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RSS2006 Vol. 18, No. 04
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2006,
18.
Abstract:
The tapered coaxial slow-wave-structure is the most important part of a MILO. According to the Maxwell equations and Floquet’s theorem, the dispersion function of TM modes in the tapered MILO is derived in this paper. Through numerical calculation, t...
The tapered coaxial slow-wave-structure is the most important part of a MILO. According to the Maxwell equations and Floquet’s theorem, the dispersion function of TM modes in the tapered MILO is derived in this paper. Through numerical calculation, t...
2006,
18.
Abstract:
Negative refractive index materials are artificial materials with permittivity and permeability both negative within certain microwave frequency band. FDTD method is used to simulate the distribution of electromagnetic field inside and around the neg...
Negative refractive index materials are artificial materials with permittivity and permeability both negative within certain microwave frequency band. FDTD method is used to simulate the distribution of electromagnetic field inside and around the neg...
2006,
18.
Abstract:
Dispersion and interaction impedance of two kinds of vane-loaded helical SWS were measured in 2～18 GHz with Agilent8510C Vector Network Analyzer. The measurement system was represented by proper microwave network and a formula to modify phase shift o...
Dispersion and interaction impedance of two kinds of vane-loaded helical SWS were measured in 2～18 GHz with Agilent8510C Vector Network Analyzer. The measurement system was represented by proper microwave network and a formula to modify phase shift o...
2006,
18.
Abstract:
The tapered coaxial slow-wave-structure is the most important part of a MILO. According to the Maxwell equations and Floquet’s theorem, the dispersion function of TM modes in the tapered MILO is derived in this paper. Through numerical calculation, t...
The tapered coaxial slow-wave-structure is the most important part of a MILO. According to the Maxwell equations and Floquet’s theorem, the dispersion function of TM modes in the tapered MILO is derived in this paper. Through numerical calculation, t...
2006,
18.
Abstract:
Certain gyro-type devices, including moderately high power, high harmonic gyrotrons, gyro-TWT and peniotrons, require an axis encircling electron beam. To develop practical and efficient devices of this type, it is necessary to first develop a gun th...
Certain gyro-type devices, including moderately high power, high harmonic gyrotrons, gyro-TWT and peniotrons, require an axis encircling electron beam. To develop practical and efficient devices of this type, it is necessary to first develop a gun th...
2006,
18.
Abstract:
Based on the MAFIA simulation platform, the effects of helix pitch on dispersion, interaction impedance and attenuation characteristics are analyzed for an ultra-wide band(4~18 GHz) helical slow-wave structure. The rules of the cold-test characterist...
Based on the MAFIA simulation platform, the effects of helix pitch on dispersion, interaction impedance and attenuation characteristics are analyzed for an ultra-wide band(4~18 GHz) helical slow-wave structure. The rules of the cold-test characterist...
2006,
18.
Abstract:
By use of such theories as lossy transmission line, microwave equivalent circuits, network matrix of electromagnetism and so on, this paper analyses the process of energy storage and energy dumping of the cavity of the excessive modes cylindrical cav...
By use of such theories as lossy transmission line, microwave equivalent circuits, network matrix of electromagnetism and so on, this paper analyses the process of energy storage and energy dumping of the cavity of the excessive modes cylindrical cav...
2006,
18.
Abstract:
An improved three-wave-coupling model of optical parametric chirped pulse amplification（OPCPA） including the effects of phase mismatching, pulse temporal profile and synchronization-time jitter was presented in this paper. With the model, we investig...
An improved three-wave-coupling model of optical parametric chirped pulse amplification（OPCPA） including the effects of phase mismatching, pulse temporal profile and synchronization-time jitter was presented in this paper. With the model, we investig...
2006,
18.
Abstract:
In this paper, a new method is proposed to effectively lower the high temperature, smooth the thermal stress and reduce the thermal deformation of mirrors in high power laser systems utilizing functionally graded materials (FGMs). Two kinds of laser ...
In this paper, a new method is proposed to effectively lower the high temperature, smooth the thermal stress and reduce the thermal deformation of mirrors in high power laser systems utilizing functionally graded materials (FGMs). Two kinds of laser ...
2006,
18.
Abstract:
The possibility of phase locking high-order lateral modes of broad-stripe laser diode array (LDA) with a short external cavity is analyzed theoretically. The far field pattern of multi-lateral modes, which comprises a main lobe and side lobes, is obs...
The possibility of phase locking high-order lateral modes of broad-stripe laser diode array (LDA) with a short external cavity is analyzed theoretically. The far field pattern of multi-lateral modes, which comprises a main lobe and side lobes, is obs...
2006,
18.
Abstract:
The transmission characteristics of the hollow dielectric film-coated waveguide for THz radiation are theoretically analyzed, and the eigenequation and the mode distribution of the waveguide are obtained. The relationship between attenuation coeffici...
