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RSS2008 Vol. 20, No. 04
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2008,
20.
Abstract:
A precise simulation the focus anisoplanatism error of Yunnan observatory 1.2 m 61-element laser guide star adaptive optics system, which caused by laser beacon at a finite range travels a different path than does the light from natural star at a inf...
A precise simulation the focus anisoplanatism error of Yunnan observatory 1.2 m 61-element laser guide star adaptive optics system, which caused by laser beacon at a finite range travels a different path than does the light from natural star at a inf...
2008,
20.
Abstract:
Polarimetric parameters and polarization imaging of camouflage net were measured to study the effect of polarization remote sensing on the camoulflage targets.It is found that the polarization degree of camouflage net was greatly influenced by the co...
Polarimetric parameters and polarization imaging of camouflage net were measured to study the effect of polarization remote sensing on the camoulflage targets.It is found that the polarization degree of camouflage net was greatly influenced by the co...
2008,
20.
Abstract:
In this paper, based on the iterative method of finite-difference, 3-D instantaneoos and stable temperature distribution of square slice in the Nd:YAG disk laser under super-Gaussian pump light are calculated. Using the thermal balance differential e...
In this paper, based on the iterative method of finite-difference, 3-D instantaneoos and stable temperature distribution of square slice in the Nd:YAG disk laser under super-Gaussian pump light are calculated. Using the thermal balance differential e...
2008,
20.
Abstract:
Linear chirped pulse amplification at single pass free-electron laser（FEL） amplifier has been performed by means of the modified 1D time-dependent FEL code，and the averaged output power of pulses as functions of undulator length at different chirped ...
Linear chirped pulse amplification at single pass free-electron laser（FEL） amplifier has been performed by means of the modified 1D time-dependent FEL code，and the averaged output power of pulses as functions of undulator length at different chirped ...
2008,
20.
Abstract:
Aerial target under day-time condition shows complex imaging characteristics, like misshapen and blur edges, even flickering and inconsecutive imaging, which become a bottleneck of detecting and tracking targets in tracking system. Point spread funct...
Aerial target under day-time condition shows complex imaging characteristics, like misshapen and blur edges, even flickering and inconsecutive imaging, which become a bottleneck of detecting and tracking targets in tracking system. Point spread funct...
2008,
20.
Abstract:
A method of controlling chaotic behavior in erbium-doped fiber dual-ring laser is proposed by using couplers to feed the laser outputs back into the system and control the decay rate of the system indirectly. The chaotic fiber laser is controlled by ...
A method of controlling chaotic behavior in erbium-doped fiber dual-ring laser is proposed by using couplers to feed the laser outputs back into the system and control the decay rate of the system indirectly. The chaotic fiber laser is controlled by ...
2008,
20.
Abstract:
In this paper, the ablation mechanisms of carbon fiber reinforced E-51 epoxy composite irradiated by repetition frequency laser whose wavelength was 1 064 nm were studied, and the effects of maximum power density, irradiation time, frequency and puls...
In this paper, the ablation mechanisms of carbon fiber reinforced E-51 epoxy composite irradiated by repetition frequency laser whose wavelength was 1 064 nm were studied, and the effects of maximum power density, irradiation time, frequency and puls...
2008,
20.
Abstract:
To study the starting characteristic of directly drained CW DF/HF chemical lasers(DDCL), a single-nozzle small-scale model of DDCL gas channel was set up, and a series of experiments were conducted with different working mediums and several diffusers...
To study the starting characteristic of directly drained CW DF/HF chemical lasers(DDCL), a single-nozzle small-scale model of DDCL gas channel was set up, and a series of experiments were conducted with different working mediums and several diffusers...
2008,
20.
Abstract:
Continuous triangle waveform as the magnetic field current of scanning magnet can give good uniformity degree of radiation in industrial radiation accelerator. This paper introduced the design of a scanning magnet power-supply used in a 10 MeV indust...
Continuous triangle waveform as the magnetic field current of scanning magnet can give good uniformity degree of radiation in industrial radiation accelerator. This paper introduced the design of a scanning magnet power-supply used in a 10 MeV indust...
2008,
20.
Abstract:
Based on the experimental device of the water spiral pulse forming line(PFL) type electron beam accelerator, the effect of inductance between the middle and outer cylinders of PFL on diode voltage is theoretically and experimentally studied in this p...
