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RSS2009 Vol. 21, No. 01
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2009,
21.
Abstract:
The gas circulation system in TEA CO2 laser is very important. The parameters, the structure and the design of the system are analyzed. A symmetric structure is adopted and an axial blower and a plate-fin heat exchanger are selected. Using volume flu...
The gas circulation system in TEA CO2 laser is very important. The parameters, the structure and the design of the system are analyzed. A symmetric structure is adopted and an axial blower and a plate-fin heat exchanger are selected. Using volume flu...
2009,
21.
Abstract:
By analyzing the turbulent impinging jets of fluid jet polishing, the article established two physical models for the fluid jet polishing: vertical and oblique impinging jets models. Researched the characteristics of fluid jet polishing, found that t...
By analyzing the turbulent impinging jets of fluid jet polishing, the article established two physical models for the fluid jet polishing: vertical and oblique impinging jets models. Researched the characteristics of fluid jet polishing, found that t...
2009,
21.
Abstract:
The influences of the pump absorption coefficient on the temperature distribution along the fiber are analyzed for fiber lasers in theory based on the thermal conduction equations. It is shown that the temperature of the fiber with low absorption coe...
The influences of the pump absorption coefficient on the temperature distribution along the fiber are analyzed for fiber lasers in theory based on the thermal conduction equations. It is shown that the temperature of the fiber with low absorption coe...
2009,
21.
Abstract:
A continuous wave DF/HF chemical laser adopting TRIP technique has been numerically studied. According to the 3 dimensional flowfield with chemical reaction and without lasing, the simulation results show that the mixing enhancement of TRIP jets is o...
A continuous wave DF/HF chemical laser adopting TRIP technique has been numerically studied. According to the 3 dimensional flowfield with chemical reaction and without lasing, the simulation results show that the mixing enhancement of TRIP jets is o...
2009,
21.
Abstract:
A math model of beam quality control has been established and the beam quality evaluation parameter is presented. A duallenses beam quality optimized optical system has been designed for the small measuring probe. It not only keeps beam uniformity b...
A math model of beam quality control has been established and the beam quality evaluation parameter is presented. A duallenses beam quality optimized optical system has been designed for the small measuring probe. It not only keeps beam uniformity b...
2009,
21.
Abstract:
Structured background suppression is difficult for dim and small targets detection.bilateral filtering could get information of image geometric, photometric and local structure similarites, and is non-iterative, local and simple, a background suppres...
Structured background suppression is difficult for dim and small targets detection.bilateral filtering could get information of image geometric, photometric and local structure similarites, and is non-iterative, local and simple, a background suppres...
Frequency-response characteristics of dispersed support for the surface of large-aperture components
2009,
21.
Abstract:
In the case of the multi-point support for a thin mirror with a diameter of 600 mm, the paper studied the frequency-response of components’ surface, which was influenced by different support schemes. A one-dimensional beam model of dispersed support ...
In the case of the multi-point support for a thin mirror with a diameter of 600 mm, the paper studied the frequency-response of components’ surface, which was influenced by different support schemes. A one-dimensional beam model of dispersed support ...
2009,
21.
Abstract:
Based on the propagation model for the wideband ultra-short pulse, the coupled equations which determine the interaction process among pump, idle and signal pulses in the LBO crystal are studied by the fourth-order Runge-Kutta methods. The simulation...
Based on the propagation model for the wideband ultra-short pulse, the coupled equations which determine the interaction process among pump, idle and signal pulses in the LBO crystal are studied by the fourth-order Runge-Kutta methods. The simulation...
2009,
21.
Abstract:
A high-Coulomb two-electrode spark gap switch was developed. Its static characteristic was studied and the fitting formula for its self-breakdown probability was derived. It is found that the self-breakdown voltage increases linearly with the working...
A high-Coulomb two-electrode spark gap switch was developed. Its static characteristic was studied and the fitting formula for its self-breakdown probability was derived. It is found that the self-breakdown voltage increases linearly with the working...
