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RSS2013 Vol. 25, No. 10
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2013,
25: 2477-2478.
doi: 10.3788/HPLPB20132510.2477
Abstract:
An all-fiber Tm-doped pulse laser with active mode-locking is demonstrated, the center wavelength is 1.95 m. The phase in the laser cavity was modulated by an electronic optical phase modulator, and an actively mode-locked pulse output with a repetit...
An all-fiber Tm-doped pulse laser with active mode-locking is demonstrated, the center wavelength is 1.95 m. The phase in the laser cavity was modulated by an electronic optical phase modulator, and an actively mode-locked pulse output with a repetit...
2013,
25: 2479-2486.
doi: 10.3788/HPLPB20132510.2479
Abstract:
The vibrating wire technique is used as an alignment method which carries out magnets alignment by measuring the magnetic field of the magnets. It is different from the alignment method based on the mechanical structure of the components. The vibrati...
The vibrating wire technique is used as an alignment method which carries out magnets alignment by measuring the magnetic field of the magnets. It is different from the alignment method based on the mechanical structure of the components. The vibrati...
2013,
25: 2487-2495.
doi: 10.3788/HPLPB20132510.2487
Abstract:
The basic characteristic of the pulsed power science and technology, which is widely applied to X-ray radiography, inertial confinement fusion and high energy density physics, is energy compressing, both temporally and spatially, to obtain high power...
The basic characteristic of the pulsed power science and technology, which is widely applied to X-ray radiography, inertial confinement fusion and high energy density physics, is energy compressing, both temporally and spatially, to obtain high power...
2013,
25: 2496-2500.
doi: 10.3788/HPLPB20132510.2496
Abstract:
The effects of refractive index and fiber core structure on energy distribution were studied by setting up laser transmission model in single mode fiber with Comsol and Matlab. First, the relationship between the fiber core, numerical aperture, norma...
The effects of refractive index and fiber core structure on energy distribution were studied by setting up laser transmission model in single mode fiber with Comsol and Matlab. First, the relationship between the fiber core, numerical aperture, norma...
2013,
25: 2501-2504.
doi: 10.3788/HPLPB20132510.2501
Abstract:
The conservation equations describing the movement of the plasma in the laser-supported detonation process are numerically calculated with the space-time conservation element and solution element method. The distributions of the pressure, the density...
The conservation equations describing the movement of the plasma in the laser-supported detonation process are numerically calculated with the space-time conservation element and solution element method. The distributions of the pressure, the density...
2013,
25: 2505-2510.
doi: 10.3788/HPLPB20132510.2505
Abstract:
The high frequency phase of near-field distorted wavefront is recovered using the successive iteration method. The variation of the recovery effect with the filter cutoff frequency is quantitatively analyzed. The influences of the noise disturbance o...
The high frequency phase of near-field distorted wavefront is recovered using the successive iteration method. The variation of the recovery effect with the filter cutoff frequency is quantitatively analyzed. The influences of the noise disturbance o...
2013,
25: 2511-2516.
doi: 10.3788/HPLPB20132510.2511
Abstract:
A new kind of optical lens with light weight, compact structure, good image quality, all-weather work, scurviness environment is designed based on the triturating requirement of the space camera for debris. The lens breaks through the flaw that the c...
A new kind of optical lens with light weight, compact structure, good image quality, all-weather work, scurviness environment is designed based on the triturating requirement of the space camera for debris. The lens breaks through the flaw that the c...
2013,
25: 2517-2520.
doi: 10.3788/HPLPB20132510.2517
Abstract:
We designed the structure of tunnel junction series stacked semiconductor lasers and grew the laser materials by molecular beam epitaxy (MBE). We fabricated the 200 m wide, 800 m cavity length laser diode chips by the process of photo-lithography, et...
We designed the structure of tunnel junction series stacked semiconductor lasers and grew the laser materials by molecular beam epitaxy (MBE). We fabricated the 200 m wide, 800 m cavity length laser diode chips by the process of photo-lithography, et...
2013,
25: 2521-2526.
doi: 10.3788/HPLPB20132510.2521
Abstract:
The principle of stochastic parallel gradient descent (SPGD) algorithm is introduced, and the algorithm flow is verified through simulation. Two critical factors, the stochastic perturbation and the gain coefficient, are especially analyzed. The simu...
