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RSS2008 Vol. 20, No. 06
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2008,
20.
Abstract:
A new method to perform the large aperture beams sampler with array-lens was put forward. An 25×25 array-lens of wavefront distortion measurement was designed, and an experimental system was settled up. The perfect parallel beam is used to demarcate ...
A new method to perform the large aperture beams sampler with array-lens was put forward. An 25×25 array-lens of wavefront distortion measurement was designed, and an experimental system was settled up. The perfect parallel beam is used to demarcate ...
2008,
20.
Abstract:
A model which combines drift-diffusion equation and heat transmission equation is established. Considering two laser absorption mechanics, including intrinsic carriers interband transition and free carriers inner-band transition, and the interaction...
A model which combines drift-diffusion equation and heat transmission equation is established. Considering two laser absorption mechanics, including intrinsic carriers interband transition and free carriers inner-band transition, and the interaction...
2008,
20.
Abstract:
Before making wind measurements, it is vital to calibrate the new developed Doppler wind lidar system, which can demonstrate and improve the validity of the lidar system. Based on the principle of wind measurement, a new method for the calibration of...
Before making wind measurements, it is vital to calibrate the new developed Doppler wind lidar system, which can demonstrate and improve the validity of the lidar system. Based on the principle of wind measurement, a new method for the calibration of...
2008,
20.
Abstract:
An ultrafast thermoelasticity model for the thermomechanical behaviors in semiconductors irradiated by ultra-short pulse laser is presented based on the complete self-consistent model. It accounts for the coupling effect between lattice temperature a...
An ultrafast thermoelasticity model for the thermomechanical behaviors in semiconductors irradiated by ultra-short pulse laser is presented based on the complete self-consistent model. It accounts for the coupling effect between lattice temperature a...
2008,
20.
Abstract:
Ellipsometry of light scattering from optical thin films are investigated based on reflection ellipsometry measurements from optical thin films. The inverse problem of light scattering from optical films is solved with this method. Diamond-like carbo...
Ellipsometry of light scattering from optical thin films are investigated based on reflection ellipsometry measurements from optical thin films. The inverse problem of light scattering from optical films is solved with this method. Diamond-like carbo...
2008,
20.
Abstract:
Directly etching an active grating in Er/Yb codoped fiber, a compact asymmetric π phase-shifted fiber laser was fabricated. The designed grating length is only 50 mm, the optimal phase shift position is at 29 mm, and the optimal coupling coefficient ...
Directly etching an active grating in Er/Yb codoped fiber, a compact asymmetric π phase-shifted fiber laser was fabricated. The designed grating length is only 50 mm, the optimal phase shift position is at 29 mm, and the optimal coupling coefficient ...
2008,
20.
Abstract:
HfO2 films were prepared by electron beam evaporation on K9 glass. Oxygen flux was varied in the range of 0 mL/min to 25 mL/min by step of 5 mL/min (under standard condition). The residual stress was measured by viewing the substrate deflection using...
HfO2 films were prepared by electron beam evaporation on K9 glass. Oxygen flux was varied in the range of 0 mL/min to 25 mL/min by step of 5 mL/min (under standard condition). The residual stress was measured by viewing the substrate deflection using...
2008,
20.
Abstract:
In methane-hydrogen and methane-helium systems, optical emission spectroscopy(OES) is used to diagnose the active species emission in the low-pressure methane plasma by spiral wave discharge. In experiments, the main species as H(Ha, Hb, Hg) and CH h...
In methane-hydrogen and methane-helium systems, optical emission spectroscopy(OES) is used to diagnose the active species emission in the low-pressure methane plasma by spiral wave discharge. In experiments, the main species as H(Ha, Hb, Hg) and CH h...
2008,
20.
Abstract:
Based on the effective Fresnel number, a simple analytical expression is presented to evaluate the relative focal shift in a circular-aperture lens system which is illuminated by a partially coherent electromagnetic beam. The effective Fresnel number...
Based on the effective Fresnel number, a simple analytical expression is presented to evaluate the relative focal shift in a circular-aperture lens system which is illuminated by a partially coherent electromagnetic beam. The effective Fresnel number...
2008,
20.
Abstract:
In the output image of the visible light CCD irradiated by high intensity light, black area appears inside the white saturation scope. In this paper, the phenomenon is called excessive saturation effect of visible light CCD. In the experiment during ...
In the output image of the visible light CCD irradiated by high intensity light, black area appears inside the white saturation scope. In this paper, the phenomenon is called excessive saturation effect of visible light CCD. In the experiment during ...
2008,
20.
