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RSS2002 Vol. 14, No. 05
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2002,
14.
Abstract:
Linear introduction accelerator is expected to generate small diameter xray spots with high intensity． The interaction of the electron beam with plasmas generated at the xray converter will make the spot on target increase with time and debase the ...
Linear introduction accelerator is expected to generate small diameter xray spots with high intensity． The interaction of the electron beam with plasmas generated at the xray converter will make the spot on target increase with time and debase the ...
2002,
14.
Abstract:
Building time and jitter of the Marx generator are mainly depend on work state of spark gap switch during operating. Meanwhile they are related to amplitude and polarity of trigging voltage. The paper briefly describes physical process of conductance...
Building time and jitter of the Marx generator are mainly depend on work state of spark gap switch during operating. Meanwhile they are related to amplitude and polarity of trigging voltage. The paper briefly describes physical process of conductance...
2002,
14.
Abstract:
The incident angles have a heavy effect on the intense pulsed electr on beam energy deposition profile, energy deposition fraction and beam current transmission fraction in material. This article presents electron beam energy deposition profile and e...
The incident angles have a heavy effect on the intense pulsed electr on beam energy deposition profile, energy deposition fraction and beam current transmission fraction in material. This article presents electron beam energy deposition profile and e...
2002,
14.
Abstract:
This article presents a BPM (Beam Position Monitor) calibration system developed for phase II of HLS (Hefei Synchrotron Radiation Light Source). The paper describes the development of the test stand and emphasizes key technique that guarantees mechan...
This article presents a BPM (Beam Position Monitor) calibration system developed for phase II of HLS (Hefei Synchrotron Radiation Light Source). The paper describes the development of the test stand and emphasizes key technique that guarantees mechan...
2002,
14.
Abstract:
The investigation on the solid liner implosion driven by the high energy density physical facility FP1 is reviewed in this paper. The contents include the characteristics of FP1 and the main physics experiments of Al liner implosion, two liner impa...
The investigation on the solid liner implosion driven by the high energy density physical facility FP1 is reviewed in this paper. The contents include the characteristics of FP1 and the main physics experiments of Al liner implosion, two liner impa...
2002,
14.
Abstract:
The Mach number of the gas flow from the supersonic nozzle in a gaspuff Zpinch was determined by the two pressure transducer method. The measured Mach number rises with time and reaches to a maximum value of 4.25 that is close to 4.8, the value from...
The Mach number of the gas flow from the supersonic nozzle in a gaspuff Zpinch was determined by the two pressure transducer method. The measured Mach number rises with time and reaches to a maximum value of 4.25 that is close to 4.8, the value from...
2002,
14.
Abstract:
This paper presents some preliminary results of a laser synchrotron source (LSS) based on Compton/Thomson scattering of electron and laser beams in headon and offaxis geometry. This approach opens a new route toward ultrashort, highbrightness, qu...
This paper presents some preliminary results of a laser synchrotron source (LSS) based on Compton/Thomson scattering of electron and laser beams in headon and offaxis geometry. This approach opens a new route toward ultrashort, highbrightness, qu...
2002,
14.
Abstract:
Energy spectrum analytic system of 200MeV linear accelerator in NSRL is used to detect the beam energy and to guild the machine adjustment. This paper shows the former status of the system, and analyses some of its shortcomings. In the NSRL projectI...
Energy spectrum analytic system of 200MeV linear accelerator in NSRL is used to detect the beam energy and to guild the machine adjustment. This paper shows the former status of the system, and analyses some of its shortcomings. In the NSRL projectI...
2002,
14.
Abstract:
A 100kV/2A threephase constantcurrent repetitiverate charging equipment was designed and constructed. A threephase LC converter is adopted as constantcurrent power source. Six Insulated Gate Bipolar Transistors(IGBTs) are connected in parallel ...
A 100kV/2A threephase constantcurrent repetitiverate charging equipment was designed and constructed. A threephase LC converter is adopted as constantcurrent power source. Six Insulated Gate Bipolar Transistors(IGBTs) are connected in parallel ...
2002,
14.
Abstract:
The characteristics of stimulated Brillouin scattering reflectivity and pulse compression ratio for broadband (15GHz) KrF laser radiation pump in SF6 gas are investigated numerically and experimentally in this paper. It has obtained that a peak refle...
