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Photon stimulated desorption

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

Instrumentation for photon stimulated desorption - ScienceDirect

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 ... Web5]; 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 can a woman be a tailor https://montoutdoors.com

Phys. Rev. Lett. 43, 300 (1979) - Photon-Stimulated Desorption of …

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 … 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 … WebJun 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; ... can a woman beat a man in a fight

Photon stimulated desorption from a vacuum chamber at the …

Category:Photon‐Stimulated Desorption of MgS as a Potential Source of …

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Photon stimulated desorption

Instrumentation for photon stimulated desorption

WebThe 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 ... 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 …

Photon stimulated desorption

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WebJan 1, 1999 · stimulated desorption in a vacuum system with cryo-sorbing walls started in 1993 at the Budker Institute of Nuclear Physics (BINP, Novosibirsk, Russia) and at the … 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 …

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 … Web(Q TH) and photon-stimulated desorption (Q PSD). Q TH arises from the chamber wall and depends on the material. Stainless steel is the material chosen for the vacuum chamber, for which Q TH is about 2.0×10-12 Torr L s-1 cm-2 near 300 K. Q PSD, which is much greater than the rate of thermal desorption, is the major source of gas, and can be ...

WebAcademic and Research Staff at Rikkyo University. Researcher Profile. Home; Japanese 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

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 ...

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, … fishing among usWebPhoton stimulated desorption PSD studies using synchrotron radiation are providing new insights into fundamental electronic excitation processes at surfaces. Mechanisms for … fishing ammocan a woman be born with two vaginasWebJun 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 … can a woman be a youth pastorWebIn earlier experiments on the X-ray photon energy dependence of the F-centre yield by monochromatic X-rays, a step was found at the ClK edge in the yield of the F centres in KC1 [29]. ... approaches Walkup and Avouris 1331 have used molecular dynamics to follow the transient motions associated with stimulated desorption in an approach mak- ing ... can a woman be born with three breastsWebAbstract. 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 … can a woman be called a kingWebIn 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 … fishing and accommodation packages