2009,
21.
Abstract:
In order to enhance the returned photon numbers in lunar laser ranging, adaptive optics is considered to be applied to the 1.2 m telescope of Yunnan observatory to correct the telescope tracking error and the laser beam jitter caused by the turbulenc...
In order to enhance the returned photon numbers in lunar laser ranging, adaptive optics is considered to be applied to the 1.2 m telescope of Yunnan observatory to correct the telescope tracking error and the laser beam jitter caused by the turbulenc...
2009,
21.
Abstract:
The optical gradient force patterns in focal region of radially polarized beams is investigated. The pure phase plate consists of three concentric zones: center circle zone, inner annular zone and outer annular zone. And the phase variance of annular...
The optical gradient force patterns in focal region of radially polarized beams is investigated. The pure phase plate consists of three concentric zones: center circle zone, inner annular zone and outer annular zone. And the phase variance of annular...
2009,
21.
Abstract:
A nanopoporous copper was synthesized by free corrosion dealloying in the 0.1 mol/L HCl solution. Micro-structure and composition of the sample before and after dealloying were characterized by a scanning electron microscope and an energy dispersive ...
A nanopoporous copper was synthesized by free corrosion dealloying in the 0.1 mol/L HCl solution. Micro-structure and composition of the sample before and after dealloying were characterized by a scanning electron microscope and an energy dispersive ...
2009,
21.
Abstract:
Based on the fundamental theory of improving structure stability, with the finite-element method (FEM), the research on the structure stability of the superstructure was performed. The results indicates that the third modal shape of the superstructur...
Based on the fundamental theory of improving structure stability, with the finite-element method (FEM), the research on the structure stability of the superstructure was performed. The results indicates that the third modal shape of the superstructur...
2009,
21.
Abstract:
A planar cryotarget system for the inertial-confinement-fusion(ICF) experiments was set up with the low-temperature resource provided by a Gifford-McMahon cryocooler. The cooling power and the cooling rate of the planar cryotarget system were examine...
A planar cryotarget system for the inertial-confinement-fusion(ICF) experiments was set up with the low-temperature resource provided by a Gifford-McMahon cryocooler. The cooling power and the cooling rate of the planar cryotarget system were examine...
2009,
21.
Abstract:
Nano-crystalline beryllium-Coppery BeCu alloy is prepared by the melt-spin method. It was characterized by X-ray diffraction,scanning electron microscope and electron spectroscopy,and its structure was compared with of the original state of the alloy...
Nano-crystalline beryllium-Coppery BeCu alloy is prepared by the melt-spin method. It was characterized by X-ray diffraction,scanning electron microscope and electron spectroscopy,and its structure was compared with of the original state of the alloy...
2009,
21.
Abstract:
The temporal and spectral characteristic of two stacked chirped pulses are given based on the principle and model of the chirped pulse stacking. And the temporal modulation, spectral modulation and the nonlinear frequency chirp are analyzed. Some cha...
The temporal and spectral characteristic of two stacked chirped pulses are given based on the principle and model of the chirped pulse stacking. And the temporal modulation, spectral modulation and the nonlinear frequency chirp are analyzed. Some cha...
2009,
21.
Abstract:
Low-density hydrophobic silica aerogels were produced by modification of conventional silica aerogels via substitution of －OH groups by trimethylsilyls. IR spectra and thermogravimeturic anglyses were to characterize the aerogels before and after mod...
Low-density hydrophobic silica aerogels were produced by modification of conventional silica aerogels via substitution of －OH groups by trimethylsilyls. IR spectra and thermogravimeturic anglyses were to characterize the aerogels before and after mod...
2009,
21.
Abstract:
The gas-filled hohlraum targets is one of the most important targets in the inertial confinement fusion experiments. There are three ways to fill the hohlraum with necessary gases: filling gas at the same time of or before the shot, or before the exp...
The gas-filled hohlraum targets is one of the most important targets in the inertial confinement fusion experiments. There are three ways to fill the hohlraum with necessary gases: filling gas at the same time of or before the shot, or before the exp...
