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RSS2002 Vol. 14, No. 03
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2002,
14.
Abstract:
This paper presents the triggering property of SF6-N2 mixtures triggered by a quadrupled Nd:YAG laser. The delay and jitter increased as the pressure and the percentage of SF6 in SF6-N2 mixtures increased. The working ratio followed the same rule. Th...
This paper presents the triggering property of SF6-N2 mixtures triggered by a quadrupled Nd:YAG laser. The delay and jitter increased as the pressure and the percentage of SF6 in SF6-N2 mixtures increased. The working ratio followed the same rule. Th...
2002,
14.
Abstract:
For a particular pulsed-power generator, i.e., fixed pinch current as well as its rise time, the z-pinch load (initial radius r0 and line mass density m0 ) should be optimized to maximize the x-radiation. The radial density profile of the gas load pr...
For a particular pulsed-power generator, i.e., fixed pinch current as well as its rise time, the z-pinch load (initial radius r0 and line mass density m0 ) should be optimized to maximize the x-radiation. The radial density profile of the gas load pr...
2002,
14.
Abstract:
The effects of electron flux on the optical properties of ZnO/K2SiO3 thermal control coating are studied. Th e test specimens were exposed to electrons at a flux of 5×1011/cm2·s，8×1011/cm2·s，1×1012/cm2·s and 5×1012/cm2·s, respectively . The irradiati...
The effects of electron flux on the optical properties of ZnO/K2SiO3 thermal control coating are studied. Th e test specimens were exposed to electrons at a flux of 5×1011/cm2·s，8×1011/cm2·s，1×1012/cm2·s and 5×1012/cm2·s, respectively . The irradiati...
2002,
14.
Abstract:
A high-power laser beam illuminates a photocathode surface placed on an end wall of an RF cavity. The emitted electrons are accelerated immediately to a relativistic energy by the strong RF field in the cavity. But space charge effect induces beam em...
A high-power laser beam illuminates a photocathode surface placed on an end wall of an RF cavity. The emitted electrons are accelerated immediately to a relativistic energy by the strong RF field in the cavity. But space charge effect induces beam em...
2002,
14.
Abstract:
To obtain high average current electron beams for high average power Free Electron Laser (FEL), a DC-SC photocathode injector is designed. It consists of DC extraction gap, 1+1/2 superconducting cavity and coaxial input system. High quality electron ...
To obtain high average current electron beams for high average power Free Electron Laser (FEL), a DC-SC photocathode injector is designed. It consists of DC extraction gap, 1+1/2 superconducting cavity and coaxial input system. High quality electron ...
2002,
14.
Abstract:
Aiming at the technical request of high power injector, we designed two Nylon radial graded insulation supports on the heads of cathode and anode of the existing 2MeV injector. The experiment results showed that, on the basis of credible insulation, ...
Aiming at the technical request of high power injector, we designed two Nylon radial graded insulation supports on the heads of cathode and anode of the existing 2MeV injector. The experiment results showed that, on the basis of credible insulation, ...
2002,
14.
Abstract:
This paper presents the distinct characteristics of biaxial crystals caused by inherent stress using cone-shape d interference in the samples. The results of optical experiment show that the characteristics of light uniformity depend greatly on the c...
This paper presents the distinct characteristics of biaxial crystals caused by inherent stress using cone-shape d interference in the samples. The results of optical experiment show that the characteristics of light uniformity depend greatly on the c...
2002,
14.
Abstract:
The experimental studies of Ni-like Ag x-ray laser and plasma diagnosis by moiré deflection method were performed with ShenguangII laser facility. The saturated output of Ni-like Ag x-ray laser and the moiré deflectogram including the electron densit...
The experimental studies of Ni-like Ag x-ray laser and plasma diagnosis by moiré deflection method were performed with ShenguangII laser facility. The saturated output of Ni-like Ag x-ray laser and the moiré deflectogram including the electron densit...
2002,
14.
Abstract:
The periodic and non-periodic multilayers were designed by using a random number to change each layer of multilayers and a suitable merit function. Ion beam sputtering and magnetron sputtering were used to fabricate various multilayers including peri...
The periodic and non-periodic multilayers were designed by using a random number to change each layer of multilayers and a suitable merit function. Ion beam sputtering and magnetron sputtering were used to fabricate various multilayers including peri...
2002,
14.
Abstract:
This paper reports a theoretical method to calculate the resolved absorption spectra and emission spectra (optically thin) of hot dense plasmas. Due to its fully relativistic treatment incorporated with the quantum defect theory, it calculates the ab...
