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RSS2007 Vol. 19, No. 02
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2007,
19.
Abstract:
The method to estimate the detectable stellar magnitude limit in daytime sky background is introduced. Based on the results of the contrast of star to sky background in daytime, the detectable stellar magnitude limits are computed and analyzed as fun...
The method to estimate the detectable stellar magnitude limit in daytime sky background is introduced. Based on the results of the contrast of star to sky background in daytime, the detectable stellar magnitude limits are computed and analyzed as fun...
2007,
19.
Abstract:
Supercontinuum generation incorporates many nonlinear effects. In our experiment, two supercontinuum pulses generated independently by ultrashort pulses form stable spatial interference fringes and a frequency comb appears with collinear time-delay p...
Supercontinuum generation incorporates many nonlinear effects. In our experiment, two supercontinuum pulses generated independently by ultrashort pulses form stable spatial interference fringes and a frequency comb appears with collinear time-delay p...
2007,
19.
Abstract:
It is important to evaluate sky radiance for a ground-to-air measurement system. Based on energy conservation law and the assumption that the underlying surface is a Lambert’s surface, a model was developed to calculate the additional sky radiance du...
It is important to evaluate sky radiance for a ground-to-air measurement system. Based on energy conservation law and the assumption that the underlying surface is a Lambert’s surface, a model was developed to calculate the additional sky radiance du...
2007,
19.
Abstract:
A 24 h experimental measurement for angle-of-arrival fluctuations on a 3.2 km line-of-sight link in Harbin was carried out over a three-month period in 2006. In the experiment, the measurement over a 10 s period at a high sampling rate of 1 kHz was c...
A 24 h experimental measurement for angle-of-arrival fluctuations on a 3.2 km line-of-sight link in Harbin was carried out over a three-month period in 2006. In the experiment, the measurement over a 10 s period at a high sampling rate of 1 kHz was c...
2007,
19.
Abstract:
By using the second-order moment method of the power density and a new model of flat-topped beams, the waist width，far-field divergence angle and beam quality factor of nonparaxial truncated flat-topped beams are derived analytically. It is shown tha...
By using the second-order moment method of the power density and a new model of flat-topped beams, the waist width，far-field divergence angle and beam quality factor of nonparaxial truncated flat-topped beams are derived analytically. It is shown tha...
2007,
19.
Abstract:
The propagation of a focused Gaussian beam through turbulent atmosphere is simulated by using non-adaptive coordinate transformation. The first-order weak-fluctuation Rytov theory predicts that the on-axis scintillation index would become significant...
The propagation of a focused Gaussian beam through turbulent atmosphere is simulated by using non-adaptive coordinate transformation. The first-order weak-fluctuation Rytov theory predicts that the on-axis scintillation index would become significant...
2007,
19.
Abstract:
The pump LD intensity distribution model under the Gaussian intensity approximate condition was revised, and the numerical model of the temperature field was established in the crystal cylinder of diode side-pumping solid state laser. The temperature...
The pump LD intensity distribution model under the Gaussian intensity approximate condition was revised, and the numerical model of the temperature field was established in the crystal cylinder of diode side-pumping solid state laser. The temperature...
2007,
19.
Abstract:
A direct detection Doppler wind lidar with the dual Fabry-Perot technique has been built and the system is described. The dual etalon with high-spectral resolution is used to discriminate the Doppler shift by the aerosol backscattering. Analysis show...
A direct detection Doppler wind lidar with the dual Fabry-Perot technique has been built and the system is described. The dual etalon with high-spectral resolution is used to discriminate the Doppler shift by the aerosol backscattering. Analysis show...
2007,
19.
Abstract:
A new method is proposed for the measurement of refractive index of aerosol by using a visibility meter(VM), an optical particle counter(OPC) and a micro pulse lidar(MPL). The extinction coefficient and ratio of extinction-to-backscatter are measured...
A new method is proposed for the measurement of refractive index of aerosol by using a visibility meter(VM), an optical particle counter(OPC) and a micro pulse lidar(MPL). The extinction coefficient and ratio of extinction-to-backscatter are measured...
2007,
19.
Abstract:
The two-phase model(TPM) is proved to be available in calculation of jet singlet oxygen generator(JSOG). The result of numerical simulation illustrates that the type of the generator kinetics is dependant on the relative concentration between chlorin...
The two-phase model(TPM) is proved to be available in calculation of jet singlet oxygen generator(JSOG). The result of numerical simulation illustrates that the type of the generator kinetics is dependant on the relative concentration between chlorin...
