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RSS1998 Vol. 10, No. 01
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1998,
10.
Abstract:
Using data which were measured from H-S wavefront sensor of an AO system, power spectra density(PSD) was calculated and compared between open loop and close loop conditions. This method can be used to analyze the time domain compensation ability of an AO control system. As an example, the control ability of a 61 element adaptive optics system with PI or Smith control algorithm is compared.
Using data which were measured from H-S wavefront sensor of an AO system, power spectra density(PSD) was calculated and compared between open loop and close loop conditions. This method can be used to analyze the time domain compensation ability of an AO control system. As an example, the control ability of a 61 element adaptive optics system with PI or Smith control algorithm is compared.
1998,
10.
Abstract:
Using a tapered waveguide Raman cell, the interaction region between the pumping laser beam and Raman media is increased. The power density decreased by the waveguide wall reflection is compensated by the narrowing of the tapered waveguide cross section. The Raman conversion efficiency is increased at some gas pressure of the Raman media. The uniformity of the first Stokes output is also improved by the tapered waveguide.
Using a tapered waveguide Raman cell, the interaction region between the pumping laser beam and Raman media is increased. The power density decreased by the waveguide wall reflection is compensated by the narrowing of the tapered waveguide cross section. The Raman conversion efficiency is increased at some gas pressure of the Raman media. The uniformity of the first Stokes output is also improved by the tapered waveguide.
1998,
10.
Abstract:
The optimum choice of grazing incidence on the basis of the demands soft X ray normal incidence microscopic optics is presented. The methods determined the elliptical condenser was carried out according to analyzing the geometric parameters of condenser. The structure of the condenser for soft X ray normal incidence microscopic optics was completed considering the reflective performance of materials and the techniques of the condenser.
The optimum choice of grazing incidence on the basis of the demands soft X ray normal incidence microscopic optics is presented. The methods determined the elliptical condenser was carried out according to analyzing the geometric parameters of condenser. The structure of the condenser for soft X ray normal incidence microscopic optics was completed considering the reflective performance of materials and the techniques of the condenser.
1998,
10.
Abstract:
A 1 D computer codes which adopted the equivalent lifetime of the terminal level relaxation to describe the gain recovery was developed for multipass amplification system. The simulation results of the 4 pass amplifier system with a small aperture reverser showed 1ns square pulse(1ω) with 2.8kJ energy could be obtained by employing 14 Nd:glass disks. The detail schemes and their characteristics of the system were given in the paper.
A 1 D computer codes which adopted the equivalent lifetime of the terminal level relaxation to describe the gain recovery was developed for multipass amplification system. The simulation results of the 4 pass amplifier system with a small aperture reverser showed 1ns square pulse(1ω) with 2.8kJ energy could be obtained by employing 14 Nd:glass disks. The detail schemes and their characteristics of the system were given in the paper.
1998,
10.
Abstract:
An injection heterolaser based on vertically coupled quantum dots of InGaAs/GaAs or InGaAs/AlGaAs are reported in this paper. The manufacture and the spectra of photoluminescence, calorimetric absorption and electroluminescence are presented. Its CW laser power could be 1 W at room temperature.
An injection heterolaser based on vertically coupled quantum dots of InGaAs/GaAs or InGaAs/AlGaAs are reported in this paper. The manufacture and the spectra of photoluminescence, calorimetric absorption and electroluminescence are presented. Its CW laser power could be 1 W at room temperature.
1998,
10.
Abstract:
The law of laser ablation on gold target is studied, it is the basic field of hohlraum physics. A measuring method of ablated thickness of Au plane targets has been described. To measure the ablated thickness of Au plane targets is practicable. During the experimental period, the X ray streak camera can't work, the effort to measure the ablation time of Au plane targets has failed.
The law of laser ablation on gold target is studied, it is the basic field of hohlraum physics. A measuring method of ablated thickness of Au plane targets has been described. To measure the ablated thickness of Au plane targets is practicable. During the experimental period, the X ray streak camera can't work, the effort to measure the ablation time of Au plane targets has failed.
1998,
10.
Abstract:
Methods of beam quality and the principle of laser beam analyzer are generally described. The results of 1.2～1.6 diffraction limits in a supersonic COIL with UR 90 cavity and the errors are discuss are given.
Methods of beam quality and the principle of laser beam analyzer are generally described. The results of 1.2～1.6 diffraction limits in a supersonic COIL with UR 90 cavity and the errors are discuss are given.
