Results 251 to 260 of about 44,632 (309)

Synthesis and Applications of Novel Low-Dimensional Nanomaterials in Catalysis. [PDF]

Molecules
Lu L.
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Progress and obstacles in electrode materials for lithium-ion batteries: a journey towards enhanced energy storage efficiency. [PDF]

RSC Adv
Khalid R, Shah A, Javed M, Hussain H.
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Effect of water molecules on the diffusions of alkali metal ions in two-dimensional transition metal sulfides. [PDF]

RSC Adv
Tian J, Gu X.
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Physical Processes in Hollow Cathodes

AIAA Journal, 1976
Hollow cathodes with cavity diameters of 1.9 cm have been operated in an MPD arc configuration at discharge currents from 0.25 kA to 30 kA. Current and potential distributions, measured with probes in the cathode cavity, show that a spontaneous mode of hollow cathode operation, wherein the current distribution penetrates upstream into the cavity, has ...
M. KRISHNAN, R. JAHN, W. VON JASKOWSKY, K. CLARK   +3 more
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Hollow cathode magnetron

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1999
A new type of plasma sputtering device, named the hollow cathode magnetron (HCM), has been developed by surrounding a planar magnetron cathode with a hollow cathode structure. Operating characteristics of HCMs, current–voltage (I–V) curves for fixed discharge pressure and voltage–pressure (V–p) curves for fixed cathode current, are measured.
Zhehui Wang, Samuel A. Cohen
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Hollow Cathode Discharge with Thermionic Cathodes

Journal of Applied Physics, 1971
The electrical and visual characteristics of a dc hollow cathode discharge with indirectly heated thermionic cathodes were obtained in argon at a few Torr. Two facing planar cathodes of variable separation form the hollow cathode geometry. A hollow cathode effect was observed in the ``ball-of-fire'' mode and in the ``low-voltage arc'' mode. The results
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SERT II - Durability of the hollow cathode and future applications of hollow cathodes

Journal of Spacecraft and Rockets, 1970
1 Kerslake, W. R., Byers, D. C., and Staggs, J. F., "SERT II Experimental Thruster System," AIAA Paper 67-700, Colorado Springs, Colo., 1967; also "SERT II: Mission and Experiments," Journal of Spacecraft and Rockets, Vol. 7, No. 1, Jan. 1970, pp. 4-6. 2 Kerrisk, D. J. and Kaufman, H. R., "Electric Propulsion Systems for Primary Spacecraft Propulsion,"
VINCENT K. RAWLIN, WILLIAM R. KERSLAKE
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Collisionless instability of the cathode sheath in a hollow-cathode discharge

Physical Review Letters, 1993
High-intensity periodic variations of the potential fall across the cathode sheath are observed in a low-pressure magnetic-field-free hollow-cathode discharge. These potential variations cause modulation of the discharge current, reaching a depth of almost 100%.
, Arbel, , Bar-Lev, , Felsteiner, , Rosenberg, , Slutsker   +4 more
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Note: Coaxial-heater hollow cathode

Review of Scientific Instruments, 2017
The design and tests of a LaB6 hollow cathode with a novel heater are presented. In the new design, the heater wire is completely encapsulated around the cathode tube and a coaxial return electrode, thereby eliminating hot spots on the heater wire due to the free hanging regions. Since the new heater confines the Joule heating to the region of interest,
Huseyin, Kurt, Ugur, Kokal, Nazli, Turan, Murat, Celik   +3 more
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Hollow cathode effects in charge development processes in transient hollow cathode discharges

IEEE Transactions on Plasma Science, 1995
A detailed experimental study of space charge formation and ionization growth in transient hollow cathode discharges (THCD) is presented. The experiment was performed with an applied step voltage up to 30 kV, with rise time less than 50 ns. The discharge was operated in different gases, at pressures in the range 50-750 mTorr, with cathode apertures ...
M. Favre, P. Choi, H. Chuaqui, Y. Kaufman, J. Moreno, E. Wyndham, M. Zambra   +6 more
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