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RSS2011 Vol. 23, No. 09
Recommend Articles
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2011,
23.
Abstract:
An RKA(relativistic klystron amplifier) input cavity with dual coupling holes is analyzed by means of equivalent circuit method, and the scattering matrix (S-matrix) of the coupling system is obtained. Based on the derivative of phase of S21 with res...
An RKA(relativistic klystron amplifier) input cavity with dual coupling holes is analyzed by means of equivalent circuit method, and the scattering matrix (S-matrix) of the coupling system is obtained. Based on the derivative of phase of S21 with res...
2011,
23.
Abstract:
The paper discusses the near field of rectangular aperture antenna under focusing of Gaussian beam by using aperture field method, and obtains the analytic expressions of the near field intensity and gain. Corresponding simulations are conducted unde...
The paper discusses the near field of rectangular aperture antenna under focusing of Gaussian beam by using aperture field method, and obtains the analytic expressions of the near field intensity and gain. Corresponding simulations are conducted unde...
2011,
23.
Abstract:
The high-order mode output of high power millimeter wave gyrotron should be converted due to its disadvantages in space transport, which can be hardly solved by waveguide mode converter. Thus the built-in quasi-optical mode converter is studied. The ...
The high-order mode output of high power millimeter wave gyrotron should be converted due to its disadvantages in space transport, which can be hardly solved by waveguide mode converter. Thus the built-in quasi-optical mode converter is studied. The ...
2011,
23.
Abstract:
A microwave rectifier is an essential part of a microwave power transmission system. In order to maintain high rectifying efficiency at a high input microwave power level, a novel microstrip microwave rectifier based on diode array is presented in th...
A microwave rectifier is an essential part of a microwave power transmission system. In order to maintain high rectifying efficiency at a high input microwave power level, a novel microstrip microwave rectifier based on diode array is presented in th...
2011,
23.
Abstract:
Based on the critical temperature difference of ceramic materials, the critical heat dissipation power of gyrotron windows of different materials has been studied. Different heating modes in the windows caused by electromagnetic wave of different mod...
Based on the critical temperature difference of ceramic materials, the critical heat dissipation power of gyrotron windows of different materials has been studied. Different heating modes in the windows caused by electromagnetic wave of different mod...
2011,
23.
Abstract:
A transient analysis in time domain of beam-wave interaction for gyroklystron is made with self-consistent field theory. A nonlinear theory for gyroklystron with multiple cavities is then established, and corresponding electron motion equations and t...
A transient analysis in time domain of beam-wave interaction for gyroklystron is made with self-consistent field theory. A nonlinear theory for gyroklystron with multiple cavities is then established, and corresponding electron motion equations and t...
2011,
23.
Abstract:
Thermal analysis of Faraday cup analyzer for measuring electron beams of traveling wave tubes(TWTs) using ANSYS package is presented. With beams of different power density and different pulses, temperature of the Faraday cup had been simulated. The r...
Thermal analysis of Faraday cup analyzer for measuring electron beams of traveling wave tubes(TWTs) using ANSYS package is presented. With beams of different power density and different pulses, temperature of the Faraday cup had been simulated. The r...
2011,
23.
Abstract:
The output section used in an S-band high average power klystron with 7.1% bandwidth is investigated. It adopts the two-gap overlapping-mode coupled cavity which uses the short slot coupled mode. The dimension of the coupled slot is obtained by formu...
The output section used in an S-band high average power klystron with 7.1% bandwidth is investigated. It adopts the two-gap overlapping-mode coupled cavity which uses the short slot coupled mode. The dimension of the coupled slot is obtained by formu...
2011,
23.
Abstract:
A theoretical analysis approach for mode stirred reverberation chambers (MSRCs) is presented. Based on the discretized probability model of ideal reverberation chambers, this approach applies Monte Carlo simulation to obtain probabilistic and statist...
A theoretical analysis approach for mode stirred reverberation chambers (MSRCs) is presented. Based on the discretized probability model of ideal reverberation chambers, this approach applies Monte Carlo simulation to obtain probabilistic and statist...
2011,
23.