1998,
10.
Abstract:
Laser beams profile at focal plane can be controlled using active mirror in ICF system because the beam's profile has strong relationship with the surface of active mirror, the surface of active mirror can be changed at any time and maintained for a long time. In this paper, the capabilities of fitting given wave front (computed by Geometric Transformation Method) at conditions of different actuator numbers and different arrangements have been investigated by computer simulation. The computing results present that the needed laser profile can obtained by adaptive optical technology.
Laser beams profile at focal plane can be controlled using active mirror in ICF system because the beam's profile has strong relationship with the surface of active mirror, the surface of active mirror can be changed at any time and maintained for a long time. In this paper, the capabilities of fitting given wave front (computed by Geometric Transformation Method) at conditions of different actuator numbers and different arrangements have been investigated by computer simulation. The computing results present that the needed laser profile can obtained by adaptive optical technology.
1998,
10.
Abstract:
In this paper, we use differential integral algorithm for optimal design of the binary optics beam splitter. Though the simulate result we can see, splitter designed by this method, when the shape and the intensity of the input changes, the output will keep relatively stable.The designed diffraction efficiency achieved 92.67%,and the nonuniformity of the intensity less than 0.002%.When the input changes from a Gaussian to a paranomal Gaussian, a rectangular facula with tiny random undulationa and a plane wave, the diffract ion efficiency could reach 89.60% at least, and the highest nonuniformity of the intensity is 11.49%.Consider about both the diffract ion efficiency and the nonuniformity of the intensity, this result better than that has been reported.
In this paper, we use differential integral algorithm for optimal design of the binary optics beam splitter. Though the simulate result we can see, splitter designed by this method, when the shape and the intensity of the input changes, the output will keep relatively stable.The designed diffraction efficiency achieved 92.67%,and the nonuniformity of the intensity less than 0.002%.When the input changes from a Gaussian to a paranomal Gaussian, a rectangular facula with tiny random undulationa and a plane wave, the diffract ion efficiency could reach 89.60% at least, and the highest nonuniformity of the intensity is 11.49%.Consider about both the diffract ion efficiency and the nonuniformity of the intensity, this result better than that has been reported.
1998,
10.
Abstract:
This paper describes the application of successive quadratic programming method(SQP) to design laser beam configuration in target area. Based on the requirement of ICF experiment physics, a math model of indirect driver beam geometry is given. A 3D wrieframe is plotted, in which support lines represent 60 laser entireties and 240 turning points of support lines-segments stand for the spatial positions of reflectors.
This paper describes the application of successive quadratic programming method(SQP) to design laser beam configuration in target area. Based on the requirement of ICF experiment physics, a math model of indirect driver beam geometry is given. A 3D wrieframe is plotted, in which support lines represent 60 laser entireties and 240 turning points of support lines-segments stand for the spatial positions of reflectors.
1998,
10.
Abstract:
Calculation of electron conductive opacity is performed in partial wave by employing extended Ziman formula with the mechanism of i e elastic scattering based on average atomic model in relativistic Hartree Fock-Slater selfconsistent field.For studying in more detail,effect of ionic types in plasmas is taken into account on electron conductive opacity.In order to get the emerging probabilities of ionic types in plasmas,the fluctuation theory of entropy and Boltzmann relation are used.
Calculation of electron conductive opacity is performed in partial wave by employing extended Ziman formula with the mechanism of i e elastic scattering based on average atomic model in relativistic Hartree Fock-Slater selfconsistent field.For studying in more detail,effect of ionic types in plasmas is taken into account on electron conductive opacity.In order to get the emerging probabilities of ionic types in plasmas,the fluctuation theory of entropy and Boltzmann relation are used.
1998,
10.
Abstract:
Dielectronic Recombination(DR) has been included in the solution of the rate equations in the average atom(AA) model. Employing the method proposed by Zao Libo and Li Shichang the DR rate coefficients was calculated. The results show that DR plays an important role in some cases in Al plasma and the average degree of ionization for Au plasma is sharply decreased after considering DR process.
Dielectronic Recombination(DR) has been included in the solution of the rate equations in the average atom(AA) model. Employing the method proposed by Zao Libo and Li Shichang the DR rate coefficients was calculated. The results show that DR plays an important role in some cases in Al plasma and the average degree of ionization for Au plasma is sharply decreased after considering DR process.
1998,
10.