2009,
21.
Abstract:
A procedure of synthesis of organic/inorganic hybrid wetgels derived from methacryloxypropyltrimethoxysilane based silsesquioxane(MPMS-SSO) by ultra-violet ray(UV) cure was demonstrated. Hybrid aerogels were obtained through CO2 supercritical fluid d...
A procedure of synthesis of organic/inorganic hybrid wetgels derived from methacryloxypropyltrimethoxysilane based silsesquioxane(MPMS-SSO) by ultra-violet ray(UV) cure was demonstrated. Hybrid aerogels were obtained through CO2 supercritical fluid d...
2009,
21.
Abstract:
A cyclotron superradiance(SR) which combines the merits of cyclotron and SR has a potential advantage in developing superradiant HPM sources operating at millimeter and submillimeter wavebands. The working characteristics of the cyclotron SR was anal...
A cyclotron superradiance(SR) which combines the merits of cyclotron and SR has a potential advantage in developing superradiant HPM sources operating at millimeter and submillimeter wavebands. The working characteristics of the cyclotron SR was anal...
2009,
21.
Abstract:
Three-dimensional fluid equations, steady-state differential equation and reasonable boundary conditions of cylindrical hollow cathode are presented, some parameters have been calculated such as particle density distribution, electron energy and the ...
Three-dimensional fluid equations, steady-state differential equation and reasonable boundary conditions of cylindrical hollow cathode are presented, some parameters have been calculated such as particle density distribution, electron energy and the ...
2009,
21.
Abstract:
The microwave discharge experiments of dielectric window were performed in vacuum under X-band HPM with the frequency of 9.4 GHz and the power of 1 GW. Several typical dielectric window materials, i.e., PTFE, PMMA, LDPE and HDPE, were employed, and t...
The microwave discharge experiments of dielectric window were performed in vacuum under X-band HPM with the frequency of 9.4 GHz and the power of 1 GW. Several typical dielectric window materials, i.e., PTFE, PMMA, LDPE and HDPE, were employed, and t...
2009,
21.
Abstract:
Physical model for the X-band dual-frequency coaxial relativistic backward wave oscillator(RBWO) was suggested. The dispersion equation and the dispersion properties of the coaxial SWS were numerically investigated. The properties of dual-frequency R...
Physical model for the X-band dual-frequency coaxial relativistic backward wave oscillator(RBWO) was suggested. The dispersion equation and the dispersion properties of the coaxial SWS were numerically investigated. The properties of dual-frequency R...
2009,
21.
Abstract:
With the purpose of evaluating the ability for a metallic rectangular enclosure with an array of circular apertures and a printed circuit board(PCB) against the external electromagnetic interference, a waveguide equivalent circuit model was establish...
With the purpose of evaluating the ability for a metallic rectangular enclosure with an array of circular apertures and a printed circuit board(PCB) against the external electromagnetic interference, a waveguide equivalent circuit model was establish...
2009,
21.
Abstract:
The propagation attenuation characteristics of electromagnetic wave penetrating different media are analyzed applying the theory of the electromagnetic plane wave and Fresnel formulas. They are numerically compared by adopting different parameters su...
The propagation attenuation characteristics of electromagnetic wave penetrating different media are analyzed applying the theory of the electromagnetic plane wave and Fresnel formulas. They are numerically compared by adopting different parameters su...
2009,
21.
Abstract:
With ion beam assisted reactive deposition, hafnia films were prepared at different bias voltages of the APS ion source in the range from 50 V to 140 V on silicon disks and ultraviolet quartz glasses (JGS1) in the Leybold APS 1 104 coating system, wh...
With ion beam assisted reactive deposition, hafnia films were prepared at different bias voltages of the APS ion source in the range from 50 V to 140 V on silicon disks and ultraviolet quartz glasses (JGS1) in the Leybold APS 1 104 coating system, wh...
2009,
21.
