New insight on the high radiation resistance of UO 2 against fission fragments

2016 ◽  
Vol 482 ◽  
pp. 28-33 ◽  
Author(s):  
G. Szenes
2021 ◽  
Vol 627 (5) ◽  
pp. 53-56
Author(s):  
K. V. Shabalin ◽  
◽  
L. E. Foss ◽  
L. I. Musin ◽  
O. A. Nagornova ◽  
...  

This review is devoted to the generalization and systematization of the available literature data on the processes of abiotic degradation of asphaltenes, which can occur in natural conditions. In particular, it was shown that exposure to sunlight, and especially UV radiation, triggers photolysis and photooxidation reactions in asphaltenes, leading to an increase in the oxygen content in them, thereby shifting the hydrophilic-lipophilic balance towards hydrophilicity. At the same time the availability of reaction products for subsequent biotic degradation by microorganisms is increased. Exposure to ionizing radiation does not lead to a significant change in the molecular composition of asphaltenes, due to their high radiation resistance. As exception there is the irradiation of asphaltenes with intense electron beams, which leads to their significant degradation.


2005 ◽  
Vol 35 (7) ◽  
pp. 663-666 ◽  
Author(s):  
Gennadi I Babayants ◽  
Sergey G Garanin ◽  
V G Zhupanov ◽  
Evgeni V Klyuev ◽  
Anton V Savkin ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58296-58301 ◽  
Author(s):  
Shuquan Chang ◽  
Jin Li ◽  
Wei Han ◽  
Zheng Zhang ◽  
Ling Chang ◽  
...  

Functionalized MWCNT/novolac epoxy nanocomposite coatings with high radiation resistance were successfully fabricated and studied.


2020 ◽  
Vol 391 ◽  
pp. 125719
Author(s):  
Maxim.V. Zdorovets ◽  
Dmitriy I. Shlimas ◽  
Alena E. Shumskaya ◽  
Artem.L. Kozlovskiy

2003 ◽  
Vol 42 (Part 2, No.9A/B) ◽  
pp. L1054-L1056 ◽  
Author(s):  
Tetsuo Soga ◽  
Nallathambi Chandrasekaran ◽  
Mitsuru Imaizumi ◽  
Yousuke Inuzuka ◽  
Hironori Taguchi ◽  
...  

1997 ◽  
Author(s):  
Valerica Cimpoca ◽  
Mariana Petris ◽  
Radu Ruscu ◽  
Madalina Breten ◽  
Rodica Moraru

Author(s):  
Гасан Абакарович Мустафаев ◽  
Арслан Гасанович Мустафаев ◽  
Наталья Васильевна Черкесова

Полупроводниковые МДП (металл - диэлектрик - полупроводник) структуры являются ключевыми элементами современной электронной техники, в том числе устройств работающих в условиях воздействия проникающих излучений. Одним из возможных подходов к уменьшению радиационных эффектов в МДП структурах является использование диэлектриков, которые уменьшают генерацию и накопление избыточного пространственного заряда в объеме диэлектрика. В работе исследована система диэлектриков AlO - SiO. Исследование показывает пригодность использования МДП структур, на основе системы диэлектриков, для формирования приборов с высокой радиационной стойкостью. Нанесение слоя AlO поверх слоя SiO улучшает рабочие характеристики МДП структур за счет повышения однородности параметров. Основной эффект влияния слоя AlO на параметры структур заключается в уменьшении механических напряжений на границе SiO-подложка. Захват ловушками электронов в AlO, компенсирует заряд захваченных дырок в AlO, и снижает паразитный ток через AlO. Metal-insulator-semiconductor (MIS) structures are key elements of modern electronic technology, including devices operating under conditions of exposure to penetrating radiation. One of the possible approaches to reducing radiation effects in MIS structures is the use of dielectrics, which reduce the generation and accumulation of excess space charge in the bulk of the dielectric. We investigated the system of dielectrics AlO - SiO. The study shows the suitability of using MIS structures based on a system of dielectrics for formation of devices with high radiation resistance. Applying a AlO layer on top of the SiO layer improves the performance of MIS structures by increasing the uniformity of parameters. The main effect of the influence of the AlO layer on the parameters of the structures is to reduce the mechanical stresses at the interface SiO -substrate. The trapping of electrons in AlO, compensates for the charge of the trapped holes in SiO, and reduces the parasitic current through AlO.


1982 ◽  
Vol 152 (1) ◽  
pp. 260-268
Author(s):  
S N Ibe ◽  
A J Sinskey ◽  
D Botstein

The genes involved in the high radiation resistance of mutant R68 of Salmonella typhimurium LT2 were mapped by conjugation. It was observed that the high radiation resistance involved genes localized in two regions of the chromosome, which have been designated as garA and garB for high gamma resistance. The garA gene mapped near gal and uvrB at about 18 map units, and the garB gene mapped near purC at about 49 map units. The resistance of R68 was reduced to the wild-type level by the acquisition of the two wild-type alleles, garA+ and garB+. Recombinants carrying the garA or garB gene repaired single-strand breaks in their DNA faster than did the wild-type strain. However, only those with the garA mutation showed a marked increase in UV irradiation resistance above the wild-type level, whereas those with garB mutation exhibited an increased rate of spontaneous degradation of DNA beyond the level observed in recA cells.


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