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RSS2005 Vol. 17, No. 02
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2005,
17: 161- .
Abstract:
With the continuous increase of COIL output power, the conventional HR film stack gradually can't satisfy the practical requirements. In this paper, on the base of multiple frequency film stack, a -200 mm HR phase retardance mirror at 45° incidence i...
With the continuous increase of COIL output power, the conventional HR film stack gradually can't satisfy the practical requirements. In this paper, on the base of multiple frequency film stack, a -200 mm HR phase retardance mirror at 45° incidence i...
2005,
17: 164- .
Abstract:
A beam-gas-interaction model was developed by combining the scalar diffraction theory with the N-S equations. With this model, the high power density beam propagating through a Zshape tube with blowing non-absorbing gas in at different velocities wa...
A beam-gas-interaction model was developed by combining the scalar diffraction theory with the N-S equations. With this model, the high power density beam propagating through a Zshape tube with blowing non-absorbing gas in at different velocities wa...
2005,
17: 169- .
Abstract:
The effect of different parameters on the thermal blooming for laser channel transmission is described. The numerical results suggest that the effect of thermal blooming on the beam quality for laser channel transmission must be considered, when the ...
The effect of different parameters on the thermal blooming for laser channel transmission is described. The numerical results suggest that the effect of thermal blooming on the beam quality for laser channel transmission must be considered, when the ...
2005,
17: 173- .
Abstract:
In this paper, the principle and experimental setup of PLIF is discussed. Through the proper choice of OH excited lines and improving the beam quality of the laser by spatial filter, the two-dimensional temperature field in a methane-air flame can be...
In this paper, the principle and experimental setup of PLIF is discussed. Through the proper choice of OH excited lines and improving the beam quality of the laser by spatial filter, the two-dimensional temperature field in a methane-air flame can be...
2005,
17: 177- .
Abstract:
The framing photographs of XeF2 photodissociation wave (PDW) under different experimental conditions have been taken, showing the forming process of the PDW. The variations of the radius, thickness and developing velocity of the PDW with time were ob...
The framing photographs of XeF2 photodissociation wave (PDW) under different experimental conditions have been taken, showing the forming process of the PDW. The variations of the radius, thickness and developing velocity of the PDW with time were ob...
2005,
17: 181- .
Abstract:
The computational simulations of the mixing flowfield of supersonic chemical oxygeniodine laser (COIL) using FLUENT (CFD) computation of fluid dynamics commercial software have been performed. The distribution of the averaged small signal gain along...
The computational simulations of the mixing flowfield of supersonic chemical oxygeniodine laser (COIL) using FLUENT (CFD) computation of fluid dynamics commercial software have been performed. The distribution of the averaged small signal gain along...
2005,
17: 186- .
Abstract:
The deformation of two contacting plates irradiated by laser can influence heat transfer by contact obviously. The effect of atmospheric pressure on heat transfer by contact are analyzed by some experiments and numerical simulations. It is shown that...
The deformation of two contacting plates irradiated by laser can influence heat transfer by contact obviously. The effect of atmospheric pressure on heat transfer by contact are analyzed by some experiments and numerical simulations. It is shown that...
2005,
17: 191- .
Abstract:
The laser-induced damage threshold(LIDT) and damage morphology of Ta2O5/SiO2 narrow-band interference filters under single-pulse laser and free-running laser were investigated. The weak absorptance and the standing-wave fields of the filters have als...
The laser-induced damage threshold(LIDT) and damage morphology of Ta2O5/SiO2 narrow-band interference filters under single-pulse laser and free-running laser were investigated. The weak absorptance and the standing-wave fields of the filters have als...
2005,
17: 197- .
Abstract:
Propagation of laser beam through turbulent atmosphere was numerically studied using phase screen approximation. And partially coherent flat-topped Gaussian beam was expanded as a superposition of independent Hermite-Gaussian modes. In order to fit t...
Propagation of laser beam through turbulent atmosphere was numerically studied using phase screen approximation. And partially coherent flat-topped Gaussian beam was expanded as a superposition of independent Hermite-Gaussian modes. In order to fit t...
2005,
17: 203- .
Abstract:
The X-ray conversion material in radiophotography system plays a very important role. Its efficiency is a crucial factor to improve the system QDE(quantum detection efficiency). The luminescent efficiency of CsI∶Tl crystal excited by Xray is analyze...