Abstract:
By using the beam coherence-polarization(BCP) matrix method, the expressions for the degree of polarization and intensity of nonuniformly polarized(NUP) beams propagating through an annular aperture are derived, which enable to study the changes in t...
By using the beam coherence-polarization(BCP) matrix method, the expressions for the degree of polarization and intensity of nonuniformly polarized(NUP) beams propagating through an annular aperture are derived, which enable to study the changes in t...
2008,
20.
Abstract:
In indirect-driven inertial confinement fusion(ICF), the hohlraum’s non-equilibrium radiation field brings an unneglectable impact to the ablation process of the capsule’s ablator materials(CH, e.g.). In this paper, an artificial spectrum of the hohl...
In indirect-driven inertial confinement fusion(ICF), the hohlraum’s non-equilibrium radiation field brings an unneglectable impact to the ablation process of the capsule’s ablator materials(CH, e.g.). In this paper, an artificial spectrum of the hohl...
2008,
20.
Abstract:
Mesoporous SiO2 film with 2D p6 mm structure was successfully coated on K9 glasses via the hydrolysis-condensation process and the so-called evaporation induced self-assembly process using P123 as a surfactant. The structure and optical properties of...
Mesoporous SiO2 film with 2D p6 mm structure was successfully coated on K9 glasses via the hydrolysis-condensation process and the so-called evaporation induced self-assembly process using P123 as a surfactant. The structure and optical properties of...
2008,
20.
Abstract:
The sol-gel monolayer silica acid and basic thin films on K9 glass substrates were prepared with the dip method from acid and basic catalyzed silica sols, respectively. Both films have nearly similar optical thickness. The laser-induced damage thresh...
The sol-gel monolayer silica acid and basic thin films on K9 glass substrates were prepared with the dip method from acid and basic catalyzed silica sols, respectively. Both films have nearly similar optical thickness. The laser-induced damage thresh...
2008,
20.
Abstract:
SiO2 thin films were deposited using tetraethoxylsilane as precursor, ammonia as catalyst on K9 glass by sol-gel method. These films were post-treated by ammonia and heat. The properties of the coatings were characterized by ellipsometer, UV-vis spec...
SiO2 thin films were deposited using tetraethoxylsilane as precursor, ammonia as catalyst on K9 glass by sol-gel method. These films were post-treated by ammonia and heat. The properties of the coatings were characterized by ellipsometer, UV-vis spec...
2008,
20.
Abstract:
THz radiation excited from the laser-plasma interaction was numerically simulated using a 2D3V PIC code, and the effects of laser parameters on the THz radiation power and frequency were compared with the results of the linear mode conversion theory....
THz radiation excited from the laser-plasma interaction was numerically simulated using a 2D3V PIC code, and the effects of laser parameters on the THz radiation power and frequency were compared with the results of the linear mode conversion theory....
2008,
20.
Abstract:
The picosecond gated characteristics of X-ray framing camera at different DC bias are examined using sub-ps X-ray source produced by SILEX-Ⅰ facility. The point-source measurement of XFC exposure-time is set up. The dynamic gain is defined based on t...
The picosecond gated characteristics of X-ray framing camera at different DC bias are examined using sub-ps X-ray source produced by SILEX-Ⅰ facility. The point-source measurement of XFC exposure-time is set up. The dynamic gain is defined based on t...
2008,
20.
Abstract:
The transient collisional excited Ni-like Ag 13.9 nm X-ray laser was simulated. Driven by two picosecond short pulses preceded by a 330 ps long prepulse, different short pulses of 1 ps, 2 ps and 3 ps were considered and for each case the angular char...
The transient collisional excited Ni-like Ag 13.9 nm X-ray laser was simulated. Driven by two picosecond short pulses preceded by a 330 ps long prepulse, different short pulses of 1 ps, 2 ps and 3 ps were considered and for each case the angular char...
2008,
20.
Abstract:
Five experiments were introduced in this paper, which were about the effects of the characteristic X-ray of impurity elements on the generation of four new spectral lines of hydrogen gas discharge source bombarding famget. Shield-Experiment and Inten...
Five experiments were introduced in this paper, which were about the effects of the characteristic X-ray of impurity elements on the generation of four new spectral lines of hydrogen gas discharge source bombarding famget. Shield-Experiment and Inten...
2008,
20.
Abstract:
By analyzing time resolution of radiation temperature measurement, the main factors of systemic bias, cable’s length and bandwidth, attenuator’s bandwidth, oscillograph’s bandwidth and sampling rate have been determined. To improve the systemic time ...