Based on the experimental device of the water spiral pulse forming line(PFL) type electron beam accelerator, the effect of inductance between the middle and outer cylinders of PFL on diode voltage is theoretically and experimentally studied in this p...
2008,
20.
Abstract:
The C band MILO is simulated by the 3-D PIC code KARAT program in order to study the reason of frequent higher order modes in experiment and their influence on the performance of MILO. Higher order modes are caused by wave-beam action under condition...
The C band MILO is simulated by the 3-D PIC code KARAT program in order to study the reason of frequent higher order modes in experiment and their influence on the performance of MILO. Higher order modes are caused by wave-beam action under condition...
2008,
20.
Abstract:
A 324 MHz drift-tube linac(DTL) is designed for proton cancer therapy. The design demands low power dissipation and short tank. The DTL accelerates beam from 2.5 MeV to 7 MeV, with RF power of 265 kW and total length of 1.9 m. The DTL uses permanent-...
A 324 MHz drift-tube linac(DTL) is designed for proton cancer therapy. The design demands low power dissipation and short tank. The DTL accelerates beam from 2.5 MeV to 7 MeV, with RF power of 265 kW and total length of 1.9 m. The DTL uses permanent-...
2008,
20.
Abstract:
A femto-second electron bunch facility has been constructed and commissioned at the Shanghai Institute of Applied Physics(SINAP). The linac of this facility consists of an S-band thermionic cathode RF-gun, an alpha magnet and a SLAC-type accelerating...
A femto-second electron bunch facility has been constructed and commissioned at the Shanghai Institute of Applied Physics(SINAP). The linac of this facility consists of an S-band thermionic cathode RF-gun, an alpha magnet and a SLAC-type accelerating...
2008,
20.
Abstract:
hiver was used for getting and storaging data from IOCs of accelerator control system. Software, client and web human-machine interfaces were developed for computer users to retrieval data online or off-line intelligently. This system is convenient ...
hiver was used for getting and storaging data from IOCs of accelerator control system. Software, client and web human-machine interfaces were developed for computer users to retrieval data online or off-line intelligently. This system is convenient ...
2008,
20.
Abstract:
This paper describes the characters of a control system EPICS, which is popular in large accelerator laboratories in the world. It is a software toolkit for building process control system for a wide variety of experimental and industrial application...
This paper describes the characters of a control system EPICS, which is popular in large accelerator laboratories in the world. It is a software toolkit for building process control system for a wide variety of experimental and industrial application...
2008,
20.
Abstract:
The dimensions of the electron gun are obtained by means of comparing algorithm to match objective perveance with the data in the database. Objective dimensions is acquired by the reduced scale method. An objective function is introduced, which takes...
The dimensions of the electron gun are obtained by means of comparing algorithm to match objective perveance with the data in the database. Objective dimensions is acquired by the reduced scale method. An objective function is introduced, which takes...
Diagnosis of hydrogen plasmas at low temperature and low pressure by spectroscopy and Langmuir probe
2008,
20.
Abstract:
The emission spectroscopy and I-V characteristics of hydrogen plasmas excited in helicon-wave plasma chemical vapor deposition(HWP-CVD) device have been measured by emission spectroscopy method and Langmuir probe. The density of the excited hydrogen ...
The emission spectroscopy and I-V characteristics of hydrogen plasmas excited in helicon-wave plasma chemical vapor deposition(HWP-CVD) device have been measured by emission spectroscopy method and Langmuir probe. The density of the excited hydrogen ...
2008,
20.
Abstract:
Development of quantum-dot-array diffraction grating (QDADG)with single order diffraction properties is important for laser fusion research. The diffraction principle and fabrication method are introduced in this article. Diffraction properties of qu...
Development of quantum-dot-array diffraction grating (QDADG)with single order diffraction properties is important for laser fusion research. The diffraction principle and fabrication method are introduced in this article. Diffraction properties of qu...
2008,
20.
Abstract:
To satisfy the special requirement of the X-ray diagnosis instrument which needs long working distance and wide spectrum measurement in ICF, a new two-channel curved crystal spectrometer has been designed according to the reflecting geometry of conve...
To satisfy the special requirement of the X-ray diagnosis instrument which needs long working distance and wide spectrum measurement in ICF, a new two-channel curved crystal spectrometer has been designed according to the reflecting geometry of conve...
2008,
20.