2007,
19.
Abstract:
The modal analysis method studying the elastic support rotating mirror for ultra-high speed photography was presented. With the finite element technology，the first and second modes of the three-faced aluminum alloy mirror were simulated under the sti...
The modal analysis method studying the elastic support rotating mirror for ultra-high speed photography was presented. With the finite element technology，the first and second modes of the three-faced aluminum alloy mirror were simulated under the sti...
2007,
19.
Abstract:
Using polar coordinates to optimize the fractal model, a novel segmentation algorithm is proposed to deal with extended target under complex environment. First, analyses is introduced for characteristics of morphology operator with variable algebra s...
Using polar coordinates to optimize the fractal model, a novel segmentation algorithm is proposed to deal with extended target under complex environment. First, analyses is introduced for characteristics of morphology operator with variable algebra s...
2007,
19.
Abstract:
The DNB (diagnostic neutral beam) device is a physical diagnostic system. The timing control subsystem plays a critical role in running DNB device. In order to produce diagnostic neutral beam accordantly with desire, timing control must provide a ser...
The DNB (diagnostic neutral beam) device is a physical diagnostic system. The timing control subsystem plays a critical role in running DNB device. In order to produce diagnostic neutral beam accordantly with desire, timing control must provide a ser...
2007,
19.
Abstract:
In order to study the mechanism of laser interacting with materials in laser propulsion technique, the parameters related to plasma state and mechanics are needed. The plasma spectra and temperature are measured by laser-induced plasma spectroscopy, ...
In order to study the mechanism of laser interacting with materials in laser propulsion technique, the parameters related to plasma state and mechanics are needed. The plasma spectra and temperature are measured by laser-induced plasma spectroscopy, ...
2007,
19.
Abstract:
In order to further understand the Z-pinch physical process and to optimize the experimental design, it is necessary to develop time-space-resolved diagnostic technique and corresponding equipments for investigation of imploding plasma and radiation ...
In order to further understand the Z-pinch physical process and to optimize the experimental design, it is necessary to develop time-space-resolved diagnostic technique and corresponding equipments for investigation of imploding plasma and radiation ...
2007,
19.
Abstract:
Laser driven shock wave stability of propagation in impedance match target was studied using one dimension characteristic line method. In addition, one dimension three temperature laser-target coupling JB program was used to simulate it. It was compa...
Laser driven shock wave stability of propagation in impedance match target was studied using one dimension characteristic line method. In addition, one dimension three temperature laser-target coupling JB program was used to simulate it. It was compa...
2007,
19.
Abstract:
For exploring the transport characteristic of hot electron bunches, the integrated image pattern of optical transition radiation were measured at the normal direction of the rear side of targets employing the optical CCD camera. The experiment was ca...
For exploring the transport characteristic of hot electron bunches, the integrated image pattern of optical transition radiation were measured at the normal direction of the rear side of targets employing the optical CCD camera. The experiment was ca...
2007,
19.
Abstract:
The substrate effects on the measurement of weak absorption of optical thin films at low frequency are analysed in theory. The absorptions of different thin films, including single-layer HfO2 and ZnO thin films with different thickness, on two substr...
The substrate effects on the measurement of weak absorption of optical thin films at low frequency are analysed in theory. The absorptions of different thin films, including single-layer HfO2 and ZnO thin films with different thickness, on two substr...
2007,
19.
Abstract:
Polyurethane-modified TDE-85/MeTHPA epoxy resin was prepared with polyurethane prepolymer (PUP). The effects of the molecular weight of polypropylene glycol (PPG), the content of PUP, and other factors on the resin′s mechanical properties were discus...
Polyurethane-modified TDE-85/MeTHPA epoxy resin was prepared with polyurethane prepolymer (PUP). The effects of the molecular weight of polypropylene glycol (PPG), the content of PUP, and other factors on the resin′s mechanical properties were discus...
2007,
19.
Abstract:
The radiative heat wave in matter is an important issue concerned by inertial confinement fusion(ICF) and astrophysics. However, accurate analytic diffusion wave solutions are difficult to obtain due to the strong nonlinearity of the radiation diffus...
The radiative heat wave in matter is an important issue concerned by inertial confinement fusion(ICF) and astrophysics. However, accurate analytic diffusion wave solutions are difficult to obtain due to the strong nonlinearity of the radiation diffus...
2007,
19.