Abstract:
The paper proposes and studies an experimental scheme that tests microwave gas breakdown by enhancing electric field. The electric field enhancement is realized through two metal pins placed parallel to the field polarization direction in the middle ...
The paper proposes and studies an experimental scheme that tests microwave gas breakdown by enhancing electric field. The electric field enhancement is realized through two metal pins placed parallel to the field polarization direction in the middle ...
2011,
23.
Abstract:
Based on sheath model, high-frequency characteristics including dispersion properties and coupling impedance of rectangular helix structure are derived by using field-matching method combining with integral boundary conditions. The numerical results,...
Based on sheath model, high-frequency characteristics including dispersion properties and coupling impedance of rectangular helix structure are derived by using field-matching method combining with integral boundary conditions. The numerical results,...
2011,
23.
Abstract:
The distributed dielectric loading technology has been successively applied in many gyrotron-travelling wave tube(gyro-TWT) experiments to suppress absolute instabilities. Based on the stability analysis of a Ka-band TE01-mode gyro-TWT with distribut...
The distributed dielectric loading technology has been successively applied in many gyrotron-travelling wave tube(gyro-TWT) experiments to suppress absolute instabilities. Based on the stability analysis of a Ka-band TE01-mode gyro-TWT with distribut...
2011,
23.
Abstract:
A dual-band relativistic backward-wave oscillator(RBWO) with dual annular electron beams generating C-band and X-band microwaves is investigated by particle-in-cell (PIC) simulation. Two separated beam-wave interaction regions are supplied to obtain ...
A dual-band relativistic backward-wave oscillator(RBWO) with dual annular electron beams generating C-band and X-band microwaves is investigated by particle-in-cell (PIC) simulation. Two separated beam-wave interaction regions are supplied to obtain ...
2011,
23.
Abstract:
A laterally graded multilayer was deposited on silicon substrate by using magnetron sputtering. The d-spacing gradient of 0.03 nm/mm was achieved across a 65 mm long range on the substrate’s surface, with d-spacing varying linearly from 8.41 nm to 6....
A laterally graded multilayer was deposited on silicon substrate by using magnetron sputtering. The d-spacing gradient of 0.03 nm/mm was achieved across a 65 mm long range on the substrate’s surface, with d-spacing varying linearly from 8.41 nm to 6....
2011,
23.
Abstract:
A laser-induced damage model has been built for fused silica surface with metal particles as absorbers, which are introduced by processing. The evolution of the temperature field around absorbers during laser irradiation was simulated, and shows that...
A laser-induced damage model has been built for fused silica surface with metal particles as absorbers, which are introduced by processing. The evolution of the temperature field around absorbers during laser irradiation was simulated, and shows that...
2011,
23.
Abstract:
The plastic scintillation detector is used to measure the yield of DD neutrons or DT neutrons. Fast neutrons incident on the scintillator give rise to recoil protons. Because the range of the recoil protons is usually small compared with the dimensio...
The plastic scintillation detector is used to measure the yield of DD neutrons or DT neutrons. Fast neutrons incident on the scintillator give rise to recoil protons. Because the range of the recoil protons is usually small compared with the dimensio...
2011,
23.
Abstract:
The paper discusses the effects of length-to-diameter ratio of cylindrical hohlraum on irradiation nonuniformity of capsule on Shenguang-Ⅲ facility. The parameters of laser spots on hohlraum's inner wall are calculated according to the parameters of ...
The paper discusses the effects of length-to-diameter ratio of cylindrical hohlraum on irradiation nonuniformity of capsule on Shenguang-Ⅲ facility. The parameters of laser spots on hohlraum's inner wall are calculated according to the parameters of ...
2011,
23.
Abstract:
The spatial resolution of KBA X-ray microscope is studied with ray-tracing simulation and experimental test. In the experiment, the imaging object is Au grid, backlit by X-rays produced by the 9th laser interaction with Cu target on Shenguang Ⅱ laser...
The spatial resolution of KBA X-ray microscope is studied with ray-tracing simulation and experimental test. In the experiment, the imaging object is Au grid, backlit by X-rays produced by the 9th laser interaction with Cu target on Shenguang Ⅱ laser...
