Electron-stimulated desorption
Electron-stimulated desorption occurs as a result of an electron beam incident upon a surface in vacuum, as is common in particle physics and industrial processes such as scanning electron microscopy (SEM). At atmospheric pressure, molecules may weakly bond to surfaces in what is known as adsorption. See more Desorption is the physical process where a previously adsorbed substance is released from a surface. This happens when a molecule gains enough energy to overcome the activation barrier of the bounding energy … See more • Adsorption • Desorptive capacity • Sorption isotherm • Chemisorption • Gibbs isotherm • Moisture sorption isotherm See more Depending on the nature of the adsorbent-to-surface bond, there are a multitude of mechanisms for desorption. The surface bond of a sorbant … See more Desorption is a physical process that can be very useful for several applications. In this section two applications of thermal desorption are explained. One of them is actually a technique of thermal desorption, temperature programmed desorption, rather than an … See more WebElectron stimulated desorption, Auger line shape analysis, and electron loss spectroscopy measurements are reported for the electron activated stepwise oxidation …
Electron-stimulated desorption
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WebJan 1, 1991 · The desorption of surface-bound species induced by electronic excitation mechanisms is a fascinating phenomenon of fundamental as well as technological … WebElectron-Stimulated Desorption as a Tool for Studies of Chemisorption: A Review. Bombardment of solids by low-energy electrons (<500 eV) can cause various changes in …
http://webdoc.sub.gwdg.de/ebook/diss/2003/fu-berlin/1999/24/ch_7.pdf Web14 hours ago · The thermally stimulated desorption curves showed that hydrogen begins to release from the composite where the MgH 2 decomposition is ... (EDX) using an X-Max 50 energy dispersive X-ray spectrometer (Oxford Instruments plc, UK). Transmission electron microscopy (TEM) observations were performed on a CM 12 microscope …
WebJul 9, 2008 · Electron stimulated desorption ABSTRACT. A simple model is proposed to explain how a breakdown avalanche of secondary emission electrons can lead to surface flashover when an insulator in vacuum breaks down a few nanoseconds after high voltage is applied. The case of a plane insulator ... WebJul 9, 2008 · Electron stimulated desorption ABSTRACT. A simple model is proposed to explain how a breakdown avalanche of secondary emission electrons can lead to surface …
WebAn Electron-Stimulated Desorption Ion Angular Distribution and Low-Energy Electron Diffraction Investigation of CF3I on Ru(001). Langmuir 1996 , 12 (14) , 3472-3480.
http://www.socolar.com/Article/Index?aid=100027021036&jid=100000000012 mountaineer waynesville nc newspaperWebAug 12, 2003 · Electron beam induced production and desorption of H+, H2+, OH+, and H+(H2O)n has been studied from water-covered zirconia surfaces. The proton yield is strongly dependent upon the form of water present with large yields mainly from multilayers or clusters. The high proton kinetic energy distributions and the linear yield vs dose are … mountaineer wellness centerWebOct 19, 2024 · Electron-stimulated desorption (ESD) of cryosorbed molecules on surfaces is a process of relevance to fields as varied as vacuum dynamics in accelerators and astrochemistry. While desorption... hearing aid delivered freeWebAug 14, 2013 · The discrepancy is attributed to electron-stimulated desorption, which is known to occur during electron irradiation. The data suggest that, of the W(CO)(6) molecules that are affected by the electron irradiation, the majority desorbs from the surface rather than dissociates to contribute to the deposit. mountaineer wellness and recovery centers llcWebFeb 15, 2024 · Stimulated desorption 1503 a surface impinged by an ion beam of intermediate energy (of the order of 1 02- 1 O4 eV). The physical processes which are responsible for the desorption of the ions in SIMS have both kinematic and electronic components (Williams 1979, Schulta et a1 1983). We will present a number of examples … mountaineer wellnessWebFeb 20, 2024 · Such particle release is generally referred to as desorption-induced electronic transition (DIET). When electrons are used as an excitation source, it is also … mountaineer wheelsWebJul 8, 2014 · The reduction of thermal outgassing from stainless steel by surface polishing or vacuum firing is well-known in vacuum technology, and the consequent use of both techniques allows an even further reduction of outgassing. The aim of this study was to identify the effectiveness of surface polishing and vacuum firing for reducing electron … hearing aid dehum