This paper reports a theoretical method to calculate the resolved absorption spectra and emission spectra (optically thin) of hot dense plasmas. Due to its fully relativistic treatment incorporated with the quantum defect theory, it calculates the ab...
2002,
14.
Abstract:
In this paper, the new discharge circuit of power conditioning system for high power laser is studied. The theoretical model of the main discharge circuit is established. The pre-ionization circuit is studied in experiment. In addition, the explosion...
In this paper, the new discharge circuit of power conditioning system for high power laser is studied. The theoretical model of the main discharge circuit is established. The pre-ionization circuit is studied in experiment. In addition, the explosion...
2002,
14.
Abstract:
The physical process to fabricate hollow glass microspheres(HGM) by the Liquid Droplet Method in a 7-meter-high multi-zone high temperature furnace has been modeled mathematically. And the model quantitatively describes the whole process, through whi...
The physical process to fabricate hollow glass microspheres(HGM) by the Liquid Droplet Method in a 7-meter-high multi-zone high temperature furnace has been modeled mathematically. And the model quantitatively describes the whole process, through whi...
2002,
14.
Abstract:
The X-ray radiation can be used in heating sandwich type tamped sample targets to produce a uniform plasmas, which is essential for absorption spectrum measurement experiments to provide mean ingful quantitative data on radiative and material propert...
The X-ray radiation can be used in heating sandwich type tamped sample targets to produce a uniform plasmas, which is essential for absorption spectrum measurement experiments to provide mean ingful quantitative data on radiative and material propert...
2002,
14.
Abstract:
SG-Ⅱlaser facility has recently been able to deliver 3w 0 (blue) light with the outer conversion efficiency of ≥60% during its routine operation. The pinhole injection experiment this year indicated the optical quality of the blue, especially the sid...
SG-Ⅱlaser facility has recently been able to deliver 3w 0 (blue) light with the outer conversion efficiency of ≥60% during its routine operation. The pinhole injection experiment this year indicated the optical quality of the blue, especially the sid...
2002,
14.
Abstract:
Partial coherence source is a key part in the laser system using echelon-free introduced spatial incoherence beam smoothing technique. Different kinds of partial coherence sources have been studied experimentally for improving the uniformity of laser...
Partial coherence source is a key part in the laser system using echelon-free introduced spatial incoherence beam smoothing technique. Different kinds of partial coherence sources have been studied experimentally for improving the uniformity of laser...
2002,
14.
Abstract:
Hard X-ray continuum generated from interaction of UV high intensity ultrashort pulse laser with solid target has been investigated by experiment. P-polarized light irradiate 5mm Cu slab with 45° ，the hard x-ray with energy of 200keV has been detecte...
Hard X-ray continuum generated from interaction of UV high intensity ultrashort pulse laser with solid target has been investigated by experiment. P-polarized light irradiate 5mm Cu slab with 45° ，the hard x-ray with energy of 200keV has been detecte...
2002,
14.
Abstract:
In this paper, it is supposed that there is a gap in the interface of two contacting steel plates due to thermal deformation under laser beam irradiation, and this gap will affect heat transfer in this interface obviously. This supposition is testifi...
In this paper, it is supposed that there is a gap in the interface of two contacting steel plates due to thermal deformation under laser beam irradiation, and this gap will affect heat transfer in this interface obviously. This supposition is testifi...
2002,
14.
Abstract:
Basic characters of digital holographic profiling including its system error, resolution, imaging depth, and the size lize limit of the recorded object are theoretically discussed in this papers. It is pointed out that the system error of digital hol...
Basic characters of digital holographic profiling including its system error, resolution, imaging depth, and the size lize limit of the recorded object are theoretically discussed in this papers. It is pointed out that the system error of digital hol...
2002,
14.
Abstract:
Laser conditioning is a process w here the damage threshold of the coating is increased or the damage created is minimized so that it does not grow upon further irradiation. It is feasible that the damage threshold be improved safely and the power de...
Laser conditioning is a process w here the damage threshold of the coating is increased or the damage created is minimized so that it does not grow upon further irradiation. It is feasible that the damage threshold be improved safely and the power de...
2002,
14.
Abstract:
A new family of solution of the non-paraxial wave equation that depicts the ultrashort pulsed light beam propagation in free space is given, of which the spatial transverse part is Bessel function while the temporal profile can be arbitrary. Therefor...
A new family of solution of the non-paraxial wave equation that depicts the ultrashort pulsed light beam propagation in free space is given, of which the spatial transverse part is Bessel function while the temporal profile can be arbitrary. Therefor...
2002,
14.
