Results 281 to 290 of about 850,090 (318)
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A Metallic Room‐Temperature Oxide Ion Conductor
Angewandte Chemie International Edition, 2014AbstractNanoparticles of Bi3Ir, obtained from a microwave‐assisted polyol process, activate molecular oxygen from air at room temperature and reversibly intercalate it as oxide ions. The closely related structures of Bi3Ir and Bi3IrOx (x≤2) were investigated by X‐ray diffraction, electron microscopy, and quantum‐chemical modeling. In the topochemically
Heise, M. +8 more
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Review of Scientific Instruments, 1994
A low temperature ion source has been developed to produce a plasma with a low ion temperature and a high plasma density by using a gas contact technique. This ion source is a hybrid type consisting of modified plasma compression type cylindrical hollow cathode plasma source and the gas contact chamber with floating potential mounted on the head of the
Shinichi Tanabe +2 more
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A low temperature ion source has been developed to produce a plasma with a low ion temperature and a high plasma density by using a gas contact technique. This ion source is a hybrid type consisting of modified plasma compression type cylindrical hollow cathode plasma source and the gas contact chamber with floating potential mounted on the head of the
Shinichi Tanabe +2 more
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On ion temperature in cryogenic discharge
Bulletin of the Lebedev Physics Institute, 2016The problem of the average ion energy in the gas discharge at cryogenic temperatures is analyzed. The dependences of the average ion energy on the reduced electric field strength and gas temperature are calculated by the Monte-Carlo method. A comparison with published data is performed and universal approximating dependences for all noble gases are ...
R. I. Golyatina, S. A. Maiorov
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Effect of temperature on the mobility of ions
Journal of the American Chemical Society, 1989The effect of temperature, between 87 and 250{degree}C, on the mobility of protonated amines in helium, air, CO{sub 2}, and SF{sub 6} was studied by ion mobility spectrometry. In helium, the reduced mobility was found to decrease as the temperature was raised, due to an increase in the collision cross section, and was approximately proportional to T ...
Zeev Karpas, Zvi Berant, Oded Shahal
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Technical Physics, 2002
The kinetics of alkali metal ion emission from metal surfaces heated to temperatures of 800–2500 K is studied. The ion current relaxation is described by the relationship \(I = Ae^{ - B\sqrt t } + {C \mathord{\left/ {\vphantom {C {\sqrt t }}} \right. \kern-\nulldelimiterspace} {\sqrt t }} + I_0 \).
V. I. Batkin, O. Ya. Savchenko
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The kinetics of alkali metal ion emission from metal surfaces heated to temperatures of 800–2500 K is studied. The ion current relaxation is described by the relationship \(I = Ae^{ - B\sqrt t } + {C \mathord{\left/ {\vphantom {C {\sqrt t }}} \right. \kern-\nulldelimiterspace} {\sqrt t }} + I_0 \).
V. I. Batkin, O. Ya. Savchenko
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Imaging the temperature of trapped ions
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011Thermometry of trapped ions is an important diagnostic for quantum computing and atomic clocks. Existing thermometry techniques for trapped ions rely on spectroscopy, which is vulnerable to systematic errors induced by laser cooling dynamics. High resolution imaging of ion fluorescence provides a steady state thermometry technique which is independent ...
B. G. Norton +4 more
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Ion temperature in the upper atmosphere
Journal of Geophysical Research, 1967The problem of ion temperature in the ionosphere is analyzed in terms of an energy budget that includes heating by the ambient electron gas, cooling by the different gases of the neutral atmosphere, and thermal conduction along the lines of geomagnetic force.
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Ion temperature in the TFR tokamak
Nuclear Fusion, 1976Measurements of the TFR plasma ion temperature over a wide range (300 eV ≤Ti≤ 1000 eV) have shown that the ion energy balance could be explained by losses following a 'plateau' dependence, the ion-ion collision frequency being increased by the presence of impurities.
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Ion Temperature Measurement Using Ion-Sensitive Probe
Japanese Journal of Applied Physics, 2005The ion current of ion-sensitive probes is investigated on the basis of a numerical analysis of ion orbits. Each ion-sensitive probe investigated in this study consists of a central electrode and a guard electrode, which are biased to an identical potential, V, against ambient plasma.
Akira Tsushima, Yuichi Tayama
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Ion-acoustic solitons in plasmas with two-temperature ions
Physics of Plasmas, 2008This paper discusses the existence of ion-acoustic solitons in a plasma consisting of hot and cool ions, and hot electrons, where the words “hot” and “cool” reflect the ratio of thermal effects to inertial effects. For the hot species general polytropic pressure relations are considered, as well as the isothermal limit, γ=1 (Boltzmann distribution). It
Manfred A. Hellberg, Frank Verheest
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