Multistage depressed electrostatic collector for magnetically focused space borne klystrons Final report
Multistage depressed electrostatic collector for magnetically focused spaceborne klystrons
Mihran, T. G.↗
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Analytic study of a depressed collector for linear beam microwave amplifiers Final report
Analytic evaluation of depressed collector for linear beam microwave amplifiers
Mihran, T. G.↗
A novel, axisymmetric, electrostatic collector for linear beam microwave tubes
Mathematical model for depressed beam collector of traveling wave tube
Kosmahl, H. G.↗
Ionization vacuum gauge with all but the end of the ion collector shielded Patent
Describing hot filament type Bayard-Alpert ionization gage with ion collector buried or removed from grid structure
Clay, F. P., Jr.↗
Performance of a ten-stage electrostatic depressed collector for klystrons
Computational method for determining performance of ten stage electrostatic depressed collector for klystrons
Mihran, T. G.↗
Evaluation of novel depressed collector for linear-beam microwave tubes
Evaluation tests to demonstrate feasibility of increasing efficiency of linear beam microwave tubes using novel depressed collector
Alexovich, R. E.↗
Multistage depressed collector investigation for traveling-wave tubes Final report
Methods for analyzing multistage electron beam collector schemes, with and without transverse magnetic fields, for traveling wave tubes
Tammaru, I.↗
Correlation expression for the performance of an etched-rhenium emitter, niobium collector, cesiated thermionic converter
Numerical analysis of relationship between current, voltage, emitter temperature, and collector temperature of cesiated thermionic converter
Breitwieser, R.↗
Performance of a modified buried collector gauge
Modified buried collector gauge performance over He pressure range, determining sensitivity dependence on filament geometry
Beitel, G. A.↗
High power electrical breakdown tests of cracked-insulator collector sheaths with flowing liquid metal coolant
Breakdown voltage and high power tests for pressure bonded collector sheath tubes with cracked alumina insulators and flowing liquid metal coolant
Danko, J. C.↗
Performance of a ten-stage electrostatic depressed collector for klystrons
Klystron power conversion efficiency augmentation by electrostatic depressed collector design, presenting performance prediction calculation method
Mihran, T. G.↗
High efficiency collector for microwave tubes
Depressed collector has basic configuration of a dish with a central cone and protruding spike. This geometry velocity sorts and slows the electrons down to minimum velocity at collection, and prevents backstreaming of secondaries and reflected primaries into interaction region of the tube.
Kosmahl, H. C.↗
Numerical method and FORTRAN program for the solution of an axisymmetric electrostatic collector design problem
The numerical calculation is described of the steady-state flow of electrons in an axisymmetric, spherical, electrostatic collector for a range of boundary conditions. The trajectory equations of motion are solved alternately with Poisson's equation for the potential field until convergence is achieved. A direct (noniterative) numerical technique is used to obtain the solution to Poisson's equation. Space charge effects are included for initial current densities as large as 100 A/sq cm. Ways of dealing successfully with the difficulties associated with these high densities are discussed. A description of the mathematical model, a discussion of numerical techniques, results from two typical runs, and the FORTRAN computer program are included.
Reese, O. W.↗
Comparative performance of twenty-three types of flat plate solar energy collectors
Report compares efficiencies of 23 solar collectors for four different purposes: operating a Rankine-cycle engine, heating or absorption air conditioning, heating hot water, and heating a swimming pool.
Simon, F. F.↗
Effect of grid transparency and finite collector size on determining ion temperature and density by the retarding potential analyzer
The effects of the grid transparency and finite collector size on the values of thermal ion density and temperature determined by the standard RPA (retarding potential analyzer) analysis method are investigated. The current-voltage curves calculated for varying RPA parameters and a given ion mass, temperature, and density are analyzed by the standard RPA method. It is found that only small errors in temperature and density are introduced for an RPA with typical dimensions, and that even when the density error is substantial for nontypical dimensions, the temperature error remains minimum.
Troy, B. E., Jr.↗
Horizontally-mounted solar collector
System consists of three major components: vertical deflector assembly, stationary reflector, and motor driven tracking mechanism. Deflector assembly directs incident incoming energy to a vertical direction, using series of horizontally mounted vanes. Energy is then redirected via reflector to fixed collector.
Black, D. H.↗
Performance of a solar-thermal collector
Possible means of achieving the technology required for field application of solar thermal power systems are discussed. Simplifications in construction techniques as well as in measurement techniques for parabolic trough collectors are described. Actual measurement data is also given.
Higa, W. H.↗