Abstract:
Wavefront aberration caused by atmospheric turbulence weakens the capability of imaging optical system. Artificial beacon is used to correct the aberration successfully. An e xperimental beacon system and it's results are presented. The relations bet...
Wavefront aberration caused by atmospheric turbulence weakens the capability of imaging optical system. Artificial beacon is used to correct the aberration successfully. An e xperimental beacon system and it's results are presented. The relations bet...
2002,
14.
Abstract:
In this paper, a new method of laser beam combination by SBS is proposed. In this method, the pump pulse cluster, which consists of series pulses that is distributed by various time, is incident at one side while the Stokes seed is incident at the ot...
In this paper, a new method of laser beam combination by SBS is proposed. In this method, the pump pulse cluster, which consists of series pulses that is distributed by various time, is incident at one side while the Stokes seed is incident at the ot...
2002,
14.
Abstract:
A new kind of light beam generated from superposing cosh-Gaussian beams is proposed. Two types of superposing light field with different weight coefficients are disscussed in detail. It was found that the beam profiles have a nearly flat top but its ...
A new kind of light beam generated from superposing cosh-Gaussian beams is proposed. Two types of superposing light field with different weight coefficients are disscussed in detail. It was found that the beam profiles have a nearly flat top but its ...
2002,
14.
Abstract:
This paper describes a new method of pump-coupling. Ring-LD tightly surrounds YLF stick to accomplish directly coupled side-pumping, total pumping power is 3kW. Correspondingly ideal pumping light utilizing efficiency and pump-field distribution are ...
This paper describes a new method of pump-coupling. Ring-LD tightly surrounds YLF stick to accomplish directly coupled side-pumping, total pumping power is 3kW. Correspondingly ideal pumping light utilizing efficiency and pump-field distribution are ...
2002,
14.
Abstract:
Using the traditional technique to measure laser facula with a detector array, the array should be large enough if the facule has a large size, Thas large amount of detectors are needed which increase the cost. The design of rotational device of arra...
Using the traditional technique to measure laser facula with a detector array, the array should be large enough if the facule has a large size, Thas large amount of detectors are needed which increase the cost. The design of rotational device of arra...
2002,
14.
Abstract:
A large aperture discharge-pumped KrF laser module with simple spark gaps was developed. The laser beam cross section of 4cm×3cm and the maximum laser output energy of 1.3J in 20ns were obtained at the charging voltage of 30kV and gas mixtures of ［F2...
A large aperture discharge-pumped KrF laser module with simple spark gaps was developed. The laser beam cross section of 4cm×3cm and the maximum laser output energy of 1.3J in 20ns were obtained at the charging voltage of 30kV and gas mixtures of ［F2...
2002,
14.
Abstract:
The latest development of research on femtosecond nonlinear optics is introduced in this article. Recent progress in ultrafast optics has allowed the generation of ultraintense light pulses comprising merely a few field oscillation cycles. The arisin...
The latest development of research on femtosecond nonlinear optics is introduced in this article. Recent progress in ultrafast optics has allowed the generation of ultraintense light pulses comprising merely a few field oscillation cycles. The arisin...
2002,
14.
Abstract:
A chemical oxygen-iodine laser (COIL) with a square pipe-array jet-type singlet oxygen generator (SPJSOG)， an array of supersonic I2 – O2 mixing nozzles and nitrogen buffer gases was demonstrated in our laboratory. In our primary experimental stage, ...
A chemical oxygen-iodine laser (COIL) with a square pipe-array jet-type singlet oxygen generator (SPJSOG)， an array of supersonic I2 – O2 mixing nozzles and nitrogen buffer gases was demonstrated in our laboratory. In our primary experimental stage, ...
2002,
14.
Abstract:
This report presents the time-depended fully implicit LU algorithm, which was used to solve the Navier-Stokes equations with NND difference scheme in numerical simulation to the flowfields of supersonic diffuser in the pressure recovery system. The a...
This report presents the time-depended fully implicit LU algorithm, which was used to solve the Navier-Stokes equations with NND difference scheme in numerical simulation to the flowfields of supersonic diffuser in the pressure recovery system. The a...
2002,
14.
Abstract:
In this paper, the samplesurface, fracture surface and metallagraphic structure are examined by SEM of the loaded beams and plates irradiated by CW CO2 laser, and the influence of irradiation of high power laser in the material properties of LY12 is ...
In this paper, the samplesurface, fracture surface and metallagraphic structure are examined by SEM of the loaded beams and plates irradiated by CW CO2 laser, and the influence of irradiation of high power laser in the material properties of LY12 is ...
2002,
14.