Abstract:
CCD; 探测效率; X射线测量; 激光等离子体
CCD; 探测效率; X射线测量; 激光等离子体
2007,
19.
Abstract:
Base on the Foulds′ theory about the propagation of an electromagnetic wave through a helical waveguide, the effect of the higher-order modes in the groove is taken into account. The dispersion diagram obtained from calculation agrees very well with ...
Base on the Foulds′ theory about the propagation of an electromagnetic wave through a helical waveguide, the effect of the higher-order modes in the groove is taken into account. The dispersion diagram obtained from calculation agrees very well with ...
2007,
19.
Abstract:
This paper proposes new a laser-controlled superconducting microwave variable attenuator which can be used in high- temperature superconducting (HTS) subsystem of satellites. The design process and experimental results are analyzed. Low microwave sur...
This paper proposes new a laser-controlled superconducting microwave variable attenuator which can be used in high- temperature superconducting (HTS) subsystem of satellites. The design process and experimental results are analyzed. Low microwave sur...
2007,
19.
Abstract:
Using a 2.5 dimensional fully electromagnetic particle-in-cell (PIC) code, a new type of MILO was designed. A circle is placed at the launch point to improve the interaction between the electron beam and the fields supported by the slow wave structur...
Using a 2.5 dimensional fully electromagnetic particle-in-cell (PIC) code, a new type of MILO was designed. A circle is placed at the launch point to improve the interaction between the electron beam and the fields supported by the slow wave structur...
2007,
19.
Abstract:
The increase of integral emittance caused by Corkscrew motion in LIA is theoretically analyzed and numerically calculated in the paper. The simulation shows that the Corkscrew of beam centroid is a low frequency motion which overleaps the average ecc...
The increase of integral emittance caused by Corkscrew motion in LIA is theoretically analyzed and numerically calculated in the paper. The simulation shows that the Corkscrew of beam centroid is a low frequency motion which overleaps the average ecc...
2007,
19.
Abstract:
In order to investigate the spectrum effect in density gaining, an ideal radiography has been simualted with Monte Carlo (MC) method. Three kinds of mass attenuation coefficient(MAC) have been used, which are the monoenergetic MAC at the mean energy ...
In order to investigate the spectrum effect in density gaining, an ideal radiography has been simualted with Monte Carlo (MC) method. Three kinds of mass attenuation coefficient(MAC) have been used, which are the monoenergetic MAC at the mean energy ...
2007,
19.
Abstract:
Nanocrystalline material was chosen in the transformer design of the klystron modulator. The voltagecurrent vectors method was employed to measure the sample magnetic material, and the hysteresis curve, permeability and magnetic loss were obtained a...
Nanocrystalline material was chosen in the transformer design of the klystron modulator. The voltagecurrent vectors method was employed to measure the sample magnetic material, and the hysteresis curve, permeability and magnetic loss were obtained a...
2007,
19.
Abstract:
Based on the experiment on the Shenguang-Ⅱ，the damage of the phosphor and the micro-channel plate of the X-ray framing camera, induced by the vacuum-arc discharge, has been investigated. By measuring the position of the arc on the phosphor and the am...
Based on the experiment on the Shenguang-Ⅱ，the damage of the phosphor and the micro-channel plate of the X-ray framing camera, induced by the vacuum-arc discharge, has been investigated. By measuring the position of the arc on the phosphor and the am...
2007,
19.
Abstract:
MWIR HgCdTe photoconductive detectors were irradiated with 1Mrad gamma dose, the devices were annealed at different temperature from 313 K to 333 K for different baking time. The body resistance，responsivity，response spectrum and detectivity of the d...
MWIR HgCdTe photoconductive detectors were irradiated with 1Mrad gamma dose, the devices were annealed at different temperature from 313 K to 333 K for different baking time. The body resistance，responsivity，response spectrum and detectivity of the d...
2007,
19.
Abstract:
An optical spectroscopy based on Doppler shift is applied to measuring energy and the percentages of the four energy component—the full energy, half energy, third energy and the eighteenth energy of diagnostic neutral beam(DNB) on HT-7 Tokamak. Accor...
An optical spectroscopy based on Doppler shift is applied to measuring energy and the percentages of the four energy component—the full energy, half energy, third energy and the eighteenth energy of diagnostic neutral beam(DNB) on HT-7 Tokamak. Accor...
2007,
19.
