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RADIATION EFFECTS ANALYSIS OF CMOS DEVICES IN LEO ENVIRONMENT Muhammad Sajid1), N.G. Chechenin2), Frank Sill Torres3), E.U. Khan4), Shahrukh Agha1), Adeel Shahzeb5) 1) Department of Electrical Engineering, COMSATS Institute of Information Technology (CIIT), Park road, Islamabad, Pakistan, 2) Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia, 3) Department of Electrical Engineering, UFMG Brazil, 4) Department of Physics, CESET Islamabad Pakistan, 5) Satellite Research and Development Center SUPARCO Lahore Email: sajiddikhan@gmail.com, franksill@ufmg.br , nchechenin@yandex.ru, ehsanukhan@ceset.pk, shahrukh_agha@comsats.edu.pk This paper concentrates on the impact of Low Earth Orbit (LEO) ionizing radiation environment on NMOS transistor fabricated in 65nm bulk CMOS technology node. The energy deposited by protons and heavy ions present in Earth radiation belts, Solar flares and Galactic Cosmic Rays was estimated which can results in degradation of device performance by the creation of electron-holes pairs. The impact of technology scaling on charge sharing, critical charge, SEU cross-section, I-V characteristic and SEU rate was determined. The estimated SEU rates were compared with the devices fabricated in 90nm, 45nm and 32nm. Finally, the impact of spot shielding of 100mils thickness on LET spectrum of transmitted particles was evaluated. In order to characterize the robustness of scaled nano-CMOS devices, state of the art simulation tools like visual TCAD/Genius, GSEAT/VisualParticle were utilized whereas LEO radiation environment was determined with the help of OMERE-Trad software. SiO2 .. 1), .. 1), . . 2), .. 2), .. 2) 1) . .. , , 2) , , , . , . ( ­ ) , . (, 1 2 - ) . «» , , , .


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. 1. . 1. 2. 3. Chechenin N.G., Chernykh P.N., Vorobyeva E.A., Timofeev O.S. // Appl. Surf. Science, 2013, 275, 217. Voronina E.N., Novikov L.S., Chernik V.N., et al. // Inorg. Mat.: Appl. Res. 2012, 3, 95. Voronina E.N., Novikov L.S. // RSC Adv., 2013, 3 (35), 15362.


, - .. , .. , .. , .. , .., .. «», , . -. , , . - - : Si, Zr, Be. - Nicolet Termotech ( 4000 - 400 -1 0,09 -1, 75 /). EXCEL-2013 . , Al, Be , ( 3% ). . , Be-O, Al-O , RBS AND EDS INVESTIGATION OF DEPOSITION CONTENT IN CNT-BASED FILTERS FOR LIQUID SOLUTIONS E.M.I. Elsehly1),2), N.G. Chechenin1), K.A. Bukunov1), A.V. Makunin1), A.B. Priselkova1), E.A. Vorobyeva1), H.A. Motaweh2). A.A. Shemukhin
2) 1)

SINP MSU, Russia, Damanhour University, Egypt

1)

Carbon nanotubes (CNTs) became a focus of attention of many scientists and companies worldwide. The small dimensions, strength and the remarkable physical properties of these structures make them a unique material with a whole range of promising applicatio ns. CNT-based filters have a prospective advantage in comparison to the commercial filters already in operation because they are lightweight, do not use any chemicals, and do not require electricity or heat to operate. In the report we give an overview of the use of CNT-based filters as adsorbent for metal ions in liquid solutions like manganese. Different types of multiwall CNTs (MWNTs), both, commercial and grown in our laboratory, were used to prepare the samples of filters. In particular, large arrays of vertically aligned CNT (VANTs) were fabricated by a continuous spray pyrolysis method by using cyclohexane as a carbon source and