Abstract:
The parameters of the laser on the wall of a cylindrical hohlraum and at the laser entrance holes have been calculated using geometry optics, including the position,shape and side of laser spots, as well as the intensity distribution inside the spots. The results are useful for analyzing the initial irradiation uniformity on the capsule and the irradiance on the wall of hohlraum and for effectively injecting laser into the hohlraum.
The parameters of the laser on the wall of a cylindrical hohlraum and at the laser entrance holes have been calculated using geometry optics, including the position,shape and side of laser spots, as well as the intensity distribution inside the spots. The results are useful for analyzing the initial irradiation uniformity on the capsule and the irradiance on the wall of hohlraum and for effectively injecting laser into the hohlraum.
1998,
10.
Abstract:
A two temperature model is proposed to deal with radiation uniformity. This model can provide pre estimate of radiation uniformity of laser configuration. It can deal the configurations whose geometrical structure make them very difficult to deal with by numerical simulation. The model is used to analyze the radiation non uniformity of planar target in hohlraum. It is found that the l =4, m =2 non uniformity is the most dangerous one.
A two temperature model is proposed to deal with radiation uniformity. This model can provide pre estimate of radiation uniformity of laser configuration. It can deal the configurations whose geometrical structure make them very difficult to deal with by numerical simulation. The model is used to analyze the radiation non uniformity of planar target in hohlraum. It is found that the l =4, m =2 non uniformity is the most dangerous one.
1998,
10.
Abstract:
Using the longitudinal propagating field method, the transverse electromagnetic fields expressed by the longitudinal fields are derived under the cylindrical coordinate for the homogeneous chiroplasma waveguide. The wave equations for the longitudinal fields are also derived and solved. By applying the boundary conditions at the cylindrical metal surface, aeigenvalue equations is derived. Numerical results for various parameters are presented, and many meaningful results are obtained.
Using the longitudinal propagating field method, the transverse electromagnetic fields expressed by the longitudinal fields are derived under the cylindrical coordinate for the homogeneous chiroplasma waveguide. The wave equations for the longitudinal fields are also derived and solved. By applying the boundary conditions at the cylindrical metal surface, aeigenvalue equations is derived. Numerical results for various parameters are presented, and many meaningful results are obtained.
1998,
10.
Abstract:
The experimental measurement of the 3ω0/2 scattered light in plasmas which were produced by 1.06μs laser light irradiating gold disk targets is reported in the paper. The experiment results showed the emission of the 3ω0/2 light is obviously rippled and the breaking time between two emission is about 280ps, which is coincide with the calculation results from Two Plasmon Decay's saturation theory modeling. Also the average speed of the surface with 1/4 critical density moving to the opposite direction of the target nurmal is observed to be about 5. 0×107cm2.
The experimental measurement of the 3ω0/2 scattered light in plasmas which were produced by 1.06μs laser light irradiating gold disk targets is reported in the paper. The experiment results showed the emission of the 3ω0/2 light is obviously rippled and the breaking time between two emission is about 280ps, which is coincide with the calculation results from Two Plasmon Decay's saturation theory modeling. Also the average speed of the surface with 1/4 critical density moving to the opposite direction of the target nurmal is observed to be about 5. 0×107cm2.
1998,
10.
Abstract:
D particle simulation is used to investigated the ultrapowerful laser plasma interaction.The mechanism of J×B heating is discussed briefly.Results of particle simulation indicate electron heating and its character.
D particle simulation is used to investigated the ultrapowerful laser plasma interaction.The mechanism of J×B heating is discussed briefly.Results of particle simulation indicate electron heating and its character.
1998,
10.
Abstract:
Separating Maxwell Equations and electromagnetic fields into transverse and longitudinal components, we derive brief wave equations of the longitudinal electric field and magnetic field for arbitrary cross section chiroplasma filled cylindrical waveguides. The general relations between the transverse and longitudinal field components are also derived. For a detailed and common use example, we study a partial chiroplasma filled circular cylindrical waveguide. The general relations between the transverse and longitudinal field components are also derived. For a detailed and common use example, we study a partial chiroplasma filled circular cylindrical waveguide. Its dispersion equation is derived. Numerical solution of th is equat ion gives dispersion curves of HE11, EH01 and HE21modes. Inve
Separating Maxwell Equations and electromagnetic fields into transverse and longitudinal components, we derive brief wave equations of the longitudinal electric field and magnetic field for arbitrary cross section chiroplasma filled cylindrical waveguides. The general relations between the transverse and longitudinal field components are also derived. For a detailed and common use example, we study a partial chiroplasma filled circular cylindrical waveguide. The general relations between the transverse and longitudinal field components are also derived. For a detailed and common use example, we study a partial chiroplasma filled circular cylindrical waveguide. Its dispersion equation is derived. Numerical solution of th is equat ion gives dispersion curves of HE11, EH01 and HE21modes. Inve
1998,
10.
