Photon stimulated desorption

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August undefined, 2024

WebApr 1, 2024 · This suggests that the "hot" component may be produced by electronically stimulated desorption (e.g., electron-stimulated desorption and/or photon-stimulated If this is the case, a possible "size ... WebDec 1, 2011 · Adsorption behavior of atomic deuterium on a hexagonal boron nitride (h-BN) thin film is studied by photon-stimulated ion desorption (PSID) of D + and near edge X-ray absorption fine structure (NEXAFS) at the B and N K-edges.After the adsorption of atomic deuterium, D + desorption yield η(hν) shows clear enhancement at the B K-edge and …

Photon stimulated desorption from a vacuum chamber at …

WebSynchrotron radiation at the Synchrotron Ultraviolet Radiation Facility at the National Bureau of Standards has been employed to study the adsorption of oxygen on a Ti(001) surface using photon-stimulated desorption (PSD), electron-stimulated desorption (ESD), and ultraviolet photoemission spectroscopy (UPS). The dominant ESD and PSD products … WebPhoton-stimulated desorption of F/sup +/ from Si(111) was studied with use of photon energies in the region of the Si 2p core level. Fluorinated surfaces with variable amounts of SiF/sub x/ groups were prepared, and distinct photon-stimulated--desorption thresholds in the Si 2p region were observed for F/sup +/ desorption from SiF vs SiF/sub 3/ surface … how do tile stickers work

(PDF) Synchrotron Radiation-Induced Desorption from a

WebPhoton-stimulated desorption (PSD) from the walls of electron storage rings and associated beamlines imposes serious limits on their beam quality and beam lifetimes. Stainless … WebElectron-Stimulated Desorption It has now been almost 30 years since the 1971 review article entitled Electron-Stimulated Desorption as a Tool for Studies of Chemisorption: A … WebIn this chapter, we describe a family of SR-based techniques utilizing photon-stimulated desorption (PSD) for the study of surfaces and other low-dimensional structures. It is the objective of this chapter to survey the unique scientific information concerning the … how much snow did charlotte nc get yesterday

Photo-Stimulated Desorption SpringerLink

Researcher Profile - HIRAYAMA Takato

WebApr 1, 2013 · X-ray photon-stimulated desorption of ions from semiconductor surfaces has been studied in detail by use of synchrotron radiation with photon energies between 2.8 and 12 keV. The excitation ... WebMay 15, 1984 · Photon stimulated desorption (PSD) refers to the ejection of ions, atoms, or molecular fragments from a surface initiated by the adsorption of single photons; to date, … how do tilt and turn windows workWebJul 13, 2001 · Photon stimulated desorption (PSD) from KEKB factory copper chambers was measured at the National Synchrotron Light Source (NSLS), located at the Brookhaven Laboratory. The KEKB is an asymmetrical collider recently constructed in Ibaraki, Japan. The collider utilizes two UHV ring chambers, one for a 3.5 GeV positron beam and the other for … how do tiltmeters work

"WebMoreover, photon-stimulated desorption studies that make use of synchrotron radiation reveal the fundamental electronic excitations that lead to bond-breaking processes at … " - Photon stimulated desorption

Photon stimulated desorption

WebJun 2001 - Present21 years 8 months. Daresbury, Warrington, Cheshire, UK. - Design and operation of Particle Accelerator Vacuum Systems and Large Vacuum Systems. - Vacuum gas dynamics modelling. - Outgassing of different materials in vacuum. - Photon, electron and ion stimulated desorption. - Non-evaporable getter coatings. WebAbstract. A model calculation is presented for photo-stimulated desorption of adsorbates from a metal surface. In the model, the electron system of the material is described by a …

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WebFeb 1, 1991 · Photon-stimulated desorption (PSD) from electrolytic-abrasively polished stainless steel, copper, and titanium was evaluated using synchrotron radiation (SR) in the … WebJan 1, 2024 · In this study, photon-stimulated gas desorption yields from CuCrZr, which are used for manufacturing high-heat-load elements, were measured using a synchrotron light with a critical energy of 10.4 keV at the Shanghai Synchrotron Radiation Facility. CuCrZr samples were exposed to synchrotron radiation (SR) under both normal and grazing …

WebFeb 27, 2007 · The photon-stimulated desorption (PSD) of O+ ions from the alpha-oxygen phase on Mo(100) has been monitored through and above the Mo L1(2s) absorption edge (2866 eV) and is compared to the ... WebMar 31, 2010 · We report studies of photon-stimulated desorption, also known as light-induced atomic desorption, of sodium atoms from a vacuum-cell glass surface used for loading a magneto-optical trap (MOT). Fluorescence detection was used to record the trapped atom number and the desorption rate. We observed a steep wavelength …

WebOct 1, 2024 · The thermal outgassing of NEG coated chamber is negligible, and the photon or electron stimulated desorption significantly decreases. A typical getter coating film composed of titanium (Ti), zirconium (Zr) and vanadium (V) has a low activation temperature of 180 °C (for 24 h) [ 1 , 6 ], and so the activation temperatures for NEG films … WebJun 4, 1998 · In our search for surfaces exhibiting the lowest photon stimulated desorption, we have exposed a 3‐m‐long beam tube to photons from the vacuum ultraviolet ring of …

WebJul 1, 2007 · Photon‐stimulated desorption (PSD) from the walls of electron storage rings and associated beamlines imposes serious limits on their beam quality and beam lifetimes. Stainless steel (SS) is the ...

WebJan 31, 2001 · Not only does it provide distributed pumping but also reduces the photon and electron stimulated desorption (PSD and ESD) yields [6] [7][8], which allows reduction of the number of pumps and their ... how much snow did deadwood sd getWebOct 1, 2024 · The thermal outgassing of NEG coated chamber is negligible, and the photon or electron stimulated desorption significantly decreases. A typical getter coating film … how much snow did dc get this weekWeb5]; lowering the photon and electron stimulated gas desorption yields [6, 7] was achieved by having a denser layer at the interface [8]. It was also found that the non-activated or CO saturated NEG coating can be activated by synchrotron radiation (SR) or electron bombardment. The selective pumping of NEG coating is a performance how do tilt shift lenses workWebJul 18, 2024 · However, current estimates of sulfur desorption from Mercury's surface based on solar wind sputtering and micrometeorite impact vaporization underestimate the … how much snow did denver co get last nightWebMay 12, 2024 · Thus, photon-stimulated desorption of adsorbates is the most likely mechanism responsible for plasma cooling. To further reinforce this plasma-induced evaporative cooling of a metal surface, we ... how much snow did council bluffs getWebAcademic and Research Staff at Rikkyo University. Researcher Profile. Home; Japanese how do tilt switches workWebJul 18, 2024 · However, current estimates of sulfur desorption from Mercury's surface based on solar wind sputtering and micrometeorite impact vaporization underestimate the observed abundances. Solar photons can also eject volatile species through a process known as photon-stimulated desorption (PSD) where photons with enough energy can … how much snow did denver co get today