The principle of stochastic parallel gradient descent (SPGD) algorithm is introduced, and the algorithm flow is verified through simulation. Two critical factors, the stochastic perturbation and the gain coefficient, are especially analyzed. The simu...
2013,
25: 2527-2530.
doi: 10.3788/HPLPB20132510.2527
Abstract:
The theory about stochastic parallel gradient descent(SPGD) algorithm and the use of SPGD algorithm for coherent beam combination are introduced. For solving the difficulty for adjusting the key parameters in SPGD algorithm, a new method of combining...
The theory about stochastic parallel gradient descent(SPGD) algorithm and the use of SPGD algorithm for coherent beam combination are introduced. For solving the difficulty for adjusting the key parameters in SPGD algorithm, a new method of combining...
2013,
25: 2531-2535.
doi: 10.3788/HPLPB20132510.2531
Abstract:
The rear surface defects and impurities of fused silica can absorb the laser irradiation energy strongly, resulting in the high temperature difference and thermal stress. When the thermal stress reaches the tensile strength limit, a brittle rupture w...
The rear surface defects and impurities of fused silica can absorb the laser irradiation energy strongly, resulting in the high temperature difference and thermal stress. When the thermal stress reaches the tensile strength limit, a brittle rupture w...
2013,
25: 2536-2540.
doi: 10.3788/HPLPB20132510.2536
Abstract:
There has been lacking of general simulation tools for complicated laser system in China for a long time. In order to solve this problem, we have built the component-based laser system simulation software called EasyLaser, which is based on the credi...
There has been lacking of general simulation tools for complicated laser system in China for a long time. In order to solve this problem, we have built the component-based laser system simulation software called EasyLaser, which is based on the credi...
2013,
25: 2541-2545.
doi: 10.3788/HPLPB20132510.2541
Abstract:
A energy balance method of preamplifier system (PSA) is given based on the PSA in SG-Ⅲ facility. The preamplifier system has realized precise control of output energy by employing the method. The results of running of the facility show that the contr...
A energy balance method of preamplifier system (PSA) is given based on the PSA in SG-Ⅲ facility. The preamplifier system has realized precise control of output energy by employing the method. The results of running of the facility show that the contr...
2013,
25: 2546-2550.
doi: 10.3788/HPLPB20132510.2546
Abstract:
In order to meet the cooling requirements of high-power laser devices, the influences of spray chamber pressure and nozzle bore diameter on the spray cooling performance were experimentally studied in a closed spray cooling system with R22 as refrige...
In order to meet the cooling requirements of high-power laser devices, the influences of spray chamber pressure and nozzle bore diameter on the spray cooling performance were experimentally studied in a closed spray cooling system with R22 as refrige...
2013,
25: 2551-2555.
doi: 10.3788/HPLPB20132510.2551
Abstract:
For heat dissipation of the high power solid state laser (HPSSL), a spray cooling system based on refrigerant cycle was designed, and its heat transfer performance was studied. Because the compressor in the refrigerant system needs lubricating, it is...
For heat dissipation of the high power solid state laser (HPSSL), a spray cooling system based on refrigerant cycle was designed, and its heat transfer performance was studied. Because the compressor in the refrigerant system needs lubricating, it is...
2013,
25: 2556-2560.
doi: 10.3788/HPLPB20132510.2556
Abstract:
In order to achieve high-homogeneity pumping source of semiconductor laser, the influence of microlens changes in the imaging beam integrator on the homogeneity of pumping light is researched. The relation between microlens numerical aperture and the...
In order to achieve high-homogeneity pumping source of semiconductor laser, the influence of microlens changes in the imaging beam integrator on the homogeneity of pumping light is researched. The relation between microlens numerical aperture and the...
2013,
25: 2561-2564.
doi: 10.3788/HPLPB20132510.2561
Abstract:
Many light emitting elements were periodically arranged in a high power diode laser array. Based on Talbot effect, the traditional Littrow external cavity narrow-linewidth system was improved. A Talbot external cavity was established by inserting a f...
Many light emitting elements were periodically arranged in a high power diode laser array. Based on Talbot effect, the traditional Littrow external cavity narrow-linewidth system was improved. A Talbot external cavity was established by inserting a f...