Abstract:
The Rayleigh scattering method is widely adopted in measuring cluster size. In general, it is considered that the intensity of scattering corresponds to the cluster size directly. However, this paper deduces that the intensity is not only related to ...
The Rayleigh scattering method is widely adopted in measuring cluster size. In general, it is considered that the intensity of scattering corresponds to the cluster size directly. However, this paper deduces that the intensity is not only related to ...
2009,
21.
Abstract:
In order to reduce the influence of scatter for radiography and increase the precision of the reconstructed object, the double-axis radiography system is proposed on the basis of using specific collimators. The double-axis radiography system has one ...
In order to reduce the influence of scatter for radiography and increase the precision of the reconstructed object, the double-axis radiography system is proposed on the basis of using specific collimators. The double-axis radiography system has one ...
2009,
21.
Abstract:
Properties for metamaterial electromagnetic cloak with elliptical volume under TE wave irradiation are analyzed using finite element method (FEM). Computation results show that 0.5% deviation of the permittivity, permeability and conductivity from th...
Properties for metamaterial electromagnetic cloak with elliptical volume under TE wave irradiation are analyzed using finite element method (FEM). Computation results show that 0.5% deviation of the permittivity, permeability and conductivity from th...
2009,
21.
Abstract:
In order to obtain the most suitable optical fields to trap the Rayleigh particles, the expression of the minimum particle radius for Bessel beams capture was deduct through the electromagnetism model, and transverse forces and potential depths were ...
In order to obtain the most suitable optical fields to trap the Rayleigh particles, the expression of the minimum particle radius for Bessel beams capture was deduct through the electromagnetism model, and transverse forces and potential depths were ...
Polarized bidirectional reflectance distribution function by subsurface defects of optical component
2009,
21.
Abstract:
Polarized bidirectional reflectance distribution function(PBRDF) of light scattered by subsurface defect(SSD) was derived on the foundation of Jones scattering matrix by use of right handed basis set. Four kinds of PBRDF changing with azimuth angle w...
Polarized bidirectional reflectance distribution function(PBRDF) of light scattered by subsurface defect(SSD) was derived on the foundation of Jones scattering matrix by use of right handed basis set. Four kinds of PBRDF changing with azimuth angle w...
2009,
21.
Abstract:
Based on the formula of range and that of real efficient secondary electron yield from metal, the relation among energy exponent, incident energy and the real efficient secondary electron yield at high incident electron energy was derived. Based on t...
Based on the formula of range and that of real efficient secondary electron yield from metal, the relation among energy exponent, incident energy and the real efficient secondary electron yield at high incident electron energy was derived. Based on t...
2009,
21.
Abstract:
The water switches in induction voltage adder are designed. The electrode of output switch is plate to annular and the electrode of peaking switch is annular. Selfbreak characters of water switches under 300 ns pulsed voltage are studied. The spacin...
The water switches in induction voltage adder are designed. The electrode of output switch is plate to annular and the electrode of peaking switch is annular. Selfbreak characters of water switches under 300 ns pulsed voltage are studied. The spacin...
2009,
21.
Abstract:
A low jitter 6 MV/300 kJ Marx generator has been developed for the primary test stand(PTS) which will be built for Z-pinch studies at Institute of Fluid Physics, CAEP. The generator is designed as a leading triggering circuit based on the S-type stru...
A low jitter 6 MV/300 kJ Marx generator has been developed for the primary test stand(PTS) which will be built for Z-pinch studies at Institute of Fluid Physics, CAEP. The generator is designed as a leading triggering circuit based on the S-type stru...
2009,
21.
Abstract:
A 10-stage wave erection Marx generator was modified from resistively isolated configuration to inductively isolated configuration for the investigation on its repetitive operation characteristics. Through a single shot experiment powered by a consta...
A 10-stage wave erection Marx generator was modified from resistively isolated configuration to inductively isolated configuration for the investigation on its repetitive operation characteristics. Through a single shot experiment powered by a consta...