2011,
23.
Abstract:
The misalignment characteristics of PPLN optical parametric oscillator(OPO) have been experimentally studied. On the basis of PPLN mid-infrared output, the effects of PPLN shift and mirror tilt on misalignment characteristics have been studied in ord...
The misalignment characteristics of PPLN optical parametric oscillator(OPO) have been experimentally studied. On the basis of PPLN mid-infrared output, the effects of PPLN shift and mirror tilt on misalignment characteristics have been studied in ord...
2011,
23.
Abstract:
Based on the wave coupling theory and the evolution model of the critical pump power (or Brillouin threshold) for stimulated Brillouin scattering(SBS) in double-clad fiber amplifiers, the influence of signal bandwidth, fiber-core diameter and amplifi...
Based on the wave coupling theory and the evolution model of the critical pump power (or Brillouin threshold) for stimulated Brillouin scattering(SBS) in double-clad fiber amplifiers, the influence of signal bandwidth, fiber-core diameter and amplifi...
2011,
23.
Abstract:
Mo films were fabricated at different sputtering powers by DC magnetron sputtering. The deposition rate, surface topography and crystal structure of Mo films were studied. The effects of sputtering power on grain size and stress of Mo films were disc...
Mo films were fabricated at different sputtering powers by DC magnetron sputtering. The deposition rate, surface topography and crystal structure of Mo films were studied. The effects of sputtering power on grain size and stress of Mo films were disc...
2011,
23.
Abstract:
Thermal annealing at high temperature is used to relieve the residual stress of fused silica induced by CO2 laser repair. The effects of annealing environment on surface contamination of fused silica as well as the effects of different annealing temp...
Thermal annealing at high temperature is used to relieve the residual stress of fused silica induced by CO2 laser repair. The effects of annealing environment on surface contamination of fused silica as well as the effects of different annealing temp...
2011,
23.
Abstract:
In order to achieve three-step pulse shaping (time proportion 1.5 ns∶1.0 ns∶0.5 ns, power proportion 1∶4∶16, total energy 500 J) required by the physical experiments on Shenguang-Ⅲ technical integration experimental line(TIL), some researches on wave...
In order to achieve three-step pulse shaping (time proportion 1.5 ns∶1.0 ns∶0.5 ns, power proportion 1∶4∶16, total energy 500 J) required by the physical experiments on Shenguang-Ⅲ technical integration experimental line(TIL), some researches on wave...
2011,
23.
Abstract:
A single-shot transient-grating frequency-resolved optical gating(TG-FROG) device was set up to measure UV ultrashort pulse laser with pulse duration within 10 ps. The performance of the device was demonstrated by experimental data measured on discha...
A single-shot transient-grating frequency-resolved optical gating(TG-FROG) device was set up to measure UV ultrashort pulse laser with pulse duration within 10 ps. The performance of the device was demonstrated by experimental data measured on discha...
2011,
23.
Abstract:
The magnetic field around a wire-array load of Z-pinch is essential to understand the wire-array ablation and ablated plasma flowing, as well as the following implosion processes. All the currents of the wire-array, return-posts, anode and cathode we...
The magnetic field around a wire-array load of Z-pinch is essential to understand the wire-array ablation and ablated plasma flowing, as well as the following implosion processes. All the currents of the wire-array, return-posts, anode and cathode we...
2011,
23.
Abstract:
In hydrodynamics instability experiment, the quantificational relation between amplitude fluctuation of sample and X-ray intensity is important to analysing Rayleigh-Taylor instability exactly. The signal-to-noise of the data is always low due to the...
In hydrodynamics instability experiment, the quantificational relation between amplitude fluctuation of sample and X-ray intensity is important to analysing Rayleigh-Taylor instability exactly. The signal-to-noise of the data is always low due to the...
2011,
23.
Abstract:
A novel electro-optically Q-switched laser with short cavity was demonstrated. Its optimal structure parameters were determined via the analysis of factors related to output pulse width. Quasi-continuous end-pumped Nd:YVO4 crystal with concentration ...