Abstract:
In order to optimize the soft X-ray lens design, obtain high power density soft X-ray without other particles by combining it with plasma radiant point, experiments of measuring transmission efficiency with the power density range of 6×106～1.5×107 W/...
In order to optimize the soft X-ray lens design, obtain high power density soft X-ray without other particles by combining it with plasma radiant point, experiments of measuring transmission efficiency with the power density range of 6×106～1.5×107 W/...
2008,
20.
Abstract:
Fe-doped hydrogenated amorphous carbon (a-C:H:Fe) films were deposited from T2B/ferrocene/H2 gas mixtures by plasma enhanced metal organic chemical vapor deposition(PEMOCVD). X-ray photoelectron spectroscopy(XPS) was used to probe the composition of ...
Fe-doped hydrogenated amorphous carbon (a-C:H:Fe) films were deposited from T2B/ferrocene/H2 gas mixtures by plasma enhanced metal organic chemical vapor deposition(PEMOCVD). X-ray photoelectron spectroscopy(XPS) was used to probe the composition of ...
2008,
20.
Abstract:
A side-on shadowgraph system was developed to dectect the velocity of the target in the equation of state experiments, using the visible laser as detection beam. The equation of state experiments were carried out on the high power excimer laser syste...
A side-on shadowgraph system was developed to dectect the velocity of the target in the equation of state experiments, using the visible laser as detection beam. The equation of state experiments were carried out on the high power excimer laser syste...
2008,
20.
Abstract:
In FDTD calculation of layered media, it is difficulty to set the slant incident plane wave in arbitrary layered background media. To solve this problem, 1D Maxwell's equations including oblique incident angle are derived based on 2D equations for TM...
In FDTD calculation of layered media, it is difficulty to set the slant incident plane wave in arbitrary layered background media. To solve this problem, 1D Maxwell's equations including oblique incident angle are derived based on 2D equations for TM...
2008,
20.
Abstract:
A aperture-coupling directional coupler between rectangular waveguide and circular waveguide through small aperture was designed to measure the output power of high power microwave devices. The formulas of single-hole coupling degree were made out wi...
A aperture-coupling directional coupler between rectangular waveguide and circular waveguide through small aperture was designed to measure the output power of high power microwave devices. The formulas of single-hole coupling degree were made out wi...
2008,
20.
Abstract:
Stripline beam position monitors(BPM) can be used as a nonintercepting emittance monitor and it is independent of the beam distribution. Usually, difference over sum method is used to pick up the quadrupole component. This paper puts forward two new ...
Stripline beam position monitors(BPM) can be used as a nonintercepting emittance monitor and it is independent of the beam distribution. Usually, difference over sum method is used to pick up the quadrupole component. This paper puts forward two new ...
2008,
20.
Abstract:
According to the relationship between the parameters of PIN diode and temperature,power response characteristics of PIN diode limiter at different temperatures are simulated with a limiter circuit model which is based on the base area ambipolar carri...
According to the relationship between the parameters of PIN diode and temperature,power response characteristics of PIN diode limiter at different temperatures are simulated with a limiter circuit model which is based on the base area ambipolar carri...
2008,
20.
Abstract:
Based on the widely used monopole on conducting plane,the response characters of antenna exposed to high electromagnetic pulse,high power microwave and ultra wideband electromagnetic pulse were analysed by moment method,and the time domain and freque...
Based on the widely used monopole on conducting plane,the response characters of antenna exposed to high electromagnetic pulse,high power microwave and ultra wideband electromagnetic pulse were analysed by moment method,and the time domain and freque...
2008,
20.
Abstract:
Irradiation effects of proton and gamma-ray on a CVD diamond detector were studied on Beijing Tandem accelerator and 60Co source. The decrease of the detector’s signal current was less than 3.5% after irradiated by 1013 cm-2,9 MeV continuous protons....
Irradiation effects of proton and gamma-ray on a CVD diamond detector were studied on Beijing Tandem accelerator and 60Co source. The decrease of the detector’s signal current was less than 3.5% after irradiated by 1013 cm-2,9 MeV continuous protons....
2008,
20.
Abstract:
ZnO thin films on various substrates were prepared by in situ oxidation of RF sputtered Zn3N2 films. The structural and photoluminscent properties of ZnO films were measured by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photolumi...
ZnO thin films on various substrates were prepared by in situ oxidation of RF sputtered Zn3N2 films. The structural and photoluminscent properties of ZnO films were measured by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photolumi...
