Photon stimulated desorption

Author: ckcj

August undefined, 2024

WebWe report photon-stimulated desorption (PSD) of ions by the same core-hole Auger-decay mechanism observed in electron-stimulated desorption (ESD). Ions desorbed by synchrotron radiation were identified by time-of-flight mass spectroscopy. The thresholds for the PSD and ESD of H +, O H +, and F + from Ti O 2 are identical. The PSD excitation ... WebAug 31, 1998 · Photon stimulated desorption ABSTRACT For condensed benzene ice layers, core photoabsorption near edge structure (x‐ray absorption; recorded by Auger electron …

Phys. Rev. A 81, 032710 (2010) - Light-induced atomic desorption for …

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, most studies have concentrated on the detection of ions. The properties of PSD which make it attractive as a surface characterization tool are its extreme surface sensitivity ... WebTools. Photostimulation is the use of light to artificially activate biological compounds, cells, tissues, or even whole organisms. Photostimulation can be used to noninvasively probe … importance of scheme of service

Study on selective adsorption of deuterium on boron nitride using ...

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 … WebJul 18, 2024 · However, current estimates of sulfur desorption from Mercury's surface based on solar wind sputtering and micrometeorite impact vaporization underestimate the … 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 … importance of scheme of work to teachers

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Vacuum Conditioning of the SOLEIL Storage Ring with …

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, … 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 … importance of schemes of workWebPhoton-stimulated desorption (PSD) from the walls of electron storage rings and associated beamlines imposes serious limits on their beam quality and beam lifetimes. Stainless … importance of schemes of work in teaching

"WebFeb 1, 1991 · Photon-stimulated desorption (PSD) from electrolytic-abrasively polished stainless steel, copper, and titanium was evaluated using synchrotron radiation (SR) in the … " - Photon stimulated desorption

Photon stimulated desorption

A Model Calculation for Photo-Stimulated Desorption

WebAug 12, 1999 · The measurement scheme for photon-stimulated desorption (PSD) of Na atoms includes a mechanically chopped photon source (500-W Hg arc lamp with filters), a … WebSoft laser desorption; Solar-pumped laser; Solar sail; Solid-state laser; Solid-state dye laser; Soviet laser pistol; Space-based solar power; Space debris; Spaser, Surface plasmon amplification by stimulated emission of radiation; Spatial filter; Spatial light modulator; Spatially Encoded Arrangement for SPIDER; Speckle pattern; Spectral hole ...

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WebMay 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 ... 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 …

WebNEG coating can reduce drastically the Photon Stimulated Desorption (PSD) effect [3], hence the conditioning time. At SOLEIL, in addition to the standard pumps, the use of NEG coating has been implemented in an extensive way to all the aluminium straight vacuum vessels of the storage ring that means quadrupole/sextupole type and WebFeb 20, 2024 · Abstract. Photo-stimulated desorption (PSD) is desorption of adsorbed molecules from surfaces induced by photon irradiation. PSD occurs either in thermal or …

WebJul 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 … 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 …

WebPhoton stimulated ion desorption (PSID) surface EXAFS (SEXAFS) showed early promi se, bei ng successfully appl i ed to the Mo (100) /0 system [1]. The techni que offers a means to determi ne the coordi nati on geometry of a substrate atom to which the des orbed adsorbate ion was bonded. Information importance of scheming pdfWebMay 19, 2006 · Photon-stimulated desorption is a powerful tool to study fundamental processes in adsorbate-surface systems, as well as to achieve selective surface reactions for controlled surface processing (1–4).Photons are easily directed and tuned in energy to induce transitions in atomic and molecular states, with high spatial and temporal precision. importance of scheme of workWebPhoton-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 … importance of scheming in teaching pdfWebJun 29, 2024 · The strong temperature dependence is attributed to competition between thermal desorption of the primary photoproduct and secondary photochemical steps. The aldehyde, isobutanal, is the primary photoproduct of isobutanol. ... (110) including temperature-programmed desorption of H 2 O and photon-stimulated desorption of O 2; ... importance of scheme of work in teachingWebFeb 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 ... literary elements symbolismWebThe Workshop on Desorption Induced by Electronic Transitions (DIET) took place May 12-14, 1982, in Williamsburg, Virginia. The meeting brought together, for the ... workers in the fields of electron and photon stimulated desorption from surfaces, as well as many workers in related fields, including ... sputtering, gas-phase photodissociation ... importance of scholarly writing in nursingWebJun 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 … literary elements used in beowulf