Last edited by Togul
Monday, August 10, 2020 | History

3 edition of Surface studies related to the development of a hyperthermal oxygen atom beam generator found in the catalog.

Surface studies related to the development of a hyperthermal oxygen atom beam generator

by Mark Rogers Davidson

  • 371 Want to read
  • 8 Currently reading

Published .
Written in English

    Subjects:
  • Surfaces technology -- Analysis.,
  • Oxygen.,
  • Diffusion.,
  • Silver.

  • Edition Notes

    Statementby Mark Rogers Davidson.
    The Physical Object
    Paginationvi, 89 leaves :
    Number of Pages89
    ID Numbers
    Open LibraryOL23551112M
    OCLC/WorldCa23067831

      A 2D hybrid Monte Carlo-fluid model is applied to calculate the plasma characteristics in an oxygen inductively coupled plasma. Detailed information regarding this model can be found in papers from Kushner et al, who developed the Hybrid Plasma Equipment Model (HPEM) [].. The plasma properties within the reactor volume are calculated in the HPEM using three different modules. argon and oxygen were used to analyse the plasma emission spectra. The most significant oxygen lines in our experimental conditions were the nm and nm lines. These lines correspond to the deexcitation of the oxygen *atom in the state 5P (O), whose creation is FIG. 6. Emission spectrum of RF discharge in the Ar/O 2 mixture.

      Development of neutral beam injection (NBI) heating system utilizing a hydrogen/deuterium (H/D) negative ion source, is significant for . The Atom˜oTM series o˝ers a variety of plasma applicator geometries. Each applicator is speci˚cally tailored for its intended industry. 1” and 2” linear plasma head Minibeam head Deposition head Key plasma properties Speci˚cations Oxygen, Nitrogen, Hydrogen, Carbon Dioxide, Nitrous Oxide 1” and 2” linear head Deposition head.

    I'm trying to understand the energy levels of the oxygen atom and what wavelengths get the atom to those energy levels. I know the first level iseV, and the second is eV. Now, what i would like to know is how many energy levels the oxygen atom has before it becomes ionized, which is eV. And what eV it takes to get to each level. Electron beams in plasmas Charged Particle Beams () Figure a shows a solution of Eq. () for a broad beam (rb/8d = 8) with a sharp boundary. The reduction of the plasma electron density equals the beam density over most of the beam width. Electric fields are concentrated within one Debye length of the beam edge. The on-axisFile Size: 2MB.


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Surface studies related to the development of a hyperthermal oxygen atom beam generator by Mark Rogers Davidson Download PDF EPUB FB2

MOLECULAR BEAM STUDIES OF HYPERTHERMAL ATOMIC OXYGEN AND ARGON INTERACTIONS WITH POLYMER SURFACES AND GAS-PHASE MOLECULES by Amy Leigh Brunsvold A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Chemistry MONTANA STATE UNIVERSITY Bozeman, Montana April Hyperthermal Ar atom scattering from a C() surface Article (PDF Available) in The Journal of Chemical Physics (22) July with 48 Reads How we measure 'reads'.

It has been an impedimental problem, for the laser detonation-type atom beam generator, that a poppet in the pulsed supersonic valve is rapidly eroded by the irradiation of powerful laser light and Cited by: 5.

Browse any ebooks by genre Nonfiction. Browse any genre in our library. Read online and add your books to our library. Best fiction books are always available here - the largest online library. Page Surface structural changes of a Ti-doped diamond-like carbon (Ti-DLC) film exposed to a hyperthermal atomic oxygen beam were investigated by near-edge X-ray absorption fine structure (NEXAFS).

It was confirmed that the C atoms on the Ti-DLC surface were desorbed as the CO and/or CO 2 and Ti atoms were remained on the Ti-DLC surface as the TiO by: 7.

Sample exposures were performed with a pulsed beam containing hyperthermal O atoms that were generated with a laser detonation source. After exposure, samples were removed from the chamber in which the exposures were done, and postexposure analyses were performed: etch depth (profilometry) and surface topography (atomic force microscopy).Cited by: 2.

The number of the molecular beam studies exploring the incident energy dependence of oxidation on TiAl surface for unraveling kinetics and dynamics in the oxidation on TiAl have been still limited.