Abstract:
In a COIL , the application of normal type virtual confocal and containing roof-top mirror fold unstable resonators are analyzed using simplified kinetics and gain medium model , from the calculation result , a conclusion can be drawn that containing...
In a COIL , the application of normal type virtual confocal and containing roof-top mirror fold unstable resonators are analyzed using simplified kinetics and gain medium model , from the calculation result , a conclusion can be drawn that containing...
2002,
14.
Abstract:
The stability of the free electron laser output is mainly determined by the stability of the electron beam, an d the stability of the electron beam based on RF linac is mainly determined by t he stability of the microwave source. To realize the satur...
The stability of the free electron laser output is mainly determined by the stability of the electron beam, an d the stability of the electron beam based on RF linac is mainly determined by t he stability of the microwave source. To realize the satur...
2002,
14.
Abstract:
An analysis method used for the double reentrant cavity of multiple-beam klystron is developed in this paper. According to the field equivalent principle, the equivalent model cavity is divided into two regular regions. The field of each region is st...
An analysis method used for the double reentrant cavity of multiple-beam klystron is developed in this paper. According to the field equivalent principle, the equivalent model cavity is divided into two regular regions. The field of each region is st...
2002,
14.
Abstract:
A6 relativistic magnetron`s resonated system is calculated and simulated by equivalent circuit and high frequency structure simulator (HFSS of Agilent), and the effect of end cap to resonated frequency is especially paid attention to in this paper. R...
A6 relativistic magnetron`s resonated system is calculated and simulated by equivalent circuit and high frequency structure simulator (HFSS of Agilent), and the effect of end cap to resonated frequency is especially paid attention to in this paper. R...
2002,
14.
Abstract:
In this paper, Vlasov antenna is studied systematically by the moment method (MM) and finite difference time domain (FDTD). Based on the simulation results, the process of mode conversion in the waveguide and radiation through the aperture is describ...
In this paper, Vlasov antenna is studied systematically by the moment method (MM) and finite difference time domain (FDTD). Based on the simulation results, the process of mode conversion in the waveguide and radiation through the aperture is describ...
2002,
14.
Abstract:
This article introduces the construction and working principle of angle tracking system of Surface-to-air Radar Jam System, mainly analyses six kinds of matters which effect the tracking accuracy and brings forward how to inprove the tracking accurac...
This article introduces the construction and working principle of angle tracking system of Surface-to-air Radar Jam System, mainly analyses six kinds of matters which effect the tracking accuracy and brings forward how to inprove the tracking accurac...
2002,
14.
Abstract:
The X-band transit time tube oscillator (TTTO) is a novel high power microwave device, simulation shows that it frequency-spectrum characteristic is related with its output, so the frequency spectrum diagnosis is an important work for the X-band TTTO...
The X-band transit time tube oscillator (TTTO) is a novel high power microwave device, simulation shows that it frequency-spectrum characteristic is related with its output, so the frequency spectrum diagnosis is an important work for the X-band TTTO...
2002,
14.
Abstract:
A new type detector was presented in this paper, which was developed based on novel sensors and new measuring circuits to achieve good sensitivity and reliability for HPM power measurement. Com pared with the previously developed X-band HPM detector,...
A new type detector was presented in this paper, which was developed based on novel sensors and new measuring circuits to achieve good sensitivity and reliability for HPM power measurement. Com pared with the previously developed X-band HPM detector,...
2002,
14.
Abstract:
This paper discusses the basic principle of high-voltage pulse corona for desulfuration and its demand for the performance of pulse voltage generator with repeat frequeny. Based on the discuss ion of the influence on supply system by the reactor, des...
This paper discusses the basic principle of high-voltage pulse corona for desulfuration and its demand for the performance of pulse voltage generator with repeat frequeny. Based on the discuss ion of the influence on supply system by the reactor, des...
2002,
14.
Abstract:
The theoretical models and the structure designs of the high power diode are described in this paper. The insulator, the structure of cathode and anode, the guide magnetic-field are analyzed and calculated in detail. The space charge limited current ...
The theoretical models and the structure designs of the high power diode are described in this paper. The insulator, the structure of cathode and anode, the guide magnetic-field are analyzed and calculated in detail. The space charge limited current ...
2002,
14.
Abstract:
Reliability of the sealed vacuum device is very important, and the main reason that affects reliability is its vacuum. As the degree of vacuum cannot be measured directly, an indirectly method is adopted in this paper. In this paper, the principle in...
Reliability of the sealed vacuum device is very important, and the main reason that affects reliability is its vacuum. As the degree of vacuum cannot be measured directly, an indirectly method is adopted in this paper. In this paper, the principle in...