A novel electro-optically Q-switched laser with short cavity was demonstrated. Its optimal structure parameters were determined via the analysis of factors related to output pulse width. Quasi-continuous end-pumped Nd:YVO4 crystal with concentration ...
2011,
23.
Abstract:
The paper reports the research progress in all-solid-state high power green laser. The intracavity frequency-doubled green laser adopts the two-rod L-shaped cavity. When the pumping power is 1 174 W, the 532 nm output power is 186 W and the optical-o...
The paper reports the research progress in all-solid-state high power green laser. The intracavity frequency-doubled green laser adopts the two-rod L-shaped cavity. When the pumping power is 1 174 W, the 532 nm output power is 186 W and the optical-o...
2011,
23.
Abstract:
To suppress the influences aroused by CCD noise in measuring laser near field distribution, the paper proposes a method to correct CCD noise using a priori knowledge of CCD noise and its observed value based on contrast test model. Compared with the ...
To suppress the influences aroused by CCD noise in measuring laser near field distribution, the paper proposes a method to correct CCD noise using a priori knowledge of CCD noise and its observed value based on contrast test model. Compared with the ...
2011,
23.
Abstract:
Aiming at the shortcomings of laser point-to-point communication, the assumption of constructing communication networks by laser diffusion from sea surface was come up with, and the characteristics of the scattered field of laser from perfect conduct...
Aiming at the shortcomings of laser point-to-point communication, the assumption of constructing communication networks by laser diffusion from sea surface was come up with, and the characteristics of the scattered field of laser from perfect conduct...
2011,
23.
Abstract:
Using water as coolant, a closed loop spray cooling system with a builtin condenser is established and the variation of startup time is measured dynamically. The optimized startup sequence for different modules is condenser, pump and heater. Under t...
Using water as coolant, a closed loop spray cooling system with a builtin condenser is established and the variation of startup time is measured dynamically. The optimized startup sequence for different modules is condenser, pump and heater. Under t...
2011,
23.
Abstract:
Laser thrusters with single nozzle of parabolic or conic profile fail to constrict the high-pressured flow efficiently, resulting in poor propulsion performance. Under air-breathing mode and different single-pulse laser energy, the laser thruster wit...
Laser thrusters with single nozzle of parabolic or conic profile fail to constrict the high-pressured flow efficiently, resulting in poor propulsion performance. Under air-breathing mode and different single-pulse laser energy, the laser thruster wit...
2011,
23.
Abstract:
The spectrum of a series of low concentration carbon monoxide and mixed gas (carbon monoxide, methane and nitrogen) was obtained around 2.33 μm using a tunable distributed feedback semiconductor laser with an astigmatic mirror multi-pass absorption c...
The spectrum of a series of low concentration carbon monoxide and mixed gas (carbon monoxide, methane and nitrogen) was obtained around 2.33 μm using a tunable distributed feedback semiconductor laser with an astigmatic mirror multi-pass absorption c...
2011,
23.
Abstract:
Based on the analysis of the working principle of automatic gain control (AGC) circuit, the mechanism of laser jamming on AGC circuit is discussed, and the experiment of laser jamming on the AGC circuit of an infrared thermal imaging device is carrie...
Based on the analysis of the working principle of automatic gain control (AGC) circuit, the mechanism of laser jamming on AGC circuit is discussed, and the experiment of laser jamming on the AGC circuit of an infrared thermal imaging device is carrie...
2011,
23.
Abstract:
According to the definition of fluorescence lifetime and the gain equation of optical parametric amplification, optical parametric fluorescence lifetime(OPFL) distribution characteristics are studied in a novel nonlinear crystal BaAlBO3F2 under three...
According to the definition of fluorescence lifetime and the gain equation of optical parametric amplification, optical parametric fluorescence lifetime(OPFL) distribution characteristics are studied in a novel nonlinear crystal BaAlBO3F2 under three...
2011,
23.
Abstract:
An ultralow-repetition-rate, all-normal-dispersion fiber laser is proposed which is passively mode-locked by an SESAM (semiconductor saturable absorber mirror) with ultra long cavity length and high concentration single mode ytterbium-doped fiber. Th...