The characteristics of stimulated Brillouin scattering reflectivity and pulse compression ratio for broadband (15GHz) KrF laser radiation pump in SF6 gas are investigated numerically and experimentally in this paper. It has obtained that a peak refle...
2002,
14.
Abstract:
The laser combustion diagnostic system was developed. With tunable lasers, the temperatures and species in methaneair flame were given by laserinduced fluorescence, Raman scattering and CARS. The spectralfit precision was less than 10% for single ...
The laser combustion diagnostic system was developed. With tunable lasers, the temperatures and species in methaneair flame were given by laserinduced fluorescence, Raman scattering and CARS. The spectralfit precision was less than 10% for single ...
2002,
14.
Abstract:
A novel tabletop Ti: Sapphire/ KrF ultrashort pulse laser system was developed for laser matter interaction researches in CIAE. The characterization and optimization of output parameters of this UV shortpulse laser system were described in this lett...
A novel tabletop Ti: Sapphire/ KrF ultrashort pulse laser system was developed for laser matter interaction researches in CIAE. The characterization and optimization of output parameters of this UV shortpulse laser system were described in this lett...
2002,
14.
Abstract:
Stimulated Brillouin Scattering (SBS) is a process to product the phase conjugated light. Now it is being pursued as a means for pulse compression, beam combination and wavefront reversal. To achieve a high quality short pulse beam, to select a prop...
Stimulated Brillouin Scattering (SBS) is a process to product the phase conjugated light. Now it is being pursued as a means for pulse compression, beam combination and wavefront reversal. To achieve a high quality short pulse beam, to select a prop...
2002,
14.
Abstract:
The influence of the ponderomotive force on interaction of the ultrashort pulse laser with the solid plasma was studied by measuring the frequency shift induced by the movement of plasma critical surface. When laser intensity reache 1017W/cm2, the po...
The influence of the ponderomotive force on interaction of the ultrashort pulse laser with the solid plasma was studied by measuring the frequency shift induced by the movement of plasma critical surface. When laser intensity reache 1017W/cm2, the po...
2002,
14.
Abstract:
Some important technological problems with stable operation of the twoside electron beam pumped main amplifier used in the “Heavn1” high power KrF excimer laser system are described. They are the problems of the electric breakdown of the insulator ...
Some important technological problems with stable operation of the twoside electron beam pumped main amplifier used in the “Heavn1” high power KrF excimer laser system are described. They are the problems of the electric breakdown of the insulator ...
2002,
14.
Abstract:
A time and spaceresolved flatgrating spectrometer is developed. It is composed of a varied linespace grating with 2 400 lp/mm or 1 200 lp/mm, a gated MCP framing camera and an optical CCD system. The principle, the construction and adjustment met...
A time and spaceresolved flatgrating spectrometer is developed. It is composed of a varied linespace grating with 2 400 lp/mm or 1 200 lp/mm, a gated MCP framing camera and an optical CCD system. The principle, the construction and adjustment met...
2002,
14.
Abstract:
1w and 3 w near field beam quality for highintensity THG have been measured, and 3 w near field beam quality measured in experiments is compared with that simulated and calculated. Especially, the errors produced in simulation and calculation of nea...
1w and 3 w near field beam quality for highintensity THG have been measured, and 3 w near field beam quality measured in experiments is compared with that simulated and calculated. Especially, the errors produced in simulation and calculation of nea...
2002,
14.
Abstract:
A nonlinear evolution equation for the radiation field in magnetically insulated transmission line oscillator (MILO) is derived and the threshold conditions of the nonlinear unstable solution are studied. The results show: (1) The instability will ar...
A nonlinear evolution equation for the radiation field in magnetically insulated transmission line oscillator (MILO) is derived and the threshold conditions of the nonlinear unstable solution are studied. The results show: (1) The instability will ar...
2002,
14.
Abstract:
When an electron beam is injected into plasma, an ionchannel might form if the beam density is relatively high. A dispersion equation of a circular cylindrical waveguide with the ionchannel taken into account is given in this paper. The properties ...
When an electron beam is injected into plasma, an ionchannel might form if the beam density is relatively high. A dispersion equation of a circular cylindrical waveguide with the ionchannel taken into account is given in this paper. The properties ...