The X-ray conversion material in radiophotography system plays a very important role. Its efficiency is a crucial factor to improve the system QDE(quantum detection efficiency). The luminescent efficiency of CsI∶Tl crystal excited by Xray is analyze...
2005,
17: 206- .
Abstract:
The density and drift velocity of the low-temperature plasma produced by a cable plasma gun array are measured with charge collectors under positive(135 V) and negative bias(-117 V) and low-pressure air-embedment(0.5 Pa) without bias. The drift veloc...
The density and drift velocity of the low-temperature plasma produced by a cable plasma gun array are measured with charge collectors under positive(135 V) and negative bias(-117 V) and low-pressure air-embedment(0.5 Pa) without bias. The drift veloc...
2005,
17: 209- .
Abstract:
Filling gas on the spot is widely used to fabricate the hohlraum gas-filled target. This paper focuses on the synthesis of the polypyromellitamic acid, preparation of polyimide film by the method of spin coating and gas-filled targets assemblage. Two...
Filling gas on the spot is widely used to fabricate the hohlraum gas-filled target. This paper focuses on the synthesis of the polypyromellitamic acid, preparation of polyimide film by the method of spin coating and gas-filled targets assemblage. Two...
2005,
17: 213- .
Abstract:
ZrO2 thin films were deposited on K9 glass substrates by e-beam evaporation method and some samples were treated with low energy O+2 after deposition. Surface weak absorption was measured using surface thermal lens technique, and micro-defect density...
ZrO2 thin films were deposited on K9 glass substrates by e-beam evaporation method and some samples were treated with low energy O+2 after deposition. Surface weak absorption was measured using surface thermal lens technique, and micro-defect density...
2005,
17: 217- .
Abstract:
ZrO2 coatings were deposited on different substrates of Yb∶YAG and fused silica by electron beam evaporation. After annealed for 12 hours at 673 K and 1 073 K respectively, weak absorption of coatings was measured by surface thermal lensing, and then...
ZrO2 coatings were deposited on different substrates of Yb∶YAG and fused silica by electron beam evaporation. After annealed for 12 hours at 673 K and 1 073 K respectively, weak absorption of coatings was measured by surface thermal lensing, and then...
2005,
17: 222- .
Abstract:
Zirconium oxide films were deposited on SiO2 substrates using high vacuum electron beam evaporation at room temperature．The films' transmittance and surface structure were investigated by means of ultraviolet spectrophotometer，AFM and XRD．The main ef...
Zirconium oxide films were deposited on SiO2 substrates using high vacuum electron beam evaporation at room temperature．The films' transmittance and surface structure were investigated by means of ultraviolet spectrophotometer，AFM and XRD．The main ef...
2005,
17: 225- .
Abstract:
The effects of electron number density and its profile on the microwave propagation characteristics in a plasma slab are discussed. The incident wave travels vertically on the plasma slab. The plasma layer is modeled as adjacent, homogeneous sub-slap...
The effects of electron number density and its profile on the microwave propagation characteristics in a plasma slab are discussed. The incident wave travels vertically on the plasma slab. The plasma layer is modeled as adjacent, homogeneous sub-slap...
2005,
17: 229- .
Abstract:
In light of poloidal motion velocity changed by electric drift, the paper derives the equation for safety factor when negative radial electric field existed, analyzes the influence of safety factor upon the drift displacement and motion orbit of char...
In light of poloidal motion velocity changed by electric drift, the paper derives the equation for safety factor when negative radial electric field existed, analyzes the influence of safety factor upon the drift displacement and motion orbit of char...
2005,
17: 233- .
Abstract:
In this paper, a novel way that can be combined with FDTD methods to deal with the EMP response on thin wire with resistance load is developed, in which the thin wire is divided into three parts and described by different partial differential equatio...
In this paper, a novel way that can be combined with FDTD methods to deal with the EMP response on thin wire with resistance load is developed, in which the thin wire is divided into three parts and described by different partial differential equatio...
2005,
17: 237- .
Abstract:
This paper presents the coaxial interlaced disc-loaded slow-wave system of the relativistic traveling wave tube(TWT). The dispersion function of the slow-wave structure is deduced by variation method and Bessel function orthogonatity without regard f...
This paper presents the coaxial interlaced disc-loaded slow-wave system of the relativistic traveling wave tube(TWT). The dispersion function of the slow-wave structure is deduced by variation method and Bessel function orthogonatity without regard f...
2005,
17: 241- .
