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RSS2009 Vol. 21, No. 07
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2009,
21.
Abstract:
Influences of the transparent liquids’ bulk modulus, dynamic-viscosity coefficient and the absorbed laser pulse energy in the breakdown region on the peak pressure, the sound energy and the dominant frequency of the laser induced expanding sound are ...
Influences of the transparent liquids’ bulk modulus, dynamic-viscosity coefficient and the absorbed laser pulse energy in the breakdown region on the peak pressure, the sound energy and the dominant frequency of the laser induced expanding sound are ...
2009,
21.
Abstract:
In order to explore the relation between N2-broadening and air-broadening coefficients of water vapor molecules in near-infrared region, a high-sensitive continuous-wave cavity ring down spectroscopy, which used a glass-ceramic as the cavity and a di...
In order to explore the relation between N2-broadening and air-broadening coefficients of water vapor molecules in near-infrared region, a high-sensitive continuous-wave cavity ring down spectroscopy, which used a glass-ceramic as the cavity and a di...
2009,
21.
Abstract:
The (1+1)D spatial optical soliton solutions in nematic liquid crystal are obtained in both weakly and strongly nonlocal limits. By an approximate calculation of the nonlocal nonlinear term in both cases, the propagation equation of beams is derived....
The (1+1)D spatial optical soliton solutions in nematic liquid crystal are obtained in both weakly and strongly nonlocal limits. By an approximate calculation of the nonlocal nonlinear term in both cases, the propagation equation of beams is derived....
2009,
21.
Abstract:
A high-average-power high-efficiency high-repetition-rate mid-infrared laser at 3.84 μm was demonstrated.The laser was based on quasi-phase-matched periodically poled LiNbO3(PPMgLN) optical parametric oscillator(OPO),pumped by elliptical 1.06 μm lase...
A high-average-power high-efficiency high-repetition-rate mid-infrared laser at 3.84 μm was demonstrated.The laser was based on quasi-phase-matched periodically poled LiNbO3(PPMgLN) optical parametric oscillator(OPO),pumped by elliptical 1.06 μm lase...
2009,
21.
Abstract:
Large eddy simulation has been preformed for the mixing analysis of chemical oxygen-iodine lasers. Traceable results for both flow field and scalar field show that large eddy simulation is a valid approach for the theoretical study of chemical flows....
Large eddy simulation has been preformed for the mixing analysis of chemical oxygen-iodine lasers. Traceable results for both flow field and scalar field show that large eddy simulation is a valid approach for the theoretical study of chemical flows....
2009,
21.
Abstract:
The thermal distortion in the conduction cooled end-pumped zig-zag slab under different cooling conditions were analyzed by numerical simulation. The results indicate that the thermal distortion could be reduced by 3 orders of magnitude in zig-zag pr...
The thermal distortion in the conduction cooled end-pumped zig-zag slab under different cooling conditions were analyzed by numerical simulation. The results indicate that the thermal distortion could be reduced by 3 orders of magnitude in zig-zag pr...
2009,
21.
Abstract:
An eigenvector method is used to calculate the mode distribution, misalignment and beam quality factor of a resonator with a two-dimensional misalignment angle. In the calculation model, the gain medium is regarded as a sheet inside the mirror. It is...
An eigenvector method is used to calculate the mode distribution, misalignment and beam quality factor of a resonator with a two-dimensional misalignment angle. In the calculation model, the gain medium is regarded as a sheet inside the mirror. It is...
2009,
21.
Abstract:
A novel multiple-electrode electrostatic deflector (petal-like) is introduced. It can be got by symmetrically slotting a cylindrical electrode into eight separate parts. The Fourier analysis of the potential distribution on the circumference of the e...
A novel multiple-electrode electrostatic deflector (petal-like) is introduced. It can be got by symmetrically slotting a cylindrical electrode into eight separate parts. The Fourier analysis of the potential distribution on the circumference of the e...