2002,
14.
Abstract:
Based on the mode coupling theory, this paper analyzes the critical angle of the TE01—TM11 mode converter completely by traditional waveguide axis constant curvature. Energy converted from TE01 to TM11 mode by all under the critical angle with multim...
Based on the mode coupling theory, this paper analyzes the critical angle of the TE01—TM11 mode converter completely by traditional waveguide axis constant curvature. Energy converted from TE01 to TM11 mode by all under the critical angle with multim...
2002,
14.
Abstract:
In photocathode RF gun, the Schottky effect in process of photoemission and electron lognitudinal accelerating process bring forth a linear work range in which electron charge out of gun is linear proportion to laser injection phase . According to t...
In photocathode RF gun, the Schottky effect in process of photoemission and electron lognitudinal accelerating process bring forth a linear work range in which electron charge out of gun is linear proportion to laser injection phase . According to t...
2002,
14.
Abstract:
The feasibility of propagating annular IREB in periodic permanent magnetic (PPM) field is studied. The PPM field is calculated first using the finite element magnetic method (FEMM). Then forces acting on IREB’s electron in such magnetic field are ana...
The feasibility of propagating annular IREB in periodic permanent magnetic (PPM) field is studied. The PPM field is calculated first using the finite element magnetic method (FEMM). Then forces acting on IREB’s electron in such magnetic field are ana...
2002,
14.
Abstract:
A particle�incell (PIC) code is used to simulate the physical mechanism and interaction process of the relativistic backward wave oscillator (RBWO) filled with neutral gas. The simulation results reveal the production process of the plasma due to the...
A particle�incell (PIC) code is used to simulate the physical mechanism and interaction process of the relativistic backward wave oscillator (RBWO) filled with neutral gas. The simulation results reveal the production process of the plasma due to the...
2002,
14.
Abstract:
The angular multipexing system is the chief part in the MOPA. It links the mainoscillator, preamplifier and main amplifier up together, and acts as a laser pulse wide compressor. The angular multipexing system can make full use of the electron energ...
The angular multipexing system is the chief part in the MOPA. It links the mainoscillator, preamplifier and main amplifier up together, and acts as a laser pulse wide compressor. The angular multipexing system can make full use of the electron energ...
2002,
14.
Abstract:
The soft aperture slots and multi spatial filters had been used to transmit the same phase of laser beams, the characters measurement system of 4×2×3 multislabamplifier design has been optimized by a program of Fresnel, where the sizes of pinholes ...
The soft aperture slots and multi spatial filters had been used to transmit the same phase of laser beams, the characters measurement system of 4×2×3 multislabamplifier design has been optimized by a program of Fresnel, where the sizes of pinholes ...
2002,
14.
Abstract:
This paper presents how to recognize targets under complicated background of cloud in sky by stimulating optical correlation. Some factors influencing recognition are calculated, such as changes of background intensity, edge detection of input image ...
This paper presents how to recognize targets under complicated background of cloud in sky by stimulating optical correlation. Some factors influencing recognition are calculated, such as changes of background intensity, edge detection of input image ...
2002,
14.
Abstract:
In the numerical simulation of 3D amplified spontaneous emission(ASE), we have investigated the effects of side reflection of ASE and the spectrum line shapes (Gaussian, Lorentzion and Square hat forms) of KrF spontaneous emission, including the inf...
In the numerical simulation of 3D amplified spontaneous emission(ASE), we have investigated the effects of side reflection of ASE and the spectrum line shapes (Gaussian, Lorentzion and Square hat forms) of KrF spontaneous emission, including the inf...
2002,
14.
Abstract:
In this paper, the kinetics of XeF(C-A) laser were presented. The structures of the surface discharge optically pumping source and the laser devices were introduced. Experimental study and numerical simulation of XeF(CA) laser, as well as the detect...
In this paper, the kinetics of XeF(C-A) laser were presented. The structures of the surface discharge optically pumping source and the laser devices were introduced. Experimental study and numerical simulation of XeF(CA) laser, as well as the detect...
2002,
14.
Abstract:
The freevortex aerodynamic window(FADW) can take the place of the conventional crystal output window sealing the lower pressure laser cavity of high energy lasers effectively. But the supersonic flow of the FADW will introduce some deformation to the...