The transmission characteristics of the hollow dielectric film-coated waveguide for THz radiation are theoretically analyzed, and the eigenequation and the mode distribution of the waveguide are obtained. The relationship between attenuation coeffici...
2006,
18.
Abstract:
A complicated nonlinear dynamical system——cross-injection locking diode lasers system is proposed. Equations are derived for the simplest system which is composed of two lasers only, and the locked steady-state analytical solutions are obtained for t...
A complicated nonlinear dynamical system——cross-injection locking diode lasers system is proposed. Equations are derived for the simplest system which is composed of two lasers only, and the locked steady-state analytical solutions are obtained for t...
2006,
18.
Abstract:
From the theory of uniform-field electrodes, profiles of electrodes, theoretical and practical distributions of electric field on the surface of near Rogowski electrode, Chang electrode (including compact Chang electrode) and Ernst electrode were cal...
From the theory of uniform-field electrodes, profiles of electrodes, theoretical and practical distributions of electric field on the surface of near Rogowski electrode, Chang electrode (including compact Chang electrode) and Ernst electrode were cal...
2006,
18.
Abstract:
The temperature-related laser performances of the Yb3+:YAG slab laser have been investigated based on quasi-three level rate equation model, which include the energy storage and extraction efficiency. The results show that the extractable energy stor...
The temperature-related laser performances of the Yb3+:YAG slab laser have been investigated based on quasi-three level rate equation model, which include the energy storage and extraction efficiency. The results show that the extractable energy stor...
2006,
18.
Abstract:
The Trigonometric-function operator is put forward as a novoel image segmentation arithmetic. It is deduced by the principle of optical interference and applied in fast image segmentation. The hardware of Trigonometric-function operator is analyzed. ...
The Trigonometric-function operator is put forward as a novoel image segmentation arithmetic. It is deduced by the principle of optical interference and applied in fast image segmentation. The hardware of Trigonometric-function operator is analyzed. ...
2006,
18.
Abstract:
This paper expatiates on the theory of a distributed infrared optical fiber Raman temperature sensor on the infrared double wavelength with a Er doped waveguide amplifier. For restraining the amplifier ASE increase and the temperature excursion accum...
This paper expatiates on the theory of a distributed infrared optical fiber Raman temperature sensor on the infrared double wavelength with a Er doped waveguide amplifier. For restraining the amplifier ASE increase and the temperature excursion accum...
2006,
18.
Abstract:
Influence of doping on transmission properties of two-dimensional photonic crystals is analyzed numerically in the paper. The crystals’ transmission spectra are obtained by numerical calculation with plane wave expansion method. The results show that...
Influence of doping on transmission properties of two-dimensional photonic crystals is analyzed numerically in the paper. The crystals’ transmission spectra are obtained by numerical calculation with plane wave expansion method. The results show that...
2006,
18.
Abstract:
Beam quality measurement is very important for high power laser facility. It ensures the facility work in a safe state and offers parameters to beam control system at the same time .Using radial shearing interferometer (RSI) based on spatial phase mo...
Beam quality measurement is very important for high power laser facility. It ensures the facility work in a safe state and offers parameters to beam control system at the same time .Using radial shearing interferometer (RSI) based on spatial phase mo...
2006,
18.
Abstract:
Bubbles caused by laser irradiation can be observed usually via microscope during the experiments of laser induced damage of films, each bubble looks large and very symmetry. From the point of gasification of impurity, we have analyzed the formation ...
Bubbles caused by laser irradiation can be observed usually via microscope during the experiments of laser induced damage of films, each bubble looks large and very symmetry. From the point of gasification of impurity, we have analyzed the formation ...
2006,
18.
Abstract:
Third harmonic beam splitter at 355 nm was deposited on silica substrates by electron beam evaporation and photoelectric maximum control method. Part of the samples were annealed in air at 250 ℃ for 3 hours. The optical transmittance of samples was m...
Third harmonic beam splitter at 355 nm was deposited on silica substrates by electron beam evaporation and photoelectric maximum control method. Part of the samples were annealed in air at 250 ℃ for 3 hours. The optical transmittance of samples was m...
2006,
18.
Abstract:
This paper presents the ab initio calculations results of K vacancy in KDP crystals. The electronic structures and formation energy as well as the relaxing configuration of K vacancy were detailedly studied. The properties of density of states and ba...
This paper presents the ab initio calculations results of K vacancy in KDP crystals. The electronic structures and formation energy as well as the relaxing configuration of K vacancy were detailedly studied. The properties of density of states and ba...
2006,
18.