2008,
20.
Abstract:
By solving Laplace’s equation with the first class boundary condition, the analytical expression of the axial potential distribution in a typical triode immersion objective was achieved. Based on the related expression, effect of the geometrical para...
By solving Laplace’s equation with the first class boundary condition, the analytical expression of the axial potential distribution in a typical triode immersion objective was achieved. Based on the related expression, effect of the geometrical para...
2008,
20.
Abstract:
To apply industrial computed tomography (CT) technology to reverse engineering effectively, an industrial CT slicing image preprocessing system is developed. The system involves three parts, which deal with image process, contour fitting and data fo...
To apply industrial computed tomography (CT) technology to reverse engineering effectively, an industrial CT slicing image preprocessing system is developed. The system involves three parts, which deal with image process, contour fitting and data fo...
2008,
20.
Abstract:
The weak damage induced by 0.28 MeV Zn+ ion implantation was studied in AlAs/GaAs and GaAs/Ga0.92In0.08. As superlattice samples using Raman spectroscopy. The variation of the average strain in the implanted layers with the implantation dose was eval...
The weak damage induced by 0.28 MeV Zn+ ion implantation was studied in AlAs/GaAs and GaAs/Ga0.92In0.08. As superlattice samples using Raman spectroscopy. The variation of the average strain in the implanted layers with the implantation dose was eval...
2008,
20.
Abstract:
The channeling effect and radiation of charged particles in the superlattice quantum well are predicted. The motion behaviors of a charged particle in the superlattice quantum well are described by using sine-squared potential. In the frame of the cl...
The channeling effect and radiation of charged particles in the superlattice quantum well are predicted. The motion behaviors of a charged particle in the superlattice quantum well are described by using sine-squared potential. In the frame of the cl...
2008,
20.
Abstract:
The location and the shape of emitting surface in plasma ion source determine the extraction character of ion beam, and they always depend on the parameters of plasma, the configuration of electrodes and the extraction voltage, etc. They always autom...
The location and the shape of emitting surface in plasma ion source determine the extraction character of ion beam, and they always depend on the parameters of plasma, the configuration of electrodes and the extraction voltage, etc. They always autom...
2008,
20.
Abstract:
In order to obtain good etching effect, parameters as working pressure and ratio of gas flux for etching processes with and without Al mask were studied. The results are as follows: under the same conditions, etching rate varies little; whether or no...
In order to obtain good etching effect, parameters as working pressure and ratio of gas flux for etching processes with and without Al mask were studied. The results are as follows: under the same conditions, etching rate varies little; whether or no...
2008,
20.
Abstract:
The medium-type fast-neutron detector responds to direct neutron irradiation and it has an extreme effect on its design and practical applications. Monte-Carlo simulation programs based on Geant4 toolkit are developed to study the neutron direct radi...
The medium-type fast-neutron detector responds to direct neutron irradiation and it has an extreme effect on its design and practical applications. Monte-Carlo simulation programs based on Geant4 toolkit are developed to study the neutron direct radi...
2008,
20.
Abstract:
A symmetrical pulsed high magnetic field generator is equipped to generate high magnetic field of 18 T, and its field period is about 10 μs. The energy storage of the equipment depends on the pulsed capacitor. Its transmission system consists of a fl...
A symmetrical pulsed high magnetic field generator is equipped to generate high magnetic field of 18 T, and its field period is about 10 μs. The energy storage of the equipment depends on the pulsed capacitor. Its transmission system consists of a fl...
2008,
20.
Abstract:
A high voltage and high repetition rate sub-nanosecond gas switch is designed. Rise-time and fall-time of a sharpened pulse can be varied by turning two group of rotary knobs outside the cavity to adjust the peaking and chopping spaces. Results of ex...
A high voltage and high repetition rate sub-nanosecond gas switch is designed. Rise-time and fall-time of a sharpened pulse can be varied by turning two group of rotary knobs outside the cavity to adjust the peaking and chopping spaces. Results of ex...
2008,
20.
Abstract:
Based on a combination of pulse transformer and distributed electrical parameter pulse forming line(PFL), a high power pulse generating and forming technology is introduced. The basic plan theory and method is briefly summarized, and an integrative g...
Based on a combination of pulse transformer and distributed electrical parameter pulse forming line(PFL), a high power pulse generating and forming technology is introduced. The basic plan theory and method is briefly summarized, and an integrative g...