Abstract:
Effect of Faraday cup impedanceon the performance of intense electron beam current of diode is analyzed theoretically and experimentally.A kind of Faraday cup which are compact structure,to be assembled in anode seat is introduced. It is used to measure anode absorption beam current on 81-7M-01 intense relativistic electron beam accelerator.
Effect of Faraday cup impedanceon the performance of intense electron beam current of diode is analyzed theoretically and experimentally.A kind of Faraday cup which are compact structure,to be assembled in anode seat is introduced. It is used to measure anode absorption beam current on 81-7M-01 intense relativistic electron beam accelerator.
1998,
10.
Abstract:
A third order beam extraction scheme for the conceptual design of Beijing proton therapy synchrotron is presented in this paper.Using the scheme,an extraction of beam with higher efficiency(above 95%),smaller emittance(0.15πmm·mrad of time integrated emittance at the electrostatic septum),narrower momentum spread(0.12%) and more uniform intensity can be obtained.
A third order beam extraction scheme for the conceptual design of Beijing proton therapy synchrotron is presented in this paper.Using the scheme,an extraction of beam with higher efficiency(above 95%),smaller emittance(0.15πmm·mrad of time integrated emittance at the electrostatic septum),narrower momentum spread(0.12%) and more uniform intensity can be obtained.
1998,
10.
Abstract:
To improve the accuracy of beam phase measurement system for HIRFL (Heavy Ion Research Facility in Lanzhou), some measures were taken. Matching probe cable electrical length, developing the signal preselector and the system control software, finding and correcting the factors that effect the measurement accuracy. Thus the reliability and accuracy of the system have been improved and it can be used in the practical beam tuning.
To improve the accuracy of beam phase measurement system for HIRFL (Heavy Ion Research Facility in Lanzhou), some measures were taken. Matching probe cable electrical length, developing the signal preselector and the system control software, finding and correcting the factors that effect the measurement accuracy. Thus the reliability and accuracy of the system have been improved and it can be used in the practical beam tuning.
1998,
10.
Abstract:
The effects of energy, emittance, radius on target, and transverse distribution of an electron beam on the exposure at a meter from target and on the exposure angular distribution are researched in the paper. It is found that the effects of the parameters, especially of energy, emittance, and radius on target, are serious and must be considered in the design of flash X ray radiographic machine.
The effects of energy, emittance, radius on target, and transverse distribution of an electron beam on the exposure at a meter from target and on the exposure angular distribution are researched in the paper. It is found that the effects of the parameters, especially of energy, emittance, and radius on target, are serious and must be considered in the design of flash X ray radiographic machine.
1998,
10.
Abstract:
Beijing Free Electron Laser Facility(BFEL)adopts a thermionic cathode microwave electron gun as its RF linac injector. For reletively long macro pulse operation, the back bombardment effect deteriorates the characteristics of the accelerated electron beam. So we developed a prediction based self adaptive feed forward control system to compensate for the beam loading. The system is operational and some experimental results have been obtained, which suggest that the system is effective to imp rove the beam quality, and that it's capable of dealing with complicated systems whose response is time-variable, nonlinear and of long delay.
Beijing Free Electron Laser Facility(BFEL)adopts a thermionic cathode microwave electron gun as its RF linac injector. For reletively long macro pulse operation, the back bombardment effect deteriorates the characteristics of the accelerated electron beam. So we developed a prediction based self adaptive feed forward control system to compensate for the beam loading. The system is operational and some experimental results have been obtained, which suggest that the system is effective to imp rove the beam quality, and that it's capable of dealing with complicated systems whose response is time-variable, nonlinear and of long delay.
1998,
10.
Abstract:
A novel high voltage charging circuit specially designed for the prototype kicker modulator of the Hefei Light Source storage ring was presented. Zero current series resonant switching techniques and a simple charging voltage control scheme was adopted in the circuit. Simulation model was established to study the performance of the circuit with a high voltage capacitor load. Designed charging voltage stability and repetition rate can be achieved through simulation analysis. Methods to increase the repetition rate are discussed.