Abstract:
Laser-induced damage of a single 500 nm HfO2 film and a single 500 nm ZrO2 film were studied with single- and multi-pulse femtosecond laser. The laser-induced damage thresholds (LIDT) of both samples by the 1-on-1 method and the 1 000-on -1 method we...
Laser-induced damage of a single 500 nm HfO2 film and a single 500 nm ZrO2 film were studied with single- and multi-pulse femtosecond laser. The laser-induced damage thresholds (LIDT) of both samples by the 1-on-1 method and the 1 000-on -1 method we...
2006,
18.
Abstract:
An optical system was designed. It can be applied in monitoring the real-time bouncing status of ICF target micro-sphere with 0.2~1.0 mm in diameter. A ring Light Emitting Diode (LED) for specific illumination was designed, and through the Petzval ob...
An optical system was designed. It can be applied in monitoring the real-time bouncing status of ICF target micro-sphere with 0.2~1.0 mm in diameter. A ring Light Emitting Diode (LED) for specific illumination was designed, and through the Petzval ob...
2006,
18.
Abstract:
The Ag coating Cu bimetallic nano-powders were synthesized by substitution reaction with AgNO3.The synthesis process was discussed and the bimetallic powders were characterized by TEM, EDXS and XRD. The experimental results indicate that the bimetall...
The Ag coating Cu bimetallic nano-powders were synthesized by substitution reaction with AgNO3.The synthesis process was discussed and the bimetallic powders were characterized by TEM, EDXS and XRD. The experimental results indicate that the bimetall...
2006,
18.
Abstract:
Gas-barrier material-polyvinyl alcohol (PVA) of multilayer laser microsphere was cross linked by glutaraldehyde (GA) in order to improve the gas-barrier properties of microsphere. Different content of GA, from 300 μL to 1 700 μL were added into the i...
Gas-barrier material-polyvinyl alcohol (PVA) of multilayer laser microsphere was cross linked by glutaraldehyde (GA) in order to improve the gas-barrier properties of microsphere. Different content of GA, from 300 μL to 1 700 μL were added into the i...
2006,
18.
Abstract:
This paper describes a new data acquisition system for middle speed and low speed signal in ICF experiments, i.e., the FF detector. It is made up of two parts : the standard modular hardware based on VXI bus and the flexible software application deve...
This paper describes a new data acquisition system for middle speed and low speed signal in ICF experiments, i.e., the FF detector. It is made up of two parts : the standard modular hardware based on VXI bus and the flexible software application deve...
2006,
18.
Abstract:
A new experimental method to measure the surface scattering and volume scattering of the K9 glass substrate by the total integrated scattering(TIS) was presented. Ag film with a few ten nanometers thickness was deposited by magnetron sputtering, whic...
A new experimental method to measure the surface scattering and volume scattering of the K9 glass substrate by the total integrated scattering(TIS) was presented. Ag film with a few ten nanometers thickness was deposited by magnetron sputtering, whic...
2006,
18.
Abstract:
The experimental results of focal spot measured with schlieren method were reported in this paper. The far field focal spot was enlarged by an imaging lens and collected by a scientific-grade CCD camera with 12 bit. Schlieren data were taken by shadi...
The experimental results of focal spot measured with schlieren method were reported in this paper. The far field focal spot was enlarged by an imaging lens and collected by a scientific-grade CCD camera with 12 bit. Schlieren data were taken by shadi...
2006,
18.
Abstract:
Atom hologram lithography employs binary computer generated hologram to handle atoms for making microstructure. The conventional binary hologram is inconvenient because it often has more than one reconstructed images. A new method of amplitude-only e...
Atom hologram lithography employs binary computer generated hologram to handle atoms for making microstructure. The conventional binary hologram is inconvenient because it often has more than one reconstructed images. A new method of amplitude-only e...
2006,
18.
Abstract:
By comparing the kinematical equation of a shock wave in free air, the study of transmission characteristics of the laser plasma shock wave in Compton scattering is presented. The results show that the attenuation course of the kinematics of he laser...
By comparing the kinematical equation of a shock wave in free air, the study of transmission characteristics of the laser plasma shock wave in Compton scattering is presented. The results show that the attenuation course of the kinematics of he laser...
2006,
18.
Abstract:
Based on the performance requirement of the ignitor, raw materials such as B4C and BN were chosen to produce a new type of ignitor with no poison, high igniting and good performance with powder metallurgy technology. The microcosmic structure of the...
Based on the performance requirement of the ignitor, raw materials such as B4C and BN were chosen to produce a new type of ignitor with no poison, high igniting and good performance with powder metallurgy technology. The microcosmic structure of the...
2006,
18.
Abstract:
The spectacular progress made during the last few years in rod-pinch diode(RPD) research opens new perspectives of flash X-ray radiography, especially in the small-scale hydrodynamic experiments. This survey covers essentially all aspects of RPD with...