By analyzing time resolution of radiation temperature measurement, the main factors of systemic bias, cable’s length and bandwidth, attenuator’s bandwidth, oscillograph’s bandwidth and sampling rate have been determined. To improve the systemic time ...
2008,
20.
Abstract:
For the research of X-ray spectrum of Z-pinch plasma, a wide variety of X-ray and extreme ultraviolet diagnostics are being developed to study on Yang accelerator. An elliptical curved crystal spectrometer was designed and the spectrograph has 1 350 ...
For the research of X-ray spectrum of Z-pinch plasma, a wide variety of X-ray and extreme ultraviolet diagnostics are being developed to study on Yang accelerator. An elliptical curved crystal spectrometer was designed and the spectrograph has 1 350 ...
2008,
20.
Abstract:
MCP transmissivity is calibrated on the 3B3 medium energy X-ray beamline in BSRF from 2.0~5.5 keV. The experimental result unveils that the transmissivity shrinks steeply from 2.0~3.5 keV, and reaches the bottom from 3.5~4.5 keV,then swells from 4.5~...
MCP transmissivity is calibrated on the 3B3 medium energy X-ray beamline in BSRF from 2.0~5.5 keV. The experimental result unveils that the transmissivity shrinks steeply from 2.0~3.5 keV, and reaches the bottom from 3.5~4.5 keV,then swells from 4.5~...
2008,
20.
Abstract:
Hot dispersion equation is derived and solved of the slow-wave structure(SWS) of the corrugated-inner-conductor backward-wave oscillator(CICBWO), the particle-in-cell(PIC) model is constructed and calculated by PIC code. The results suggest an high f...
Hot dispersion equation is derived and solved of the slow-wave structure(SWS) of the corrugated-inner-conductor backward-wave oscillator(CICBWO), the particle-in-cell(PIC) model is constructed and calculated by PIC code. The results suggest an high f...
2008,
20.
Abstract:
Rogowski coil is used quite widely in measuring pulse current for its simple structure and good response in high frequency. In this paper，principle of using two self-integral Rogowski coils for radial electronic beam current measurement is analysed, ...
Rogowski coil is used quite widely in measuring pulse current for its simple structure and good response in high frequency. In this paper，principle of using two self-integral Rogowski coils for radial electronic beam current measurement is analysed, ...
2008,
20.
Abstract:
Ablative capillary discharge plasma jets are characterized by high density and relatively low temperature. The devices of this kind of plasma jets are of importance to a variety of applications. Two-gap capillary plasma generator(TGCPG) is a realisti...
Ablative capillary discharge plasma jets are characterized by high density and relatively low temperature. The devices of this kind of plasma jets are of importance to a variety of applications. Two-gap capillary plasma generator(TGCPG) is a realisti...
2008,
20.
Abstract:
A capacitance-resistance coupling UV illumination switch under 300 kV breakdown pulse voltage was designed and studied. The UV illumination structure and circuit parameter are important to the design of the switch. The simulation results indicated th...
A capacitance-resistance coupling UV illumination switch under 300 kV breakdown pulse voltage was designed and studied. The UV illumination structure and circuit parameter are important to the design of the switch. The simulation results indicated th...
2008,
20.
Abstract:
The effect of vacuum ultraviolet (VUV) irradiation on the surface morphology, mass loss, thermal properties and optical property of the additional silicone rubber reinforced with MQ resin was studied by space combined radiation simulator. The results...
The effect of vacuum ultraviolet (VUV) irradiation on the surface morphology, mass loss, thermal properties and optical property of the additional silicone rubber reinforced with MQ resin was studied by space combined radiation simulator. The results...
2008,
20.
Abstract:
The TiNbN hard film have been prepared on high-speed steel by arc ion-plating using seperate targets. The prepared film are irradiated by high-intensity pulsed ion beam(HIPIB) of mixing proton and carbon ions at accelerating voltage of 300 kV with pu...
The TiNbN hard film have been prepared on high-speed steel by arc ion-plating using seperate targets. The prepared film are irradiated by high-intensity pulsed ion beam(HIPIB) of mixing proton and carbon ions at accelerating voltage of 300 kV with pu...
2008,
20.
Abstract:
A sliding mode variable structure control method was studied for controlling beam halo-chaos in the periodic focusing channels(PFCs) of high-current ion accelerator. The sliding mode variable structure controller based on Lyapunov function theory was...
A sliding mode variable structure control method was studied for controlling beam halo-chaos in the periodic focusing channels(PFCs) of high-current ion accelerator. The sliding mode variable structure controller based on Lyapunov function theory was...