A novel high voltage charging circuit specially designed for the prototype kicker modulator of the Hefei Light Source storage ring was presented. Zero current series resonant switching techniques and a simple charging voltage control scheme was adopted in the circuit. Simulation model was established to study the performance of the circuit with a high voltage capacitor load. Designed charging voltage stability and repetition rate can be achieved through simulation analysis. Methods to increase the repetition rate are discussed.
1998,
10.
Abstract:
Based on electron trajectory equation in drifting tube filled plasma, the focus properties of electron beam in two area were given in this paper. The pattern of electron beam transmission was described as electrons traveled wavelike around the equilibrium radius, the period and scope related to plasma density and electron velocity. The transmission properties of electrons under weak acceleration field were also studied in this paper, the result showed that the electron beam could focus and transmit without magnetic field by adjusting plasma parameters, voltage and electric field.
Based on electron trajectory equation in drifting tube filled plasma, the focus properties of electron beam in two area were given in this paper. The pattern of electron beam transmission was described as electrons traveled wavelike around the equilibrium radius, the period and scope related to plasma density and electron velocity. The transmission properties of electrons under weak acceleration field were also studied in this paper, the result showed that the electron beam could focus and transmit without magnetic field by adjusting plasma parameters, voltage and electric field.
1998,
10.
Abstract:
In this paper the dynamical behavior of the electron beam in the cross field planar diode is investigated by means of the one dimensional particle in cell simulation. The results of simulation indicate that the injected current have a critical value. The electron beam will transit to the turbulent behavior from the laminar behavior when the injected current exceed the critical current. When we consider the relativistic effect, this transition to turbulence is very evident, and the value of the critical current suddenly decrease, and don’t, this transition to turbulence is very evident, and the value of the critical current suddenly decrease, and it don’t simplely increase with the external voltage and magnetic fields increasing.
In this paper the dynamical behavior of the electron beam in the cross field planar diode is investigated by means of the one dimensional particle in cell simulation. The results of simulation indicate that the injected current have a critical value. The electron beam will transit to the turbulent behavior from the laminar behavior when the injected current exceed the critical current. When we consider the relativistic effect, this transition to turbulence is very evident, and the value of the critical current suddenly decrease, and don’t, this transition to turbulence is very evident, and the value of the critical current suddenly decrease, and it don’t simplely increase with the external voltage and magnetic fields increasing.
1998,
10.
Abstract:
Design of resonance cavities and emission, transmission, modulation of annular intense relativistic electron beam for a L band relativistic klystron amplifier is described . An annular electron beam of voltage 500kV, current 4.5kA, diameter 54.5mm, thickness 4.5mm is produced from an annular foilless diode, and a 536MW output peak microwave power was observed after three cavities. The efficiency is 21%, and the gain is about 30dB.
Design of resonance cavities and emission, transmission, modulation of annular intense relativistic electron beam for a L band relativistic klystron amplifier is described . An annular electron beam of voltage 500kV, current 4.5kA, diameter 54.5mm, thickness 4.5mm is produced from an annular foilless diode, and a 536MW output peak microwave power was observed after three cavities. The efficiency is 21%, and the gain is about 30dB.
1998,
10.
Abstract:
The superposition and splitting characteristics of fields in a rectangular stepped waveguide are analyzed with the way of matched field. By using numerical method, the relationship between distribution of fields and the transmission distance is studied. And the process of one TE 10 wave beam splitting to two is modeled by computer. The theoretical results not only are useful for divising relevant devices but also offer preparation for further work in studying FEM system.
The superposition and splitting characteristics of fields in a rectangular stepped waveguide are analyzed with the way of matched field. By using numerical method, the relationship between distribution of fields and the transmission distance is studied. And the process of one TE 10 wave beam splitting to two is modeled by computer. The theoretical results not only are useful for divising relevant devices but also offer preparation for further work in studying FEM system.
1998,
10.