ferrocene as a catalyst source. To estimate the efficiency of filtration, different parameters were measured, such as conductivity of solution, pH, contact time, optical measurements. Also the samples of CNT-filters after filtration process (with graphite as a substrate) were characterized by RBS and EDS techniques to investigate the deposition content in the filter. It was found that CNT-based filters are efficient for the adsorption of heavy metals from aqueous solution. DETERMINATION OF THE NI (Tl) DETECTOR EFFICIENCY USING RADIOACTIVE PARALLELEPIPED SOURCES Mohamed S. Badawi1), Mona M. Gouda1), Ahmed M. El-Khatib1), Mohamed A. Elzaher2), Abouzeid A. Thabet3), Ahmed A. Salim1) and Mahmoud I. Abbas1) 1) Physics Department, Faculty of Science, Alexandria University, 21511 Alexandria, Egypt, 2) Department of Basic and Applied Sciences, Faculty of Engineering, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt, 3) Department of Medical Equipment Technology, Faculty of Allied Medical Sciences, Pharos University in Alexandria, Egypt The efficiency transfer technique is considered as a straightforward mathematical method to calculate the full-energy peak efficiency of 3"в3" NaI (Tl) scintillation detector over a wide energy range. The calculations were based on calculating the effective solid angle ratio between the detector surface and the parallelepiped sources located at various distances from detector surface. Moreover, the reduction of the photon by the source-detector structure [detector material, detector end cap and holder material] was considered and determined. This method is basically useful in setting up the efficiency calibration curve for NaI (Tl) scintillation detector when there is no calibration sources exist in dimensions form. The values of the efficiency calculations using mathematical method were compared with the measured ones and the results in general show good agreements. VARIATION OF HEMATOLOGICAL PARAMETERS IN RATS EXPOSED TO ELECTROMAGNETIC RADIATION Sahar E. Abo-Neima1), Karolin Abdel-Aziz Barakat1), Hassan Tourk1), Marzoga F.Ragab3) and Hussein A. Motaweh1) 1) Department of Physics, Faculty of Science, Damanhour University, Egypt 2) Department of Zoology, Faculty of Science, Damanhour University, Egypt 3) Department of Physics, Faculty of Science, Omar El-Moktar University, Elgouba Lebya Objective: To investigate the effects of electromagnetic raditions on some hematological parameters of male white rats. Methods: Fifty male albino rats were equally divided into three groups namely A, B, and C. Animals of group A used as control group which didn't receive any treatment. Animals of group B was divided into two subgroups namely B1 and B2 which were discretely exposed to 50Hz, 3KV/m electric field (EF) for a period of 15 day (8 hours/day, 5day/week). Group B 2 animals were left to survive and housed at normal environmental conditions similar to control group A for a period of 15 day post exposed. Animals of group C are divided into two subgroups namely C1 and C2 were discretely exposed to the EF for a period of 30 day (8 hours/day, 5day/week). Group C2 animals were left to survive and housed at normal


environmental conditions similar to control group A for a period of 15 day post exposed. At the end of this period, blood samples were collected from all groups for investigation hematological parameters. Result: showed that exposure to electromagnetic radiations originated different metabolic and hematological disruption, which appeared to be related to the duration of exposure, the treatment to EF caused a changes in hemoglobin concentration (Hb), white blood cells (WBCs), red blood cells (RBCs) count as compared to control group, Values of RBCs, WBCs are decreased with increasing exposure time and there is no improvement in hematological parameters for recovery groups post exposed. This means that these components of blood are broken due to irradiated by EF from technological devices which used daily and there is a significant effect in hemoglobin molecule structure due to damage/or broken, also the exposure induced changes in Eosinophile, Hb ,Paced Cell Volume(PCV)Mean Corpuscular Volume(MCV) and Mean Corpuscular Hemoglobin Concentration (MCHC) levels . Conclusion: Exposure to electromagnetic radiations is responsible for the variations of some hematological parameters in rats. RBS EDS .. , .. , .. , .. , .. , (), , () , . , , . . , . () , , NV- , , .. 1) .. 1), .. 1), .. 1), .. 2), .. 2), 1) .. , 2) .. , , , N V , () . Ib 750-1150. NV- - .


(111) I Ib - (1200-1600oC, 3-7 ) H2+ 25 - 50 = 11013-3x1017cm-2 N+ I 200 450oC . , , , NV- . . , .. 1), .. 1), .. 2), .. 3), .. 4), .. 4) 1) " ", , 2) . .. , , 3) - .. , , 4) . .. , , He+ 2 C, Cu W , -4, . Ar, D2. , . ~100 / ~500 . . . .1 : C, Cu W .

.1. : C, Cu W . ) 15-3, E=82,N=14; ) 22-3, E=61,N=20 . . , 15-02-05995.