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RSS2005 Vol. 17, No. 03
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2005,
17.
Abstract:
Scattering of the atmosphere particles such as fogs is one of the important factors which limit the precision of laser control and guide. Based on Mie's theory,the scattering efficiency factor of a spherical particle is analyzed, the scattering coeff...
Scattering of the atmosphere particles such as fogs is one of the important factors which limit the precision of laser control and guide. Based on Mie's theory,the scattering efficiency factor of a spherical particle is analyzed, the scattering coeff...
2005,
17.
Abstract:
Numerical simulation was used to quantitatively analyze the statistical properties of short-exposure images with strong turbulent effects. Moreover, we compared the numerical results with the experimental results. The analytic results show that the s...
Numerical simulation was used to quantitatively analyze the statistical properties of short-exposure images with strong turbulent effects. Moreover, we compared the numerical results with the experimental results. The analytic results show that the s...
2005,
17.
Abstract:
X-ray to light convertor in a real time radiography image formation system plays an important role. A new type Tb3＋ doped silicate luminescent glass has been developed recently. There is no visible light dispersion in the glass and it can take the pl...
X-ray to light convertor in a real time radiography image formation system plays an important role. A new type Tb3＋ doped silicate luminescent glass has been developed recently. There is no visible light dispersion in the glass and it can take the pl...
2005,
17.
Abstract:
The polarization diversity of laser scattering field is studied in this paper.According to the vector small perturbation solution of extinction theorem,the scattering field from rough surfaces is classified as the zero order or higher order solution....
The polarization diversity of laser scattering field is studied in this paper.According to the vector small perturbation solution of extinction theorem,the scattering field from rough surfaces is classified as the zero order or higher order solution....
2005,
17.
Abstract:
Starting from the Fresnel-Kirchhoff and Rayleigh-Sommerfeld diffraction integral formulas, respectively, and in consideration of the inclination factor, the general diffraction integral expressions for convergent spherical waves diffracted at a circu...
Starting from the Fresnel-Kirchhoff and Rayleigh-Sommerfeld diffraction integral formulas, respectively, and in consideration of the inclination factor, the general diffraction integral expressions for convergent spherical waves diffracted at a circu...
2005,
17.
Abstract:
The on-axis intensity distribution was investigated in the focal region of partially coherent light focused by an annular lens. The results show that, when the partially coherent light is focused by an annular lens, the best focusing point is not loc...
The on-axis intensity distribution was investigated in the focal region of partially coherent light focused by an annular lens. The results show that, when the partially coherent light is focused by an annular lens, the best focusing point is not loc...
2005,
17.
Abstract:
The focal switch effect of Bessel-Gaussian beams focused by a thin lens without aperture is studied in detail. The third-order algebraic equation determining the position of the axial maximum intensity and the formula of the relative transition heigh...
The focal switch effect of Bessel-Gaussian beams focused by a thin lens without aperture is studied in detail. The third-order algebraic equation determining the position of the axial maximum intensity and the formula of the relative transition heigh...
2005,
17.
Abstract:
The article analyses and simulates the variation of beam energy error,spot centroid error and spot distribution with the detector sensitivity dynamic range, sensitivity difference and space between detectors in laser spot measurement by uniform squar...
The article analyses and simulates the variation of beam energy error,spot centroid error and spot distribution with the detector sensitivity dynamic range, sensitivity difference and space between detectors in laser spot measurement by uniform squar...
2005,
17.
Abstract:
This paper presents the experimental method to measure the high reflectivity of optical mirror by cavity ring-down spectroscopy. The experimental system uses a straight cavity composed of a pair of cavity mirrors with same reflectivity or a folded ca...
This paper presents the experimental method to measure the high reflectivity of optical mirror by cavity ring-down spectroscopy. The experimental system uses a straight cavity composed of a pair of cavity mirrors with same reflectivity or a folded ca...
2005,
17.
Abstract:
Output characteristics were tested under two diluent injecting methods on a single tube discharge excited infrared multi-band chemical laser by taking DF as a typical case. Experiment results of laser power output, mode characteristics, and spectra d...