2013,
25: 2565-2570.
doi: 10.3788/HPLPB20132510.2565
Abstract:
A new cylindrical-lens spatial filter is proposed to solve the blocking pinhole problem of a spatial filter. Compared with the conventional spherical-lens spatial filter, the new filter is constituted with cylindrical lens and slit. The transmission ...
A new cylindrical-lens spatial filter is proposed to solve the blocking pinhole problem of a spatial filter. Compared with the conventional spherical-lens spatial filter, the new filter is constituted with cylindrical lens and slit. The transmission ...
2013,
25: 2571-2576.
doi: 10.3788/HPLPB20132510.2571
Abstract:
Based on the methods of vector angular spectrum and stationary phase, the analytical expressions of the TE and TM terms and the energy flux distributions of hollow Gaussian vortex beams in the far field are derived and used to analyze the phase singu...
Based on the methods of vector angular spectrum and stationary phase, the analytical expressions of the TE and TM terms and the energy flux distributions of hollow Gaussian vortex beams in the far field are derived and used to analyze the phase singu...
2013,
25: 2577-2581.
doi: 10.3788/HPLPB20132510.2577
Abstract:
The supercontinuum generation attracts more and more interest in nonlinear optical fields. The propagation of 30 fs pulse with different power and polarization state in the birefringent microstructure fibers for supercontinuum generation is studied e...
The supercontinuum generation attracts more and more interest in nonlinear optical fields. The propagation of 30 fs pulse with different power and polarization state in the birefringent microstructure fibers for supercontinuum generation is studied e...
2013,
25: 2582-2586.
doi: 10.3788/HPLPB20132510.2582
Abstract:
The influence of automatic brightness control on the adaptation of low-light-level TV to high light is quantitatively analyzed. First, combined with signal response characteristics, the relationship between the high light energy and the system imagin...
The influence of automatic brightness control on the adaptation of low-light-level TV to high light is quantitatively analyzed. First, combined with signal response characteristics, the relationship between the high light energy and the system imagin...
2013,
25: 2587-2591.
doi: 10.3788/HPLPB20132510.2587
Abstract:
The femtosecond laser ablation results of PMP foam (density of 90 mg/cm3) were analyzed. The laser pulses used for the study were 800 nm in wavelength, 50 fs in pulse duration and the repetition rate was 1000 Hz. The ablation threshold of the foam wa...
The femtosecond laser ablation results of PMP foam (density of 90 mg/cm3) were analyzed. The laser pulses used for the study were 800 nm in wavelength, 50 fs in pulse duration and the repetition rate was 1000 Hz. The ablation threshold of the foam wa...
2013,
25: 2592-2598.
doi: 10.3788/HPLPB20132510.2592
Abstract:
The influences of water vapor concentration on discharge mechanisms and discharge efficiency of atmosphere pressure plasma jet (APPJ) are studied to generate highly active cold plasma and optimize its efficiency. The discharge characteristics of APPJ...
The influences of water vapor concentration on discharge mechanisms and discharge efficiency of atmosphere pressure plasma jet (APPJ) are studied to generate highly active cold plasma and optimize its efficiency. The discharge characteristics of APPJ...
2013,
25: 2599-2603.
doi: 10.3788/HPLPB20132510.2599
Abstract:
To closely achieve diffraction-limited resolution, the surface shape of extreme ultraviolet (EUV) Schwarzschild objective requires about 1 nm (RMS value). But the mounting stress generated during the assembling process will affect the surface shape o...
To closely achieve diffraction-limited resolution, the surface shape of extreme ultraviolet (EUV) Schwarzschild objective requires about 1 nm (RMS value). But the mounting stress generated during the assembling process will affect the surface shape o...
2013,
25: 2604-2610.
doi: 10.3788/HPLPB20132510.2604
Abstract:
The aperture for neutron penumbral imaging is newly designed in order to reduce the difficulties of fabrication and detecting. Firstly, the source-detector and source-aperture distances are fixed on because of the neutron yield of Shenguang-Ⅲ facilit...
The aperture for neutron penumbral imaging is newly designed in order to reduce the difficulties of fabrication and detecting. Firstly, the source-detector and source-aperture distances are fixed on because of the neutron yield of Shenguang-Ⅲ facilit...