An ultralow-repetition-rate, all-normal-dispersion fiber laser is proposed which is passively mode-locked by an SESAM (semiconductor saturable absorber mirror) with ultra long cavity length and high concentration single mode ytterbium-doped fiber. Th...
2011,
23.
Abstract:
A quantity of atmospheric moderate resolution radiation results at Chaohu Lake basin(water site and vegetation site) in summer are obtained, including transmittance along observation path, atmospheric radiance, atmospheric profiles, etc., using MODIS...
A quantity of atmospheric moderate resolution radiation results at Chaohu Lake basin(water site and vegetation site) in summer are obtained, including transmittance along observation path, atmospheric radiance, atmospheric profiles, etc., using MODIS...
2011,
23.
Abstract:
Radiation forces and trapping stability of focused flat-topped beam and flat-topped vortex beam on metallic (i.e. gold) Rayleigh particle are analyzed, where the dependence of radiation forces on topological charge and beam order are stressed and ill...
Radiation forces and trapping stability of focused flat-topped beam and flat-topped vortex beam on metallic (i.e. gold) Rayleigh particle are analyzed, where the dependence of radiation forces on topological charge and beam order are stressed and ill...
2011,
23.
Abstract:
The low threshold of compression gratings determines the maximum output energy of high-energy PW laser systems. For the compressor in the Xingguang-Ⅲ facility which is under development, this paper designed a 2-D photonic-crystal grating of fused sil...
The low threshold of compression gratings determines the maximum output energy of high-energy PW laser systems. For the compressor in the Xingguang-Ⅲ facility which is under development, this paper designed a 2-D photonic-crystal grating of fused sil...
2011,
23.
Abstract:
To avoid the smile effect, which seriously restricts the linewidth narrowing of high power diode laser for alkali vapor laser, a 780 nm single-broad-area high power diode laser was studied. An output beam with 11.5 W power, 61% external cavity effici...
To avoid the smile effect, which seriously restricts the linewidth narrowing of high power diode laser for alkali vapor laser, a 780 nm single-broad-area high power diode laser was studied. An output beam with 11.5 W power, 61% external cavity effici...
2011,
23.
Abstract:
An arbitrary length nozzle design method(ALN method) is applied to the nozzle design of a gasdynamic laser. For comparison, four ALN nozzles and one MLN nozzle (designed by minimum length nozzle design method) are designed with the same Mach number o...
An arbitrary length nozzle design method(ALN method) is applied to the nozzle design of a gasdynamic laser. For comparison, four ALN nozzles and one MLN nozzle (designed by minimum length nozzle design method) are designed with the same Mach number o...
2011,
23.
Abstract:
In order to meet the requirement of high-energy laser output from a vacuum resonator to atmosphere and reduce the effect of windows thermal deformation on laser beam performance, the paper introduces a technical solution which can reduce laser irradi...
In order to meet the requirement of high-energy laser output from a vacuum resonator to atmosphere and reduce the effect of windows thermal deformation on laser beam performance, the paper introduces a technical solution which can reduce laser irradi...
2011,
23.
Abstract:
Based on the research results at home and abroad, this paper provides a brief summarization and comments on the heat transfer characteristics, mechanisms, strengthening way and affecting parameters of spray cooling. Some theoretical models for critic...
Based on the research results at home and abroad, this paper provides a brief summarization and comments on the heat transfer characteristics, mechanisms, strengthening way and affecting parameters of spray cooling. Some theoretical models for critic...
2011,
23.
Abstract:
Based on the mechanism of quasi-stationary wave (QSW) formed by optical pulsed discharge (OPD), which is generated by high frequency pulsed laser, a self-compiled computational fluid dynamics program is validated. The results indicate that this progr...
Based on the mechanism of quasi-stationary wave (QSW) formed by optical pulsed discharge (OPD), which is generated by high frequency pulsed laser, a self-compiled computational fluid dynamics program is validated. The results indicate that this progr...
2011,
23.
Abstract:
For it is hard to remove clutters, especially the clutter edge, with conventional high-pass filters in spatial or temporal domain, a dim moving target detection method based on the time-frequency characters of target, noise and clutter is presented. ...
For it is hard to remove clutters, especially the clutter edge, with conventional high-pass filters in spatial or temporal domain, a dim moving target detection method based on the time-frequency characters of target, noise and clutter is presented. ...
2011,
23.
Abstract:
By incorporating a commercial diode-laser-bar into a volume Bragg grating(VBG) based external cavity, we obtained 80 W CW output power with 0.1 nm linewidth centered at 780.2 nm. To reduce the thermal effect, a chopper was used to convert the CW pump...
By incorporating a commercial diode-laser-bar into a volume Bragg grating(VBG) based external cavity, we obtained 80 W CW output power with 0.1 nm linewidth centered at 780.2 nm. To reduce the thermal effect, a chopper was used to convert the CW pump...
2011,
23.
Abstract:
An X-ray backlight imaging system using spherically bent crystal has been set up based on the X-ray Bragg diffraction theory. The primary component of the system is a spherically bent α-quartz crystal whose curvature radius is 143 mm. The monochromat...
An X-ray backlight imaging system using spherically bent crystal has been set up based on the X-ray Bragg diffraction theory. The primary component of the system is a spherically bent α-quartz crystal whose curvature radius is 143 mm. The monochromat...
2011,
23.
Abstract:
A technical scheme of super-cavity with two parabolic mirrors is presented. The total photon density at the collision point of parabolic super-cavity is computed. By using the Compton scattering theory, the high brightness laser synchrotron source ba...
A technical scheme of super-cavity with two parabolic mirrors is presented. The total photon density at the collision point of parabolic super-cavity is computed. By using the Compton scattering theory, the high brightness laser synchrotron source ba...
2011,
23.
Abstract:
To realize high-sensitive and rapid analysis of trace cadmium in water, an unpolluted thin wood slice was chosen as substrate to absorb water sample and then analyzed with laser-induced breakdown spectroscopy(LIBS) after being dried, which overcomes ...
To realize high-sensitive and rapid analysis of trace cadmium in water, an unpolluted thin wood slice was chosen as substrate to absorb water sample and then analyzed with laser-induced breakdown spectroscopy(LIBS) after being dried, which overcomes ...
2011,
23.
Abstract:
The parameters of laser have impact on the process of producing quasimonoenergetic proton beams which use a high power laser interacting with plasmas. The duration of the laser is an important parameter of them. A one dimension particle-in cell code ...
The parameters of laser have impact on the process of producing quasimonoenergetic proton beams which use a high power laser interacting with plasmas. The duration of the laser is an important parameter of them. A one dimension particle-in cell code ...
2011,
23.
Abstract:
Parameters of the laser-induced aluminum alloy E414d plasma are studied. The Local Thermodynamic Equilibrium (LTE) is proved valid for the electron number density (1.9×1018 cm-3), inferred from the Lorentz fit of Mg (Ⅰ) 285.21 nm, is lager than the l...
Parameters of the laser-induced aluminum alloy E414d plasma are studied. The Local Thermodynamic Equilibrium (LTE) is proved valid for the electron number density (1.9×1018 cm-3), inferred from the Lorentz fit of Mg (Ⅰ) 285.21 nm, is lager than the l...
2011,
23.
Abstract:
Much attention has been paid to seeking efficient methods for the controlled release of nuclear energy in appropriate isomer systems, which is an interdisciplinary subject. Utilizing atomic processes for releasing is a relatively feasible scheme, whe...
Much attention has been paid to seeking efficient methods for the controlled release of nuclear energy in appropriate isomer systems, which is an interdisciplinary subject. Utilizing atomic processes for releasing is a relatively feasible scheme, whe...
2011,
23.
Abstract:
By introducing photonic crystal (or PBG) structure to the traditional disk-loaded accelerating tube, wakefields in the accelerating structure can be effectively damped. Machining methods of a 2D metallic PBG cavity were investigated and X-band PBG ca...
By introducing photonic crystal (or PBG) structure to the traditional disk-loaded accelerating tube, wakefields in the accelerating structure can be effectively damped. Machining methods of a 2D metallic PBG cavity were investigated and X-band PBG ca...
2011,
23.
Abstract:
A reconstruction algorithm is proposed for flash radiographic image with low signal-to-noise ratio. The algorithm is based on Bayesian principle, and uses smoothness constraint to handle the blurring effects caused by the X-ray source of radiography ...
A reconstruction algorithm is proposed for flash radiographic image with low signal-to-noise ratio. The algorithm is based on Bayesian principle, and uses smoothness constraint to handle the blurring effects caused by the X-ray source of radiography ...
2011,
23.
Abstract:
The vertical beam size of BEPCⅡstorage ring was measured by using visible synchrotron light spatial interference method, and the measured size is 155 μm. The measurement results fit well with the calculation predication. This method can avoid the mea...
The vertical beam size of BEPCⅡstorage ring was measured by using visible synchrotron light spatial interference method, and the measured size is 155 μm. The measurement results fit well with the calculation predication. This method can avoid the mea...
2011,
23.
Abstract:
An embedded synchronization system based on FPGA for high energy industry CT is introduced. FPGA is the main unit of the system, including UART, decoding module, LCD module, reading/writing EEPROM module, synchronization timing module, and so on. Dec...
An embedded synchronization system based on FPGA for high energy industry CT is introduced. FPGA is the main unit of the system, including UART, decoding module, LCD module, reading/writing EEPROM module, synchronization timing module, and so on. Dec...
2011,
23.
Abstract:
A Penning-type negative hydrogen ion source was diagnosed by emission spectrometry, and the source arc power was measured under different conditions in the meantime. The ion source was designed to offer negative hydrogen to a small medical cyclotron....
A Penning-type negative hydrogen ion source was diagnosed by emission spectrometry, and the source arc power was measured under different conditions in the meantime. The ion source was designed to offer negative hydrogen to a small medical cyclotron....
2011,
23.
Abstract:
Due to the limited number of views in high-energy X-ray radiography, the density reconstruction for asymmetric objects from a single radiograph is studied. The approach proposed can make explicit use of model-based information concerning the symmetri...
Due to the limited number of views in high-energy X-ray radiography, the density reconstruction for asymmetric objects from a single radiograph is studied. The approach proposed can make explicit use of model-based information concerning the symmetri...
2011,
23.
Abstract:
A magnetically-insulated transmission line(MITL) with inductive spring is designed according to PSpice calculation to study the energy transmission influence of the spring. A system for its calibration and diagnosis is then designed. In one shot, whe...
A magnetically-insulated transmission line(MITL) with inductive spring is designed according to PSpice calculation to study the energy transmission influence of the spring. A system for its calibration and diagnosis is then designed. In one shot, whe...
2011,
23.
Abstract:
Based on the current element model for magnetic ring, the magnetic field distribution along central axis was analyzed for permanent magnetic ring. Theoretical calculation and measured results show that the whole magnetic ring only exhibits an axial m...
Based on the current element model for magnetic ring, the magnetic field distribution along central axis was analyzed for permanent magnetic ring. Theoretical calculation and measured results show that the whole magnetic ring only exhibits an axial m...
2011,
23.
Abstract:
The flashover probability of vacuum insulator stack (VIS) is calculated based on statistical model. The calculation results show that the probability reduces with lower peak voltage of VIS, shorter effective pulse duration, smaller material constant ...
The flashover probability of vacuum insulator stack (VIS) is calculated based on statistical model. The calculation results show that the probability reduces with lower peak voltage of VIS, shorter effective pulse duration, smaller material constant ...
2011,
23.
Abstract:
A new method of piezoelectric detection is presented for diagnosing ignition thresholds of LSCW and LSDW by measuring strain and stress, which generated on surface of target due to interaction between Nd:YAG laser operating at 1 064 nm and aluminum t...
A new method of piezoelectric detection is presented for diagnosing ignition thresholds of LSCW and LSDW by measuring strain and stress, which generated on surface of target due to interaction between Nd:YAG laser operating at 1 064 nm and aluminum t...
