلوی mcnpx شبیه سازی شده تا میزان مطابقت داده های تجربی با نتایج به دست آمده از کد ارزیابی گردد. با استفاده از قابلیت های فراوان کد، مطالعه دقیق و کم هزینه تولید این رادیوایزوتوپ بررسی شده است. در این تحقیق ابتدا با استفاده از کدهای alice، alice/ash و ...
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