Output characteristics were tested under two diluent injecting methods on a single tube discharge excited infrared multi-band chemical laser by taking DF as a typical case. Experiment results of laser power output, mode characteristics, and spectra d...
2005,
17.
Abstract:
Laser propulsion technology is one of the advanced propulsion technologies that has been paid a great deal of attention to. Of all the laser propulsion technologies, laser thruster technology is an important technology, and it is also a vital one. Ba...
Laser propulsion technology is one of the advanced propulsion technologies that has been paid a great deal of attention to. Of all the laser propulsion technologies, laser thruster technology is an important technology, and it is also a vital one. Ba...
2005,
17.
Abstract:
When a low-orbit satellite moves under thermal condition, the normal line of the antenna mirror surface turns due to antenna mirror thermal distortion. The turn magnitude order is 100 μrad when the thermal tension is not released，so the beam transfer...
When a low-orbit satellite moves under thermal condition, the normal line of the antenna mirror surface turns due to antenna mirror thermal distortion. The turn magnitude order is 100 μrad when the thermal tension is not released，so the beam transfer...
2005,
17.
Abstract:
Fe/Al compound thin films were fabricated by pulse laser deposition(PLD) and its X-ray photon electron spectroscopy(XPS) examinations were conducted. The surface morphology and oxidation were analyzed with atomic force microscope(AFM) and scanning el...
Fe/Al compound thin films were fabricated by pulse laser deposition(PLD) and its X-ray photon electron spectroscopy(XPS) examinations were conducted. The surface morphology and oxidation were analyzed with atomic force microscope(AFM) and scanning el...
2005,
17.
Abstract:
A distorted wavefront model is set up, according to the practical distorted wavefront of the optical components. In the calculation of phase RMS gradient, three different ways to handle the distorted wavefront are introduced.They are handling directl...
A distorted wavefront model is set up, according to the practical distorted wavefront of the optical components. In the calculation of phase RMS gradient, three different ways to handle the distorted wavefront are introduced.They are handling directl...
2005,
17.
Abstract:
Based on the optics manufacture actualitys in our country, different parameters used to value the optics profile for high power laser drivers are expatiated with the concept of spatial wavelength region. At the same time, the importance of each param...
Based on the optics manufacture actualitys in our country, different parameters used to value the optics profile for high power laser drivers are expatiated with the concept of spatial wavelength region. At the same time, the importance of each param...
2005,
17.
Abstract:
The physical equations of direct-drive cylindrical hydrodynamic instability in the LARED-S code, the geometry for the direct-drive cylindrical targets, the slide grids and some related techniques in the simulation are given in the paper. In the simul...
The physical equations of direct-drive cylindrical hydrodynamic instability in the LARED-S code, the geometry for the direct-drive cylindrical targets, the slide grids and some related techniques in the simulation are given in the paper. In the simul...
2005,
17.
Abstract:
Study of stress in Mo/Si multilayers is carried out for application of extreme ultraviolet multilayer coatings in the diagnosis of high density plasmas and extreme ultraviolet lithography. Stress generating mechanisms is discussed. Precise measuremen...
Study of stress in Mo/Si multilayers is carried out for application of extreme ultraviolet multilayer coatings in the diagnosis of high density plasmas and extreme ultraviolet lithography. Stress generating mechanisms is discussed. Precise measuremen...
2005,
17.
Abstract:
The process of radiative ablation and neutron yields of DD-capsule with CH shell implosion driven by Plank spectrum and nonequilibrium spectrum radiation fields was numerically studied using 1-D RDMG code of multigroup-nonequilibrium radiation hydrod...
The process of radiative ablation and neutron yields of DD-capsule with CH shell implosion driven by Plank spectrum and nonequilibrium spectrum radiation fields was numerically studied using 1-D RDMG code of multigroup-nonequilibrium radiation hydrod...
2005,
17.
Abstract:
Gain characteristics of a large-aperture Ti:sapphire disk is studied in detail. To achieve large energy output, the pump energy fluence and beam size were analyzed and optimized. The results is that, for a Ti:sapphire crystal of 80 mm×17 mm, the opti...
