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1983 Vol. 5, No. 1
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1983, 5(1): 1-5.
Abstract:
In this paper the study of the algorithm which has been done by the author for generating all the Hamiltonian cycles in a graph by a method of Wang algebra is continued. For simplifing the algorithm, a theorem of the constraint of degrees in the Wang...
In this paper the study of the algorithm which has been done by the author for generating all the Hamiltonian cycles in a graph by a method of Wang algebra is continued. For simplifing the algorithm, a theorem of the constraint of degrees in the Wang...
1983, 5(1): 6-15.
Abstract:
The concrete procedure using finite-element method to solve the eigenvalue problem of waveguides filled with inhomogeneous dielectrics is discussed. The relative formula and programs are given. For an example, the field structure analysis and calcula...
The concrete procedure using finite-element method to solve the eigenvalue problem of waveguides filled with inhomogeneous dielectrics is discussed. The relative formula and programs are given. For an example, the field structure analysis and calcula...
1983, 5(1): 16-23.
Abstract:
The doping behavior of sulphur in GaAs vapor phase epitaxy has been studied with the Ga-AsCl3-H2 system. The doping machamsm of sulphur has been discussed and submieron epilayers have been grown. It has been shown that the epitaxial layer obtained ha...
The doping behavior of sulphur in GaAs vapor phase epitaxy has been studied with the Ga-AsCl3-H2 system. The doping machamsm of sulphur has been discussed and submieron epilayers have been grown. It has been shown that the epitaxial layer obtained ha...
1983, 5(1): 24-31.
Abstract:
The dielectric tensor of the longitudinally magnetized relativistically gyrating and drifting electron beam is derived by means of the MHD equations. The coupling coefficients between various eigenmodes are then calculated by regarding the Gyro-TWA a...
The dielectric tensor of the longitudinally magnetized relativistically gyrating and drifting electron beam is derived by means of the MHD equations. The coupling coefficients between various eigenmodes are then calculated by regarding the Gyro-TWA a...
1983, 5(1): 32-37.
Abstract:
This paper describes a method of the design of the transition region of the electron beams from partially shielded cathode. This method is applicable to magnetic focusing structures of the axisymmetric high-density electron beam. Through synthetical ...
This paper describes a method of the design of the transition region of the electron beams from partially shielded cathode. This method is applicable to magnetic focusing structures of the axisymmetric high-density electron beam. Through synthetical ...
1983, 5(1): 38-48.
Abstract:
When T. V. pick-up tube is used under pulsed exposure, one will find the sensitivity of the tube descreases slightly and the quality of the picture degrades. These disadvantages can bo overcome by the use of delay readout and pulsing the cathode with...
When T. V. pick-up tube is used under pulsed exposure, one will find the sensitivity of the tube descreases slightly and the quality of the picture degrades. These disadvantages can bo overcome by the use of delay readout and pulsing the cathode with...
1983, 5(1): 49-53.
Abstract:
In this paper, the structure and the experimental results of a mirrorless FIR laser is described. A tunable TEA CO2 laser is used as its pumping source. Its output energy is about 1J at both 9R(22) and 9P(20) lines. Output energy of 0.5 mJ at =496m i...
In this paper, the structure and the experimental results of a mirrorless FIR laser is described. A tunable TEA CO2 laser is used as its pumping source. Its output energy is about 1J at both 9R(22) and 9P(20) lines. Output energy of 0.5 mJ at =496m i...
1983, 5(1): 54-57.
Abstract:
A method for obtaining pure oxygen by heating silver tube and its device are described. The mass-spectrums of some gases have been measured, and its partial pressures have been calculated. Corresponding oxygen pressures have been obtained when silver...
A method for obtaining pure oxygen by heating silver tube and its device are described. The mass-spectrums of some gases have been measured, and its partial pressures have been calculated. Corresponding oxygen pressures have been obtained when silver...
INFLUENCE OF BAKE-OUT AND Cs VAPOUR ON SOME PROPERTIES OF CHANNEL ELECTRON MULTIPLIER(CEM) IN VACUUM
1983, 5(1): 58-63.
Abstract:
In this paper, the changes of the resistance and the electron gain of the CEM after bake-out at different temperatures and treatment with Cs are examined. It is found, that the transition temperature of the resistance from reversible change into irre...
In this paper, the changes of the resistance and the electron gain of the CEM after bake-out at different temperatures and treatment with Cs are examined. It is found, that the transition temperature of the resistance from reversible change into irre...
1983, 5(1): 64-65.
Abstract:
A new type of dispenser cathode which is fabricated by compressing and sintering a mixture of powdered tungsten carbide, lanthanum and platinum has been developed. It has good properties: high emission current density, good ability of resisting the p...
A new type of dispenser cathode which is fabricated by compressing and sintering a mixture of powdered tungsten carbide, lanthanum and platinum has been developed. It has good properties: high emission current density, good ability of resisting the p...
1983, 5(1): 66-66.
Abstract:
For special microwave devices and precision instruments, the flux density of the permanent magnets has to be a constant over a wide temperature range. It means that a kind of permanent magnetic material with low reversible temperature coefficient is ...
For special microwave devices and precision instruments, the flux density of the permanent magnets has to be a constant over a wide temperature range. It means that a kind of permanent magnetic material with low reversible temperature coefficient is ...
1983, 5(1): 67-68.
Abstract:
This paper presents a new technology of surface treatment of the grid made of molybdenum plate by electric spark machining. Procedures of the new technology are as follows: a. Boiling in 10% NaOH solution; b. Ultrasonic treating with emery + HCl solu...
This paper presents a new technology of surface treatment of the grid made of molybdenum plate by electric spark machining. Procedures of the new technology are as follows: a. Boiling in 10% NaOH solution; b. Ultrasonic treating with emery + HCl solu...