Abstract:
The 96GeO-(3-χ)Al2O3-χNa2O-1NaBiO3 (molar fraction χ is 0,0.5,1.5, designated as A1, A2 and A3, respectively) and 96GeO-(3.5-ψ)Al2O3-ψNa2O-0.5Bi2O3(molar fraction ψ is 0.5,1,2, designated as B1, B2 and B3, respectively) glasses were prepared by conve...
The 96GeO-(3-χ)Al2O3-χNa2O-1NaBiO3 (molar fraction χ is 0,0.5,1.5, designated as A1, A2 and A3, respectively) and 96GeO-(3.5-ψ)Al2O3-ψNa2O-0.5Bi2O3(molar fraction ψ is 0.5,1,2, designated as B1, B2 and B3, respectively) glasses were prepared by conve...
2007,
19.
Abstract:
In order to realize less than 30 μm the pointing error of the main laser and the large focal spot irradiation uniform on target surface better than 10％ of the additional beam in “Shenguang-Ⅱ” laser facility, a physical design of final optics assembly...
In order to realize less than 30 μm the pointing error of the main laser and the large focal spot irradiation uniform on target surface better than 10％ of the additional beam in “Shenguang-Ⅱ” laser facility, a physical design of final optics assembly...
2007,
19.
Abstract:
X-ray is produced by SJ-A X-ray tube in China Academy of Measurement and Test Technology, Chengdu,and 80C196KC20 microprocessor is irradiated by X-ray in different directions. The direction is defined along the line which is perpenticular to the surf...
X-ray is produced by SJ-A X-ray tube in China Academy of Measurement and Test Technology, Chengdu,and 80C196KC20 microprocessor is irradiated by X-ray in different directions. The direction is defined along the line which is perpenticular to the surf...
2007,
19.
Abstract:
Silicon Carbide (SiC) is well known as an important optical material in aerospace optical system and high power laser optics. But the optical fabrication of SiC limits its usage widely. In this paper, domestic Chemical Gas Deposition (CVD) SiC materi...
Silicon Carbide (SiC) is well known as an important optical material in aerospace optical system and high power laser optics. But the optical fabrication of SiC limits its usage widely. In this paper, domestic Chemical Gas Deposition (CVD) SiC materi...
2007,
19.
Abstract:
Solid state pulse switch modules are developed for high power modulator. Internal semiconductor physical process and equivalent circuit of insulated gate bipolar transistor(IGBT) are analyzed. Based on power electronics simulation software Saber and ...
Solid state pulse switch modules are developed for high power modulator. Internal semiconductor physical process and equivalent circuit of insulated gate bipolar transistor(IGBT) are analyzed. Based on power electronics simulation software Saber and ...
2007,
19.
Abstract:
The response of photomultiplier tube(PMT) to scattered neutron and gamma ray is a severe interfere factor in low sensitivity scintillation neutron detection system. The response waveforms of PMT to 14.1 MeV pulse neutron is measured upon the ING-103 ...
The response of photomultiplier tube(PMT) to scattered neutron and gamma ray is a severe interfere factor in low sensitivity scintillation neutron detection system. The response waveforms of PMT to 14.1 MeV pulse neutron is measured upon the ING-103 ...
2007,
19.
Abstract:
In this paper a rail-like switch with multi-channel connected with parallel electrodes is designed and manufactured. The structure of the switch is illustrated and the internal electric field distribution is simulated by an electromagnetic simulation...
In this paper a rail-like switch with multi-channel connected with parallel electrodes is designed and manufactured. The structure of the switch is illustrated and the internal electric field distribution is simulated by an electromagnetic simulation...
2007,
19.
Abstract:
The turn-skipping of helical magnetic flux compression generators was analyzed, considering such factors as armature/stator eccentricity, non-uniform of armature surface and thickness, and detonation end effect, etc. Utilizing a more precise calculat...
The turn-skipping of helical magnetic flux compression generators was analyzed, considering such factors as armature/stator eccentricity, non-uniform of armature surface and thickness, and detonation end effect, etc. Utilizing a more precise calculat...
2007,
19.
Abstract:
This paper summarized the geometry and principle of the rod-pinch diode. Using Laminar model and considering the effect of background ion space charge on the one dimensional, Laminar equilibria of relativistic, magnetically self-insulated, electron f...
This paper summarized the geometry and principle of the rod-pinch diode. Using Laminar model and considering the effect of background ion space charge on the one dimensional, Laminar equilibria of relativistic, magnetically self-insulated, electron f...