Gain characteristics of a large-aperture Ti:sapphire disk is studied in detail. To achieve large energy output, the pump energy fluence and beam size were analyzed and optimized. The results is that, for a Ti:sapphire crystal of 80 mm×17 mm, the opti...
2005,
17.
Abstract:
The pre-pulse duration and contrast are very important in the ultra-high power CPA laser system. The effects of the self phase modulation (SPM) were simulated on the peak intensity, pre-pulse duration and contrast of the compressed pulse, when the ch...
The pre-pulse duration and contrast are very important in the ultra-high power CPA laser system. The effects of the self phase modulation (SPM) were simulated on the peak intensity, pre-pulse duration and contrast of the compressed pulse, when the ch...
2005,
17.
Abstract:
With ray tracing analysis method, a theoretical analysis of wavefront aberration is made in pulse compression gratings. A model made up of pulse compression grating pair with wavefront aberration is applied to calculate the effect of the wavefront ab...
With ray tracing analysis method, a theoretical analysis of wavefront aberration is made in pulse compression gratings. A model made up of pulse compression grating pair with wavefront aberration is applied to calculate the effect of the wavefront ab...
2005,
17.
Abstract:
The superconducting accelerator has high quality factor, so the decay time of the field emitted by beam is much longer than that in normal conducting cavity. This results in the strong interaction between the SC cavity and the beam through it. The hi...
The superconducting accelerator has high quality factor, so the decay time of the field emitted by beam is much longer than that in normal conducting cavity. This results in the strong interaction between the SC cavity and the beam through it. The hi...
2005,
17.
Abstract:
In this paper, fine-structure energy levels of configurations 4s24p3 and 4s4p4 for Arsenic isoelectronic sequence ions from KrIVto CdXVI are analysed by multi-configuration Hartree-Fock plus exchange-statistical-potential with relativistic correction...
In this paper, fine-structure energy levels of configurations 4s24p3 and 4s4p4 for Arsenic isoelectronic sequence ions from KrIVto CdXVI are analysed by multi-configuration Hartree-Fock plus exchange-statistical-potential with relativistic correction...
2005,
17.
Abstract:
A generalized equation, which governs the dependence of space charge current flow on conducting current in three relativistic configurations, is deduced from Poisson's equation with assumption of space-charge-limited flow and electrons' canonical mom...
A generalized equation, which governs the dependence of space charge current flow on conducting current in three relativistic configurations, is deduced from Poisson's equation with assumption of space-charge-limited flow and electrons' canonical mom...
2005,
17.
Abstract:
A method adopting the charge analog digital conversion technique to calibrate a current scintillation detector is described. Each pulse charge produced by a single particle is collected and recorded. Calculating the mean current, the sensitivity of t...
A method adopting the charge analog digital conversion technique to calibrate a current scintillation detector is described. Each pulse charge produced by a single particle is collected and recorded. Calculating the mean current, the sensitivity of t...
2005,
17.
Abstract:
A compact helical explosively-driven magnetic flux compression generator (MFCG) using rechargeable battery as initial energy source has two stages, one acts as an energy amplifier, the other serves as a pulse sharper to match high inductance load. Th...
A compact helical explosively-driven magnetic flux compression generator (MFCG) using rechargeable battery as initial energy source has two stages, one acts as an energy amplifier, the other serves as a pulse sharper to match high inductance load. Th...
2005,
17.
Abstract:
The measurement uncertainty is often evaluated by a probabilistic approach, but such evaluation is not always adapted to imprecise measurement data. This paper focuses on the use of the evidence theory to evaluate the measurement uncertainty of impre...
The measurement uncertainty is often evaluated by a probabilistic approach, but such evaluation is not always adapted to imprecise measurement data. This paper focuses on the use of the evidence theory to evaluate the measurement uncertainty of impre...
2005,
17.
Abstract:
The selection of medium material and the parameter design has the key influence on the loss of pulse transmission line. According to distributed parameter theory and electromagnetic microwave theory, the computing formulas of loss of epoxy-glass-fibe...