Abstract:
In this paper, the fractographs of pressurized aluminum cylindrical tanks damaged by the inner pressure and laser irradiation have been analyzed. It is found that the mechanism of crack formation and development in the area irradiated by the laser beam is ductile because there are many ductile dimples in the fractographs. Some fractographs show that there are two layers on the shell wall due to the stress distribution, the outer one was induced by the plastic deformation, and the inner one consists of many ductile dimples. The relations between the stress distribution and cracks, also the development process of crack, are discussed in this paper, which is conducible to better theoretical study on this problem
In this paper, the fractographs of pressurized aluminum cylindrical tanks damaged by the inner pressure and laser irradiation have been analyzed. It is found that the mechanism of crack formation and development in the area irradiated by the laser beam is ductile because there are many ductile dimples in the fractographs. Some fractographs show that there are two layers on the shell wall due to the stress distribution, the outer one was induced by the plastic deformation, and the inner one consists of many ductile dimples. The relations between the stress distribution and cracks, also the development process of crack, are discussed in this paper, which is conducible to better theoretical study on this problem
1998,
10.
Abstract:
The effects of some growth conditions on KDP crystals were studied. It was found that the coordination ligand EDTA used in purification has no significant effect. Crystals grown from aged solution show much improved laser scattering condition and give higher values of laser damage threshold. The existence of poly phosphates seriously affects the growing habit of the crystals and decrease the laser damage threshold significantly.
The effects of some growth conditions on KDP crystals were studied. It was found that the coordination ligand EDTA used in purification has no significant effect. Crystals grown from aged solution show much improved laser scattering condition and give higher values of laser damage threshold. The existence of poly phosphates seriously affects the growing habit of the crystals and decrease the laser damage threshold significantly.
1998,
10.
Abstract:
A set of instrument has been built up by means of the combination of a schlieren with a one dimension array of ultraviolet opticelectrical diode and a simultaneously triggered oscilloscope, which is use in monitoring and measurement the damage state and the threshold on the high reflection (HR) and the anti reflection (AR) coatings under the irradiation of the 308nm excimer laser. By this instrument, the waveforms of the whole damage process which contained the initial, the deepening and the saturated sestages of the damage, have been investigated. The measured damage threshold is about 1.7 J/cm2 at zero incident angle and 1.0 J/cm2 at 45°incident angle for the HR coating, and 1.29 J/cm2 for the AR coating. And also some analysis about the experiment result has been given damage.
A set of instrument has been built up by means of the combination of a schlieren with a one dimension array of ultraviolet opticelectrical diode and a simultaneously triggered oscilloscope, which is use in monitoring and measurement the damage state and the threshold on the high reflection (HR) and the anti reflection (AR) coatings under the irradiation of the 308nm excimer laser. By this instrument, the waveforms of the whole damage process which contained the initial, the deepening and the saturated sestages of the damage, have been investigated. The measured damage threshold is about 1.7 J/cm2 at zero incident angle and 1.0 J/cm2 at 45°incident angle for the HR coating, and 1.29 J/cm2 for the AR coating. And also some analysis about the experiment result has been given damage.
1998,
10.
Abstract:
A method is used in fiducial monitor research by using ultrashort UV optical pulse as fiducial monitor for X ray streak camera, which fiducial optical pulse was from fourth harmonic system of 1.06μm Nd:YAG laser. This fiducial optical pulse and X-ray emission have been received by X ray streak camera so as to precisely relate the X ray emission to the incident laser pulse or these cameras. Fiducial optical pulse with 30ps is measured using UV streak camera.
A method is used in fiducial monitor research by using ultrashort UV optical pulse as fiducial monitor for X ray streak camera, which fiducial optical pulse was from fourth harmonic system of 1.06μm Nd:YAG laser. This fiducial optical pulse and X-ray emission have been received by X ray streak camera so as to precisely relate the X ray emission to the incident laser pulse or these cameras. Fiducial optical pulse with 30ps is measured using UV streak camera.
1998,
10.
Abstract:
An experimental method of response curve calibration for soft X-ray film 5FW on synchrotron radiation source is introduced. Relative experimental response curves for film 5FW to X-ray with wavelengths of 1.47nm and 4.59nm have been obtained, respectively. The experimental results are compared with the theoretical curves .
An experimental method of response curve calibration for soft X-ray film 5FW on synchrotron radiation source is introduced. Relative experimental response curves for film 5FW to X-ray with wavelengths of 1.47nm and 4.59nm have been obtained, respectively. The experimental results are compared with the theoretical curves .
1998,
10.
Abstract:
This paper reviews a variety of methods of the cryogenic target in laser inertial confinement fusion research field. In order to develop the experiments of the target physics in China, the cryogenic target technology used for in high power laser facilitues is suggested.
This paper reviews a variety of methods of the cryogenic target in laser inertial confinement fusion research field. In order to develop the experiments of the target physics in China, the cryogenic target technology used for in high power laser facilitues is suggested.
