Исследованы концентрационные зависимости электронно-стимулированной десорбции (ЭСД) атомов Cs и Na при адсорбции на неметаллических покрытия х, выращенных на W-подложке. Обнаружено, что процессы ЭСД происходят в интерфейсе адсорбированный слой-неметаллическая подложка. Показано, что спад в концентрационной зависимости выхода ЭСД, наблюдающийся после достижения монослойного покрытия, связан с уменьшением количества возбуждающих ЭСД электронов, достигающих интерфейса. DOI: 10.21883/PJTF.2017.14.44827.16777
Впервые прямым методом обнаружена электронно-стимулированная десорбция (ЭСД) атомов Cs с поверхности графена на металле (иридии). Измерения выполнены времяпролетным методом с помощью детектора на основе поверхностной ионизации. Порог появления выхода ЭСД атомов Cs при температуре поверхности 160 K равен 20 eV, также наблюдается дополнительный пик выхода ЭСД атомов Cs при энергии облучающих электронов 56 eV. Наблюдаемая ЭСД атомов Cs с графена связывается с неметаллической природой пленки графена на поверхности металла.
Electron-stimulated desorption of K atoms from the surface of potassium atoms on KxAuy was discovered. A KxAuy layer on a tungsten substrate with a gold film deposited on it with a thickness of not more than 5 atomic layers of gold. A quasi-resonant dependence on the energy of the exciting electrons of the electron-stimulated desorption was found. The quasi-resonance dependence is due to the excitation of core levels of Au 5p3/2 and Au 5p1/2. A model of electron-stimulated desorption of K atoms in the K/KxAuy system is proposed that adequately describes the processes that occur during electron-stimulated desorption of potassium atoms. The processes of electron-stimulated desorption excitation of potassium atoms occur at the K/KxAuy interface.
Market growth prospects of the entities during the innovation activity could not be sized up due to lack of systematized and shared view at factors defining the innovation activity of business entities. The paper presents key factors of innovation activity along with its classification by levels (macro, meso, and micro). Authors suggested a specific innovation activity evaluation framework as well as multivariate regression model of assessing the structure and keyfactors' effect on business activity is developed.
For the first time, semiconductor 2D layers LixAuy have been created on the surface of gold deposited on a tungsten substrate. The processes of electron-stimulated desorption (ESD) of Li atoms in the Li / LixAuy / Au / W system are studied. It is shown that ESD processes occur in the Li monolayer and the LixAuy layer closest to it. A model of ESD of Li atoms in the Li / LixAuy / Au / W system is proposed.
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