Abstract:
A novel resonator of quasi-periodic structure is put out in the paper. The interaction between the beam and the microwave field in the cavity is theoretically investigated with 2.5 dimensional particle simulation code. With this type of structures, t...
A novel resonator of quasi-periodic structure is put out in the paper. The interaction between the beam and the microwave field in the cavity is theoretically investigated with 2.5 dimensional particle simulation code. With this type of structures, t...
2005,
17: 245- .
Abstract:
In this paper, the experimental method of HPM breakdown of coaxialcable and connector is introduced. It is given by experimentaly that the microwave breakdown thresholds of several kinds of coaxial-cables and connectors vary with microwave frequency...
In this paper, the experimental method of HPM breakdown of coaxialcable and connector is introduced. It is given by experimentaly that the microwave breakdown thresholds of several kinds of coaxial-cables and connectors vary with microwave frequency...
2005,
17: 249- .
Abstract:
Variation relation between the effective emitting area of field induced explosive ementting graphite cathode and time has been acquired experimentally under different externally applied electric field corresponding to different anode cathode gaps. It...
Variation relation between the effective emitting area of field induced explosive ementting graphite cathode and time has been acquired experimentally under different externally applied electric field corresponding to different anode cathode gaps. It...
2005,
17: 253- .
Abstract:
It requires knowledge of stochastic features of lightning electromagnetic pulse (LEMP) to study effect evaluation of the potentially harmful coupling of LEMP to the electronic systems. Based on statistical characters of lightning currents, LEMP under...
It requires knowledge of stochastic features of lightning electromagnetic pulse (LEMP) to study effect evaluation of the potentially harmful coupling of LEMP to the electronic systems. Based on statistical characters of lightning currents, LEMP under...
2005,
17: 262- .
Abstract:
To control the BEPCⅡ-linac beam performance within the upgrading goals, the error effects such as the initial beam offset and the accelerator misalignment effects on the beam performance have been systematically studied with beam modeling. The most i...
To control the BEPCⅡ-linac beam performance within the upgrading goals, the error effects such as the initial beam offset and the accelerator misalignment effects on the beam performance have been systematically studied with beam modeling. The most i...
2005,
17: 263- .
Abstract:
A 3.5 MeV injector for linear induction accelerator has been built up at Institute of Fluid Physics, China Academy of Engineering Physics. The injector is based on the principle of inductive adder. It consists of 12 induction cells. Seven induction c...
A 3.5 MeV injector for linear induction accelerator has been built up at Institute of Fluid Physics, China Academy of Engineering Physics. The injector is based on the principle of inductive adder. It consists of 12 induction cells. Seven induction c...
2005,
17: 268- .
Abstract:
In this paper, the results of repetitive nanosecond breakdown in transformer oil are introduced. The breakdown characteristics of 25# transformer oil under repetitive nanosecond pulses ranged from 1 Hz to 1 000 Hz and the gap distances range from 0.3...
In this paper, the results of repetitive nanosecond breakdown in transformer oil are introduced. The breakdown characteristics of 25# transformer oil under repetitive nanosecond pulses ranged from 1 Hz to 1 000 Hz and the gap distances range from 0.3...
2005,
17: 271- .
Abstract:
This paper describes the aberration and distortion of e-beam deflection magnetic field in which the parameters keep close to in the normal solution. The relationship between the principal trajectory of e-beam and aberrations has been investigated in ...
This paper describes the aberration and distortion of e-beam deflection magnetic field in which the parameters keep close to in the normal solution. The relationship between the principal trajectory of e-beam and aberrations has been investigated in ...
2005,
17: 275- .
Abstract:
The slow extraction of beam from CSR main ring(CSRm) is designed and simply simulated by Winagile program in this paper. The amplitude-momentum selection scheme is used, and both fast and slow extraction will be arranged in the same extraction passag...
The slow extraction of beam from CSR main ring(CSRm) is designed and simply simulated by Winagile program in this paper. The amplitude-momentum selection scheme is used, and both fast and slow extraction will be arranged in the same extraction passag...
2005,
17: 279- .
Abstract:
The design of lengthening the diffusion lengths of negative electron affinity emitter GaAs was introduced; the secondary electron emission coefficients of normal GaAs was compared with that of specially designed GaAs.The conclusion shows that the dev...
The design of lengthening the diffusion lengths of negative electron affinity emitter GaAs was introduced; the secondary electron emission coefficients of normal GaAs was compared with that of specially designed GaAs.The conclusion shows that the dev...
2005,
17: 283- .