The spectacular progress made during the last few years in rod-pinch diode(RPD) research opens new perspectives of flash X-ray radiography, especially in the small-scale hydrodynamic experiments. This survey covers essentially all aspects of RPD with...
2006,
18.
Abstract:
A pair of superconducting quadrupole(SCQ) magnets are applied for Beijing Electron-Positron Collider Upgrade (BEPC Ⅱ). The magnet can be destroyed by the excess mechanical stress caused by thermal gradients during the cool-down and warm-up processes....
A pair of superconducting quadrupole(SCQ) magnets are applied for Beijing Electron-Positron Collider Upgrade (BEPC Ⅱ). The magnet can be destroyed by the excess mechanical stress caused by thermal gradients during the cool-down and warm-up processes....
2006,
18.
Abstract:
Based on the results of the DC-SC photocathode injector experiments at Peking University, an improved design of the injector is proposed. The new injector can provide both high average power electron beams with bunch charge of 100 pC, repetition rate...
Based on the results of the DC-SC photocathode injector experiments at Peking University, an improved design of the injector is proposed. The new injector can provide both high average power electron beams with bunch charge of 100 pC, repetition rate...
2006,
18.
Abstract:
A 0-dimension model of laser triggered SF6 gap switch is established and the numerical results compared with a series of experimental data presented by Woodworth and Li hong-tao in the paper. The calculated delay is in agreement with the experimental...
A 0-dimension model of laser triggered SF6 gap switch is established and the numerical results compared with a series of experimental data presented by Woodworth and Li hong-tao in the paper. The calculated delay is in agreement with the experimental...
2006,
18.
Abstract:
This paper describes a Multiwire Proportional Chamber (MWPC) for the Test Beam on BEPC(Beijing Electron Positron Colider). The distance between the anode surface and the cathode surface of the MWPC is 6 mm. Both surfaces are made of gold-plated tungs...
This paper describes a Multiwire Proportional Chamber (MWPC) for the Test Beam on BEPC(Beijing Electron Positron Colider). The distance between the anode surface and the cathode surface of the MWPC is 6 mm. Both surfaces are made of gold-plated tungs...
2006,
18.
Abstract:
In order to find out the invalidation of submicrometer semiconductor devices under different microwave pulses, the author developed a simulation program based on the hydrodynamic method (HDM). Coupled Newton method was used in the program to solve no...
In order to find out the invalidation of submicrometer semiconductor devices under different microwave pulses, the author developed a simulation program based on the hydrodynamic method (HDM). Coupled Newton method was used in the program to solve no...
Experiment research of solid-state pulsed power generator for pulsed plasma induced chemical process
2006,
18.
Abstract:
The paper presents a solid-state pulsed power generator, which is based on the integrated technology of semiconductor switch, magnetic switch and saturable pulse transformer. This pulsed power generator is used for pulsed plasma induced chemical proc...
The paper presents a solid-state pulsed power generator, which is based on the integrated technology of semiconductor switch, magnetic switch and saturable pulse transformer. This pulsed power generator is used for pulsed plasma induced chemical proc...
2006,
18.
Abstract:
Gas temperature decay is the primary factor which restricts the repetitive operation of spark switch. The gas temperature decay in gas spark switch after operation is simulated based on fluent equation, thermal conductivity equation and general gas l...
Gas temperature decay is the primary factor which restricts the repetitive operation of spark switch. The gas temperature decay in gas spark switch after operation is simulated based on fluent equation, thermal conductivity equation and general gas l...
2006,
18.
Abstract:
By the two-dimensional finite-difference time-domain simulation, the damage of bipolar junction transistor(BJT) under high power electromagnetic pulses was studied, considering the different response of BJT under the electro-magnetic pulse injected f...
By the two-dimensional finite-difference time-domain simulation, the damage of bipolar junction transistor(BJT) under high power electromagnetic pulses was studied, considering the different response of BJT under the electro-magnetic pulse injected f...
2006,
18.
Abstract:
The bubble breakdown theories of liquid that summarizes of the experimental data of the Siberian Research Institute of Energetic in Russia is presented in this paper. The breakdown experiments of the water switch have been done under the two short pu...
The bubble breakdown theories of liquid that summarizes of the experimental data of the Siberian Research Institute of Energetic in Russia is presented in this paper. The breakdown experiments of the water switch have been done under the two short pu...
2006,
18.
Abstract:
The transportation experiments of high power ion beams(HPIB) on the FLASH Ⅱ accelerator are presented. The transportation of HPIB in different transporting conditions and distances was studied. The influence of neutralization on the radius of beam an...
The transportation experiments of high power ion beams(HPIB) on the FLASH Ⅱ accelerator are presented. The transportation of HPIB in different transporting conditions and distances was studied. The influence of neutralization on the radius of beam an...