2008,
20.
Abstract:
A Monte-Carlo simulation was done to study the influence of the internal pellet and carbon foil target to the beam in the CSRm without electron cooling. The results show that the beam loss is mainly due to the growth of beam emittance caused by the s...
A Monte-Carlo simulation was done to study the influence of the internal pellet and carbon foil target to the beam in the CSRm without electron cooling. The results show that the beam loss is mainly due to the growth of beam emittance caused by the s...
2008,
20.
Abstract:
The Kapchinsky-Vladimirsky (K-V) beam through an axisymmetric periodic-focusing magnetic field is studied using the particle-core model. The beam halo-chaos is found, and a real Morlet wavelet function controller is proposed based on the mechanism of...
The Kapchinsky-Vladimirsky (K-V) beam through an axisymmetric periodic-focusing magnetic field is studied using the particle-core model. The beam halo-chaos is found, and a real Morlet wavelet function controller is proposed based on the mechanism of...
2008,
20.
Abstract:
The factors on pulsed vacuum flashover of epoxy composite filled with micro-scale Al2O3·3H2O particles are studied. The effects of coupling agent, dispersion method, curing agent, and surface roughness on the flashover properties are investigated res...
The factors on pulsed vacuum flashover of epoxy composite filled with micro-scale Al2O3·3H2O particles are studied. The effects of coupling agent, dispersion method, curing agent, and surface roughness on the flashover properties are investigated res...
2008,
20.
Abstract:
Target location accuracy is a key index for the microbeam irradiation. Therefore, a method for capturing and locating the microbeam position is offered. The microbeam position is identified by imaging the fluorescent spot excited when particles hit t...
Target location accuracy is a key index for the microbeam irradiation. Therefore, a method for capturing and locating the microbeam position is offered. The microbeam position is identified by imaging the fluorescent spot excited when particles hit t...
2008,
20.
Abstract:
In this paper, simulation with the Monte Carlo method is used to study the slot method and the knife-edge method. Results from different experiment layouts are compared. It is suggested that the high penetrability of X-ray has bad effect on the measu...
In this paper, simulation with the Monte Carlo method is used to study the slot method and the knife-edge method. Results from different experiment layouts are compared. It is suggested that the high penetrability of X-ray has bad effect on the measu...
2008,
20.
Abstract:
A model based on the multilayer lossy transmission line was set up for studying induction accelerator cavity with ferrite cores. Experiments in short pulse exciting in both 5 kV and 220 kV voltages and simulations by PSpice were used to prove the mod...
A model based on the multilayer lossy transmission line was set up for studying induction accelerator cavity with ferrite cores. Experiments in short pulse exciting in both 5 kV and 220 kV voltages and simulations by PSpice were used to prove the mod...
2008,
20.
Abstract:
The cooling design of a 201.25 MHz, 750 keV radio frequency quadrupole injector is described in this paper. The essential parameters for the design of the cooling pipes are obtained from the RF structure design. The hydrodynamics and thermal characte...
The cooling design of a 201.25 MHz, 750 keV radio frequency quadrupole injector is described in this paper. The essential parameters for the design of the cooling pipes are obtained from the RF structure design. The hydrodynamics and thermal characte...
2008,
20.
Abstract:
Pulse bump orbit technique can realize adjustable interval of Hefei light source HLS light pulse. In order to obtain high-current short pulse with high repeat frequency for the fast kicker, the experimental study based on the MOSFET solid modulator t...
Pulse bump orbit technique can realize adjustable interval of Hefei light source HLS light pulse. In order to obtain high-current short pulse with high repeat frequency for the fast kicker, the experimental study based on the MOSFET solid modulator t...
2008,
20.
Abstract:
Based on digital technology, using the up and down converter, IQ modulator and demodulator techniques, the magnitude control, frequency control and feedback phase control are realized and the low level RF system for Shanghai synchrotion radiation fac...
Based on digital technology, using the up and down converter, IQ modulator and demodulator techniques, the magnitude control, frequency control and feedback phase control are realized and the low level RF system for Shanghai synchrotion radiation fac...
2008,
20.
Abstract:
This paper presents the physical design，optimization，structure，fabrication，microwave test results and operation of the 499.654 MHz subharmonic buncher for Shanghai Synchrotron Radiation Facility LINAC. The structure optimization of the 499.654 MHz su...
This paper presents the physical design，optimization，structure，fabrication，microwave test results and operation of the 499.654 MHz subharmonic buncher for Shanghai Synchrotron Radiation Facility LINAC. The structure optimization of the 499.654 MHz su...