Abstract:
A numerical method in time domain on skin current of ground laying shielded cable excited by electromagnetic pulse is studied. The method overcomes the ambiguity of the transmission line theory in studying such a problem. The finite difference time d...
A numerical method in time domain on skin current of ground laying shielded cable excited by electromagnetic pulse is studied. The method overcomes the ambiguity of the transmission line theory in studying such a problem. The finite difference time d...
2005,
17: 287- .
Abstract:
Proton irradiation at temperatures of 310 and 350 ℃ has been researched using 2 MeV proton to a atom displacement damage level of 5 dpa at a dose rate of 8.5×1013 cm－２·s－１. Amorphization and Fe loss of Zr(Cr,Fe)2 and ZrFe2 precipitates are observed. ...
Proton irradiation at temperatures of 310 and 350 ℃ has been researched using 2 MeV proton to a atom displacement damage level of 5 dpa at a dose rate of 8.5×1013 cm－２·s－１. Amorphization and Fe loss of Zr(Cr,Fe)2 and ZrFe2 precipitates are observed. ...
2005,
17: 291- .
Abstract:
A new radiochromic film is developed by using a polymer as the base and doping an organic dye and an organic halide. It is a clear transparent solid film, but it becomes blue after irradiated by γ-ray. As shown in the UV-VIS spectrum of irradiated fi...
A new radiochromic film is developed by using a polymer as the base and doping an organic dye and an organic halide. It is a clear transparent solid film, but it becomes blue after irradiated by γ-ray. As shown in the UV-VIS spectrum of irradiated fi...
2005,
17: 295- .
Abstract:
The gas puff is one of the main loads used in Z pinch research. In this paper the basic physics process of the Laval nozzle on Qiangguang I generator is analyzed using one dimension isentropic gas dynamics equation.The Mach number 4.6 of the gas flow...
The gas puff is one of the main loads used in Z pinch research. In this paper the basic physics process of the Laval nozzle on Qiangguang I generator is analyzed using one dimension isentropic gas dynamics equation.The Mach number 4.6 of the gas flow...
2005,
17: 303- .
Abstract:
The parameters of an upgraded optical klystron (OK) were given by 3-dimensional finite element electromagnetic computation for free electron laser (FEL) research in Hefei electron storage ring. The Hefei Light Source (HLS) is routinely operated at 80...
The parameters of an upgraded optical klystron (OK) were given by 3-dimensional finite element electromagnetic computation for free electron laser (FEL) research in Hefei electron storage ring. The Hefei Light Source (HLS) is routinely operated at 80...
2005,
17: 304- .
Abstract:
Power flow characteristics between a plasma opening switch (POS) and an inductive load were investigated via particle-in-cell simulations based on the experimental parameters. A dynamic switch model was adopted to simulate the POS. The switch voltage...
Power flow characteristics between a plasma opening switch (POS) and an inductive load were investigated via particle-in-cell simulations based on the experimental parameters. A dynamic switch model was adopted to simulate the POS. The switch voltage...
2005,
17: 309- .
Abstract:
Power MOSFET IRF540N and IRF9530 were irradiated by X-ray and gamma ray, and the relationship of their threshold voltage and absorbed dose was studied. It is found that the change of threshold voltage value fits in exponential law with absorbed dose,...
Power MOSFET IRF540N and IRF9530 were irradiated by X-ray and gamma ray, and the relationship of their threshold voltage and absorbed dose was studied. It is found that the change of threshold voltage value fits in exponential law with absorbed dose,...
2005,
17: 313- .
Abstract:
The paper introduces the principle of pulse form network (PFN), the PSpice simulation result of Marx-PFN and the design process of 200 kV long pulse power generator. A 200 kV long pulsed power generator based on five-stage Marx-PFN has been built, wi...
The paper introduces the principle of pulse form network (PFN), the PSpice simulation result of Marx-PFN and the design process of 200 kV long pulse power generator. A 200 kV long pulsed power generator based on five-stage Marx-PFN has been built, wi...
2005,
17: 317- .
Abstract:
This paper summarizes an experimental study of the delayed breakdown performance of silicon PIN diode. Single PIN diode, double series PIN diodes and stacked PIN diodes in parallel and series were tested,the results shown that the pulsefronts of inpu...
This paper summarizes an experimental study of the delayed breakdown performance of silicon PIN diode. Single PIN diode, double series PIN diodes and stacked PIN diodes in parallel and series were tested,the results shown that the pulsefronts of inpu...