2009,
21.
Abstract:
Features of a practical asymmetric electrode system were studied. The anode of this system is an analytical electrode such as Chang electrode and Ernst electrode, and the cathode is a simple electrode with line-arc structure. The electric field of th...
Features of a practical asymmetric electrode system were studied. The anode of this system is an analytical electrode such as Chang electrode and Ernst electrode, and the cathode is a simple electrode with line-arc structure. The electric field of th...
2009,
21.
Abstract:
According to the steady-state heat conduction equation, the temperature distribution in the high power double-clad fiber laser(DCFL) has been analyzed. The influence of fiber size, cooling-boundary condition and pump power on temperature distribution...
According to the steady-state heat conduction equation, the temperature distribution in the high power double-clad fiber laser(DCFL) has been analyzed. The influence of fiber size, cooling-boundary condition and pump power on temperature distribution...
2009,
21.
Abstract:
A series of low energy X-ray spectral lines which have constant energy have been detected in hydrogen gas discharge source bombarding targets. Their energy are 1.7 keV, 2.3 keV, 2.6 keV, 3.3 keV and 3.7 keV, respectively. These anonymous spectral lin...
A series of low energy X-ray spectral lines which have constant energy have been detected in hydrogen gas discharge source bombarding targets. Their energy are 1.7 keV, 2.3 keV, 2.6 keV, 3.3 keV and 3.7 keV, respectively. These anonymous spectral lin...
2009,
21.
Abstract:
A new method for ICF fuel content measuring based on laser Raman scattering is presented, which can directly and non-destructively analyzes deuterium gas content in shells. Since the incident and scattered lights would traverse through the shell wall...
A new method for ICF fuel content measuring based on laser Raman scattering is presented, which can directly and non-destructively analyzes deuterium gas content in shells. Since the incident and scattered lights would traverse through the shell wall...
2009,
21.
Abstract:
According to the requirement of beam smoothing in laser systems, the continuous phase plate with Gaussian distribution is designed. The far-field distributions of such phase plate with correlation lengths of 39 mm, 30 mm, 10 mm and 3 mm are calculate...
According to the requirement of beam smoothing in laser systems, the continuous phase plate with Gaussian distribution is designed. The far-field distributions of such phase plate with correlation lengths of 39 mm, 30 mm, 10 mm and 3 mm are calculate...
2009,
21.
Abstract:
In order to systemically investigate the morphology and microstructure induced in fused silica by UV (355 nm) laser pulses at high fluence, a suite of microscopic tools have been used, such as Nomarski optics microscope,AFM and SEM. Two types of dama...
In order to systemically investigate the morphology and microstructure induced in fused silica by UV (355 nm) laser pulses at high fluence, a suite of microscopic tools have been used, such as Nomarski optics microscope,AFM and SEM. Two types of dama...
2009,
21.
Abstract:
Based on the light defect images against the dark background in a scattering imaging system, a digital detection system of surface defects for large aperture optical elements has been presented. In the system, the image is segmented by a multi-area s...
Based on the light defect images against the dark background in a scattering imaging system, a digital detection system of surface defects for large aperture optical elements has been presented. In the system, the image is segmented by a multi-area s...
2009,
21.
Abstract:
Plated ICF glass targets were treated under 300 ℃, 700 ℃ and 1 000 ℃ for one hour, respectively. Structure, morphology and magnetic property of the plated ICF glass targets were characterized by X-ray diffraction(XRD), scanning electron microscopy(SE...
Plated ICF glass targets were treated under 300 ℃, 700 ℃ and 1 000 ℃ for one hour, respectively. Structure, morphology and magnetic property of the plated ICF glass targets were characterized by X-ray diffraction(XRD), scanning electron microscopy(SE...
2009,
21.
Abstract:
Microwave power spatial synthesis from multi-source is an effective and widely used method to realize high power microwave radiation. In many cases, output power of high power microwave sources is with random phase shift because of their unstable pro...
Microwave power spatial synthesis from multi-source is an effective and widely used method to realize high power microwave radiation. In many cases, output power of high power microwave sources is with random phase shift because of their unstable pro...
2009,
21.
Abstract:
Waveform converting and angular filtering properties of zero-electric and zero-magnetic(ZEM) materials slab were simulated under line source, TM wave and dipole irradiation, respectively, using finite-difference time-domain(FDTD) method. Simulation r...
Waveform converting and angular filtering properties of zero-electric and zero-magnetic(ZEM) materials slab were simulated under line source, TM wave and dipole irradiation, respectively, using finite-difference time-domain(FDTD) method. Simulation r...
2009,
21.
Abstract:
To understand timedomain change characteristics of electrical field in the building, the simulation of three electromagnetic pulses propagating, reflecting and transmitting in a building was done by FDTD method. The influence of different pulse para...
To understand timedomain change characteristics of electrical field in the building, the simulation of three electromagnetic pulses propagating, reflecting and transmitting in a building was done by FDTD method. The influence of different pulse para...
2009,
21.
Abstract:
The super fragment separator (super-FRS) of the FAIR project (facility for antiproton and ion research) consists of two superconducting coils. The maximum magnetic field is as high as 1.6 T, which results in large magnetic force. In order to assure t...
The super fragment separator (super-FRS) of the FAIR project (facility for antiproton and ion research) consists of two superconducting coils. The maximum magnetic field is as high as 1.6 T, which results in large magnetic force. In order to assure t...
2009,
21.
Abstract:
To study the phase characteristics of solid-state amplifiers (20 kW/142.8 MHz, 10 kW/571.2 MHz) in sub-harmonic bunchers(SHBs) of the BEPC Ⅱ linear accelerator, phase shift in pulse and phase stability are measured using a digital measurement method ...
To study the phase characteristics of solid-state amplifiers (20 kW/142.8 MHz, 10 kW/571.2 MHz) in sub-harmonic bunchers(SHBs) of the BEPC Ⅱ linear accelerator, phase shift in pulse and phase stability are measured using a digital measurement method ...
2009,
21.
Abstract:
Recently, great attention has been paid to short electron pulses because of the requirement for free electron laser(FEL) projects. To generate a 0.2 nC, 5 ps, 2 MeV electron bunch with a normalized emittance better than 50 mm·mrad without compensatio...
Recently, great attention has been paid to short electron pulses because of the requirement for free electron laser(FEL) projects. To generate a 0.2 nC, 5 ps, 2 MeV electron bunch with a normalized emittance better than 50 mm·mrad without compensatio...
2009,
21.
Abstract:
The beam horizontal orbit at Hefei light source(HLS) was drifting all along while the storage ring was operating due to the drift of BPM chamber mainly caused by the thermal effect of synchrotron light. To monitor the BPM chamber motion for all BPMs,...
The beam horizontal orbit at Hefei light source(HLS) was drifting all along while the storage ring was operating due to the drift of BPM chamber mainly caused by the thermal effect of synchrotron light. To monitor the BPM chamber motion for all BPMs,...
2009,
21.
Abstract:
The laser shock-induced phase transformation of iron with different volume voids has been investigated by means of molecular dynamics（MD）simulations. By comparing the perfect single crystal iron and the iron with different volume voids, the effects o...
The laser shock-induced phase transformation of iron with different volume voids has been investigated by means of molecular dynamics（MD）simulations. By comparing the perfect single crystal iron and the iron with different volume voids, the effects o...
2009,
21.
Abstract:
Irregularly-shaped tungsten powders(average granular sizes of 5~12 μm) have been spheroidized by radio frequency(RF) induction plasma. The effects of feed rate, mode of material dispersion, particle size on spheroidization efficiency are investigated...
Irregularly-shaped tungsten powders(average granular sizes of 5~12 μm) have been spheroidized by radio frequency(RF) induction plasma. The effects of feed rate, mode of material dispersion, particle size on spheroidization efficiency are investigated...
2009,
21.
Abstract:
The energy spectrum of the developed sandwich chemical vapor deposition(CVD) diamond film detector to alpha-particles,has been measured by experiments at room temperature, for 241Am source with a characteristic energy of 5.485 MeV and 243Am and 244Cm...
The energy spectrum of the developed sandwich chemical vapor deposition(CVD) diamond film detector to alpha-particles,has been measured by experiments at room temperature, for 241Am source with a characteristic energy of 5.485 MeV and 243Am and 244Cm...
2009,
21.
Abstract:
An analytic approach to all-optical switch was present, and the two-photon absorption effect were taking into account to analyze all-optical switch, which is based on two-dimensional photonic crystal directional coupler, by means of the finite-differ...
An analytic approach to all-optical switch was present, and the two-photon absorption effect were taking into account to analyze all-optical switch, which is based on two-dimensional photonic crystal directional coupler, by means of the finite-differ...
2009,
21.
Abstract:
A novel approach for subwavelength imaging is proposed using a positive-refractive-index(PRI) media slab lens excited by an embedded source. Both evanescent wave and propagating voltage wave distribution are analyzed inside and outside a PRI media sl...
A novel approach for subwavelength imaging is proposed using a positive-refractive-index(PRI) media slab lens excited by an embedded source. Both evanescent wave and propagating voltage wave distribution are analyzed inside and outside a PRI media sl...
2009,
21.
Abstract:
The current automated defect recognition of industrial computerized tomography(ICT) slice images is mostly carried out in individual image. Certain false detections would exist for some isolated noises can not be wiped off without considering the inf...
The current automated defect recognition of industrial computerized tomography(ICT) slice images is mostly carried out in individual image. Certain false detections would exist for some isolated noises can not be wiped off without considering the inf...
2009,
21.
Abstract:
To detect the fast logic pulse sequence related to random events, an online detecting system has been realized based on a 1 GHz ultra-high-speed A/D converter and a high-speed FPAG processor.PeakTDC algorithm was designed to seek the peak position of...
To detect the fast logic pulse sequence related to random events, an online detecting system has been realized based on a 1 GHz ultra-high-speed A/D converter and a high-speed FPAG processor.PeakTDC algorithm was designed to seek the peak position of...
2009,
21.
Abstract:
Some research has been conducted on making compact, portable pulse forming lines. Two kinds of dielectric are used as the energy storage materials in the pulse forming lines. They are a kind of ceramic and a kind of newly developed composite polymer....
Some research has been conducted on making compact, portable pulse forming lines. Two kinds of dielectric are used as the energy storage materials in the pulse forming lines. They are a kind of ceramic and a kind of newly developed composite polymer....
2009,
21.
Abstract:
A temporally-and spatially-resolved X-ray spectrometer, with spectral range of 1 500～2 300 eV and temporal resolution about 2 ns, has been developed for diagnosing K-shell radiation of aluminum wire array Z-pinch plasma driven by Qiangguang-I generat...
A temporally-and spatially-resolved X-ray spectrometer, with spectral range of 1 500～2 300 eV and temporal resolution about 2 ns, has been developed for diagnosing K-shell radiation of aluminum wire array Z-pinch plasma driven by Qiangguang-I generat...
2009,
21.
Abstract:
In Z-pinch diagnostic, Dante spectrometer plays an important role in the measurement of soft X-ray spectrum and total flux. This paper reports on the structure and channel configuration of a “Dante” spectrometer designed for z-pinch experiments on Ya...
In Z-pinch diagnostic, Dante spectrometer plays an important role in the measurement of soft X-ray spectrum and total flux. This paper reports on the structure and channel configuration of a “Dante” spectrometer designed for z-pinch experiments on Ya...