The freevortex aerodynamic window(FADW) can take the place of the conventional crystal output window sealing the lower pressure laser cavity of high energy lasers effectively. But the supersonic flow of the FADW will introduce some deformation to the...
2002,
14.
Abstract:
In this paper, the atmospheric transmittances, the attenuation coefficient and the absorption coefficient of spectrum lines 20P4 and 20P5 of HF overtone laser are studied. The attenuation coefficient of 20P4 is 0.26～0.27km-1，and that of 20P5 is 2.24～...
In this paper, the atmospheric transmittances, the attenuation coefficient and the absorption coefficient of spectrum lines 20P4 and 20P5 of HF overtone laser are studied. The attenuation coefficient of 20P4 is 0.26～0.27km-1，and that of 20P5 is 2.24～...
2002,
14.
Abstract:
Experimental investigations were performed for amplification of ultrashort pulse laser with HeavenI ebeam pumped KrF amplifier in CIAE. A 50mJ, 420fs UV ultrashort pulse was amplified to 2-3J energy, 1.2ps pulse duration, and 2TW laser power. Experi...
Experimental investigations were performed for amplification of ultrashort pulse laser with HeavenI ebeam pumped KrF amplifier in CIAE. A 50mJ, 420fs UV ultrashort pulse was amplified to 2-3J energy, 1.2ps pulse duration, and 2TW laser power. Experi...
2002,
14.
Abstract:
The matrix decomposition and equivalent transformation of nonsymmetrical optical systems are studied by using matrix method in optics. The method introduced by Arsenault is extended to decomposing a 4×4 matrix, the determinant of the corresponding bl...
The matrix decomposition and equivalent transformation of nonsymmetrical optical systems are studied by using matrix method in optics. The method introduced by Arsenault is extended to decomposing a 4×4 matrix, the determinant of the corresponding bl...
2002,
14.
Abstract:
The film structure determined temperature and standing wave field's characters which formed in laser irradiated optical thin film is presented, the temperature and standing wave fields is calculated for IR filter as an example. The research on damage...
The film structure determined temperature and standing wave field's characters which formed in laser irradiated optical thin film is presented, the temperature and standing wave fields is calculated for IR filter as an example. The research on damage...
2002,
14.
Abstract:
Pulsed lasers of two different durations (30 ns, 500 fs) are used to deposit Hydrogenfree Diamond Like Carbon (DLC) films over large areas. Analysis of DLC films shows remarkable mechanical, optical, electrical, and chemical properties that are clos...
Pulsed lasers of two different durations (30 ns, 500 fs) are used to deposit Hydrogenfree Diamond Like Carbon (DLC) films over large areas. Analysis of DLC films shows remarkable mechanical, optical, electrical, and chemical properties that are clos...
2002,
14.
Abstract:
The method using diaphragm to change the mode volume ratio between the forward and the reverse mode to suppress the reverse mode in the symmetric confocal ring resonators is presented. And the different effects of the reverse mode suppression for pos...
The method using diaphragm to change the mode volume ratio between the forward and the reverse mode to suppress the reverse mode in the symmetric confocal ring resonators is presented. And the different effects of the reverse mode suppression for pos...
2002,
14.
Abstract:
By using the secondorder moments method and generalized HuygensFresnel diffraction integral, the optical system used for symmetrizing Hermite Gaussian beams with real argument is applied to study the transformation of astigmatic HermiteGaussian be...
By using the secondorder moments method and generalized HuygensFresnel diffraction integral, the optical system used for symmetrizing Hermite Gaussian beams with real argument is applied to study the transformation of astigmatic HermiteGaussian be...
2002,
14.
Abstract:
A thermoplastic, the MeltMount 1.704 doped with carbon as an index matching material is used to suppress the transverse parasitic lasing in a 8cm Ti: sapphire laser amplifier disk. It increases the oscillation threshold from 13 to 2100 theoretically....
A thermoplastic, the MeltMount 1.704 doped with carbon as an index matching material is used to suppress the transverse parasitic lasing in a 8cm Ti: sapphire laser amplifier disk. It increases the oscillation threshold from 13 to 2100 theoretically....