2013,
25: 2611-2615.
doi: 10.3788/HPLPB20132510.2611
Abstract:
A novel hard X-ray bent crystal spectrometer, composed of a cylindrically bent crystal, a specula CsI(Tl) scintillator, an image intensifier and a CCD, were proposed, which had the quantitative measurement ability. The details of a quantitative calib...
A novel hard X-ray bent crystal spectrometer, composed of a cylindrically bent crystal, a specula CsI(Tl) scintillator, an image intensifier and a CCD, were proposed, which had the quantitative measurement ability. The details of a quantitative calib...
2013,
25: 2616-2620.
doi: 10.3788/HPLPB20132510.2616
Abstract:
With the development of the ICF experiment, a streak camera with a wider dynamic range is required. A double focusing lens streak tube with wide dynamic range is designed to satisfy this requirement. Technical parameters of the tube are obtained by o...
With the development of the ICF experiment, a streak camera with a wider dynamic range is required. A double focusing lens streak tube with wide dynamic range is designed to satisfy this requirement. Technical parameters of the tube are obtained by o...
2013,
25: 2621-2626.
doi: 10.3788/HPLPB20132510.2621
Abstract:
Activated N-doped carbon aerogel (N-ACA) is synthesized by the sol-gel polycondensation of resorcinol with formaldehyde using the melamine as nitrogen source, and then the carbon derivative being activated in CO2 flow. The surface morphology and poro...
Activated N-doped carbon aerogel (N-ACA) is synthesized by the sol-gel polycondensation of resorcinol with formaldehyde using the melamine as nitrogen source, and then the carbon derivative being activated in CO2 flow. The surface morphology and poro...
2013,
25: 2627-2630.
doi: 10.3788/HPLPB20132510.2627
Abstract:
The DC magnetron sputtering was explored to fabricate Au thin films with thicknesses of 5, 10, 15, 20 nm on the silica substrates. These films were annealed in high purity nitrogen ambient at 800℃ and Au particles of different diameters were obtained...
The DC magnetron sputtering was explored to fabricate Au thin films with thicknesses of 5, 10, 15, 20 nm on the silica substrates. These films were annealed in high purity nitrogen ambient at 800℃ and Au particles of different diameters were obtained...
2013,
25: 2631-2635.
doi: 10.3788/HPLPB20132510.2631
Abstract:
The plasma size has important influence on the power of the extreme ultraviolet source at the intermediate focus (IF point) and the design of the illumination system for a capillary discharge extreme ultraviolet source. The collection efficiency was ...
The plasma size has important influence on the power of the extreme ultraviolet source at the intermediate focus (IF point) and the design of the illumination system for a capillary discharge extreme ultraviolet source. The collection efficiency was ...
2013,
25: 2636-2642.
doi: 10.3788/HPLPB20132510.2636
Abstract:
The relativistic magnetron is a crossed-field device and plays an important role in the high power microwave technology and radar system. Recently, researchers realized mode switching in relativistic magnetron between neighbour modes as well as diffe...
The relativistic magnetron is a crossed-field device and plays an important role in the high power microwave technology and radar system. Recently, researchers realized mode switching in relativistic magnetron between neighbour modes as well as diffe...
2013,
25: 2643-2647.
doi: 10.3788/HPLPB20132510.2643
Abstract:
The finite-difference method is used to analyze the dispersion characteristics of two-dimensional photonic band gap (PBG) structures formed by triangular arrays of metal posts. The global band gaps for TE modes are derived. The method of designing PB...
The finite-difference method is used to analyze the dispersion characteristics of two-dimensional photonic band gap (PBG) structures formed by triangular arrays of metal posts. The global band gaps for TE modes are derived. The method of designing PB...
2013,
25: 2648-2652.
doi: 10.3788/HPLPB20132510.2648
Abstract:
A design of waveguide slot-array antenna for high power applications is introduced. The slots are on the narrow side of waveguide. By achieving uniform radiation of each slot, it is possible to expand the array; besides, it is possible to realize bea...
A design of waveguide slot-array antenna for high power applications is introduced. The slots are on the narrow side of waveguide. By achieving uniform radiation of each slot, it is possible to expand the array; besides, it is possible to realize bea...
2013,
25: 2653-2658.
doi: 10.3788/HPLPB20132510.2653
Abstract:
Using a 1D3V PIC code programmed by authors, the physical course of multipactor discharge suppressing on dielectric surface with different external magnetic field patterns is studied numerically. The secondary electron number, average electron energy...
Using a 1D3V PIC code programmed by authors, the physical course of multipactor discharge suppressing on dielectric surface with different external magnetic field patterns is studied numerically. The secondary electron number, average electron energy...
2013,
25: 2659-2662.
doi: 10.3788/HPLPB20132510.2659
Abstract:
A novel coaxial directional coupler was designed for L-band high power microwave radiation field measurement. It could incredibly decrease the size of the coupler to use two different kinds of transmission lines and coupling aperture with continuous ...
A novel coaxial directional coupler was designed for L-band high power microwave radiation field measurement. It could incredibly decrease the size of the coupler to use two different kinds of transmission lines and coupling aperture with continuous ...
2013,
25: 2663-2666.
doi: 10.3788/HPLPB20132510.2663
Abstract:
This paper presents a quasi-optical mode converter which can convert the output mode of gyrotrons and other high-power microwave oscillators into quasi-Gaussian beam, aiming to achieve transverse output of quasi-Gaussian beam TEM00 mode. First, we an...
This paper presents a quasi-optical mode converter which can convert the output mode of gyrotrons and other high-power microwave oscillators into quasi-Gaussian beam, aiming to achieve transverse output of quasi-Gaussian beam TEM00 mode. First, we an...
2013,
25: 2667-2670.
doi: 10.3788/HPLPB20132510.2667
Abstract:
For heavy-ion radiotherapy, HIRFL-CSR (Heavy Ion Research Facility in Lanzhou-Cooler Storage Ring) needs a long term uniform ion beam extraction from HIRFL-CSR main ring to high energy beam transport line to meet the requirement of heavy-ion radiothe...
For heavy-ion radiotherapy, HIRFL-CSR (Heavy Ion Research Facility in Lanzhou-Cooler Storage Ring) needs a long term uniform ion beam extraction from HIRFL-CSR main ring to high energy beam transport line to meet the requirement of heavy-ion radiothe...
2013,
25: 2671-2674.
doi: 10.3788/HPLPB20132510.2671
Abstract:
Based on the prototype of rapid cycling synchrotron of China spallation neutron source(CSNS/RCS) RF system, this paper presents a scheme on beam loading compensation in high-intensity proton synchrotron. The scheme includes adaptive beam feedforward,...
Based on the prototype of rapid cycling synchrotron of China spallation neutron source(CSNS/RCS) RF system, this paper presents a scheme on beam loading compensation in high-intensity proton synchrotron. The scheme includes adaptive beam feedforward,...
2013,
25: 2675-2681.
doi: 10.3788/HPLPB20132510.2675
Abstract:
Proton beam window (PBW) is a critical component of the China accelerator-driven system (C-ADS), which will isolate the accelerator vacuum from the target. Scattering effect induced by material of the PBW and the cooling medium is the most important ...
Proton beam window (PBW) is a critical component of the China accelerator-driven system (C-ADS), which will isolate the accelerator vacuum from the target. Scattering effect induced by material of the PBW and the cooling medium is the most important ...
2013,
25: 2682-2686.
doi: 10.3788/HPLPB20132510.2682
Abstract:
The laser-induced breakdown spectroscopy was applied to the measurement of pulverized coal flow. The interaction between laser and sample stream, as well as the effects of different focal depth on the plasma excitation characteristics was analyzed. O...
The laser-induced breakdown spectroscopy was applied to the measurement of pulverized coal flow. The interaction between laser and sample stream, as well as the effects of different focal depth on the plasma excitation characteristics was analyzed. O...
2013,
25: 2687-2692.
doi: 10.3788/HPLPB20132510.2687
Abstract:
Considering the working principle of the neutral beam injection system (NBI) for experimental advanced superconducting tokamak (EAST), the ion dump using calorimetric method with cooling tube inside was proposed to absorb the un-neutralized ions and ...
Considering the working principle of the neutral beam injection system (NBI) for experimental advanced superconducting tokamak (EAST), the ion dump using calorimetric method with cooling tube inside was proposed to absorb the un-neutralized ions and ...
2013,
25: 2693-2698.
doi: 10.3788/HPLPB20132510.2693
Abstract:
In cone-beam CT imaging system, it is difficult to directly measure the geometry parameters. In this paper, a geometry calibration method for rotation translation trajectory is proposed. Intrinsic parameters are solved from the relationship built on ...
In cone-beam CT imaging system, it is difficult to directly measure the geometry parameters. In this paper, a geometry calibration method for rotation translation trajectory is proposed. Intrinsic parameters are solved from the relationship built on ...
2013,
25: 2699-2704.
doi: 10.3788/HPLPB20132510.2699
Abstract:
An online measurement system for radiation effects on synchronous dynamic random access memory (SDRAM) is developed on the basis of the analysis of the main failure phenomenon, which can test the function, refresh period and power supply current. The...
An online measurement system for radiation effects on synchronous dynamic random access memory (SDRAM) is developed on the basis of the analysis of the main failure phenomenon, which can test the function, refresh period and power supply current. The...
2013,
25: 2705-2710.
doi: 10.3788/HPLPB20132510.2705
Abstract:
Single event effect experimental study on 90 nm and 65 nm DDR SRAM were carried out, single event upset (SEU) cross section was discussed as a function of several parameters such as feature size, test pattern, incidence angle, supply voltage. Key inf...
Single event effect experimental study on 90 nm and 65 nm DDR SRAM were carried out, single event upset (SEU) cross section was discussed as a function of several parameters such as feature size, test pattern, incidence angle, supply voltage. Key inf...
2013,
25: 2711-2716.
doi: 10.3788/HPLPB20132510.2711
Abstract:
With SiC diode and neutron conversion material 6LiF, neutron detector based on SiC was fabricated. The alpha-particle and thermal neutron response of neutron detector based on SiC were studied by 241Am-alpha source and critical assembly, respectively...
With SiC diode and neutron conversion material 6LiF, neutron detector based on SiC was fabricated. The alpha-particle and thermal neutron response of neutron detector based on SiC were studied by 241Am-alpha source and critical assembly, respectively...
2013,
25: 2717-2722.
doi: 10.3788/HPLPB20132510.2717
Abstract:
The microwave circulator is expected to be integrated with low temperature co-fired ceramics (LTCC) technique by multilayer chip structure design. In this paper, the X band microstrip ferrite circulator is designed with the three-dimensional electrom...
The microwave circulator is expected to be integrated with low temperature co-fired ceramics (LTCC) technique by multilayer chip structure design. In this paper, the X band microstrip ferrite circulator is designed with the three-dimensional electrom...
2013,
25: 2723-2728.
doi: 10.3788/HPLPB20132510.2723
Abstract:
Wear-resistant composite coatings were fabricated on substrate of a titanium alloy Ti6Al4V by laser metal deposition (LMD) process using Cr2C3, WC and Ti powders in order to enhance the tribological properties of Ti6Al4V. The microstructure of the co...
Wear-resistant composite coatings were fabricated on substrate of a titanium alloy Ti6Al4V by laser metal deposition (LMD) process using Cr2C3, WC and Ti powders in order to enhance the tribological properties of Ti6Al4V. The microstructure of the co...
Experimental condition optimization of laser-induced breakdown spectroscopy based on sequential test
2013,
25: 2729-2733.
doi: 10.3788/HPLPB20132510.2729
Abstract:
The Nd: YAG pulsed laser with 1064 nm wavelength was used as a light source to produce laser-induced plasma on the surface of the aluminum alloy, and the spectral signal was detected with three-grating spectrometer and width controlled ICCD. The inte...
The Nd: YAG pulsed laser with 1064 nm wavelength was used as a light source to produce laser-induced plasma on the surface of the aluminum alloy, and the spectral signal was detected with three-grating spectrometer and width controlled ICCD. The inte...
2013,
25: 2734-2738.
doi: 10.3788/HPLPB20132510.2734
Abstract:
The detector quantum efficiency (DQE) is used to describe the propagation of the noise in the imaging system. According to the cascade theory, the DQE of the high-energy gamma camera depends on the gain of the scintillator and the CCD, and the absorb...
The detector quantum efficiency (DQE) is used to describe the propagation of the noise in the imaging system. According to the cascade theory, the DQE of the high-energy gamma camera depends on the gain of the scintillator and the CCD, and the absorb...