Here, we report results of our detailed studies on the initial oxidation process of TiAl with a eV hyperthermal oxygen molecular beam (HOMB Cited by: 4. The carbon concentration in the near-surface region is reduced from at.% for the as-entered surface to at.% following 63 h of O-atom exposure at a flux of × 10 O atom/cm-s.

als [5, 6, 7]. In surface chemistry, charge transfer is involved in many surface processes and its study can help to evaluate the reactivity and other chemical properties of a given surface. Hydrogen atom beam sources can also be used for local gentle cleaning of various surfaces.

Atomichydrogenhasastrong technologicalrelevance,sinceHatomsoften. The Oxygen Atom Beam Source OBS is a thermal gas cracker that produces an ion-free oxygen gas beam, thus avoiding ion induced damage to the substrate. It features a very compact design and is easy to install and to operate. Scattering dynamics of hyperthermal oxygen atoms on ionic liquid surfaces: [emim][NTf 2] and [C12mim][NTf 2] Bohan Wu, Jianming Zhang, Timothy K.

Minton, Kenneth G. McKendrick, John M. Slattery, Scott Yockel, George C SchatzCited by: / Inelastic and reactive scattering dynamics of hyperthermal oxygen atoms on ionic liquid surfaces: [emim][NTf 2] and [C 12 mim][NTf 2]. 27th International Symposium on Rarefied Gas Dynamics -RGD Vol.

PART 1. Author: Bohan Wu, Jianming Zhang, Timothy K. Minton, Kenneth G. McKendrick, John M. Slattery, Scott Yockel. Oxygen is the chemical element with the symbol O and atomic number 8.

It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other mass, oxygen is the third-most abundant element in the universe, after hydrogen and standard temperature and pressure, two Allotropes: O₂, O₃ (Ozone).

Chapter 5 Scattering of Hyperthermal Nitrogen Atoms from the Ag() Surface Measurements on scattering of hyperthermal N atoms from the Ag() surface at temperatures ofand K are presented. The scattered atoms have a two-component angular distribution. One of the N components is very broad. In contrast.

If the atomic oxygen arrival comes from a fixed angle of impact, the resulting erosion will foster the development of a change in surface morphology as material thickness decreases.

Hydrocarbon and halopolymer materials, as well as graphite, are easily oxidized and textured by directed atomic oxygen in LEO at energies of ~ eV. The SR-PES spectra indicated that the suboxides in the O-atom-beam oxidized film were concentrated on the Si O 2 surface rather than at the Si ∕ Si O 2 interface.

The CTR scattering data of the O-atom-beam oxidation film had a lower intensity near (1 1 L) ( Cited by: 8. The CO-covered surface was prepared by background dosing isotopic 13CO gas (purity 99%) at a partial pressure of 1× mbar for 14 min.

Prior to each new TOF measurement the surface was flashed and a new 13CO overlayer was prepared. The Ar beam impinged on the surface at an incident angle of 60° with respect to the surface normal. Laser cutting depends on an assist gas, which may be active or inert.

Oxygen is the standard active assist gas used for laser cutting of mild and carbon steels. It is also referred to as the cutting gas. When cutting with oxygen, the material is burned and vapourised after being heated up to ignition temperature by the laser beam.

The system is comprised of three major parts, (i) ultrahigh vacuum setup, (ii) hyperthermal oxygen atom generator (HOAG) and (iii) ion-neutral mass spectrometers (INMS). Each individual part will be considered, their performance analysed based on experimental data acquired during the characterisation and commissioning, thus leading to a Author: Vitor Toshiyuki Abrao Oiko, Peter Roberts, Stephen Worrall, Steve Edmondson, Sarah Haigh, Nicholas C.

surface texture of chlorotrifluoroethylene exposed to thermal energy atomic oxygen (~ eV) in a RF air plasma with hyperthermal (~ eV) atomic oxygen in LEO. The LF plasma ashers have consistently shown the development of higher aspect ratio textures on. Blog. 30 April Prezi’s Staff Picks: InVision employees share their remote work secrets; 24 April How to make a sales pitch on video; 22 April Lebéhot A., Kurzyna J., Lago V., Dudeck M., Campargue R.

() Laser Sustained Plasma Free Jet and Energetic Atom Beam of Pure Argon or Oxygen Seeded Argon Mixture. In: Campargue R. (eds) Atomic and Molecular by: 2.Development of a stable source of atomic oxygen with a pulsed high-voltage discharge and its application to crossed-beam reactions.

Lu IC(1), Huang WJ, Chaudhuri C, Chen WK, Lee SH. Author information: (1)Department of Chemistry, National Tsing Hua University, Hsinchu, by: