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Wednesday, July 29, 2020 | History

2 edition of Evidence for neutral beam injected oxygen impurities in 2XIIB found in the catalog.

Evidence for neutral beam injected oxygen impurities in 2XIIB

R. Paul Drake

Evidence for neutral beam injected oxygen impurities in 2XIIB

by R. Paul Drake

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  • 34 Currently reading

Published by Dept. of Energy, [Office of the Assistant Secretary for Defense Programs], Lawrence Livermore Laboratory, for sale by the National Technical Information Service] in [Livermore, Calif.], [Springfield, Va .
Written in English

    Subjects:
  • Nonneutral plasma,
  • Plasma confinement

  • Edition Notes

    StatementR. Paul Drake and H. Warren Moos
    SeriesUCID ; 17933
    ContributionsMoos, H. Warren 1936- joint author, United States. Dept. of Energy, Lawrence Livermore Laboratory
    The Physical Object
    Pagination11 leaves :
    Number of Pages11
    ID Numbers
    Open LibraryOL14884565M

    Oxygen is a plentiful and highly reactive element on the earth. Oxygen comprises about 21% of the earth's atmosphere. In its elemental form oxygen is a gas and diatomic. Major Components in Earth's Atmosphere Gas Percent Mass Gas Percent Mass nitrogen neon oxygen helium argon krypton Subnanometer-thick Al2O3 barrier layers on nanocrystalline TiO2 film were prepared with atomic layer deposition (ALD). The method allowed variation of barrier thicknesses at atomic resolution also deep in nanoporous structures, which makes it a superior method as compared to, e.g., sol−gel techniques. In this letter we present results on the effect of Al2O3 barriers of various thicknesses on Cited by:

      A novel burner, in which fuel (natural gas) and oxidant (oxygen or air) are separately injected into a furnace, shows promise for achieving very low nitrogen oxide(s) (NOx) emissions for commercial furnace applications. The dilute oxygen combustion (DOC) burner achieves very low NOx through in-furnace dilution of the oxidant stream prior to combustion, resulting in low flame Author: H.M. Ryan, M.F. Riley, H. Kobayashi. Pathogens that cause plague or cholera use miniature syringes to introduce molecular agents into their host cell, disabling the immune defense of the infected cell. Scientists have now revealed the structure of this miniature syringe at atomic resolution, which may lead to the development of drugs a.

      Affiliations. State Key Laboratory of Pollution Control and Resources Reuse, The School of the Environment, Nanjing University, Nanjing , People’s Republic of China, CNCited by: 4. oxygen on abscission ( 12, 22, 23, 26). Carns et al. (12) found that maximum rates of abscission occurred whenthe gas phase containled 50 %oxygen. However, ethylene is a conmmiion contaminant of commercial oxvgeni in our case ppmi, and it is possible that the increased abscission ab-ove 20 % oxygen was due to of ethylene oxygen, oxygen Cited by:


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Evidence for neutral beam injected oxygen impurities in 2XIIB by R. Paul Drake Download PDF EPUB FB2

Get this from a library. Evidence for neutral beam injected oxygen impurities in 2XIIB. [R Paul Drake; H Warren Moos; United States. Department of Energy.; Lawrence Livermore Laboratory.]. Evidence for neutral beam injected oxygen impurities in 2XIIB [] Drake, R.

Paul. [Livermore, Calif.]: Dept. of Energy, [Office of the Assistant Secretary for Defense Programs], Lawrence Livermore Laboratory ; [Springfield, Va.: for sale by the National Technical Information Service], 1.

Introduction. The neutral beam injection (NBI) system is essential for the next-step in fusion research devices, such as the International Thermonuclear Experimental Reactor (ITER), for an auxiliary heating and current drive to achieve long pulse or continuous steady-state burning ide large tokamaks, such as JET (EU), TFTR (USA), DIII-D (USA), and JTU (Japan), have Cited by: Neutral beam injection was developed in the late 70ties and is now the main heating method for most of the fusion experiments worldwide.

The method is rather simple: neutral atoms are able to overcome the confining magnetic field of a tokomak or a stellarator and are. For the beams of injector 2 the injected neutral beam power deposited on the actively cooled panels of the calorimeter was calculated by P cal = Φ c t on ∫(T RL (t) − T FL (t)) dt, where T FL and T RL are the temperatures in the feed and return lines of the calorimeter's Author: C.

Hopf, D. Rittich, J. Schäffler, J. Thalhammer. neutron rate when a deuterium beam blip with a pulse duration of ∼4ms was injected into an MHD quiescent ohmic plasma in B t/I p of T/kA. The safety factor Fig. 2 a) Time evolution of the neutron emission rate S n,when the deuterium beam blip is injected into the MHD qui-escent ohmic plasma in B t/I p of T/kA.

b) The. Warren Moos. Johns Hopkins Radial dependence of decay times of emissions from injected impurities in alcator A tokamak. An extreme ultraviolet study of the 2XIIB neutral-beam-heated. Effect of oxygen impurities on the critical properties of the (2×2)-2H/Ni() order-disorder phase transition Article (PDF Available) in Physical review.

B, Condensed matter 52(13) heated plasmas [1, 2]. Herein, the transport analysis of BN impurities injected by LBI into low-density ECR heated p lasmas and into higher -density plasmas created during the neutral beam injection (NBI) heating phase of the TJ -II stellarator is studied.

These regimes representAuthor: B Zurro, J. Velasco, E. Hollmann, A. Baciero, M. Ochando, R. Dux, K. McCarthy, F. Medina. [5] performed on the JET Neutral Beam Test Bed, showed that the probable cause of this deficit was depletion of the gas target due to indirect heating by the beam.

The consequence of this observation for the JET neutral beam injectors is a reduction of neutral beam power delivered to the plasma. A versatile, robust and highly reliable NBI system was built, tested and integrated with the C-2 experiment. NBI improves the plasma performance. The neutral beam is produced by charge exchange between a charged ion beam and a neutral target gas.

It has long been acknowledged that, in practice, the neutralisation efficiency of positive ion beams falls below the theoretical limit and the cause of this has been attributed to either gas heating by the beam [1] or gas pump out to the walls. Trace elements can reduce the fracture resistance of ZrNb pressure tubes.

The effects of hydrogen as hydrides and oxygen as an alloy-strengthening agent are well known, but the contributions of carbon, phosphorus, chlorine, and segregated oxygen have only recently been by: which occurred when hemoglobin 86% saturated with oxygen was mixed with nitrogen-equilibrated buffer.

The observations were made in a 2-cm cuvette with light of rnp at ” in M phosphate buffer, pH The ordinate is percentage of satura- tion with oxygen, the abscissa time.

Hyperthermal neutral beams have a great potential for material processes, especially for etching and thin film deposition for semiconductor and display fabrication as well as deposition for various thin film applications.

Plasma-induced damage during plasma etching is a serious problem for manufacturing deep submicron semiconductor devices and is expected to be a problem for future Cited by: One way to obtain highly pure oxygen is to compress and cool air until it liquefies. Since air is composed primarily of nitrogen and oxygen, liquefying air is an efficient method for obtaining oxygen.

Oxygen liquefies at 88 K (°C). Nitrogen liquefies at 77 K (°C). By cooling to a temperature below 77 K both oxygen and nitrogen Size: KB. positive ion beam through a neutral gas target wherein beam electron-capture collisions result in a neutral beam component.

The subsequent beam injection into the fusion plasma requires the sole use of this neutral component, since the charged component cannot penetrate through the large magnetic confinement fields of the tokamak. The. Oxygen at various flow rates between 0 to 12 sccm was admitted individually for studying the influences of additional oxygen.

The beam energy for sputtering argon ion source was set at eV with a beam current of 50 mA for obtaining a film growth rate of nm/ by: 1.

Chemical Forms and Structure of the Iron Centers and Their Activity. Forms of iron centers present in the Fe–N x –C catalysts and their behavior were studied using in situ (XAS). While the coordination number of the iron center and type of direct neighboring atoms can be identified by Fourier transform (FT) of the extended XAS fine structure (EXAFS), the X-ray absorption near-edge Cited by: Solubility data of metallic and non-metallic impurities in LBE and Pb Solubility data of some metallic elemen ts in pure Pb and liquid eutectic Pb-Bi The procedures used for the determination of the solubility in the liquid metals cause some problems because subsequent chemical reaction or exchange of impurities (oxygen, nitrogen.

Title: Determination of Impurities in Semiconductor-Grade Nitric Acid with the NexION S/S ICP-MS Author: PerkinElmer, Inc. Subject: This work demonstrates the ability of PerkinElmer's NexION /S ICP-MS to remove interferences so that trace levels of impurities in nitric acid (HNO3) can be measured under a single set of hot plasma conditions for all analytes in one analysis.Oxygen Induced Phase Changes in YBa2Cu30, ++ Transport, Structural and Spectroscopic Evidence 85 r 1 OOOO O, O A A J- Fig.

by: 5.Microscopic evidence for role of oxygen in luminescence of Er3+ ions in Si: Two-color and pump- probe spectroscopy S.

Minissale, 1N. Q. Vinh,2 W. de Boer,1 M. S. Bresler,3 and T. Gregorkiewicz 1Van der Waals-Zeeman Institute, University of Amsterdam, Valckenierstr NL XE Amsterdam, The Netherlands 2FOM Institute for Plasma Physics “Rijnhuizen,” NL BE Nieuwegein, The Netherlands.