2013,
25: 2739-2741.
doi: 10.3788/HPLPB20132510.2739
Abstract:
A thermionic cathode with a mixed LaB6 and TaC emission layer was investigated. Emission properties of cathodes with LaB6 to TaC weight ratios of 1∶1, 2∶1, and 3∶1 were studied and compared. The work function of the mixed LaB6 cathode was found to be...
A thermionic cathode with a mixed LaB6 and TaC emission layer was investigated. Emission properties of cathodes with LaB6 to TaC weight ratios of 1∶1, 2∶1, and 3∶1 were studied and compared. The work function of the mixed LaB6 cathode was found to be...
2013,
25: 2742-2746.
doi: 10.3788/HPLPB20132510.2742
Abstract:
A high-voltage pulsed power supply for testing the character of ZnO varistor, with adjustable pulse width, repetition frequency and running time, and most 80 kV rectangle wave-output voltage, is developed. Rectangle-wave voltage pulse is produced by ...
A high-voltage pulsed power supply for testing the character of ZnO varistor, with adjustable pulse width, repetition frequency and running time, and most 80 kV rectangle wave-output voltage, is developed. Rectangle-wave voltage pulse is produced by ...
2013,
25: 2747-2752.
doi: 10.3788/HPLPB20132510.2747
Abstract:
Under the assumption that the guide rail is a semi-infinite solid conductor and main armature surface wear is the wear based on melting, and according to the solid contact heat conduction principle, the armature and the rail temperature distribution ...
Under the assumption that the guide rail is a semi-infinite solid conductor and main armature surface wear is the wear based on melting, and according to the solid contact heat conduction principle, the armature and the rail temperature distribution ...
2013,
25: 2753-2756.
doi: 10.3788/HPLPB20132510.2753
Abstract:
The non-parametric method is conventionally used to evaluate data in lot acceptance testing (LAT) of transient ionizing radiation. But the evaluation results are very conservative and will lead to an increase of the trial cost. The ordering method in...
The non-parametric method is conventionally used to evaluate data in lot acceptance testing (LAT) of transient ionizing radiation. But the evaluation results are very conservative and will lead to an increase of the trial cost. The ordering method in...
2013,
25: 2757-2762.
doi: 10.3788/HPLPB20132510.2757
Abstract:
The differential capacitive voltage divider and inductive voltage divider were designed for voltage measurement of magnetically-insulated transmission line (MITL) on a 10-stage fast linear transformer driver (LTD) system. The dividers were calibrated...
The differential capacitive voltage divider and inductive voltage divider were designed for voltage measurement of magnetically-insulated transmission line (MITL) on a 10-stage fast linear transformer driver (LTD) system. The dividers were calibrated...
2013,
25: 2763-2766.
doi: 10.3788/HPLPB20132510.2763
Abstract:
The inductances of the primary and second coil are important parameters of Tesla transformer. Some elementary research is carried out on the magnetic circuit of Tesla transformer with open circuit magnetic core, including the calculation on magnetic ...
The inductances of the primary and second coil are important parameters of Tesla transformer. Some elementary research is carried out on the magnetic circuit of Tesla transformer with open circuit magnetic core, including the calculation on magnetic ...
2013,
25: 2767-2771.
doi: 10.3788/HPLPB20132510.2767
Abstract:
No whole-stack flashover has been observed under the working voltage of about 2 MV in the PTS vacuum insulator stack, because of the uniform voltage distributions on different insulator rings, the effects of azimuthal transit-time and multi-stage str...
No whole-stack flashover has been observed under the working voltage of about 2 MV in the PTS vacuum insulator stack, because of the uniform voltage distributions on different insulator rings, the effects of azimuthal transit-time and multi-stage str...
2013,
25: 2772-2776.
doi: 10.3788/HPLPB20132510.2772
Abstract:
A multi-gap rail switch is introduced with its configuration and self-breakdown experiments. The streamer theory gives a Raether criterion which is used to estimate if the gap can be broken down. An equation about self-breakdown voltage is obtained f...
A multi-gap rail switch is introduced with its configuration and self-breakdown experiments. The streamer theory gives a Raether criterion which is used to estimate if the gap can be broken down. An equation about self-breakdown voltage is obtained f...