The selection of medium material and the parameter design has the key influence on the loss of pulse transmission line. According to distributed parameter theory and electromagnetic microwave theory, the computing formulas of loss of epoxy-glass-fibe...
2005,
17.
Abstract:
64 keV Ni ion implantation of a dose of 1×1017cm-2 was performed at room temperature in rutile TiO2 single crystals in which metallic Ni nanoparticles formed directly. Transmission electron microscopy and a superconducting quantum interference device...
64 keV Ni ion implantation of a dose of 1×1017cm-2 was performed at room temperature in rutile TiO2 single crystals in which metallic Ni nanoparticles formed directly. Transmission electron microscopy and a superconducting quantum interference device...
2005,
17.
Abstract:
A coaxial electrode experimental apparatus with water dielectric capacitor was set up, high voltage breakdown experiments for polished and unpolished surface of electrodes with microsecond charging were respectively carried out. The experimental resu...
A coaxial electrode experimental apparatus with water dielectric capacitor was set up, high voltage breakdown experiments for polished and unpolished surface of electrodes with microsecond charging were respectively carried out. The experimental resu...
2005,
17.
Abstract:
This paper presents a new theory to explain the synchrotron radiation. When charged particle does circular motion in the accelerator, the magnetic field of the accelerator can be taken as periodic, and equivalent to virtual photon. By Compton scatter...
This paper presents a new theory to explain the synchrotron radiation. When charged particle does circular motion in the accelerator, the magnetic field of the accelerator can be taken as periodic, and equivalent to virtual photon. By Compton scatter...
2005,
17.
Abstract:
The voltage response of a printed circuit board (PCB) in a metallic shielding enclosure excited by an external electromagnetic field is an important factor when considering the coupling of an external electromagnetic field to electronic systems. In t...
The voltage response of a printed circuit board (PCB) in a metallic shielding enclosure excited by an external electromagnetic field is an important factor when considering the coupling of an external electromagnetic field to electronic systems. In t...
2005,
17.
Abstract:
The initial value of the convergence half angle in the iterative synthesis is discussed and a more logical function is given for assigning it. With the application of the new function, the results of normal and high -convergence Pierce guns are compl...
The initial value of the convergence half angle in the iterative synthesis is discussed and a more logical function is given for assigning it. With the application of the new function, the results of normal and high -convergence Pierce guns are compl...
2005,
17.
Abstract:
Characteristics of ion noise in a klystron was discussed by using a hybrid model. One-dimensional particle-in-Cell method (PIC) simulation code is developed and the relation between ion noise and phase distortion was obtained. The characteristics of ...
Characteristics of ion noise in a klystron was discussed by using a hybrid model. One-dimensional particle-in-Cell method (PIC) simulation code is developed and the relation between ion noise and phase distortion was obtained. The characteristics of ...
2005,
17.
Abstract:
Through numerical calculation, the high frequency characteristics of magnetically insulated line oscillator （MILO） coaxial slow wave structure(SWS)，the frequency of the eigen-modes and its distribution of coaxial SWS are presented. The sizes of MILO ...
Through numerical calculation, the high frequency characteristics of magnetically insulated line oscillator （MILO） coaxial slow wave structure(SWS)，the frequency of the eigen-modes and its distribution of coaxial SWS are presented. The sizes of MILO ...
2005,
17.
Abstract:
Theoretical and particle simulation methods are used to investigate the transportation processes of intense relativistic electron beam(IREBs) guided by low magnetic field. It is shown that in the foilless diode, a magnetic field of tapered profile al...
Theoretical and particle simulation methods are used to investigate the transportation processes of intense relativistic electron beam(IREBs) guided by low magnetic field. It is shown that in the foilless diode, a magnetic field of tapered profile al...
2005,
17.
Abstract:
Starting from general transmission line equation with an electron beam, a self-consistent nonlinear analysis on 3 mm band second-harmonic complex cavity gyrotron with gradual transition is presented, in which the multiple mode interacting with a elec...
Starting from general transmission line equation with an electron beam, a self-consistent nonlinear analysis on 3 mm band second-harmonic complex cavity gyrotron with gradual transition is presented, in which the multiple mode interacting with a elec...
